Micro-seismic sensor installation and recovery device suitable for small-aperture drilling

Abstract

The invention discloses a micro-seismic sensor installation and recovery device suitable for a small-aperture drill hole, which comprises a base, a micro-seismic sensor and a fastening structure connected with the tail part of the micro-seismic sensor, a plurality of foot supports are uniformly distributed on the fastening structure along the circumferential direction of the fastening structure, and the foot supports can move towards the outside of the fastening structure and are connected with the inner wall of the drill hole; the rotary table is connected with the fastening structure; the device further comprises a mounting rod which is connected with the rotary table and can drive the rotary table to rotate around the axis of the rotary table, and the rotary table rotates to drive the foot supports in the fastening structure to synchronously move outwards so as to abut against the inner wall of the drill hole. The device well solves the problems that a sensor recovery device is large in size and poor in installation timeliness, large-size drill holes do not need to be arranged in a targeted mode, and the device can be suitable for installation of small-drill-hole sensors. The problem of installation applicability of the sensor is well solved, the sensor can be additionally installed in a hole by temporarily arranging the small hole, and drilling of a specific size is not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of microseismic monitoring, and particularly to a microseismic sensor installation and recovery device suitable for small-diameter boreholes. Background Art

[0002] Microseismic monitoring technology is to use multiple sensors to collect rock mass micro-fracture signals, and through signal analysis technology and seismic source inversion methods, find the effective rock mass micro-fracture signals among numerous signals, obtain the time, location and nature of the occurrence of rock mass micro-fractures, and then infer the development trend of rock fractures based on microseismic source parameters, concentration degree, and fracture density, so as to realize the evaluation and monitoring of the stability of underground structures (rock bursts, collapses, water inrusions, etc.).

[0003] Since the 1990s, due to the introduction of modern computer and communication technologies, GPS time synchronization and positioning technology, and relevant knowledge of seismology, microseismic monitoring technology has made breakthrough progress and gradually developed from the early mechanical type to full digitalization. Multiple channels can be collected simultaneously, with high positioning accuracy, and great progress has been made in signal acquisition, resolution and processing. The research on microseismic monitoring technology in China mainly focuses on the development of coal mine rock bursts. In the early stage, it was in the trial application stage, mainly using seismographs, earphones and ground sound detectors, etc. With the development of technology, various microseismic monitoring systems have been widely used in deep engineering in China and have been continuously improved and upgraded. At present, microseismic monitoring technology has become an important means for monitoring and early warning of major rock engineering disasters such as hydropower station slope construction, mine exploitation, and tunnel construction.

[0004] The microseismic sensor layout scheme not only affects the monitoring range of microseismic signals, but also has a certain impact on the microseismic source positioning effect. A reasonable sensor layout scheme can not only monitor better-quality and more information-rich microseismic waveform data, but also improve the positioning accuracy of the seismic source location and the earthquake occurrence time.

[0005] At present, a large number of projects have adopted recoverable microseismic sensor installation devices and installation methods. However, due to the influence of the size of the sensor recovery device, the borehole diameters of bolts and other components arranged during the construction of deep projects such as tunnels, hydropower stations, and mines are relatively small, which cannot meet the sensor installation requirements. Usually, large-diameter boreholes need to be arranged specifically, which undoubtedly increases the installation cost, reduces the on-site construction efficiency to a certain extent, and may even lead to unreasonable sensor installation due to the failure to arrange large-diameter boreholes in time, resulting in untimely and inaccurate disaster monitoring and early warning, causing casualties and economic losses.

[0006] Therefore, the existing sensor installation and recovery methods have the following difficulties:

[0007] 1) The existing sensor recovery devices are relatively large in size, and large-diameter boreholes need to be arranged specifically, making it difficult to ensure the timeliness of installation;

[0008] 2) The existing sensor installation device has poor applicability and requires drilling with specific dimensions. In some engineering sites, the condition of temporarily drilling large-diameter holes is not available, so it cannot be used for subsequent supplementary sensor installation.

[0009] 3) Arranging large-diameter holes requires drill bits with specific dimensions. During drilling in some projects, work needs to stop, which affects the on-site construction efficiency to a certain extent.

[0010] Therefore, due to the above technical problems, those skilled in the art urgently need to develop a microseismic sensor installation and recovery device applicable to small-diameter holes. Summary of the Invention

[0011] The object of the present invention is to provide a microseismic sensor installation and recovery device applicable to small-diameter holes. This device is applicable to the installation and recovery of sensors in holes with different depths, solves the problems of large size and poor installation timeliness of the sensor recovery device, does not require targeted arrangement of large-size holes, and can be applicable to the installation of sensors in small holes.

[0012] To achieve the above object, the present invention provides the following technical solutions:

[0013] A microseismic sensor installation and recovery device applicable to small-diameter holes of the present invention includes:

[0014] A base, the base extends into the hole and is fixedly connected to the bottom of the hole;

[0015] A microseismic sensor, one end of the microseismic sensor is connected to the base, and one end of the tail of the microseismic sensor faces the outside of the hole;

[0016] A fastening structure connected to the tail of the microseismic sensor, and a plurality of foot supports are evenly distributed along the circumferential direction of the fastening structure, and the foot supports can move towards the outside of the fastening structure and be connected to the inner wall of the hole; and

[0017] A turntable connected to the fastening structure;

[0018] The device further includes:

[0019] An installation rod connected to the turntable and capable of driving the turntable to rotate around its axis, and the turntable rotates to drive the foot supports in the fastening structure to move outwards synchronously to abut against the inner wall of the hole.

[0020] Further, a fixing claw protruding from the base is provided at one end of the base that cooperates with the bottom of the hole, and the base is connected to the bottom of the hole through a plurality of the fixing claws;

[0021] In the middle of one end of the base that cooperates with the microseismic sensor, a base external stud protrudes, and the microseismic sensor is connected to the base through threaded connection with the base external stud.

[0022] Furthermore, the outer diameters of the fastening structure and the base are the same as the diameter of the microseismic sensor;

[0023] The fastening structure includes:

[0024] An integrally formed fastening structure main body and a fastening structure external stud;

[0025] The fastening structure main body is connected to the microseismic sensor. The fastening structure external stud has an external thread of the fastening structure, and the fastening structure is threadedly connected to the turntable through the external thread of the fastening structure;

[0026] A plurality of pedestal holes are formed in the circumferential direction of the fastening structure main body, and the footrests are provided in the pedestal holes, and the footrests are connected to the guide posts in the pedestal holes through springs.

[0027] Furthermore, a pedestal matching the pedestal hole protrudes from one end of the turntable that cooperates with the fastening structure, and the pedestal can extend into the pedestal hole and contact the footrest;

[0028] The turntable is threadedly connected to the fastening structure external stud through an internal thread of the turntable.

[0029] Furthermore, the turntable is connected to the mounting rod through a turntable adapter;

[0030] One end of the turntable that cooperates with the turntable adapter is configured as a regular hexagon boss, and the turntable adapter is provided with a regular hexagon hole matching the regular hexagon boss;

[0031] Inside the end of the turntable adapter away from the turntable, a circular hole matching the mounting rod is provided.

[0032] Furthermore, the outer diameters of the corresponding ends of the turntable and the turntable adapter are the same, and both are smaller than the diameter of the microseismic sensor.

[0033] Furthermore, the number of the mounting rods is at least one;

[0034] One end of the mounting rod is inserted into the circular hole of the turntable adapter and is connected to the turntable adapter through a plurality of pins extending radially along the turntable adapter.

[0035] Furthermore, adjacent mounting rods are connected through joints;

[0036] The joint is provided with a circular through-hole for embedding the mounting rod, and the joint is provided with a pin hole, and the mounting rod on the corresponding side is fixed by positioning with a corresponding pin.

[0037] Furthermore, vaseline is coated on the external stud of the base, the internal thread at the end of the microseismic sensor, the external stud of the fastening structure, and the internal thread of the turntable.

[0038] Furthermore, the length of the mounting rod is 1 m.

[0039] In the above technical solution, a microseismic sensor installation and recovery device suitable for small-diameter drilling provided by the present invention has the following beneficial effects:

[0040] The device of the present invention is applicable to the installation and recovery of sensors in drill holes of different depths, solves the problems of large size of the sensor recovery device and poor timeliness of installation, and does not require targeted arrangement of large-size drill holes, and can be applicable to the installation of sensors in small drill holes.

[0041] In order to prevent poor installation coupling caused by rusting between the base and the external stud of the fastening structure, and between the end of the sensor and the internal thread of the turntable during the installation of the sensor and the monitoring process, and to prevent the device from being unable to be reused multiple times, it is required to regularly apply vaseline to maintain the threads.

[0042] The device of the present invention is applicable to the installation and recovery of sensors in drill holes of different depths. Each mounting rod has a length of 1.0 m, and pin holes are provided at both ends of the mounting rod. Multiple mounting rods are connected in series through joints to achieve the series connection and disassembly of the mounting rods; during the operation, the footrest is driven to extend out of the fastening structure by rotating the operating rod, and when recovering, the operating rod is rotated in the reverse direction, and the footrest is retracted into the interior of the fastening structure by the support of the spring.

[0043] The device of the present invention is applicable to the installation in small-diameter drill holes. The outer diameter dimensions of all components except the sensor are not greater than the diameter of the sensor. At the same time, in order to prevent the sensor signal line from being wound around the mounting rod or being stuck and dragged during the rotation of the mounting rod, the sensor signal line passes through the fastening structure, the turntable, the turntable adapter and the inside of the mounting rod in sequence. During the rotation of the mounting rod, hold the signal line by hand to avoid the signal line rotating together with the mounting rod due to being stuck and dragged.

[0044] The device of the present invention preferably solves the problems of large size of the sensor recovery device and poor timeliness of installation, does not require targeted arrangement of large-size drill holes, and can be applicable to the installation of sensors in small drill holes. It preferably solves the problem of the applicability of sensor installation, can install sensors in holes by temporarily arranging small holes without requiring drill holes of specific sizes. It preferably solves the problem that arranging drill holes of specific sizes affects the on-site construction efficiency, and meets the requirement that sensors can also be installed in ordinary bolt holes (such as explosive holes). It saves the cost of microseismic monitoring and improves the economic benefits. Description of the Drawings

[0045] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0046] Figure 1 Structural schematic diagram of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0047] Figure 2a Front view of the fastening structure of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0048] Figure 2b Side view of the fastening structure of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0049] Figure 2c Top view of the fastening structure of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0050] Figure 3a Front view of the turntable of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0051] Figure 3b Side view of the turntable of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0052] Figure 3c Top view of the turntable of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0053] Figure 4a Front view of the turntable adapter of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0054] Figure 4b Side view of the turntable adapter of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0055] Figure 4c Top view of the turntable adapter of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in an embodiment of the present application;

[0056] Figure 5aThe front view of the joint of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in the embodiments of the present application;

[0057] Figure 5b The top view of the joint of a microseismic sensor installation and recovery device applicable to small-diameter drilling disclosed in the embodiments of the present application.

[0058] Explanation of reference numerals:

[0059] 1. Rock mass; 2. Fixed claw; 3. Base; 4. Microseismic sensor; 5. Fastening structure; 6. Guide post; 7. Table foot; 8. Turntable; 9. Outer stud of the fastening structure; 10. Pin hole; 11. Installation rod; 12. Sensor signal line; 13. Drilling; 14. Outer stud of the base; 15. Turntable connecting piece; 16. External thread of the outer stud of the base; 17. Tail; 18. Inner thread of the turntable; 19. Table foot hole; 20. Foot support; 21. Spring; 22. Joint; 23. End of the turntable connecting piece. Detailed implementation manners

[0060] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0061] See Figure 1 as shown in

[0062] The embodiments of the present application disclose a microseismic sensor installation and recovery device applicable to small-diameter drilling. The device includes:

[0063] A base 3, the base 3 extends into the drilling 13 and is fixedly connected to the bottom of the drilling 13;

[0064] A microseismic sensor 4, the end of the microseismic sensor 4 is connected to the base 3, and one end of the tail 17 of the microseismic sensor 4 faces the outside of the drilling 13;

[0065] A fastening structure 5 connected to the tail 17 of the microseismic sensor 4, and a plurality of foot supports 20 are evenly distributed along the circumferential direction of the fastening structure 5, and the foot supports 20 can move towards the outside of the fastening structure 5 and be connected to the inner wall of the drilling 13; and a turntable 8 connected to the fastening structure 5;

[0066] The device further includes:

[0067] An installation rod 11 connected to the turntable 8 and capable of driving the turntable 8 to rotate around its axis, and the turntable 8 rotates to drive the foot supports 20 in the fastening structure 5 to move outwards synchronously to abut against the inner wall of the drilling 13.

[0068] Specifically, this embodiment discloses a microseismic sensor installation and recovery device applicable to small-diameter drilling holes 13, which mainly includes a base 3, a microseismic sensor 4, a fastening structure 5, a turntable 8, and an installation rod 11. Among them, the microseismic sensor 4 is installed between the base 3 and the fastening structure 5. At the same time, the device of this embodiment is integrally extended into the drilling hole 13 and is fixedly connected to the bottom of the drilling hole 13 through the base 3. Secondly, after the fastening structure 5 is connected to the tail 17 of the microseismic sensor 4, the turntable 8 is installed. The fastening structure 5 and the turntable 8 of this embodiment mainly drive the movement of the footrests 20 inside the fastening structure 5 through the rotation of the turntable 8. The footrests 20 can move synchronously outward under the drive of the turntable 8 and abut against the inner wall of the drilling hole 13 to fix the microseismic sensor 4. In order to meet the driving requirements of the deep hole for the fastening structure 5 and the turntable 8, this embodiment uses the installation rod 11 to drive the rotation of the turntable 8 by externally connecting the installation rod 11, thereby driving the footrests 20 inside the fastening structure 5 to move outward.

[0069] Preferably, one end of the base 3 of this embodiment that cooperates with the bottom of the drilling hole 13 is provided with fixing claws 2 protruding from the base, and the base is connected to the bottom of the drilling hole 13 through multiple fixing claws 2;

[0070] In the middle of one end of the base 3 that cooperates with the microseismic sensor 4, a base external stud 14 protrudes. The microseismic sensor 4 is connected to the base 3 through threaded connection with the base external stud 14.

[0071] First of all, this embodiment further defines the structure of the base 3. One end of it is connected to the bottom of the drilling hole 13 through multiple fixing claws 2, and the other end protrudes to form a base external stud 14. The base external stud 14 is threadedly connected to the internal threaded hole at the corresponding end of the microseismic sensor 4 to realize the connection between the microseismic sensor 4 and the base 3. And the other end of the microseismic sensor 4 is connected to the above-mentioned fastening structure 5.

[0072] Preferably, the outer diameters of the fastening structure 5 and the base 3 of this embodiment are the same as the diameter of the microseismic sensor 4;

[0073] See Figures 2a - 2c As shown, the fastening structure 5 of this embodiment includes:

[0074] An integrally formed fastening structure main body and a fastening structure external stud 9;

[0075] The fastening structure main body is connected to the microseismic sensor 4. The fastening structure external stud 9 has a fastening structure external thread, and the fastening structure 5 is threadedly connected to the turntable 8 through the fastening structure external thread;

[0076] The fastening structure main body is provided with a plurality of pedestal foot holes 19 along its circumferential direction, and the pedestal foot holes 19 are provided with footrests 20, and the footrests 20 are connected to the guide posts 6 in the pedestal foot holes 19 through springs 21.

[0077] Based on the structure of the above-mentioned fastening structure 5, in this embodiment, the structure of the turntable 8 and the connection structure between the turntable 8 and the fastening structure 5 are further defined. Refer to Figures 3a - 3c As shown, specifically: One end of the turntable 8 in this embodiment that cooperates with the fastening structure 5 protrudes to form a pedestal 7 that matches the pedestal hole 19. The pedestal 7 can extend into the pedestal hole 19 and contact the footrest 20;

[0078] The turntable 8 is threadedly connected to the external stud 9 of the fastening structure through the internal thread 18 of the turntable.

[0079] In this embodiment, the structure of the fastening structure 5 and the structure of the turntable 8 are further defined. One end of the fastening structure 5 is directly connected to the microseismic sensor 4, and the other end is formed into an external stud 9 of the fastening structure. The external stud 9 of the fastening structure is used to connect the turntable 8, specifically through threaded connection. Four pedestal holes 19 are circumferentially and evenly distributed in the main body of the fastening structure, corresponding to the four pedestals 7 of the turntable 8, and the footrest 20 is movably connected through the pedestal hole 19 as a through-hole. At the same time, the footrest 20 and the guide post 6 in this embodiment are connected by a spring 21. At the same time, after the pedestal 7 of the turntable 8 extends into the corresponding pedestal hole 19, as the turntable 8 rotates, the corresponding footrest 20 can be driven by the pedestal 7 to move towards the outside of the fastening structure 5 and protrude to the outside of the fastening structure 5, so as to abut against the inner wall of the drill hole 13 to achieve connection.

[0080] Refer to Figures 4a to 4c As shown, preferably, the turntable 8 in this embodiment is connected to the mounting rod 11 through a turntable adapter 15;

[0081] One end of the turntable 8 that cooperates with the turntable adapter 15 is configured as a regular hexagon boss, and the turntable adapter 15 is provided with a regular hexagon hole that matches the regular hexagon boss; a circular hole that cooperates with the mounting rod 11 is provided inside the turntable adapter 15 at the end away from the turntable 8.

[0082] Among them, the outer diameters of the corresponding ends of the turntable 8 and the turntable adapter 15 in this embodiment are the same, and both are smaller than the diameter of the microseismic sensor 4.

[0083] In this embodiment, the connection structure between the turntable 8 and the mounting rod 11 is further defined. The two are connected through a turntable adapter 15. Among them, the turntable 8 and the turntable adapter 15 are connected through a regular hexagon boss and the corresponding regular hexagon hole, which is convenient for using the mounting rod 11 and the turntable adapter 15 to drive the turntable 8 to rotate. The other end of the turntable adapter 15 is then matched with the mounting rod 11 through a circular hole, and the positioning of the mounting rod 11 is realized by multiple radial pins. It should be noted that, for installation, holes for the pins to be embedded are correspondingly provided at both ends of the mounting rod 11. In this way, after the pins are installed, the connection between the mounting rod 11 and the turntable adapter 15 can be completed, so as to drive the turntable adapter 15 to rotate through the mounting rod 11, and finally realize the rotation of the turntable 8.

[0084] Preferably, the number of the mounting rods 11 in this embodiment is at least one;

[0085] One end of the mounting rod 11 is inserted into the circular hole of the turntable adapter 15 and is connected to the turntable adapter 15 by a plurality of pins extending radially along the turntable adapter 15.

[0086] See Figures 5a to 5b As shown, wherein, the adjacent mounting rods 11 in this embodiment are connected by a joint 22;

[0087] The joint 22 is provided with a circular through hole for embedding the mounting rod 11, and the joint 22 is provided with a pin hole 10 and positions and fixes the mounting rod 11 on the corresponding side through the corresponding pin.

[0088] Preferably, in order to avoid poor coupling caused by rust on the threaded part, resulting in non-reusability, the external stud 14 of the base, the internal thread at the end of the microseismic sensor, the external stud 9 of the fastening structure, and the internal thread 18 of the turntable in this embodiment are all coated with vaseline.

[0089] Preferably, the length of the mounting rod 11 in this embodiment is 1 m.

[0090] This embodiment is further explained and described in a preferred implementation manner:

[0091] First, the internal thread at the end of the microseismic sensor with a diameter of 5 mm is rotationally connected to the external stud 14 of the base by an external force. The outer diameter of the base 3 and the outer diameter of the fastening structure 5 are the same as the diameter of the microseismic sensor 4, both being 33 mm. The fastening structure 5 is installed at the tail 17 of the microseismic sensor with a height of 30 mm and a side length of 8.7 mm. The three 1-m-long mounting rods 11 with a diameter of 23 mm are connected in series through the pin holes 10 of the joint 22. There are a pair of pin holes 10 with a diameter of 4 mm above and below the joint 22. The end of the turntable adapter 15 with an inner diameter of 23 mm is connected to the mounting rod 11 through the pin hole. Subsequently, the turntable 8 with an inner diameter of 23 mm is installed on the external stud 9 of the fastening structure with an outer diameter of 23 mm, and it is required that the table feet 7 with a length of 3 mm, a width of 3 mm, and a height of 30 mm are inserted into the corresponding table foot holes 19. In this process, the microseismic sensor signal line 12 passes through the fastening structure 5, the turntable 8, the turntable adapter 15, and the mounting rod 11 in sequence. The whole device is placed at the bottom of the drilling installation hole, so that the fixing claws 2 are closely attached to the bottom of the hole. During the rotation of the mounting rod 11, hold the signal line 12 by hand until the foot support 20 with a height of 10 mm extends out of the fastening structure 5 along the guide post 6 with a diameter of 3 mm and is in close fit with the inner wall of the drilling 13. Then, the mounting rod 11 and the turntable adapter 15 can be pulled out to complete the installation of the microseismic sensor 4.

[0092] The process of removing the microseismic sensor 4 is as follows: Pass the sensor signal line 12 through the mounting rod 11 equipped with the turntable adapter 15, insert the turntable adapter 15 into the drilling mounting hole, make the turntable adapter 15 fit completely with the turntable 8, and rotate the mounting rod 11 in the reverse direction, so that the footrest 20 retracts into the fastening structure 5 along the guide post 6 under the pulling of the spring 21. At this time, firmly hold the signal line 12 of the microseismic sensor 4, and pull out the mounting rod 11 and the microseismic sensor 4 from the drilling mounting hole, and rotate the base 3 to separate from the microseismic sensor 4 to achieve the recovery of the sensor.

[0093] The above is only an explanation and description of each mechanism with a preferred size, but it cannot be used to limit the size of each mechanism of the present application. The size and shape of each mechanism of the device of the present application can be adjusted correspondingly according to the actual installation requirements of the drilling, and will not be elaborated here.

[0094] In the above technical solution, a microseismic sensor installation and recovery device applicable to small-diameter drilling provided by the present invention has the following beneficial effects:

[0095] The device of the present invention is applicable to the installation and recovery of sensors in drill holes 13 with different depths, solves the problems of large size of the sensor recovery device and poor timeliness of installation, and does not require targeted arrangement of large-size drill holes, and can be applicable to the installation of sensors in small drill holes.

[0096] In order to prevent poor installation coupling caused by rusting of the base 3 and the external stud 9 of the fastening structure and the end 17 of the sensor and the internal thread 18 of the turntable during the installation of the sensor and the monitoring process, and to prevent it from being reused multiple times, it is required to regularly apply vaseline to maintain the threads.

[0097] The device of the present invention is applicable to the installation and recovery of sensors in drill holes 13 with different depths. Each mounting rod 11 has a length of 1.0 m, and both ends of the mounting rod 11 are provided with pin holes 10. Multiple mounting rods 11 are connected in series through the joint 22 to achieve the series connection and disassembly of the mounting rods 11; during the operation process, the footrest 20 is driven to extend out of the fastening structure 5 by rotating the operating rod, and when recovering, the operating rod is rotated in the reverse direction, and the footrest 20 is supported by the spring 21 and retracts into the interior of the fastening structure 5.

[0098] The device of the present invention is applicable to the installation of small-diameter drill holes. The outer diameter dimensions of all components except the sensor are not greater than the diameter of the sensor. At the same time, in order to prevent the sensor signal line 12 from being wound around the mounting rod 11 or being stuck or dragged during the rotation of the mounting rod 11, the sensor signal line 12 passes through the fastening structure 5, the turntable 8, the turntable adapter 15 and the inside of the mounting rod 11 in sequence. During the rotation of the mounting rod 11, hold the signal line 12 by hand to avoid the signal line being rotated together with the mounting rod 11 due to being stuck or dragged.

[0099] The device of the present invention preferably solves the problems of large size and poor installation timeliness of the sensor recovery device, without the need for specifically arranged large-size drill holes, and is applicable to the installation of sensors in small drill holes. It preferably solves the problem of the applicability of sensor installation, and can supplement and install sensors in the holes by temporarily arranging small holes, without the need for drill holes of specific sizes 13. It preferably solves the problem that arranging drill holes of specific sizes affects the on-site construction efficiency, and meets the requirement that sensors can also be installed in ordinary bolt holes (such as explosive holes). It saves the cost of microseismic monitoring and improves economic benefits.

[0100] Only some exemplary embodiments of the present invention have been described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A microseismic sensor installation and recovery device suitable for small-diameter drilling, characterized in that: The device includes: A base (3), wherein the base (3) is inserted into the borehole (13) and is fixedly connected to the bottom of the borehole (13); A microseismic sensor (4), wherein an end of the microseismic sensor (4) is connected to the base (3), and a tail end of the microseismic sensor (4) faces an outer side of the borehole (13); A fastening structure (5) connected to the tail (17) of the microseismic sensor (4), wherein the fastening structure (5) has a plurality of foot supports (20) evenly distributed along its circumference, and the foot supports (20) are capable of moving toward the outside of the fastening structure (5) and connecting to the inner wall of the borehole (13); and A turntable (8) connected to the fastening structure (5); The device also includes: A mounting rod (11) is connected to the turntable (8) and is capable of driving the turntable (8) to rotate around its axis, and the turntable (8) rotates to drive the foot support (20) in the fastening structure (5) to move outward synchronously to abut against the inner wall of the drill hole (13).

2. The microseismic sensor installation and recovery device suitable for small-diameter drilling according to claim 1 is characterized in that: One end of the base (3) that cooperates with the bottom of the drill hole (13) is provided with a fixing claw (2) protruding from the base (3), and the base (3) is connected to the bottom of the drill hole (13) through a plurality of the fixing claws (2); An outer base stud (9) protrudes from the middle of one end of the base (3) and the microseismic sensor (4), and the microseismic sensor (4) is connected to the base (3) through a threaded connection with the outer base stud (9).

3. The microseismic sensor installation and recovery device suitable for small-diameter drilling according to claim 1 is characterized in that: The outer diameters of the fastening structure (5) and the base (3) are consistent with the diameter of the microseismic sensor (4); The fastening structure (5) comprises: An integrally formed fastening structure body and a fastening structure outer stud (9); The fastening structure body is connected to the microseismic sensor (4), the fastening structure external stud (9) has a fastening structure external thread (16), and the fastening structure (5) is threadedly connected to the turntable (8) via the fastening structure external thread (16); The fastening structure body is provided with a plurality of foot holes (19) along its circumference, and the foot holes (19) are provided with the foot supports (20), and the foot supports (20) are connected to the guide columns (6) in the foot holes (19) via springs (21).

4. The microseismic sensor installation and recovery device suitable for small-diameter drilling according to claim 3 is characterized in that: The turntable (8) cooperates with the fastening structure (5) to form a table foot (7) protruding from one end thereof and matching the table foot hole (19); the table foot (7) can extend into the table foot hole (19) and contact the foot support (20); The turntable (8) is threadedly connected to the outer stud (9) of the fastening structure via the turntable internal thread (18).

5. The microseismic sensor installation and recovery device suitable for small-diameter drilling according to claim 4, characterized in that: The turntable (8) is connected to the mounting rod (11) via a turntable connector (15); The mating end of the turntable (8) and the turntable connecting piece (15) is configured as a regular hexagonal boss, and the turntable connecting piece (15) is provided with a regular hexagonal hole matching the regular hexagonal boss; A circular hole matching the mounting rod (11) is provided inside the turntable connecting piece (15) at one end away from the turntable (8).

6. The microseismic sensor installation and recovery device suitable for small-diameter drilling according to claim 5, characterized in that: The outer diameters of the corresponding ends of the turntable (8) and the turntable connecting piece (15) are consistent, and both are smaller than the diameter of the microseismic sensor (4).

7. The microseismic sensor installation and recovery device suitable for small-diameter drilling according to claim 5, characterized in that: The number of the mounting rod (11) is at least one; One end of the mounting rod (11) is inserted into the circular hole of the turntable connecting piece (15), and is connected to the turntable connecting piece (15) via a plurality of pins extending radially along the turntable connecting piece (15).

8. The microseismic sensor installation and recovery device suitable for small-diameter drilling according to claim 7, characterized in that: Adjacent mounting rods (11) are connected via a joint (22); The joint (22) is provided with a circular through hole for embedding the installation rod (11), and the joint (22) is provided with a pin hole (10), and the installation rod (11) on the corresponding side is positioned and fixed by a corresponding pin.

9. The microseismic sensor installation and recovery device suitable for small-diameter drilling according to claim 5, characterized in that: The outer stud of the base (14), the inner thread of the end of the microseismic sensor, the outer stud of the fastening structure (9) and the inner thread of the turntable (18) are all coated with vaseline.

10. The microseismic sensor installation and recovery device suitable for small-diameter drilling according to claim 8, characterized in that: The length of the mounting rod (11) is 1 m.

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