CN113917525A - Underground vibration field test sensor array arrangement device and working method thereof - Google Patents
Underground vibration field test sensor array arrangement device and working method thereof Download PDFInfo
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- CN113917525A CN113917525A CN202111393167.5A CN202111393167A CN113917525A CN 113917525 A CN113917525 A CN 113917525A CN 202111393167 A CN202111393167 A CN 202111393167A CN 113917525 A CN113917525 A CN 113917525A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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Abstract
The invention relates to the field of geotechnical engineering tests, in particular to a soft soil underground vibration test technology, and particularly discloses an underground vibration field test sensor array arrangement device and a working method thereof, wherein the underground vibration field test sensor array arrangement device comprises a vibration sensor (1), a protective shell (2), a cable (3), an acquisition instrument (4), a compression bar (5), an adapter rod (6) and a static force press-in device (7); according to the device and the method for arranging the underground vibration field test sensor array, holes do not need to be drilled in advance at the positions of the test points, the vibration sensor (1) array is directly pressed into the appointed position and depth of the test points of the soil body (8) in sequence through the same set of reusable pressing rod (5) only through the static pressing device (7), the construction period is shortened, the vibration sensor (1) can be guaranteed to be in close contact with undisturbed soil, and the test efficiency and reliability are improved.
Description
Technical Field
The invention relates to the field of geotechnical engineering testing, in particular to a soft soil underground vibration testing technology, and particularly discloses an underground vibration field testing sensor array laying device and a working method thereof.
Background
With the rapid development of urban traffic, vibration induced by urban traffic load is increasingly frequent, and the vibration may influence the comfort of human bodies, the safety of building structures and the normal operation of vibration-sensitive precision instruments. The vibration can be horizontally transmitted on the surface of the soil body and also can be transmitted in the soil body. In order to solve the underground vibration field distribution and provide technical support for the construction of underground engineering, the sensor array type synchronous vibration test is necessary to be carried out on the underground vibration distribution rule.
In practical engineering, the traditional method for underground vibration testing generally comprises the steps of drilling a hole, protecting the wall by using a sleeve, and then placing a vibration sensor with a waterproof measure in the drilled hole. The conventional method has the following disadvantages:
(1) the drilling process produces a large amount of mud, which has a certain influence on the ecological environment.
(2) After drilling is completed, sludge in the hole needs to be cleaned, if the cleaning operation is not thorough, uncleaned sludge can be deposited at the bottom of the hole, and the contact effect of the sensor and the undisturbed soil body is influenced.
(3) When the number of vibration measuring points is large, the equipment installation period is long, and the method is not suitable for array type test.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a sensor array layout device for testing a subsurface vibration field and a working method thereof. According to the device and the method for arranging the underground vibration field test sensor array, holes do not need to be drilled in advance at the positions of the test points, the vibration sensor array is directly pressed into the appointed position and depth of each test point of a soil body in sequence through the same set of reusable pressing rod only through the static pressing device, the construction period is shortened, the vibration sensor can be ensured to be in close contact with undisturbed soil, and the test efficiency and reliability are improved.
The technical scheme of the invention is as follows:
a device for arranging measuring point arrays in an underground vibration field comprises a vibration sensor, a protective shell, a cable, an acquisition instrument, a pressure rod, a transfer rod and a static force press-in device; the vibration sensor is positioned in the protective shell and is connected with an external acquisition instrument through a cable, and the cable comprises a data line and a steel wire rope; the protective shell is connected with the switching rod above the protective shell through mutually matched bulges and grooves; a pressure rod is arranged above the adapter rod, and the adapter rod is connected with the pressure rod through threads; the pressure lever is installed in the static force pressing device. .
Furthermore, according to the underground vibration field measuring point array arrangement device, when the pressure rod is pressed downwards, the protective shell and the adapter rod are mutually pressed, and the protective shell is pressed downwards; when the pressure lever is lifted upwards, the protective shell is separated from the adapter lever, and the adapter lever and the pressure lever can be recovered by continuously lifting the pressure lever upwards and used for arranging the next vibration sensor.
Furthermore, according to the underground vibration field measuring point array arrangement device, two ends of the protective shell are conical, the center of the upper cone is provided with a cable hole, and a cable can be connected with the vibration sensor in the protective shell through the cable hole; meanwhile, a plurality of lifting lugs are arranged in the protective shell, and the steel wire rope in the cable can be fixed.
Furthermore, according to the device for arranging the underground vibration field measuring point array, the compression bar is formed by connecting a plurality of threaded bars end to end.
Furthermore, in the device for arranging the underground vibration field measuring point array, one end of the adapter rod is connected with the pressure rod through threads, and the other end of the adapter rod is connected with the upper cone of the protective shell through the conical groove; the lower end rod body of the pressure rod is provided with a notch, and the cable can be led out of the rod through the notch.
Further, the working method of the underground vibration field measuring point array arrangement device comprises the following steps:
s1, connecting the protective shell with the adapter rod and penetrating the protective shell from the static pressing device;
s2, sequentially connecting the pressure rods and pressing the pressure rods into the soil body by using a static force pressing device until the vibration sensor reaches a preset depth;
s3, lifting the pressure lever, and recovering the pressure lever and the adapter lever;
s4, connecting the data line with an acquisition instrument;
s5, replacing the measuring point position, repeating the steps 1-4, and continuously installing other soil body vibration sensors;
s6, after all the vibration sensors are installed, starting to acquire vibration data to acquire vibration field distribution;
and S7, after the data acquisition is finished, the vibration sensors are recovered one by one through a winch.
Compared with the prior art, the invention has the following beneficial effects:
(1) the data reliability is improved: when the traditional method is used for testing, the sensors are influenced by the deposited sludge in the holes to different degrees, and the direct contact with the undisturbed soil body cannot be guaranteed by 100%. When the invention is adopted, the sensor can be ensured to be in close contact with the soil body, and the reliability of data is further improved. Meanwhile, after the vibration sensor is pressed into the preset depth, the pressure rod can be recovered, so that the interference of the pressure rod is avoided, and the sleeve in the traditional method has certain influence on vibration.
(2) Reduce array sensor and lay step and cost, improve the work efficiency: the vibration sensor is pressed into a preset depth, the steps of drilling a hole, placing a sleeve and filling the hole after measurement are not needed, and a data line does not need to penetrate out of the pressure lever, so that the vibration sensor is simple and quick to operate, a large amount of field operation time and cost can be saved, and the equipment installation period and the number of personnel can be shortened to more than half of those of the traditional method.
(3) The test process is more labor-saving: when the traditional method is adopted for testing, in the process of putting the testing equipment into the hole downwards and taking the testing equipment out of the hole upwards, the connecting and disassembling processes of the connecting rod need manpower to continuously exert force upwards to keep the height of the equipment, and the process is very labor-consuming. When the invention is adopted, a hydraulic device is adopted on site to place the sensor, and personnel only need to do auxiliary work, so that the invention is more labor-saving compared with the traditional method.
Drawings
FIG. 1 is a schematic structural diagram of a measuring point array arrangement device in an underground vibration field
FIG. 2 is a state diagram of the pressing-in process of the underground vibration field measuring point array arrangement device
FIG. 3 is a state diagram of the underground vibration field measuring point array layout device during testing
FIG. 4 is a state diagram of a recycling process of the underground vibration field measuring point array arrangement device
FIG. 5 is a view showing the contact and disconnection state of the protection case with the transfer lever
FIG. 6 is a schematic view of the structure of the adapting rod
In the figure: the device comprises a vibration sensor 1, a protective shell 2, a cable 3, a collecting instrument 4, a pressure lever 5, a connecting lever 6, a static pressing device 7, a soil body 8 and a winding device 9.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
The device for arranging the underground vibration field measuring point array shown in the attached figures 1-6 comprises a vibration sensor 1, a protective shell 2, a cable 3, an acquisition instrument 4, a pressure lever 5, a switching lever 6 and a static force press-in device 7; the vibration sensor 1 is positioned in the protective shell 2, the vibration sensor 1 is connected with an external acquisition instrument 4 through a cable 3, and the cable 3 comprises a data line and a steel wire rope; the protective shell 2 is connected with the switching rod 6 above the protective shell through mutually matched bulges and grooves; a pressure rod 5 is arranged above the adapter rod 6, and the adapter rod 6 is in threaded connection with the pressure rod 5; the press rod 5 is installed in the static force pressing device 7.
The working method of the underground vibration field measuring point array arrangement device comprises the following steps:
s1, the protective shell 2 is connected with the adapter rod 6 and penetrates through the static force pressing device 7;
s2, sequentially connecting the pressure rods 5 and pressing the soil body 8 by using the static pressing device 7 until the vibration sensor 1 reaches a preset depth;
s3, lifting the pressure lever 5, and recovering the pressure lever 5 and the adapter lever 6;
s4, connecting the data line with the acquisition instrument 4;
s5, replacing the measuring point position, repeating the steps 1-4, and continuously installing other soil mass vibration sensors 1;
s6, after all the vibration sensors 1 are installed, starting to acquire vibration data to acquire vibration field distribution;
after the data acquisition of S7 is completed, the vibration sensors are recovered one by the hoist 9.
Example 2
The device for arranging the underground vibration field measuring point array shown in the attached figures 1-6 comprises a vibration sensor 1, a protective shell 2, a cable 3, an acquisition instrument 4, a pressure lever 5, a switching lever 6 and a static force press-in device 7; the vibration sensor 1 is positioned in the protective shell 2, the vibration sensor 1 is connected with an external acquisition instrument 4 through a cable 3, and the cable 3 comprises a data line and a steel wire rope; the protective shell 2 is connected with the switching rod 6 above the protective shell through mutually matched bulges and grooves; a pressure rod 5 is arranged above the adapter rod 6, and the adapter rod 6 is in threaded connection with the pressure rod 5; the compression rod 5 is arranged in the static force pressing-in device 7; preferably, when the pressure lever 5 is pressed downwards, the protective shell 2 and the adapter lever 6 are pressed against each other, and the protective shell 2 is pressed downwards; when the pressure lever 5 is lifted upwards, the protective shell 2 is separated from the adapter lever 6, and the adapter lever 6 and the pressure lever 5 can be recovered by continuously lifting the pressure lever 5 upwards and used for the arrangement of the next vibration sensor 1; furthermore, two ends of the protective shell 2 are conical, a cable hole is formed in the center of the upper cone, and the cable 3 can be connected with the vibration sensor 1 in the protective shell 2 through the cable hole; meanwhile, a plurality of lifting lugs are arranged in the protective shell 2 and can fix the steel wire rope in the cable 3; particularly, the compression bar 5 is formed by connecting a plurality of threaded bars end to end; furthermore, one end of the adapter rod 6 is connected with the pressure rod 5 through threads, and the other end of the adapter rod is connected with the upper cone of the protective shell 2 through a conical groove; a notch is arranged on the lower end rod body of the pressure rod 5, and the cable 3 can be led out of the rod through the notch; in particular, when the connecting rod 6 is lifted, the cable 3 can automatically come out of the notch in the process of mutual separation between the connecting rod 6 and the protective shell 2.
The working method of the underground vibration field measuring point array arrangement device comprises the following steps:
s1, the protective shell 2 is connected with the adapter rod 6 and penetrates through the static force pressing device 7;
s2, sequentially connecting the pressure rods 5 and pressing the soil body 8 by using the static pressing device 7 until the vibration sensor 1 reaches a preset depth;
s3, lifting the pressure lever 5, and recovering the pressure lever 5 and the adapter lever 6;
s4, connecting the data line with the acquisition instrument 4;
s5, replacing the measuring point position, repeating the steps 1-4, and continuously installing other soil mass vibration sensors 1;
s6, after all the vibration sensors 1 are installed, starting to acquire vibration data to acquire vibration field distribution;
after the data acquisition of S7 is completed, the vibration sensors are recovered one by the hoist 9.
The above are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and all the equivalent changes and modifications made by the claims and the summary of the invention should be covered by the protection scope of the present patent application.
Claims (7)
1. The underground vibration field measuring point array arrangement device is characterized by comprising a vibration sensor (1), a protective shell (2), a cable (3), an acquisition instrument (4), a pressure lever (5), a switching lever (6) and a static force press-in device (7); the vibration sensor (1) is positioned inside the protective shell (2), the vibration sensor (1) is connected with an external acquisition instrument (4) through a cable (3), and the cable (3) comprises a data line and a steel wire rope; the protective shell (2) is connected with the switching rod (6) above the protective shell through mutually matched bulges and grooves; a pressure rod (5) is arranged above the adapter rod (6), and the adapter rod (6) is connected with the pressure rod (5) through threads; the pressure lever (5) is arranged in the static force pressing-in device (7).
2. The underground vibration field measuring point array arrangement device is characterized in that when the pressure rod (5) is pressed downwards, the protective shell (2) and the adapter rod (6) are mutually pressed, and the protective shell (2) is pressed downwards; when the pressure lever (5) is lifted upwards, the protective shell (2) is separated from the adapter lever (6), and the adapter lever (6) and the pressure lever (5) can be recovered by continuously lifting the pressure lever (5) upwards and used for arranging the next vibration sensor (1).
3. The underground vibration field measuring point array arrangement device is characterized in that two ends of the protective shell (2) are conical, the center of the upper cone is provided with a cable hole, and a cable (3) can be connected with the vibration sensor (1) in the protective shell (2) through the cable hole; meanwhile, a plurality of lifting lugs are arranged in the protective shell (2) and can fix the steel wire rope in the cable (3).
4. The underground vibration field measuring point array arrangement device as claimed in claim 1, wherein the compression bar (5) is formed by connecting a plurality of threaded bars end to end.
5. The underground vibration field measuring point array arrangement device is characterized in that one end of the adapter rod (6) is connected with the pressure rod (5) through threads, and the other end of the adapter rod is connected with an upper cone of the protective shell (2) through a conical groove; the lower end rod body of the pressure rod (5) is provided with a notch, and the cable (3) can be led out of the rod through the notch.
6. The underground vibration field measuring point array arrangement device as claimed in claim 5, wherein when the rotation rod (6) is lifted up, the cable (3) can automatically come out of the gap in the process of mutual separation between the rotation rod (6) and the protective shell (2).
7. The working method of the underground vibration field measuring point array arrangement device as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
s1, the protective shell (2) is connected with the adapter rod (6) and penetrates through the static force pressing device (7);
s2, sequentially connecting the pressure rods (5) and pressing the soil body (8) by using a static pressing device (7) until the vibration sensor (1) reaches a preset depth;
s3, lifting the pressure lever (5), the recovery pressure lever (5) and the adapter lever (6);
s4, connecting the data line with the acquisition instrument (4);
s5, replacing the measuring point position, repeating the steps 1-4, and continuously installing other soil mass vibration sensors (1);
s6, after all the vibration sensors (1) are installed, starting to acquire vibration data and acquiring vibration field distribution;
and after the data acquisition of S7 is finished, the vibration sensors are recovered one by one through a winch (9).
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| CN202111393167.5A CN113917525A (en) | 2021-11-23 | 2021-11-23 | Underground vibration field test sensor array arrangement device and working method thereof |
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| CN202111393167.5A CN113917525A (en) | 2021-11-23 | 2021-11-23 | Underground vibration field test sensor array arrangement device and working method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532810A (en) * | 2022-09-28 | 2022-12-30 | 上海勘察设计研究院(集团)有限公司 | Intelligent soil remediation project medicament injection device that can dynamically adjust |
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| CN109709599A (en) * | 2019-01-15 | 2019-05-03 | 东北大学 | Apparatus and method for installing and recovering microseismic sensors in broken and easily collapsible rock mass |
| CN109991656A (en) * | 2019-04-15 | 2019-07-09 | 武汉理工大学 | A hot melt adhesive-based microseismic sensor hole installation recovery device |
| CN112649850A (en) * | 2020-12-22 | 2021-04-13 | 上海勘察设计研究院(集团)有限公司 | Static force press-in type underground soil body vibration testing device and method |
| CN216718718U (en) * | 2021-11-23 | 2022-06-10 | 上海勘察设计研究院(集团)有限公司 | Underground vibration field test sensor array layout device |
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2021
- 2021-11-23 CN CN202111393167.5A patent/CN113917525A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792569A (en) * | 2014-02-18 | 2014-05-14 | 中国科学院武汉岩土力学研究所 | Device for installing and recovering micro-vibration sensor in aquiferous weak rock-soil body deep hole |
| CN104142388A (en) * | 2014-07-16 | 2014-11-12 | 安徽省城建设计研究院 | In-situ static force pressing testing device and method in drill hole |
| CN109709599A (en) * | 2019-01-15 | 2019-05-03 | 东北大学 | Apparatus and method for installing and recovering microseismic sensors in broken and easily collapsible rock mass |
| CN109991656A (en) * | 2019-04-15 | 2019-07-09 | 武汉理工大学 | A hot melt adhesive-based microseismic sensor hole installation recovery device |
| CN112649850A (en) * | 2020-12-22 | 2021-04-13 | 上海勘察设计研究院(集团)有限公司 | Static force press-in type underground soil body vibration testing device and method |
| CN216718718U (en) * | 2021-11-23 | 2022-06-10 | 上海勘察设计研究院(集团)有限公司 | Underground vibration field test sensor array layout device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115532810A (en) * | 2022-09-28 | 2022-12-30 | 上海勘察设计研究院(集团)有限公司 | Intelligent soil remediation project medicament injection device that can dynamically adjust |
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