CN117538925B - Surrounding rock crack detection device for geotechnical engineering - Google Patents

Abstract

The invention relates to the technical field of geotechnical engineering exploration and discloses a geotechnical engineering surrounding rock fissure detection device. A sampling component and a back-end blocking detection component connected to the support component; the support component includes a load-bearing tube, one end of the load-bearing tube is fixedly connected to the outer ring with a front-end blocking plate, and the other end of the load-bearing pipe is fixedly connected to the outer ring with a back-end blocking plate . This invention changes the traditional detection construction method, performs one-time blocking according to the depth of the detection hole, detects the air condition inside the detection hole in real time, timely replenishes the detection medium due to overflow and penetration, and reduces the occurrence of inaccurate detection caused by too little detection medium. , achieving one-time blocking, real-time replenishment of detection media and detection operations at different locations of the detection hole, reducing the difficulty of detection personnel and improving detection efficiency.

Description

A geotechnical engineering surrounding rock crack detection device

Technical field

The invention relates to the technical field of geotechnical engineering exploration, and in particular to a geotechnical engineering surrounding rock fissure detection device.

Background technique

In nature and practical engineering applications, there are cracks of different geometric shapes inside rock masses, and most cracks contain filling materials with different physical properties and geometric sizes. Generally, the filling medium is composed of weathering, tectonic action and groundwater. The breccia, sand and other low-strength media formed by the action have loose structures, irregular morphological structures, large porosity, and are prone to deformation.

The rock mass used in engineering construction is generally a complex rock mass containing fissures. The fissures often contain a large number of filling materials of different properties. After the cavern is excavated in the project, many filling fissures will usually be generated around it. The existence of filling fissures not only The anisotropy of the surrounding rock is very significant, and at the same time it causes discontinuity in the surrounding rock, which reduces the strength of the surrounding rock and makes the deformation and damage more complicated, which directly affects the stability of the surrounding rock in the cavern.

Under the action of various complex loads such as fluid seepage and confining pressure, the filling of cracks has caused damage in various aspects such as mechanics, chemistry, deformation and fracture, causing engineering instability and numerous geological disasters, especially in mines. In terms of the safety and stability of water conservancy, bridges, mountain tunnels and other projects, the deformation of filling cracks has an impact that cannot be ignored. Therefore, during the construction and operation process, the development degree of cracks in the surrounding rock should be detected, and the effect of engineering disaster control measures should be analyzed to evaluate the stability and safety of the project. This can ensure safety and quality, make timely and reasonable decisions, and avoid the occurrence of geological disasters. occur.

Existing single-hole detection methods generally use the following methods for detection:

Before the test, first clean the borehole with wind or water; put the probe into the measuring hole and connect a long water pipe; plug the hole with an air bag, and inflate the measuring hole with a water pump when inflating the air bag with an air bag; when the measuring hole is in When the water is full, the longitudinal wave velocity at that point can be measured; deflate the air bag, move the probe 20cm out, allow air and water, and proceed to the next point test until completed;

During the operation of the above detection method, it is necessary to inflate and deflate the airbag back and forth, as well as fill and pump water and air in the detection hole, which is troublesome to operate. At the same time, during the detection process, the detection hole cannot be filled in time when the detection hole overflows and leaks. Supplementing the detection medium in the medium will lead to excessive detection errors and inaccurate detection accuracy. Therefore, a geotechnical engineering surrounding rock fissure detection device is proposed.

Contents of the invention

In order to solve the trouble of operation and the technical problem of not being able to replenish the detection medium in the detection hole in time when the detection hole overflows and leaks during the detection process, resulting in excessive detection error and inaccurate detection accuracy, the present invention provides a geotechnical engineering Surrounding rock crack detection device.

The present invention adopts the following technical solution to realize: a geotechnical engineering surrounding rock fissure detection device, including a support component. The end of the support component is fixedly connected with a front-end blocking detection component, and one side of the front-end blocking detection component is sequentially installed with a support. The component-connected sampling component and the back-end blocking detection component;

The support component includes a load-bearing tube. One end of the load-bearing pipe is fixedly connected to the outer ring with a front-end blocking plate. The other end of the load-bearing pipe is fixedly connected with the outer ring with a rear-end blocking plate. There is a gap between the front-end blocking plate and the rear-end blocking plate. A support tube located on the outer ring of the load-bearing tube is fixedly connected, and the support tube runs through guide channel one, guide channel two and guide channel three distributed between the front end blocking plate and the rear end blocking plate, and the guide channel one, guide channel The second and third guide channels are arranged along the length direction of the support tube. Both sides of the openings of the first, second and third guide channels are fixed with side baffles fixedly connected to the load-bearing pipe. The first guide channel is equipped with a A driving unit one is movably connected to the rear end blocking plate. A driving unit two is installed in the guide channel two and is movably connected to the rear end blocking plate. A driving unit two is installed in the guide channel three and is movably connected to the rear end blocking plate. drive unit three;

The rear-end blocking detection component includes a cover with an annular structure that is slidably connected to the outer ring of the support tube. The cover has an annular-structured installation slot on one side close to the sampling component. The installation slot is connected to a movable socket with the support tube. A scraping mechanism, a trigger extraction mechanism is installed on the top and bottom of the side of the cover close to the sampling component, an air bag is fixedly connected to the outer ring of the cover, and a transport sleeve for cable duct storage is provided inside the cover. , the inner ring of the cover is fixed with docking unit one, docking unit two and docking unit three distributed in sequence, docking unit one is connected to drive unit one, docking unit two is connected to drive unit two, and docking unit three is connected to drive unit three;

The sampling assembly includes a fixed plate with an annular structure that is slidably sleeved on the outer ring of the support tube. The inner ring of the fixed plate is fixed with docking units four, five and six distributed in sequence. The docking unit four is connected to the driving unit one. , docking unit five is connected to drive unit two, docking unit six is connected to drive unit three;

The front-end blocking detection assembly includes a box with a disk-shaped structure. The side of the box close to the sampling assembly is provided with a second installation slot coaxially arranged with it. The second installation slot is equipped with a scraper that is slidably connected to the outer ring of the support tube. Separation mechanism two, the inner wall of the end of the box is fixed with an extension rod fixedly connected to the front end blocking plate, the top and bottom of the box close to the sampling component are equipped with trigger extraction mechanism two, and the outer ring of the box is fixed with a socket There are two air bags, and two conveying sleeves for cable duct storage are provided inside the box.

Through the above technical solution, the distance between the back-end blocking detection component and the front-end blocking detection component is adjusted according to the depth of the detection hole, so that the detection device is suitable for the detection operation of the detection hole at the current depth, and then the adjusted detection device is put into the detection hole , and use the back-end blocking detection component and the front-end blocking detection component to perform the blocking operation from the bottom and opening of the detection hole, and then use the back-end blocking detection component and the front-end blocking detection component to pump and inject air into the detection hole Liquid operation is used to inject the detection medium into the detection hole. At the same time, the back-end blocking detection component and the front-end blocking detection component are used to detect the medium in the detection hole in real time, reduce the air content in the detection hole, and fill the detection hole as much as possible. medium to reduce the detection error; thereafter, the sampling component is used to detect and detect successively along the length of the detection hole.

As a further improvement of the above solution, the driving unit includes a rotating shaft that is movably connected to the front-end blocking plate and the rear-end blocking plate. The outer ring of the rotating shaft is provided with a driving groove of a spiral structure arranged along its length direction. The first rotating shaft is connected to the docking unit one and the fourth docking unit. The second driving unit includes a rotating shaft 2 in which the front end blocking plate and the rear end blocking plate are movablely connected. The outer ring of the rotating shaft 2 is provided with a limiting groove along its length direction, and the limiting groove is provided in the outer ring of the rotating shaft 2. The cross-section of the groove is a regular polygonal structure, the second rotating shaft is connected to the docking unit 2 and the docking unit 5, and the driving unit 3 has the same structure as the driving unit 1.

As a further improvement of the above solution, the docking unit includes a baffle fixed to the inner ring of the housing, and the baffle is slidingly connected to the side baffle and the load-bearing tube. Through hole one is connected, and the inner ring of the through hole is fixed with a push rod one that is slidingly connected to the drive unit one. The docking unit two includes a baffle two that is fixed with the inner ring of the cover, and the baffle two is connected with the side baffle. And the load-bearing tube is slidingly connected, and the baffle two is movablely connected to the adapter ring one that is slidingly connected to the drive unit two. The docking unit three includes a baffle three that is fixedly connected to the inner ring of the cover, and the baffle three is connected with the side baffle. And the load-bearing tube is slidingly connected. The third baffle is movablely connected with an adapter ring 2 that is movablely connected with the drive unit 3. The inner ring of the adapter ring 2 is fixedly connected with a sealing rod that is slidingly connected with the drive unit 3. The docking unit 2 is connected with the drive unit 3. Unit five has the same structure, docking unit six has the same structure as docking unit one, and docking unit three has the same structure as docking unit four.

Through the above technical solution, when the motor on the driving unit 1 is started, the rotating shaft is driven to rotate, and under the action of the driving groove and the push rod 1 on the baffle 1 on the docking unit 1, the baffle 1 is moved along the length of the side plate baffle. direction, and then drive the whole cover to slide along the length direction of the support tube, thereby adjusting the position of the cover on the support tube, and adjusting the distance between the rear-end blocking detection component and the front-end blocking detection component; Motor 2 of the driving mechanism 2 When started, the second rotating shaft is driven to rotate, and then the second rotating shaft drives the movable sleeve slidably connected with the upper limit groove to rotate, thereby driving the scraping mechanism one and the scraping mechanism two to perform the scraping operation.

As a further improvement of the above solution, the scraping mechanism includes a rotating plate of an annular structure that is movably connected to the mounting groove, and the rotating plate is movably connected to the outer ring of the support tube, and the rotating plate is close to a part of the cover. The second rotary plate with an annular structure is fixedly connected to the side. The outer ring of the rotating plate is fixed with a support rod. The other end of the support rod is fixed with a scraper mounting plate. The scraper mounting plate is fixed with a scraper. The second rotating plate extends into the cover. The inner ring of one end of the shell is fixedly connected with a bevel gear ring, and the bevel gear ring is meshed with a transfer unit. The transfer unit is connected with a movable sleeve that is slidingly connected to the second drive unit. The outer ring of the movable sleeve is movable sleeved with the cover. The support frame of the fixed L-shaped structure, the scraping mechanism one and the scraping mechanism two have the same structure.

As a further improvement of the above solution, the transfer unit includes a bevel gear meshed with the bevel gear ring. The inner ring of the bevel gear is fixedly connected with a rotating rod, and the outer ring of the rotating rod is movable connected with a transverse rod fixedly connected to the cover. plate, the outer ring of the rotating rod is meshed with two bevel gears, and one side of the two bevel gears is meshed with a three bevel gear that is fixedly connected to the movable sleeve.

Through the above technical solution, the movable sleeve drives the bevel gear three to rotate, and then driven by the bevel gear two, the rotating rod and the bevel gear one, the bevel gear ring rotates, then the rotating plate two rotates, and the rotating plate one rotates, so that the support rod Then the scraper moves with the scraper mounting plate to scrape off the foreign matter on the trigger unit.

As a further improvement of the above solution, the trigger extraction mechanism includes a trigger unit fixed on the cover. An extraction unit is installed on the side of the trigger unit away from the support tube. The trigger unit includes a top transverse unit fixedly sleeved on the cover. Conductive strip, one end of the top transverse conductive strip is fixed with an integrated conductive block one at the bottom, and the other end of the top transverse conductive strip is provided with a conductive block two located on the cover, and the bottom of the second conductive block is fixed with an integrated bottom transverse block The conductive strips, the top transverse conductive strip and the bottom transverse conductive strip are arranged in parallel with gaps reserved; the extraction unit includes an air pipe one and a water pipe one fixedly connected to the cover.

As a further improvement of the above solution, one end of the top transverse conductive strip and the bottom transverse conductive strip extending into the cover is fixedly connected with a conductive column, and the conductive column is connected to a cable.

Through the above technical solution, in order to prevent the scraper from blocking the conduction during scraping, the thickness of the scraper is smaller than the gap between the top transverse conductive strip and conductive block two, and the thickness of the scraper is smaller than the bottom transverse conductive strip and conductive block one. After the scraper removes the foreign matter adhered to the surface of the top transverse conductive strip, conductive block two, bottom transverse conductive strip and conductive block one, when the medium water surface is higher than the top of the trigger unit, the trigger unit is turned on to form a trigger signal. When the water level of the medium is lower than the top of the trigger unit, the trigger unit is not turned on and does not form a trigger signal. This method can effectively prevent foreign matter in the medium from adhering to the trigger unit and affecting the detection effect of the trigger unit. On the one hand, it can be detected in a timely manner. Remove foreign matter adhering to the trigger unit to ensure that the trigger unit triggers in time. It also reduces false interference caused by adhesion of foreign matter and ensures accurate detection.

As a further improvement of the above solution, the outer ring of the fixed plate is embedded with an array of sensors, and one side of the fixed plate is fixedly connected with a transport sleeve for cable storage that is slidably connected to the docking unit one and the rear end blocking plate. three.

Through the above technical solution, the ultrasonic transmitting probe and the ultrasonic receiving probe are used to transmit and receive ultrasonic waves to realize the sampling operation of the detection hole.

As a further improvement of the above solution, the second transport casing has an L-shaped structure. The second transport casing is slidably connected to the second docking unit and the rear end blocking plate. The first air bag is connected to the second trachea that is fixedly connected to the cover. The air bag The second is connected to the third air pipe that is fixedly connected to the box.

As a further improvement of the above solution, the outer ring of the support tube is provided with scales along its length direction, and the outer ring of one end of the support tube away from the front-end blocking detection component is fixed with a handle.

Compared with the existing technology, the beneficial effects of the present invention are:

This invention changes the traditional detection construction method, performs one-time blocking according to the depth of the detection hole, detects the air condition inside the detection hole in real time, timely replenishes the detection medium due to overflow and penetration, and reduces the occurrence of inaccurate detection caused by too little detection medium. .

The invention adjusts the blocking position according to the depth of the detection hole, realizes the installation operation of detection holes of different depths, and is suitable for detection operations under different conditions; it can detect the internal air conditions of detection holes with different tilt angles, ensuring detection of different tilt states. The hole can replenish the detection medium in time during detection.

The invention changes the traditional detection method of back-and-forth blocking switching, filling and deflating, water filling and pumping, and realizes one-time blocking, real-time replenishment of detection medium while detecting and detecting operations of different positions of the detection hole, which reduces the difficulty of operation by detection personnel and improves detection. Detection efficiency.

Description of the drawings

Figure 1 is a schematic structural diagram of a geotechnical engineering surrounding rock crack detection device provided by the present invention;

Figure 2 is a cross-sectional view of a geotechnical engineering surrounding rock crack detection device provided by the present invention;

Figure 3 is a partially enlarged structural schematic diagram of position A in Figure 2 provided by the present invention;

Figure 4 is a side view of the rear end blocking detection assembly provided by the present invention;

Figure 5 is a schematic structural diagram of rotating plate one and rotating plate two provided by the present invention;

Figure 6 is a schematic structural diagram of scraping mechanism 1 provided by the present invention;

Figure 7 is a schematic structural diagram of the support assembly provided by the present invention;

Figure 8 is a schematic structural diagram of the trigger unit provided by the present invention;

Figure 9 is a schematic structural diagram of the sampling component provided by the present invention;

FIG. 10 is a partially enlarged structural schematic diagram of B in FIG. 2 provided by the present invention.

Description of main symbols:

1 support component, 2 rear end blocking detection component, 3 sampling component, 4 front end blocking detection component, 11 carrying tube, 12 rear end blocking plate, 13 support tube, 14 guide channel one, 15 guide channel two, 16 guide Channel three, 17 side baffle, 18 drive unit one, 19 drive unit two, 110 drive unit three, 21 cover, 22 installation slot one, 23 scraping mechanism one, 24 trigger extraction mechanism one, 25 conveying casing one , 26 docking unit one, 27 docking unit two, 28 docking unit three, 29 air bag one, 31 fixed plate, 32 docking unit four, 33 docking unit five, 34 docking unit six, 41 box, 42 extension rod, 43 installation slot 2. 44 scraping mechanism 2, 45 trigger extraction mechanism 2, 46 air bag 2, 47 conveying casing 2, 231 rotating plate 1, 232 rotating plate 2, 233 support rod, 234 scraper mounting plate, 235 scraper, 236 cone Gear ring, 237 transfer unit, 238 movable sleeve, 239 support frame, 241 top transverse conductive strip, 242 conductive block one, 243 conductive block two, 244 bottom transverse conductive strip.

Detailed ways

Below, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise that there is no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. .

Example 1

Please refer to Figures 1 to 10, a geotechnical engineering surrounding rock fissure detection device in this embodiment includes a support component 1. A front-end blocking detection component 4 is fixedly connected to the end of the support component 1. The front-end blocking detection component 4 is The side is sequentially installed with a sampling component 3 connected to the support component 1 and a rear end blocking detection component 2;

The support assembly 1 includes a load-bearing tube 11. One end of the load-bearing pipe 11 is fixedly connected to the outer ring with a front-end blocking plate 112. The other end of the load-bearing pipe 11 is fixedly connected to the outer ring with a rear-end blocking plate 12. The front-end blocking plate 112 and the rear end are fixedly connected. A support pipe 13 located on the outer ring of the load-bearing pipe 11 is fixedly connected between the blocking plates 12. The support pipe 13 runs through guide channels one, 14 and two that are distributed between the front end sealing plate 112 and the rear end sealing plate 12. 15 and guide channel three 16, and guide channel one 14, guide channel two 15 and guide channel three 16 are all arranged along the length direction of the support tube 13, on both sides of the openings of guide channel one 14, guide channel two 15 and guide channel three 16 Side baffles 17 are fixedly connected to the load-bearing tube 11. A driving unit 18 is installed inside the guide channel 14 and is movably connected to the rear end blocking plate 12. A drive unit 18 is installed inside the guide channel 15 and is connected to the rear end. The driving unit two 19 is movably connected to the blocking plate 12, and the driving unit three 110 is installed in the guide channel three 16 and is movably connected to the rear end blocking plate 12;

The rear end blocking detection assembly 2 includes an annular structure cover 21 that is slidably connected to the outer ring of the support tube 13. The cover 21 has an annular structure mounting slot 22 on one side close to the sampling assembly 3, and the mounting slot 22 is connected There is a scraping mechanism 23 movably connected with the support tube 13. A trigger extraction mechanism 24 is installed on the top and bottom of the side of the cover 21 close to the sampling component 3. An airbag 29 is fixedly connected to the outer ring of the cover 21. The interior of the cover 21 is provided with a conveying sleeve 25 for storing cable ducts. The inner ring of the cover 21 is fixed with a docking unit 26, a docking unit two 27 and a docking unit three 28 distributed in sequence. The docking unit 26 is connected to the drive unit One 18 is connected, the docking unit two 27 is connected with the drive unit two 19, the docking unit three 28 is connected with the drive unit three 110;

The sampling assembly 3 includes a fixed plate 31 with an annular structure that is slidably sleeved on the outer ring of the support tube 13. The inner ring of the fixed plate 31 is fixed with docking units four 32, five docking units 33 and six docking units 34 distributed in sequence. The docking unit four 32 is connected to drive unit one 18, docking unit five 33 is connected to drive unit two 19, docking unit six 34 is connected to drive unit three 110;

The front end blocking detection assembly 4 includes a box 41 with a disk-shaped structure. The side of the box 41 close to the sampling component 3 is provided with a mounting slot 43 coaxially therewith. The mounting slot 43 is installed with the outer ring of the support tube 13 The sliding sleeve scraping mechanism 244 has an extension rod 42 fixedly connected to the front end blocking plate 112 on the inner wall of the end of the box 41. The top and bottom of the box 41 close to the sampling component 3 are equipped with triggers. The extraction mechanism 245 has an air bag 46 fixedly connected to the outer ring of the box 41, and a transport sleeve 47 for storing cable ducts is provided inside the box 41.

The implementation principle of a geotechnical engineering surrounding rock fissure detection device in the embodiment of the present application is: adjusting the distance between the back-end plugging detection component 2 and the front-end plugging detection component 4 according to the depth of the detection hole, so that the detection device is suitable for the current depth After that, the adjusted detection device is put into the detection hole, and the back-end blocking detection component 2 and the front-end blocking detection component 4 are used to perform the blocking operation from the bottom and opening of the detection hole, and then use The back-end blocking detection component 2 and the front-end blocking detection component 4 perform air and liquid injection operations on the detection hole, and inject the detection medium into the detection hole. At the same time, the rear-end blocking detection component 2 and the front-end blocking detection component 4 are used to pair The medium in the detection hole is detected in real time to reduce the air content in the detection hole so that the detection hole is filled with the detection medium as much as possible to reduce the detection error; thereafter, the sampling component 3 is used to detect and detect successively along the length direction of the detection hole.

Example 2

On the basis of Embodiment 1, this embodiment is further improved in that: the driving unit 18 includes a rotating shaft that is movably connected to the front end blocking plate 112 and the rear end blocking plate 12. The outer ring of the rotating shaft 1 is provided with a groove along its outer ring. A driving groove with a spiral structure is arranged in the length direction. The rotating shaft one is connected to the docking unit one 26 and the docking unit four 32. The driving unit two 19 includes a rotating shaft two in which the front end blocking plate 112 and the rear end blocking plate 12 are movably connected. The rotating shaft two The outer ring is provided with a limiting groove along its length direction, and the cross-section of the limiting groove is a regular polygonal structure. The rotating shaft two is connected to the docking unit two 27 and the docking unit five 33. The drive unit three 110 has the same structure as the drive unit one 18;

One end of the blocking plate 12 at the first extended end of the rotating shaft is installed with motor one, and one end of the blocking plate 12 at the second extended end of the rotating shaft is installed with motor two;

The docking unit 26 includes a baffle 1 fixedly connected to the inner ring of the cover 21 , and the baffle 1 is slidingly connected to the side baffle 17 and the carrying tube 11 . The baffle 1 is provided with a sliding connection to the rotating shaft of the drive unit 18 Through hole one, the inner ring of through hole one is fixedly connected with push rod one which is slidingly connected with the drive groove of drive unit one 18, docking unit two 27 includes baffle two fixed with the inner ring of cover 21, and baffle two The second baffle is slidably connected to the side baffle 17 and the load-bearing tube 11. The second baffle is movably connected to the adapter ring one and is slidably connected to the restriction groove of the drive unit two 19. The docking unit three 28 includes an adapter ring fixedly connected to the inner ring of the cover 21. Baffle three is slidingly connected to the side baffle 17 and the load-bearing tube 11. The baffle three is movablely connected to an adapter ring 2 that is movablely connected to the drive unit 3 110. The inner ring of the adapter ring 2 is fixedly connected. There is a sealing rod slidingly connected with the drive groove of drive unit three 110. The structure of docking unit two 27 is consistent with that of docking unit five 33. The structure of docking unit six 34 is consistent with that of docking unit one 26. The structure of docking unit three 28 is consistent with that of docking unit four 32. consistent.

Example 3

On the basis of Embodiment 1, this embodiment is further improved in that: the scraping mechanism 23 includes a rotating plate 231 of an annular structure movably connected with the mounting groove 22, and the rotating plate 231 is connected to the outer ring of the support tube 13 Movable socket, rotating plate one 231 is fixed with rotating plate two 232 of annular structure on one side close to the cover 21, rotating plate one 231 is fixed with support rod 233 on the outer ring, and the other end of support rod 233 is fixed with scraper installation plate 234, the scraper mounting plate 234 is fixedly connected with the scraper 235, the inner ring of the rotating plate 232 extending into the cover 21 at one end is fixedly connected with a bevel gear ring 236, and the bevel gear ring 236 is engaged with a transfer unit 237, and the transfer unit The unit 237 is connected with a movable sleeve 238 that is slidingly connected with the restriction groove of the drive unit 219. The outer ring of the movable sleeve 238 is movablely connected with an L-shaped support frame 239 that is fixedly connected to the cover 21. The scraping mechanism 123 The structure is consistent with the scraping mechanism 2 44;

The transfer unit 237 includes a bevel gear meshed with the bevel gear ring 236. The inner ring of the bevel gear is fixedly connected with a rotating rod, and the outer ring of the rotating rod is movable connected with a horizontal plate fixedly connected to the cover 21. The outer ring of the rotating rod is There is a bevel gear 2 in mesh, and a bevel gear 3 fixedly connected to the movable sleeve 238 is meshed on one side of the bevel gear 2.

Example 4

The trigger extraction mechanism 24 includes a trigger unit fixed on the cover 21. An extraction unit is installed on the side of the trigger unit away from the support tube 13. The trigger unit includes a top transverse conductive strip 241 fixedly sleeved on the cover 21. The top The bottom of one end of the horizontal conductive strip 241 is fixed with an integral conductive block 242. The other end of the top horizontal conductive strip 241 is provided with a second conductive block 243 located on the cover 1. The bottom of the second conductive block 243 is fixed with an integrated conductive block 242. The bottom transverse conductive strip 244, the top transverse conductive strip 241 and the bottom transverse conductive strip 244 are arranged in parallel with gaps reserved; the extraction unit includes an air pipe one and a water pipe one fixedly connected to the cover 21;

One end of the top transverse conductive strip 241 and the bottom transverse conductive strip 244 extending into the cover 21 is fixedly connected with a conductive column, and the conductive column is connected to a cable.

Example 5

The outer ring of the fixed plate 31 is inlaid with sensors distributed in an array, and one side of the fixed plate 31 is fixed with a transmission sleeve three for cable storage that is slidably connected to the docking unit 26 and the rear end blocking plate 12;

The second delivery casing 47 has an L-shaped structure. The second delivery casing 47 is slidably connected to the second docking unit 27 and the rear end blocking plate 12. The first air bag 29 is connected to the second trachea that is fixedly connected to the cover 21, and the second air bag 46 is connected to the air pipe 29. There is an air pipe 3 fixedly connected to the box 41;

The outer ring of the support tube 13 is provided with scales along its length direction, and a handle is fixedly connected to the outer ring of one end of the support tube 13 away from the front end blocking detection component 4 .

Example 6

The one end of the trachea one, water pipe one, trachea two and trachea three extending from the support pipe 13 is equipped with a tee pipe, one of the tee pipes is connected to the delivery pipe, and the other of the tee pipes is connected to the extraction pipe. The sensor includes a fixed Disk 31 has an ultrasonic transmitting probe and an ultrasonic receiving probe.

It also includes a control box, which is equipped with a controller, a battery, an air supply pump, an air extraction pump, a liquid storage tank, and a recovery tank. A display screen, a power switch, a data interface, and a power interface are installed on one side of the control box. The air supply pump and air pipe 1. The delivery pipes of trachea two and trachea three are connected, the air pump is connected with the extraction pipes of trachea one, trachea two and trachea three, the liquid storage tank is connected with the delivery pipe of water pipe one, the recovery tank is connected with the extraction pipe of water pipe one; water pipe An infusion pump is installed on both the delivery pipe and the extraction pipe;

The controller is connected to the battery, air supply pump, air extraction pump, liquid storage tank, recovery tank, motor one, motor two, infusion pump, ultrasonic transmitting probe and ultrasonic receiving probe.

Working principle: First, according to the needs of surrounding rock detection, a detection hole with a certain direction and depth is excavated in the surrounding rock, and then the distance between the back-end blocking detection component 2 and the front-end blocking detection component 4 is adjusted according to the depth of the detection hole, so that the detection The device is suitable for the detection operation of the detection hole at the current depth. After that, the adjusted detection device is put into the detection hole, and the rear end blocking detection component 2 and the front end blocking detection component 4 are used to block the bottom and opening of the detection hole. operation, and then use the back-end blocking detection component 2 and the front-end blocking detection component 4 to perform air and liquid injection operations on the detection hole, inject the detection medium into the detection hole, and simultaneously use the back-end blocking detection component 2 and the front-end blocking The detection component 4 detects the medium in the detection hole in real time, reduces the air content in the detection hole, fills the detection hole with the detection medium as much as possible, and reduces the detection error; thereafter, the sampling component 3 is used to detect and detect successively along the length of the detection hole.

When adjusting the detection length of the detection hole, the motor on the drive unit 18 is started to drive the rotating shaft to rotate. Under the action of the push rod on the drive groove and the baffle on the docking unit 26, the baffle moves along the The side plate baffle 17 slides in the length direction, and then drives the entire cover 21 to slide along the length direction of the support tube 13, thereby adjusting the position of the cover 21 on the support tube 13, and realizing the rear end blocking detection component 2 and the front end blocking detection component. 4, and at the same time, since the adapter ring one on the baffle two on the docking unit two 27 is slidably connected with the restriction groove on the drive unit two 19, the adapter ring one and the rotating shaft two are sealed, and the baffle is The sealing rod in the adapter ring two on the plate three seals the drive groove on the drive unit three 110. When the drive unit one 18 is started, the sampling mechanism 3 is not moved, and the scraping mechanism one 23 and The second scraping mechanism 44 rotates and scrapes away, and then uses the first air bag 29 and the second air bag 46 to block both ends of the detection hole to form a sealed detection cavity.

When detecting the gas inside the detection hole, when detecting the horizontal detection hole, the trigger extraction mechanism one 24 and the trigger extraction mechanism two 45 located on the top of the cover 21 and the box 41 are not connected when there is no medium. , the trigger extraction mechanism one 24 and the trigger extraction mechanism two 45 at the top position are not triggered. At this time, it indicates that there is too much air inside the detection hole, and the gas needs to be extracted and filled with medium; when detecting the tilted detection hole, it is When the uppermost trigger extraction mechanism 124 or trigger extraction mechanism 2 45 is not connected to the medium, the trigger extraction mechanism 124 or trigger extraction mechanism 2 45 at the top position is not triggered. This indicates that there is too much air inside the detection hole. It is necessary to extract the gas and fill the medium. At this time, use the air pipe to extract the gas from the detection hole, and the water pipe to transport the detection medium to the inside of the detection hole to supplement the overflow and penetration detection medium.

At the same time, when detecting the gas inside the detection hole, the motor 2 of the driving mechanism 2 19 starts to drive the rotating shaft 2 to rotate, and then the rotating shaft 2 drives the movable sleeve 238 that is slidingly connected to the upper limit groove to rotate, and the movable sleeve 238 drives the bevel gear 3 Rotate, and then driven by the bevel gear 2, the rotating rod and the bevel gear 1, the bevel gear ring 236 rotates, then the rotating plate 232 rotates, the rotating plate 1 231 rotates, so that the support rod 233 moves, and then the scraper 235 follows the scraper The movement of the plate mounting plate 234 scrapes off foreign matter on the trigger unit.

During scraping, in order to prevent the scraper 235 from clogging the conduction, the thickness of the scraper 235 is smaller than the gap between the top transverse conductive strip 241 and the second conductive block 243, and the thickness of the scraper 235 is smaller than the bottom transverse conductive strip 244 and the conductive block 243. In the gap between one and 242, the scraper 235 removes the foreign matter adhered to the surface of the top transverse conductive strip 241, the second conductive block 243, the bottom transverse conductive strip 244 and the first conductive block 242. When the water surface of the medium is higher than the top of the trigger unit, The trigger unit is turned on to form a trigger signal. When the water level of the medium is lower than the top of the trigger unit, the trigger unit is not turned on and no trigger signal is formed. This method can effectively prevent foreign matter in the medium from adhering to the trigger unit and affecting the trigger. The unit detection effect, on the one hand, promptly removes foreign matter adhered to the trigger unit to ensure that the trigger unit triggers in a timely manner, and at the same time, it can also reduce the occurrence of false interference caused by the adhesion of foreign matter to ensure accurate detection.

When the sampling component 3 is sampling, as soon as the motor on the drive unit three 110 is started, the same principle as the drive unit one 18 is used to drive the fixed plate 31 to move along the length direction of the support tube 13. When the fixed plate 13 moves to the preset position, The ultrasonic transmitting probe and the ultrasonic receiving probe are used to transmit and receive ultrasonic waves to collect detection information. There is no need to adjust the air bag back and forth, inflate and deflate, inject and pump water, and adjust the detection position for detection.

This design first changes the traditional detection construction method, performs one-time blocking according to the depth of the detection hole, detects the air condition inside the detection hole in real time, replenishes the detection medium due to overflow and penetration in a timely manner, and reduces detection inaccuracies caused by too little detection medium. occurs; according to the depth of the detection hole, adjust the blocking position to realize the installation operation of detection holes of different depths, suitable for detection operations under different conditions; it can detect the internal air state of detection holes with different tilt angles to ensure detection of different tilt states The hole can be replenished with detection medium in time during detection; changing the traditional detection method of switching back and forth, filling and deflating, filling and pumping water, it can achieve one-time blocking, real-time replenishment of detection medium while detecting and detecting operations at different positions of the detection hole, reducing It reduces the operational difficulty for detection personnel and improves detection efficiency.

The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art on the basis of the present invention fall within the scope of the present invention. Scope of protection claimed.

Claims (10)

1. The surrounding rock crack detection device for geotechnical engineering is characterized by comprising a support component, wherein the end part of the support component is fixedly connected with a front end plugging detection component, and one side of the front end plugging detection component is sequentially provided with a sampling component and a rear end plugging detection component which are connected with the support component;

the support assembly comprises a bearing pipe, a front end plugging plate is fixedly sleeved on the outer ring at one end of the bearing pipe, a rear end plugging plate is fixedly sleeved on the outer ring at the other end of the bearing pipe, a support pipe positioned on the outer ring of the bearing pipe is fixedly connected between the front end plugging plate and the rear end plugging plate, the support pipe penetrates through a first guide channel, a second guide channel and a third guide channel which are distributed between the front end plugging plate and the rear end plugging plate, the first guide channel, the second guide channel and the third guide channel are all arranged along the length direction of the support pipe, side baffles fixedly connected with the bearing pipe are fixedly connected to two sides of the openings of the first guide channel, the second guide channel and the third guide channel, a driving unit I movably sleeved with the rear end plugging plate is arranged in the first guide channel, a driving unit II movably sleeved with the rear end plugging plate is arranged in the guide channel, and a driving unit III movably sleeved with the rear end plugging plate is arranged in the guide channel;

the rear end plugging detection assembly comprises a housing which is sleeved on an outer ring of the support tube in a sliding manner, one side of the housing, which is close to the sampling assembly, is provided with a first installation groove of the annular structure, the first installation groove is connected with a first scraping mechanism which is movably sleeved with the support tube, the top and the bottom of one side of the housing, which is close to the sampling assembly, are respectively provided with a first triggering extraction mechanism, the outer ring of the housing is fixedly sleeved with an air bag I, a conveying sleeve I for accommodating a cable duct is arranged in the housing, a first butt joint unit, a second butt joint unit and a third butt joint unit which are sequentially distributed are fixedly connected with an inner ring of the housing, the first butt joint unit is connected with the first driving unit, the second butt joint unit is connected with the second driving unit, and the third butt joint unit is connected with the third driving unit;

the sampling assembly comprises a fixed disc which is sleeved on the outer ring of the supporting tube in a sliding manner, wherein the inner ring of the fixed disc is fixedly connected with a fourth butting unit, a fifth butting unit and a sixth butting unit which are distributed in sequence, the fourth butting unit is connected with the first driving unit, the fifth butting unit is connected with the second driving unit, and the sixth butting unit is connected with the third driving unit;

the front end shutoff detection assembly comprises a box body of a disc-shaped structure, a second installation groove which is coaxially arranged on one side, close to the sampling assembly, of the box body is provided with a second scraping mechanism which is in sliding sleeve joint with the outer ring of the supporting tube, an extension rod fixedly connected with the front end shutoff plate is fixedly connected to the inner side wall of the end portion of the box body, a second triggering extraction mechanism is arranged on the top and the bottom, close to one side of the sampling assembly, of the box body, an air bag is fixedly sleeved on the outer side of the box body, and a second conveying sleeve for accommodating a cable pipeline is arranged in the box body.

2. The geotechnical engineering surrounding rock crack detection device according to claim 1, wherein the first driving unit comprises a first rotating shaft movably sleeved with the front end plugging plate and the rear end plugging plate, a driving groove of a spiral structure arranged along the length direction of the first rotating shaft is formed in the outer ring of the first rotating shaft, the first rotating shaft is connected with the first abutting unit and the fourth abutting unit, the second driving unit comprises a second rotating shaft movably sleeved with the front end plugging plate and the rear end plugging plate, a limiting groove arranged along the length direction of the second rotating shaft is formed in the outer ring of the second rotating shaft, the cross section of the limiting groove is of a regular polygon structure, the second rotating shaft is connected with the second abutting unit and the fifth abutting unit, and the third driving unit is consistent with the first driving unit.

3. The geotechnical engineering surrounding rock crack detection device according to claim 1, wherein the first butt joint unit comprises a first baffle fixedly connected with an inner ring of a housing, the first baffle is connected with a side baffle and a bearing pipe in a sliding manner, a through hole I connected with the first driving unit in a sliding manner is formed in the first baffle, a pushing rod I connected with the first driving unit in a sliding manner is fixedly connected with the inner ring of the first through hole, the second butt joint unit comprises a second baffle fixedly connected with the inner ring of the housing, the second baffle is connected with the side baffle and the bearing pipe in a sliding manner, the second baffle is movably sleeved with a transfer ring I connected with the second driving unit in a sliding manner, the third baffle is connected with the third baffle in a sliding manner, a sealing rod connected with the third driving unit in a sliding manner is movably sleeved with the second baffle, the second butt joint unit is consistent with the fifth butt joint unit in a structure, the sixth butt joint unit is consistent with the first butt joint unit in a structure, and the third butt joint unit is consistent with the fourth butt joint unit in a structure.

4. The geotechnical engineering surrounding rock crack detection device according to claim 1, wherein the scraping mechanism I comprises a first rotating plate with an annular structure which is movably sleeved with the mounting groove I, the first rotating plate is movably sleeved with the outer ring of the supporting tube, one side, close to the housing, of the first rotating plate is fixedly connected with a second rotating plate with the annular structure, the outer ring of the first rotating plate is fixedly connected with a supporting rod, the other end of the supporting rod is fixedly connected with a scraper mounting plate, the scraper mounting plate is fixedly connected with a scraper, one end inner ring of the second rotating plate extending into the housing is fixedly sleeved with a bevel gear ring, the bevel gear ring is meshed with a switching unit, the switching unit is connected with a movable sleeve which is in sliding connection with the second driving unit, the outer ring of the movable sleeve is movably sleeved with a support frame with an L-shaped structure which is fixedly connected with the housing, and the scraping mechanism I is consistent with the structure of the second scraping mechanism.

5. The geotechnical engineering surrounding rock crack detection device according to claim 4, wherein the switching unit comprises a first bevel gear meshed with the bevel gear ring, a rotary rod is fixedly sleeved on an inner ring of the first bevel gear, a transverse plate fixedly connected with the housing is movably sleeved on an outer ring of the rotary rod, a second bevel gear meshed with the outer ring of the rotary rod, and a third bevel gear fixedly sleeved with the movable sleeve is meshed with one side of the second bevel gear.

6. The geotechnical engineering surrounding rock crack detection device according to claim 1, wherein the first trigger extraction mechanism comprises a trigger unit fixedly connected to the housing, the extraction unit is arranged on one side, far away from the supporting tube, of the trigger unit, the trigger unit comprises a top transverse conducting strip fixedly sleeved on the housing, a first conducting block integrally arranged is fixedly connected to the bottom of one end of the top transverse conducting strip, a second conducting block positioned on the housing is arranged at the other end of the top transverse conducting strip, a bottom transverse conducting strip integrally arranged is fixedly connected to the bottom of the second conducting block, and the top transverse conducting strip and the bottom transverse conducting strip are arranged in parallel and reserved with a gap; the extraction unit comprises an air pipe I and a water pipe I which are fixedly sleeved with the housing.

7. The geotechnical engineering surrounding rock crack detection device according to claim 6, wherein the conductive posts are fixedly connected to one ends of the top transverse conductive strip and the bottom transverse conductive strip extending into the housing, and the conductive posts are connected with a first cable.

8. The geotechnical engineering surrounding rock crack detection device according to claim 1, wherein sensors distributed in an array are embedded in the outer ring of the fixed disc, and a conveying sleeve three for cable storage, which is in sliding sleeve connection with the first butt joint unit and the rear end plugging plate, is fixedly connected to one side of the fixed disc.

9. The geotechnical engineering surrounding rock crack detection device according to claim 1, wherein the second conveying sleeve is of an L-shaped structure, the second conveying sleeve is in sliding sleeve joint with the second butt joint unit and the rear end plugging plate, the first air bag is communicated with the second air pipe fixedly connected with the housing, and the second air bag is communicated with the third air pipe fixedly connected with the box body.

10. The geotechnical engineering surrounding rock crack detection device according to claim 1, wherein scales arranged along the length direction of the outer ring of the support tube are arranged, and a handle is fixedly connected with the outer ring of one end, far away from the front end plugging detection assembly, of the support tube.