CN115059461B - Method and device for sampling and preparing underground cemented filling body - Google Patents
Method and device for sampling and preparing underground cemented filling body Download PDFInfo
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- CN115059461B CN115059461B CN202210680206.8A CN202210680206A CN115059461B CN 115059461 B CN115059461 B CN 115059461B CN 202210680206 A CN202210680206 A CN 202210680206A CN 115059461 B CN115059461 B CN 115059461B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/10—Formed core retaining or severing means
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
本发明公开了一种井下胶结充填体取样制样方法及装置。本方法包括定位、表面去除、根据充填体强度选择适宜的取样钻头二次下钻取样、保存等操作步骤，本方法能够完成全流程作业，规范了操作流程，提高了工作效率，并保证了取样的成功率。取样制样装置包括底座支架、钻机、破孔钻头和取样钻头，取样钻头为单管单动钻头或双管单动钻头。本发明装置可以有效抑制取样过程中的振动，还可以实现不同强度的充填体的可靠取样，防止充填体芯破损、脱落或发生糊钻，确保取样的完整性与有效性。
The present invention discloses a method and device for sampling and preparing underground cemented filling bodies. The method includes the steps of positioning, surface removal, selecting a suitable sampling drill bit for secondary drilling and sampling according to the strength of the filling body, and preservation. The method can complete the whole process operation, standardize the operation process, improve work efficiency, and ensure the success rate of sampling. The sampling and preparing device includes a base support, a drilling rig, a hole-breaking drill bit and a sampling drill bit. The sampling drill bit is a single-tube single-action drill bit or a double-tube single-action drill bit. The device of the present invention can effectively suppress vibrations during the sampling process, and can also realize reliable sampling of filling bodies of different strengths, prevent the filling body core from being damaged, falling off, or becoming stuck, and ensure the integrity and effectiveness of the sampling.
Description
Technical Field
The invention relates to a sampling and sample preparation method, in particular to a method for sampling and sample preparation from a downhole cementing filling body; and also relates to a device for sampling and preparing samples from the cemented filling body.
Background
Along with the stricter national requirements on safe production and environmental protection, the filling mining method is gradually popularized and applied. And how to determine reasonable filler strength in filling mining is a key factor for ensuring safe mining. At present, the strength of the filling body is mostly researched in a laboratory sample preparation and maintenance mode, and in actual production, the strength of the filling body formed by filling the filling slurry underground is influenced by a plurality of factors, such as stirring and conveying, discharging points, plate wall bleeding and the like, and the actual strength is greatly different from the laboratory test result. Thus, an ideal strength test method is to sample, prepare samples in situ downhole and then perform laboratory tests.
At present, a plurality of sampling methods are adopted, and drilling sampling, cutting sampling and the like are mostly adopted. These methods are directed to high strength materials such as rock or concrete, and there are fewer methods and dedicated equipment for sampling the filling body. The complete rock coring method and apparatus have its limitations in sampling the filling body, resulting in a lower coring rate, typically around 30%, which is mainly due to the fact that:
(1) Because the intensity of the filling body is lower, the existing drill bit is generally hard alloy or diamond, the thickness is thicker, centrifugal force or horizontal vibration is inevitably generated during sampling, especially when drilling is deeper, drill sticking often occurs, manual work can not be righted, vibration is obvious, the vibration can cause mechanical damage to the filling body sample, the intensity of the sample is reduced, data result distortion is caused, and the filling body sample is not representative. (2) The filling body has viscosity, and the filling body with lower strength is easy to stick to the drill after high-speed rotary cutting, so that the drill lifting is difficult. (3) When the filler with high strength is drilled, the filler cannot be cut off, and the filler is still in the drilled hole when the drill is lifted, so that sampling fails. (4) The filling body is easy to fracture and break, and cannot be completely sampled, and even after a complete sample is taken out of a drilled hole, the complete sample is difficult to be taken out of the pipe body and stored well. (5) Sampling parameters (drilling machine rotating speed, advancing speed and the like) of high-strength materials such as rock or concrete are used, so that the problems of breakage of a filling body core and the like are easily caused, and the sampling operation cannot be completed.
Disclosure of Invention
The invention provides a method and a device for sampling and preparing underground cemented filling body, which aim to: aiming at the characteristics of the filling body, a special sampling method and special sampling equipment are provided, so that the sampling success rate is improved.
The technical scheme of the invention is as follows:
A method for sampling and preparing a downhole cemented filling body, comprising the following steps:
Step 1, positioning and hole distribution are carried out according to the disclosure condition of an underground filling body, and sampling positions are determined; fixing a base bracket at a sampling position;
Step 2, selecting a sampling drill bit according to the strength of the filling body;
step 3, connecting a broken hole drill bit on an output shaft of a drilling machine on the base support, and removing a broken layer on the surface of the filling body by using the broken hole drill bit until reaching an undamaged area and exposing the filling body inside;
step 4, taking down the hole breaking drill bit; connecting a sampling drill bit to an output shaft of a drilling machine through an extension bar, adjusting and fixing the angle of the drilling machine through a base bracket, and then propelling along the direction of the output shaft of the drilling machine to drill and sample;
And 5, taking out the filler core from the sampling drill bit, putting the filler core into the inner cylinder, putting the packaged inner cylinder into a storage box, and transferring the inner cylinder to a laboratory for sample preparation.
As a further improvement of the downhole cemented filling body sampling and preparing method: in the step 4, the propelling speed of the drilling machine is 5-10 cm/min, and the rotating speed of the drilling machine is 500-1000 r/min.
As a further improvement of the downhole cemented filling body sampling and preparing method: in the step 4, during drilling, the rotating speed of the drilling machine is adjusted according to the strength of the filling body and the drilling depth, and the higher the strength of the filling body is, the deeper the depth is, the faster the rotating speed of the drilling machine is.
As a further improvement of the downhole cemented filling body sampling and preparing method: in the step 2, when the strength of the filling body is less than 0.5MPa, a single-tube single-action drill bit is selected as a sampling drill bit; when the strength of the filling body is more than or equal to 0.5MPa, a double-tube single-action drill bit was selected as the sampling drill bit.
The invention also discloses a sampling and sample preparing device of the underground cemented filling body, which comprises a base bracket, a drilling machine, a hole breaking drill bit and a sampling drill bit;
the drilling machine is arranged on the base bracket, and an output shaft of the drilling machine is used for connecting a hole breaking drill bit and also used for connecting a sampling drill bit through an extension rod;
the sampling drill bit is a single-tube single-action drill bit or a double-tube single-action drill bit.
As a further improvement of the downhole cemented filling body sampling and preparing device: the single-tube single-action drill bit comprises a tube body, a pressure head, a first claw spring and a first annular drill blade;
The pipe body adopts a semi-closed pipe structure and consists of two semi-cylinders;
the pressure head is arranged at the rear end of the pipe body and is used for being connected with an output shaft of the drilling machine through the extension rod;
a cylindrical first claw spring is arranged at the front end orifice of the tube body through a first fixing seat, and a plurality of first elastic petals bent towards the axis of the first claw spring are arranged at the rear end of the first claw spring;
The inner hole of the first claw spring is internally provided with the first annular drill blade, the front end of the first annular drill blade is sharp, and the rear end of the first annular drill blade is provided with a first annular bulge; the first annular bulge slides back and forth in a first annular cavity formed between the first claw spring and the tube body; when the first annular protrusion slides to the rear end, the first elastic valve is positioned in the first annular cavity and between the front end of the pipe body and the first annular drill blade; when the first annular protrusion slides to the front end, the first elastic flap is bent inwards and is positioned at the rear side of the first annular drill blade;
the side wall of the rear part of the pipe body is provided with a first mud hole which is communicated.
As a further improvement of the downhole cemented filling body sampling and preparing device: the double-tube single-action drill bit comprises a single-action mechanism, an outer tube, an inner tube, a second claw spring and a second annular drill blade;
the outer tube is sleeved on the outer side of the inner tube, and a gap is formed between the outer tube and the inner tube; the rear end of the outer tube is connected with the extension bar through a single-acting mechanism; the front end of the single-acting mechanism is connected with the rear end of the inner tube through a rotating bearing so as to realize the relative rotation between the inner tube and the outer tube;
The inner pipe is of a semi-closed pipe structure and consists of two semi-cylinders;
A cylindrical second claw spring is arranged at the front end orifice of the outer tube through a second fixing seat, and a plurality of second elastic petals bent towards the axis of the second claw spring are arranged at the rear end of the second claw spring;
The inner hole of the second claw spring is internally provided with the second annular drill blade, the front end of the second annular drill blade is sharp, and the rear end of the second annular drill blade is provided with a second annular bulge; the second annular bulge slides back and forth in a second annular cavity formed between the second claw spring and the outer tube; when the second annular bulge slides to the rear end, the second elastic valve is positioned in the second annular cavity and between the front end of the outer tube and the second annular drill blade, and a gap is reserved between the front end of the inner tube and the rear end of the second annular drill blade; when the second annular protrusion slides to the front end, the second elastic flap is bent inwards and is positioned at the rear side of the second annular drill blade;
the side wall of the outer tube is provided with a through second mud hole;
the rear part of the inner tube cavity is provided with a baffle plate positioned at the front side of the rotary bearing and used for preventing slurry from polluting the rotary bearing.
As a further improvement of the downhole cemented filling body sampling and preparing device: external threads are arranged on the outer walls of the single-tube single-action drill bit and the double-tube single-action drill bit.
As a further improvement of the downhole cemented filling body sampling and preparing device: the base support comprises an upright post and a lifting seat which moves up and down along the upright post, a sliding rail is arranged on the lifting seat in a rotating connection mode, and a locking device is arranged at the rotating connection position;
the slide rail is provided with a slide seat, and the drilling machine is arranged on the slide seat;
The base support also comprises a lifting driving mechanism for driving the lifting seat to move up and down and a feeding driving mechanism for driving the sliding seat to move back and forth.
As a further improvement of the downhole cemented filling body sampling and preparing device: the preservation box comprises a box body, a box cover and a storage barrel used for being placed in a groove of the box body;
The storage cylinder comprises an inner cylinder or more than two inner cylinders connected in series; one end of the inner cylinder is provided with a convex spigot, and the other end of the inner cylinder is provided with a concave spigot matched with the convex spigot; the inner cylinder adopts a semi-closed pipe structure, the inner wall is lined with a soft cushion layer, and the side wall is provided with an observation window;
And sealing covers are respectively arranged at two ends of the storage cylinder.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention provides a method for sampling and preparing a metal mine underground cemented filling body, which comprises the operation steps of positioning, surface removal, secondary drilling and sampling, storage and the like.
(2) The special base support is used for ensuring the stability of the drill bit and inhibiting vibration during drilling, and meanwhile, the sliding rail of the folding structure can change the direction of the drilling machine and carry out sampling operation at different angles.
(3) During sampling, the propelling speed is kept stable within the range of 5-10 cm/min, the rotating speed of the drilling machine is changed along with the depth and the strength of the filling body within the range of 500-1000 r/min, and the rotating speed is higher when the depth is deeper and the strength is stronger. The sampling parameters are set according to the condition of the filling body, are completely different from those of the traditional rock or concrete and other materials, and are more matched with the characteristics of the filling body, so that the filling body core is not damaged in the sampling process, and the integrity of sampling is ensured.
(4) The method selects sampling drill bits with different structures aiming at filling bodies with different intensities. The single-tube single-action drill bit can realize rapid sampling of the high-strength filling body. The double-tube single-action drill bit is suitable for low-strength filling bodies, the inner tube is fixed during drilling, the outer tube is rotated at a high speed, and the sampling efficiency can be ensured and the damage to the filling body core can be avoided by the mode.
(5) The mud produced during sampling can also be discharged through the mud discharging hole.
(6) The cutting edges of the two drills are provided with claw springs. When drilling and sampling are carried out, the annular drill blade moves backwards under the action of resistance to block the claw spring, so that the filling body can smoothly enter the inner cavity. When the drill is lifted, the annular drill blade moves forwards under the action of resistance and releases the claw spring, and the claw spring can pinch off the filling body core and prevent the filling body core from falling off.
(7) The pipe body of single action drill bit of single tube and the inner tube of double-barrelled single action drill bit all adopt half close tube structure, open half close tube and can take out the filling core, for traditional mode with filling core release, can show the damage that reduces filling core, guarantee that the sample is complete, effective.
(8) The base support not only has the lifting function, but also has the angle adjusting function, so that the sampling can be conveniently performed at different positions and at different angles, and the sampling requirement can be fully met.
(9) The invention also provides a special filler core preservation box and a storage cylinder. The storage cylinder adopts the structure form of the semi-closed pipe, so that the sample is convenient to take and put, and the damage risk is reduced. Meanwhile, the end part of the inner cylinder is provided with a spigot, and the inner cylinder can be spliced and combined according to the length of a sample.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of the whole structure of the sampling device of the present invention, in which the end of the drilling machine is connected with a double-pipe single-action drill;
FIG. 3 is a schematic view of the structure of a single-tube single-action drill bit during sampling;
FIG. 4 is a schematic view of the construction of the front end of a single-tube single-action drill bit during the drill lifting process;
FIG. 5 is a schematic view of the structure of a double-tube single-action drill bit during sampling;
FIG. 6 is a schematic structural view of an inner barrel;
FIG. 7 is a schematic view of a closure;
fig. 8 is an exploded view of the preservation box.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the accompanying drawings:
The embodiment discloses a method and a device for sampling and preparing underground cemented filling body.
Referring to FIG. 1, the method for sampling and preparing the downhole cemented filling body comprises the following steps:
Step 1, positioning and hole distribution are carried out according to the disclosure condition of the underground filling body, sampling positions are determined, and marking is carried out, wherein the positions comprise plate wall positions and side wall disclosure positions. Preferably, the operation is performed at a position where the top plate and the bottom plate are stable, no water is sprayed and the illumination is good. And fixing a base bracket at the sampling position.
As shown in fig. 2, the base bracket comprises a stand column 1 and a lifting seat 2 which is in sliding fit with the stand column 1 to realize up-and-down movement.
The base support further comprises a lifting driving mechanism for driving the lifting seat 2 to move up and down.
As an alternative embodiment, the lifting driving mechanism comprises a rack installed on the upright post 1 and a gear installed on the lifting seat 2 and driven by a motor, wherein the gear is meshed with the rack, and the lifting seat 2 moves up and down under the dragging of the motor.
As another alternative embodiment, the lifting driving mechanism comprises a screw rod which is arranged in parallel relative to the upright 1 and can rotate, and one end of the screw rod is connected with a motor. The screw rod is also matched with a nut arranged on the lifting seat 2. The motor drives the screw rod to rotate, so that the lifting seat 2 moves up and down.
The lifting seat 2 is provided with a sliding rail 3 in a rotating connection mode, and a locking device is arranged at the rotating connection position. Preferably, the sliding rail 3 is driven to rotate by a motor and a speed reducer. As an alternative embodiment, the locking device is a brake device of the motor. As another alternative, the speed reducer adopts a worm gear mechanism, and when the motor stops rotating, the speed reducer is automatically locked through the self-locking characteristic of the worm gear, and the speed reducer is a transmission mechanism and the locking device.
The slide rail 3 is provided with a slide seat 5 in a sliding fit mode, and the drilling machine 4 is arranged on the slide seat 5. The output shaft of the drilling machine 4 is used for being connected with a hole breaking drill bit and is also used for being connected with a sampling drill bit through an extension rod 6. The sampling drill bit is a single-tube single-action drill bit 7 or a double-tube single-action drill bit 8.
The base frame also includes a feed drive mechanism for driving the carriage 5 to move back and forth.
Similarly, the feeding driving mechanism may adopt a rack-and-pinion mechanism or a lead screw structure to drive the slide carriage 5 to move linearly.
An operator controls each motor and the drilling machine 4 through the controller, and can realize operations such as lifting, rotation, feeding, rotation of the drilling machine 4 and the like.
And 2, selecting a sampling drill bit according to the strength of the filling body.
Specifically, when the strength of the filling body is less than 0.5MPa, a single-tube single-action drill bit 7 is selected as a sampling drill bit; when the strength of the filling body is more than or equal to 0.5MPa, double-tube selective single-action drill bit 8 as a sampling drill bit.
As shown in fig. 3 and 4, the single-tube single-action drill bit 7 includes a tube body 7-1, a ram 7-3, a first claw spring 7-5, and a first annular drill blade 7-6.
The pipe body 7-1 adopts a semi-closed pipe structure, and is buckled together by two semi-cylinders through a buckling mechanism.
The pressure head 7-3 is arranged at the rear end of the pipe body 7-1 and is used for being connected with the output shaft of the drilling machine 4 through the extension rod 6.
The front end orifice of the tube body 7-1 is provided with a cylindrical first claw spring 7-5 through a first fixing seat 7-4, and the rear end of the first claw spring 7-5 is provided with a plurality of first elastic petals which are bent towards the axis of the first claw spring 7-5.
The first annular drill blade 7-6 is installed in the inner hole of the first claw spring 7-5, the front end of the first annular drill blade 7-6 is sharp, and the rear end of the first annular drill blade 7-6 is provided with a first annular bulge. The first annular protrusion slides back and forth in a first annular cavity formed between the first claw spring 7-5 and the pipe body 7-1.
The inner diameter of the pipe body 7-1 is slightly larger than that of the first annular drill blade 7-6, so that friction of the filling body is reduced, and blocking and abrasion are prevented. The outer wall of the pipe body 7-1 is provided with external threads, so that the drilling resistance is reduced. The inner wall of the pipe body 7-1 is chromed, so that lubrication can be ensured, and sticking and drilling can be prevented.
The rear side wall of the pipe body 7-1 is provided with a first through mud hole 7-2.
As shown in fig. 5, the double-tube single-action drill 8 includes a single-action mechanism 8-9, an outer tube 8-1, an inner tube 8-3, a second claw spring 8-5, and a second annular drill blade 8-6.
The outer tube 8-1 is sleeved outside the inner tube 8-3, and the inner tube 8-3 and the outer tube 8-1 are concentric. A gap is provided between the outer tube 8-1 and the inner tube 8-3.
The rear end of the outer tube 8-1 is connected with a single-acting mechanism 8-9 through a thread structure, and the rear end of the single-acting mechanism 8-9 is used for being connected with the extension rod 6.
The front end of the single-acting mechanism 8-9 is connected with the rear end of the inner tube 8-3 through a rotating bearing 8-8 so as to realize the relative rotation between the inner tube 8-3 and the outer tube 8-1. Specifically, the front end of the single-acting mechanism 8-9 is fixedly connected with the inner hole of the rotating bearing 8-8, and the outer ring of the rotating bearing 8-8 is connected with the rear end of the inner tube 8-3 through threads. The single-acting mechanism 8-9 is also provided with an operation hole 8-10, and when the inner tube 8-3 is disassembled, the rotation bearing 8-8 can be rotated through the operation hole 8-10.
The inner tube 8-3 is also of a semi-closed tube structure and consists of two semi-cylinders.
A cylindrical second claw spring 8-5 is arranged at the front end orifice of the outer tube 8-1 through a second fixing seat 8-4, and a plurality of second elastic petals bent towards the axis of the second claw spring 8-5 are arranged at the rear end of the second claw spring 8-5.
The second annular drill blade 8-6 is arranged in the inner hole of the second claw spring 8-5, the front end of the second annular drill blade 8-6 is sharp, and the rear end of the second annular drill blade is provided with a second annular bulge; the second annular protrusion slides back and forth in a second annular cavity formed between the second claw spring 8-5 and the outer tube 8-1.
The side wall of the outer tube 8-1 is provided with a second through mud hole 8-2.
The outer wall of the outer tube 8-1 is provided with external threads. The inner walls of the outer tube 8-1 and the inner tube 8-3 are plated with chromium.
The rear part of the cavity of the inner tube 8-3 and positioned at the front side of the rotary bearing 8-8 are also provided with a baffle plate 8-7 for preventing mud from polluting the rotary bearing 8-8. The baffle 8-7 is divided into two halves, and is respectively connected with the two semi-cylinders of the inner tube 8-3 into a whole.
And 3, connecting a hole breaking drill bit to an output shaft of a drilling machine 4 on the base support, and removing a damaged layer on the surface of the filling body by using the hole breaking drill bit until reaching an undamaged area and exposing the filling body inside.
Before drilling operation, parts such as a drill bit, a base bracket and the like are inspected, so that the stability of support and flexible actions of joints and rotating joints are ensured.
And 4, taking down the hole breaking drill bit. The sampling drill bit is connected to the output shaft of the drilling machine 4 through the extension bar 6, the angle of the drilling machine 4 is adjusted and fixed through the base support, and then the sampling drill bit is propelled along the direction of the output shaft of the drilling machine 4 to drill and sample.
The propelling speed of the drilling machine 4 is selected from the range of 5-10 cm/min, and the drilling machine should be kept stable all the time. The rotating speed of the drilling machine 4 is selected from the range of 500-1000 r/min, and the rotating speed of the drilling machine 4 is adjusted in real time according to the strength of the filling body and the drilling depth, and the higher the strength of the filling body is, the deeper the depth is, the faster the rotating speed of the drilling machine 4 is.
Compared with the handheld drilling sampling of the transmission, the invention can ensure the drilling stability, well inhibit the vibration, reduce the swinging of the drill bit and ensure the success rate of sampling by means of the base bracket.
If a single-tube single-action drill bit 7 is used, as shown in fig. 3, when drilling, the first annular bulge slides to the rear end, the first elastic valve is positioned in the first annular cavity and between the front end of the pipe body 7-1 and the first annular drill blade 7-6, the filler core smoothly enters the inside of the pipe body 7-1, and mud is discharged from the first mud hole 7-2. When the drill is lifted, as shown in fig. 4, the first annular protrusion slides to the front end under the action of friction force, and the first elastic valve is bent inwards and positioned at the rear side of the first annular drill blade 7-6, so that the filling body core is automatically cut off and prevented from falling off.
If a double-pipe single-action drill 8 is used, as shown in fig. 5, the second annular protrusion slides to the rear end during drilling, the second elastic valve is located in the second annular cavity and between the front end of the outer pipe 8-1 and the second annular drill blade 8-6, and a gap is left between the front end of the inner pipe 8-3 and the rear end of the second annular drill blade 8-6. The outer pipe 8-1 is rotated at a high speed, the inner pipe 8-3 is stationary under the action of the resistance of the filler, the filler core formed by the rotation cutting directly enters the inner pipe 8-3, and mud can pass through the gap and a gap between the inner pipe 8-3 and the outer pipe 8-1 and be discharged from the second mud discharge hole 8-2. When the drill is lifted, the second annular bulge slides to the front end under the action of friction force, and the second elastic valve is bent inwards and positioned at the rear side of the second annular drill blade 8-6, so that the filling body core is cut off and prevented from falling off, similar to the single-tube single-action drill 7.
And 5, taking out the filler core from the sampling drill bit, putting the filler core into the inner cylinder 9, putting the packaged inner cylinder 9 into a storage box, and transferring to a laboratory for sample preparation.
Specifically, for the single-tube single-action drill 7, the tube body 7-1 is directly taken down, and then the tube body 7-1 with the semi-closed tube structure is opened to take out the sample. For the double-tube single-action drill 8, the outer tube 8-1 is detached firstly, then the inner tube 8-3 is detached, finally the inner tube 8-3 is opened, and a sample is taken out.
As shown in fig. 6 to 8, the storage case includes a case body 12, a case cover 11, and a storage cylinder for being placed in a recess of the case body 12.
The storage cylinder can only comprise one inner cylinder 9, and can also be formed by connecting more than two inner cylinders 9 in series according to the length requirement.
Specifically, as shown in fig. 7, one end of the inner cylinder 9 is provided with a male spigot 9-1, and the other end is provided with a female spigot 9-3 for matching with the male spigot 9-1, and the spigot is used for realizing the serial connection. The inner cylinder 9 also adopts a semi-closed pipe structure, and the inner wall is lined with a soft cushion layer, so that the effects of shock absorption, sealing and sample protection are achieved. The side wall of the inner cylinder 9 is provided with an observation window 9-2, and the outer wall is provided with a label, so that the sample can be recorded.
The two ends of the storage cylinder are respectively provided with a sealing cover 10, and the storage cylinder is put into a box body 12 after being packaged, and a box cover 11 is covered.
Claims (7)
1. The utility model provides a cementing filling body sample system appearance device in pit which characterized in that: comprises a base bracket, a drilling machine (4), a hole breaking drill bit and a sampling drill bit;
the drilling machine (4) is arranged on the base bracket, and an output shaft of the drilling machine (4) is used for connecting a hole breaking drill bit and also used for connecting a sampling drill bit through an extension rod (6);
The sampling drill bit is a single-tube single-action drill bit (7) or a double-tube single-action drill bit (8);
The single-tube single-action drill bit (7) comprises a tube body (7-1), a pressure head (7-3), a first claw spring (7-5) and a first annular drill blade (7-6);
The pipe body (7-1) adopts a semi-closed pipe structure and consists of two semi-cylinders;
the pressure head (7-3) is arranged at the rear end of the pipe body (7-1) and is used for being connected with an output shaft of the drilling machine (4) through the extension rod (6);
a cylindrical first claw spring (7-5) is arranged at the front end orifice of the tube body (7-1) through a first fixing seat (7-4), and a plurality of first elastic petals bent towards the axis of the first claw spring (7-5) are arranged at the rear end of the first claw spring (7-5);
The inner hole of the first claw spring (7-5) is internally provided with the first annular drill blade (7-6), the front end of the first annular drill blade (7-6) is sharp, and the rear end of the first annular drill blade is provided with a first annular bulge; the first annular bulge slides back and forth in a first annular cavity formed between the first claw spring (7-5) and the pipe body (7-1); when the first annular bulge slides to the rear end, the first elastic valve is positioned in the first annular cavity and between the front end of the pipe body (7-1) and the first annular drill blade (7-6); when the first annular projection slides to the front end, the first elastic flap is bent inwards and is positioned at the rear side of the first annular drill edge (7-6);
A first through mud hole (7-2) is formed in the side wall of the rear part of the pipe body (7-1);
the double-tube single-action drill bit (8) comprises a single-action mechanism (8-9), an outer tube (8-1), an inner tube (8-3), a second claw spring (8-5) and a second annular drill blade (8-6);
The outer tube (8-1) is sleeved outside the inner tube (8-3), and a gap is formed between the outer tube (8-1) and the inner tube (8-3); the rear end of the outer tube (8-1) is connected with the extension bar (6) through a single-acting mechanism (8-9); the front end of the single-acting mechanism (8-9) is connected with the rear end of the inner tube (8-3) through a rotating bearing (8-8) so as to realize the relative rotation between the inner tube (8-3) and the outer tube (8-1);
the inner tube (8-3) is of a semi-closed tube structure and consists of two semi-cylinders;
a cylindrical second claw spring (8-5) is arranged at the front end orifice of the outer tube (8-1) through a second fixing seat (8-4), and a plurality of second elastic petals bent towards the axis of the second claw spring (8-5) are arranged at the rear end of the second claw spring (8-5);
The inner hole of the second claw spring (8-5) is internally provided with the second annular drill blade (8-6), the front end of the second annular drill blade (8-6) is sharp, and the rear end of the second annular drill blade is provided with a second annular bulge; the second annular bulge slides back and forth in a second annular cavity formed between the second claw spring (8-5) and the outer tube (8-1); when the second annular bulge slides to the rear end, the second elastic valve is positioned in the second annular cavity and between the front end of the outer tube (8-1) and the second annular drill blade (8-6), and a gap is reserved between the front end of the inner tube (8-3) and the rear end of the second annular drill blade (8-6); when the second annular projection slides to the front end, the second elastic flap is bent inwards and is positioned at the rear side of the second annular drill edge (8-6);
the side wall of the outer tube (8-1) is provided with a through second sludge discharge hole (8-2);
The rear part of the cavity of the inner tube (8-3) and the front side of the rotating bearing (8-8) are also provided with a baffle (8-7) for preventing mud from polluting the rotating bearing (8-8).
2. The downhole cemented filling body sampling and sample making device according to claim 1, wherein: external threads are arranged on the outer walls of the single-tube single-action drill bit (7) and the double-tube single-action drill bit (8).
3. The downhole cemented filling body sampling and sample making device according to claim 1, wherein: the base support comprises an upright post (1) and a lifting seat (2) which moves up and down along the upright post (1), wherein a sliding rail (3) is arranged on the lifting seat (2) in a rotating connection mode, and a locking device is arranged at the rotating connection position;
a sliding seat (5) is arranged on the sliding rail (3), and the drilling machine (4) is arranged on the sliding seat (5);
The base support also comprises a lifting driving mechanism for driving the lifting seat (2) to move up and down and a feeding driving mechanism for driving the sliding seat (5) to move back and forth.
4. A method for sampling and preparing a downhole cemented filling body is characterized in that: the method is based on the downhole cemented filling body sampling and sample making device of claim 1;
the method comprises the following steps:
Step 1, positioning and hole distribution are carried out according to the disclosure condition of an underground filling body, and sampling positions are determined; fixing a base bracket at a sampling position;
Step 2, selecting a sampling drill bit according to the strength of the filling body;
Step 3, connecting a broken hole drill bit on an output shaft of a drilling machine (4) on the base support, and removing a broken layer on the surface of the filling body by using the broken hole drill bit until reaching an undamaged area and exposing the filling body inside;
Step 4, taking down the hole breaking drill bit; connecting a sampling drill bit to an output shaft of a drilling machine (4) through an extension bar (6), adjusting and fixing the angle of the drilling machine (4) through a base bracket, and then propelling along the direction of the output shaft of the drilling machine (4) to drill and sample;
step 5, taking out the filler core from the sampling drill bit, putting the filler core into an inner cylinder (9), putting the packaged inner cylinder (9) into a storage box, and transferring the inner cylinder into a laboratory for sample preparation;
The preservation box comprises a box body (12), a box cover (11) and a storage barrel which is arranged in a groove of the box body (12);
the storage cylinder comprises an inner cylinder (9) or more than two inner cylinders (9) which are connected in series; one end of the inner cylinder (9) is provided with a convex spigot (9-1), and the other end is provided with a concave spigot (9-3) matched with the convex spigot (9-1); the inner cylinder (9) adopts a semi-closed pipe structure, the inner wall is lined with a soft cushion layer, and the side wall is provided with an observation window (9-2);
two ends of the storage cylinder are respectively provided with a sealing cover (10).
5. The downhole cemented filling body sampling method of claim 4, wherein: in the step 4, the propelling speed of the drilling machine (4) is 5-10 cm/min, and the rotating speed of the drilling machine (4) is 500-1000 r/min.
6. The downhole cemented filling body sampling method of claim 4, wherein: in the step 4, during drilling, the rotating speed of the drilling machine (4) is adjusted according to the strength of the filling body and the drilling depth, and the higher the strength of the filling body is, the deeper the depth is, the faster the rotating speed of the drilling machine (4) is.
7. The downhole cemented filling body sampling method of claim 4, wherein: in the step 2, when the strength of the filling body is less than 0.5MPa, a single-tube single-action drill bit (7) is selected as a sampling drill bit; when the strength of the filling body is more than or equal to 0.5MPa, a double-pipe single-action drill bit (8) is selected as a sampling drill bit.
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| CN202210680206.8A CN115059461B (en) | 2022-06-16 | 2022-06-16 | Method and device for sampling and preparing underground cemented filling body |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201047256Y (en) * | 2007-06-21 | 2008-04-16 | 北京市地质工程设计研究院 | Membrane barrier double tube single moving core drill tools |
| CN109779553A (en) * | 2019-03-07 | 2019-05-21 | 中国地质科学院勘探技术研究所 | A fully enclosed core sampling device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4694903A (en) * | 1986-06-20 | 1987-09-22 | Halliburton Company | Flapper type annulus pressure responsive tubing tester valve |
| CN211115979U (en) * | 2019-12-04 | 2020-07-28 | 中国地质科学院勘探技术研究所 | Low-disturbance sampling device for various ocean stratums |
| CN111502579B (en) * | 2020-04-27 | 2024-09-03 | 四川大学 | Automatic alarm's gallery pressurize coring equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201047256Y (en) * | 2007-06-21 | 2008-04-16 | 北京市地质工程设计研究院 | Membrane barrier double tube single moving core drill tools |
| CN109779553A (en) * | 2019-03-07 | 2019-05-21 | 中国地质科学院勘探技术研究所 | A fully enclosed core sampling device |
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