Integrated ground stress and microseismic monitoring device

Abstract

The present invention relates to the field of rock engineering detection technology, and discloses an integrated ground stress and microseismic monitoring device, including a grouting pipe, wherein the outer ring of the grouting pipe is fixedly sleeved with an isolation component, the interior of the isolation component is provided with a sliding mechanism that is slidably sleeved on the outer ring of the grouting pipe, one end of the sliding mechanism is rotatably sleeved with a driving part connected to the isolation component, the outer ring of the sliding mechanism is fixedly connected with an adjustment mechanism distributed in an array along the axis of the grouting pipe, and the adjustment mechanism is connected to a positioning mechanism that is slidably connected to the isolation component. The present invention avoids the occurrence of inaccurate stress contact at the local detection site due to improper installation operation, reduces the error caused by improper installation operation during stress detection, and improves detection efficiency and accuracy; reduces the interference of seepage water on detection accuracy, avoids the corrosion of seepage water on detection components, improves the service life and safety of the equipment, and reduces the stability during the installation and fixing process.

Description

Technical Field

[0001] The present invention relates to the technical field of rock engineering detection, and in particular to an integrated ground stress and microseismic monitoring device. Background Art

[0002] The engineering properties of surrounding rock generally include three aspects: physical properties, hydraulic properties, and mechanical properties. The mechanical properties, or the ability of surrounding rock to resist deformation and damage, are the most influential factors in the stability of surrounding rock. During the construction of deep engineering projects such as deep tunnels and underground caverns, it is necessary to test the properties of surrounding rock. Stress is a key determinant of rock mechanical behavior. This is typically done by drilling test holes in the surrounding rock and using stress sensors to measure surrounding rock stress. However, this method is ineffective for detecting the development of surrounding rock cracks, so microseismic sensors are used for auxiliary monitoring.

[0003] The existing stress and microseismic detection of surrounding rocks is inconvenient to operate and has poor coordination. At the same time, water penetrating the surrounding rocks can easily interfere with the accuracy of the detection components and can also corrode the components of the detection components. Therefore, an integrated ground stress and microseismic monitoring device is proposed. Summary of the Invention

[0004] In order to solve the technical problems existing in the prior art, the present invention provides an integrated ground stress and microseismic monitoring device.

[0005] The present invention is implemented by the following technical solutions: an integrated ground stress and microseismic monitoring device comprises a grouting pipe, an outer ring of the grouting pipe is fixedly sleeved with an isolation assembly, an interior of the isolation assembly is provided with a sliding mechanism that is slidably sleeved on the outer ring of the grouting pipe, one end of the sliding mechanism is rotatably sleeved with a driving part connected to the isolation assembly, an outer ring of the sliding mechanism is fixedly connected with an adjustment mechanism distributed in an array along the axis of the grouting pipe, the adjustment mechanism is connected to a positioning mechanism that is slidably connected to the isolation assembly, a switching mechanism that is connected to the adjustment mechanism and is used to adjust the state of the isolation assembly is provided on one side of the positioning mechanism, a withdrawal mechanism connected to the isolation assembly is installed at both ends of the positioning mechanism, an air supply mechanism for adjusting the sealing state of the isolation assembly is connected at both ends of the adjustment mechanism, and a detection assembly distributed in an array and engaged with the sliding mechanism is provided between the isolation assembly and the grouting pipe;

[0006] The sliding mechanism includes two sets of movable plates that are slidably sleeved on the outer ring of the grouting pipe and slide along the length direction of the grouting pipe. The ends of the two sets of movable plates that are away from each other are fixedly connected to a supporting pipe that is coaxially arranged with the grouting pipe. A rack distributed in an array along the axis of the grouting pipe is fixedly connected between the two sets of movable plates, and the rack is engaged with the adjacent detection assembly. The driving part is rotatably connected to the adjacent supporting pipe, and the adjustment mechanism is arranged on the outer side wall of the supporting pipe.

[0007] The isolation assembly includes two groups of end covers fixedly sleeved on the outer ring of the grouting pipe, an isolation mechanism coaxially arranged with the grouting pipe is fixedly connected between the two groups of end covers, the outer ring of the isolation mechanism is rotatably sleeved with a protective mechanism engaged with the adapter mechanism, and the outer ring of the end cover is fixedly sleeved with a sealing mechanism connected to the air supply mechanism.

[0008] Through the above technical solution, the grouting pipe is put into the detection hole, and the driving part is used to drive the sliding mechanism to start moving. First, the isolation mechanism is driven to open, and the positioning mechanism is first extended to the outside of the end cover. The positioning mechanism contacts the inner wall of the detection hole to perform a positioning operation on the detection device. Thereafter, the detection component is extended from the isolation mechanism, and the detection component contacts the inner wall of the detection hole after being extended. At the same time, the sealing mechanism is sealed and contacted with the detection hole from the outside of the end cover, and is sealed from the outer rings of the two groups of end covers and from the front and rear ends of the detection hole. Thereafter, the grouting pipe is used for grouting and fixing. After the grouting is completed, the sampling unit on the detection component is used to collect the stress of the detection hole and the microwave signal of the surrounding rock.

[0009] As a further improvement of the above scheme, the detection assembly includes a base fixedly connected to the outer wall of the grouting pipe, a T-shaped transition groove is opened at the other end of the base, a driven tube is rotatably sleeved at the opening of the transition groove, the outer ring of the driven tube is fixedly sleeved with a gear meshing with the rack, the outer ring of the end of the gear away from the base is threadedly sleeved with a lifting tube, the outer ring of the lifting tube is slidably sleeved with a guide tube that slides along its length and is fixed to the isolation assembly, the inner ring of the end of the lifting tube away from the base is fixedly sleeved with a sampling unit, the bottom of the sampling unit is connected to a cable 1 with a spiral structure located inside the driven tube, the cable 1 extends to one end of the transition groove and is connected to a cable 2 fixed to the base, and the sampling unit adopts any one of a strain sensor and a microseismic sensor.

[0010] Through the above technical solution, when the gear rotates, it drives the driven tube to rotate, causing the lifting tube to move along its length direction, thereby causing the lifting tube to extend from the detection hole on the isolation mechanism. According to the detection needs, the sampling unit selects one of the strain sensor and the microseismic sensor. In order to facilitate detection, during installation, the strain sensor is made to contact the inner wall of the detection hole, and a certain gap is reserved between the microseismic sensor and the inner wall of the detection hole.

[0011] As a further improvement to the above solution, the isolation mechanism includes a support tube fixedly connected between the two sets of end covers, and the protection mechanism is slidably sleeved on the outer ring of the support tube, the support tube is penetrated by an arc-shaped insertion channel arranged coaxially therewith, and the support tube is penetrated by detection holes distributed along the array thereof;

[0012] The protection mechanism includes a protection tube rotatably sleeved on the outer ring of the support tube, the protection tube having an extension channel running through it, the inner ring of the protection tube being fixedly connected to a sliding plate with an arc-shaped structure that is slidably connected to the adjacent insertion channel, and the sliding plate extending from the insertion channel to the inner concave surface of one side of the support tube being fixedly connected to a toothed plate with an arc-shaped structure that meshes with the adapter mechanism;

[0013] The sealing mechanism includes a sealing airbag of an annular structure fixedly sleeved on the outer ring of the end cover; the end cover is fixedly sleeved with an air pipe connected to the sealing airbag; the air pipe extends to one end of the end cover and is connected to the air supply mechanism.

[0014] Through the above technical solution, when no detection is performed, the protective tube closes the detection hole on the support tube, so that the isolation component is in an internal and external isolation state.

[0015] As a further improvement of the above-mentioned scheme, the adjustment mechanism includes a horizontal plate fixed to the outer side wall of the supporting tube, the horizontal plate is penetrated by an inclined extrusion channel, and a retaining channel penetrating the horizontal plate is provided at one end of the extrusion channel away from the movable plate. The extrusion channel is slidably connected to a pushing shaft, one end of the pushing shaft extending out of the extrusion channel is fixed to the transfer mechanism, and the other end of the pushing shaft extending out of the extrusion channel is fixed to a connecting frame fixed to the positioning mechanism.

[0016] Through the above technical solution, the state adjustment operation of the isolation component, the positioning mechanism and the sealing mechanism is realized.

[0017] As a further improvement of the above solution, the transfer mechanism includes a pushing screw fixed to the adjustment mechanism, the other end of the pushing screw is threadedly sleeved with a rotating tube rotatably sleeved with the isolation mechanism, and the outer ring of the rotating tube is fixedly sleeved with a bevel gear meshing with the protection mechanism.

[0018] Through the above technical solution, when the driving shaft moves, the protection mechanism is driven to rotate in the isolation mechanism to adjust the state of the protection mechanism.

[0019] As a further improvement of the above-mentioned solution, the driving part includes a locking tube fixedly connected to the outside of the adjacent end cover shell, and the inner circle of the locking tube is threadedly sleeved with an adjustment rod movably sleeved with the end cover shell. One end of the adjustment rod extends into the end cover shell and is rotatably connected to the end of the adjacent supporting tube. The locking tube is penetrated by a locking hole connected to its interior, and the adjustment rod is provided with a positioning hole for locking.

[0020] Through the above technical solution, the sliding mechanism is adjusted from the end of the end cover, which is convenient for operation from the end of the detection mechanism.

[0021] As a further improvement of the above-mentioned solution, the air supply mechanism includes a storage box with an annular structure fixed to an adjacent end cover shell, a piston plate with an annular structure coaxially arranged therewith being slidably connected inside the storage box, the piston plate is fixed with a piston rod which is slidably sleeved with the storage box, one end of the piston rod extending out of the storage box is fixedly connected to an adjacent supporting tube, and the storage box is connected to the sealing mechanism.

[0022] Through the above technical solution, the medium stored in the storage box is transferred to the sealing mechanism, which facilitates the sealing of the sealing mechanism.

[0023] As a further improvement of the above solution, the positioning mechanism includes a support plate arranged inside the isolation mechanism and along the length direction of the isolation mechanism. The support plate is fixed to the adjustment mechanism, and both ends of the support plate are fixed with positioning rods that are slidably connected to the adjacent end cover.

[0024] Through the above technical solution, the positioning operation is carried out synchronously under the drive of the adjustment mechanism, ensuring the interference fixation and positioning operation of the detection device and the detection hole.

[0025] As a further improvement of the above-mentioned scheme, the extraction mechanism includes a collection cover with an annular structure fixedly sleeved on the inner wall of the end cover, the inner ring of the collection cover is fixedly connected to a discharge pipe, and the end cover is penetrated by discharge holes distributed in an array along its axis, and the discharge holes are connected to the collection cover.

[0026] As a further improvement of the above solution, a drainage pipe and a main cable fixedly connected to the isolation component are installed on one side of the driving part. The drainage pipe is connected to the extraction mechanism, and the main cable is connected to the detection component.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention realizes the synchronous acquisition operation of ground stress and microwave signals in different directions in underground surrounding rock tunnel projects in the same hole, adopts the method of first positioning and then sealing and extracting to perform installation and acquisition operations, ensuring that the initial detection position of each stress detection site is always consistent, avoiding the occurrence of inaccurate site stress contact due to improper installation operation at local detection sites, reducing the error caused by improper installation operation during stress detection, and improving detection efficiency and accuracy.

[0029] The present invention extracts the water deposited and leaked in the detection space during grouting reinforcement and subsequent detection processes, reduces the interference of seepage water on detection accuracy, avoids the corrosion of detection components by seepage water, improves the service life and safety of the equipment, and reduces stability during installation and fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of the integrated ground stress and microseismic monitoring device provided by the present invention;

[0031] Figure 2 A cross-sectional view of the integrated ground stress and microseismic monitoring device provided by the present invention;

[0032] Figure 3 The present invention provides Figure 2 A partial enlarged view of the

[0033] Figure 4 A schematic structural diagram of the isolation mechanism provided by the present invention;

[0034] Figure 5 A schematic structural diagram of the protection mechanism provided by the present invention;

[0035] Figure 6 A schematic structural diagram of the horizontal plate provided by the present invention;

[0036] Figure 7 This is a structural diagram of the detection component provided by the present invention.

[0037] Description of main symbols:

[0038] 1. Grouting pipe; 2. End cover; 3. Isolation mechanism; 4. Protection mechanism; 5. Sealing mechanism; 6. Sliding mechanism; 7. Driving unit; 8. Adjustment mechanism; 9. Air supply mechanism; 10. Positioning mechanism; 11. Extraction mechanism; 12. Transfer mechanism; 13. Detection assembly; 21. Base; 22. Transition groove; 23. Driven pipe; 25. Lifting pipe; 26. Guide pipe; 27. Sampling unit; 28. Gear; 31. Support pipe; 32. Detection hole; 33. Insertion channel; 41. Protection pipe; 42. Sliding plate; 43. Tooth plate; 61. Movable plate; 62. Rack; 63. Supporting pipe; 81. Horizontal plate; 82. Extrusion channel; 83. Holding channel; 84. Push shaft; 85. Connecting frame. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0040] Example 1

[0041] Please combine Figure 1-Figure 7, the integrated ground stress and microseismic monitoring device of this embodiment includes a grouting pipe 1, the outer ring of the grouting pipe 1 is fixedly sleeved with an isolation component, the interior of the isolation component is provided with a sliding mechanism 6 that is slidably sleeved on the outer ring of the grouting pipe 1, one end of the sliding mechanism 6 is rotatably sleeved with a driving part 7 connected to the isolation component, the outer ring of the sliding mechanism 6 is fixedly connected with an adjustment mechanism 8 distributed in an array along the axis of the grouting pipe 1, the adjustment mechanism 8 is connected to a positioning mechanism 10 that is slidably connected to the isolation component, a switching mechanism 12 that is connected to the adjustment mechanism 8 and is used to adjust the state of the isolation component is provided on one side of the positioning mechanism 10, a withdrawal mechanism 11 connected to the isolation component is installed at both ends of the positioning mechanism 10, and an air supply mechanism 9 for adjusting the sealing state of the isolation component is connected at both ends of the adjustment mechanism 8, and a detection component 13 distributed in an array and engaged with the sliding mechanism 6 is provided between the isolation component and the grouting pipe 1;

[0042] The sliding mechanism 6 includes two sets of movable plates 61 that are slidably sleeved on the outer ring of the grouting pipe 1 and slide along the length direction of the grouting pipe 1. The ends of the two sets of movable plates 61 that are away from each other are fixedly connected to a supporting tube 63 that is coaxially arranged with the grouting pipe 1. A rack 62 distributed in an array along the axis of the grouting pipe 1 is fixedly connected between the two sets of movable plates 61, and the rack 62 is engaged with the adjacent detection assembly 13. The driving part 7 is rotatably connected to the adjacent supporting tube 63, and the adjustment mechanism 8 is arranged on the outer wall of the supporting tube 63;

[0043] The isolation assembly includes two groups of end covers 2 fixedly sleeved on the outer ring of the grouting pipe 1, and an isolation mechanism 3 coaxially arranged with the grouting pipe 1 is fixedly connected between the two groups of end covers 2. The outer ring of the isolation mechanism 3 is rotatably sleeved with a protective mechanism 4 engaged with the adapter mechanism 12, and the outer ring of the end cover 2 is fixedly sleeved with a sealing mechanism 5 connected to the air supply mechanism 9.

[0044] The implementation principle of the integrated ground stress and microseismic monitoring device in the embodiment of the present application is as follows: the grouting pipe 1 is put into the detection hole, and the driving part 7 is used to drive the sliding mechanism 6 to start moving, first driving the isolation mechanism 3 to open, and first extending the positioning mechanism 10 to the outside of the end cover 2, the positioning mechanism 10 contacts the inner wall of the detection hole, and the detection device is positioned. Thereafter, the detection component 13 is extended from the isolation mechanism 3, and the detection component 13 is extended and contacts the inner wall of the detection hole. At the same time, the sealing mechanism 5 is sealed and contacted with the detection hole from the outside of the end cover 2, and is sealed from the outer rings of the two groups of end cover shells 2, and is sealed from the front and rear ends of the detection hole. Thereafter, the grouting pipe 1 is used for grouting and fixing. After the grouting is completed, the sampling unit on the detection component 13 is used to collect the stress of the detection hole and the microwave signal of the surrounding rock.

[0045] Example 2

[0046] The detection assembly 13 includes a base 21 fixedly connected to the outer wall of the grouting pipe 1, and a T-shaped transition groove 22 is provided at the other end of the base 21. A driven tube 23 is rotatably sleeved at the opening of the transition groove 22. The outer ring of the driven tube 23 is fixedly sleeved with a gear 28 meshing with the rack 62. The outer ring of the gear 28 away from the base 21 is threadedly sleeved with a lifting tube 25. The outer ring of the lifting tube 25 is slidably sleeved with a guide tube 26 that slides along its length and is fixed to the isolation assembly. The inner ring of the end of the lifting tube 25 away from the base 21 is fixedly sleeved with a sampling unit 27. The bottom of the sampling unit 27 is connected to a cable 1 with a spiral structure located inside the driven tube 23. The end of the cable 1 extending to the transition groove 22 is connected to a cable 2 fixed to the base 21. The sampling unit 27 adopts any one of a strain sensor and a microseismic sensor. The guide tube 26 is coaxially arranged with the adjacent detection hole 32, and the guide tube 26 is fixed to the inner wall of the support tube 31.

[0047] Example 3

[0048] The isolation mechanism 3 includes a support tube 31 fixed between the two sets of end covers 2, and the protection mechanism 4 is slidably sleeved on the outer ring of the support tube 31. The support tube 31 is penetrated by a circular arc-shaped insertion channel 33 arranged coaxially therewith, and the support tube 31 is penetrated by detection holes 32 distributed along the support tube 31.

[0049] The protection mechanism 4 includes a protection tube 41 rotatably sleeved on the outer ring of the support tube 31. The protection tube 41 has an extension channel 44 extending therethrough. The inner ring of the protection tube 41 is fixedly connected to a sliding plate 42 with an arc-shaped structure that is slidably connected to the adjacent insertion channel 33. The sliding plate 42 extends from the insertion channel 33 to the inner concave surface of one side of the support tube 31 and is fixedly connected to a gear plate 43 with an arc-shaped structure that meshes with the bevel gear of the adapter mechanism 12.

[0050] The sealing mechanism 5 includes a sealing airbag of an annular structure fixedly sleeved on the outer ring of the end cover 2. The end cover 2 is fixedly sleeved with an air pipe connected to the sealing airbag. The air pipe extends to one end of the end cover 2 and is connected to the storage box of the air supply mechanism 9.

[0051] Example 4

[0052] The adjusting mechanism 8 includes a horizontal plate 81 fixed to the outer wall of the supporting tube 63, and the horizontal plate 81 is penetrated by an obliquely arranged extrusion channel 82. The end of the extrusion channel 82 away from the movable plate 61 is provided with a retaining channel 83 penetrating the horizontal plate 81, and the extrusion channel 82 is slidably connected to a pushing shaft 84. One end of the pushing shaft 84 extending out of the extrusion channel 82 is fixedly connected to the pushing screw of the adapter mechanism 12, and the other end of the pushing shaft 84 extending out of the extrusion channel 82 is fixedly connected to a connecting frame 85 fixed to the support plate of the positioning mechanism 10.

[0053] The transfer mechanism 12 includes a pushing screw fixedly connected to the pushing shaft 84 of the adjusting mechanism 8, and the other end of the pushing screw is threadedly sleeved with a rotating tube that is rotatably sleeved with the inner wall of the support tube 31 of the isolation mechanism 3, and the outer ring of the rotating tube is fixedly sleeved with a bevel gear that meshes with the tooth plate 43 of the protective mechanism 4.

[0054] The driving part 7 includes a locking tube fixedly connected to the outside of the adjacent end cover 2. The inner circle of the locking tube is threadedly sleeved with an adjustment rod movably sleeved with the end cover 2. One end of the adjustment rod extends into the end cover 2 and is rotatably connected to the end of the adjacent supporting tube 63. The locking tube is penetrated by a locking hole connected to its interior, and the adjustment rod is provided with a positioning hole for locking.

[0055] Example 5

[0056] The air supply mechanism 9 includes a storage box with an annular structure fixed to the adjacent end cover shell 2, and a piston plate with an annular structure coaxially arranged therewith is slidably connected inside the storage box. The piston plate is fixedly connected to a piston rod that is slidably sleeved with the storage box. One end of the piston rod extends out of the storage box and is fixedly connected to the adjacent supporting tube 63. The storage box is connected to the sealing mechanism 5 through an air pipe.

[0057] The positioning mechanism 10 includes a support plate arranged inside the isolation mechanism 3 and along the length direction of the isolation mechanism 3. The support plate is fixedly connected to the connecting frame 85 of the adjustment mechanism 8. Both ends of the support plate are fixedly connected to positioning rods that are slidably connected to the adjacent end cover 2.

[0058] The extraction mechanism 11 includes a collection cover of an annular structure fixedly sleeved on the inner wall of the end cover 2. A discharge pipe is fixedly connected to the inner ring of the collection cover. The end cover 2 is penetrated by discharge holes distributed in an array along its axis, and the discharge holes are connected to the collection cover.

[0059] A drainage pipe and a main cable fixedly connected to the isolation assembly are installed on one side of the driving part 7. The drainage pipe is connected to the discharge pipe of the extraction mechanism 11, and the main cable is connected to the second cable of the detection assembly 13.

[0060] Working principle:

[0061] When conducting ground stress and microseismic detection, a monitoring hole is drilled in advance at the tunnel surrounding rock detection site. After the drilled detection hole is cleaned, the grouting pipe 1 is put into the detection hole, and the driving part 7 is used to drive the sliding mechanism 6 to start moving, first driving the isolation mechanism 3 to open, first making the positioning mechanism 10 extend to the outside of the end cover 2, the positioning mechanism 10 contacts the inner wall of the detection hole, and performing a positioning operation on the detection device. Thereafter, the detection component 13 is extended from the isolation mechanism 3, and the detection component 13 is extended and contacts the inner wall of the detection hole. At the same time, the sealing mechanism 5 is sealed and contacted with the detection hole from the outside of the end cover 2, and is sealed from the outer rings of the two groups of end cover 2, and from the front and rear ends of the detection hole. Thereafter, the grouting pipe 1 is used for grouting and fixing. After the grouting is completed, the stress of the detection hole and the surrounding rock microwave signal are collected by the sampling unit on the detection component 13.

[0062] When the positioning and isolation mechanism 3 is opened, the adjusting rod located on the inner ring of the locking tube is rotated. Under the action of the thread, the adjusting rod moves toward the inside of the end cover 2, and the adjusting rod pushes the supporting tube 63 to move along the length direction of the grouting tube 1. When the supporting tube 63 moves, it drives the rack 62, the cross plate 81 and the piston rod thereon to move. The rack 62 drives the detection assembly 13 engaged therewith to move. The cross plate 81 causes the driving shaft 84 to move away from the axis of the grouting tube 1 under the action of the extrusion channel 82. The driving shaft 84 simultaneously drives the connecting frame 85 and the adapter mechanism 12 to move.

[0063] When the connecting frame 85 moves, the connecting frame 85 drives the positioning mechanism 10 to move, so that the positioning rod of the positioning mechanism 10 moves toward the outside of the end cover 2, and the positioning rod contacts the inner wall of the detection hole. Since the positioning mechanism 10 is distributed in an array outside the grouting pipe 1, when the positioning rod moves synchronously, the grouting pipe 1 and the end cover 2 are coaxially arranged with the detection hole when they are positioned, which is convenient for subsequent sealing and detection operations.

[0064] The driving shaft 84 drives the driving screw on the adapter mechanism 12 to move toward the inside of the rotating tube. When the driving screw moves, the rotating tube rotates, so that the bevel gear drives the tooth plate 43 meshing with it to move. When the tooth plate 43 moves, the protective tube 41 moves, so that the extension channel 44 on the protective tube 41 rotates to the position of the detection hole 32 on the support tube 31, so that the detection assembly 13 can be extended from the detection hole 32.

[0065] When the driving shaft 84 continues to move from the extrusion channel 82 to the holding channel 83, the detection assembly 13 will continue to move under the drive of the rack 62, and the piston rod will continue to move, so that the medium inside the air supply mechanism 9 is transported to the sealing mechanism 5, causing the sealing mechanism 5 to expand and seal the inner wall of the detection hole;

[0066] The rack 62 drives the gear 28 to rotate, which in turn rotates the driven tube 23, causing the lifting tube 25 to move along its length, thereby extending the lifting tube 25 from the detection hole 32 on the isolation mechanism 3. Depending on the detection requirements, the sampling unit 27 selects either a strain sensor or a microseismic sensor. To facilitate detection, the strain sensor is installed so that it contacts the inner wall of the detection hole, and a certain gap is reserved between the microseismic sensor and the inner wall of the detection hole.

[0067] After sealing, grouting reinforcement is performed. The slurry is injected into the detection hole along the grouting pipe 1. During reinforcement, the water that penetrates from the surrounding rock gaps stays between the two sets of sealing airbags and the protective pipe 41. The deposited water is blocked by the sealing airbags and is pumped out from between the two sets of sealing airbags through the drainage pipe. This prevents the grouting process and the water that penetrates the surrounding rock from entering the detection cavity, affecting the detection of the detection components, and also prevents the detection components from being corroded by the water.

[0068] The present invention realizes the synchronous acquisition operation of ground stress and microwave signals in different directions in underground surrounding rock tunnel projects, and adopts the installation and acquisition operation in the manner of first positioning and then sealing and extracting, so as to ensure that the initial detection position of each stress detection site is always consistent, avoids the occurrence of inaccurate site stress contact due to improper installation operation of local detection sites, reduces the error caused by improper installation operation during stress detection, and improves detection efficiency and accuracy; extracts the moisture deposited and leaked in the grouting reinforcement and subsequent detection process in the detection space, reduces the interference of seepage water on detection accuracy, avoids the corrosion of seepage water on detection components, improves the service life and safety of equipment, and reduces the stability during the installation and fixation process.

[0069] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. An integrated ground stress and microseismic monitoring device, characterized in that: The grouting pipe comprises a grouting pipe, wherein the outer ring of the grouting pipe is fixedly sleeved with an isolation assembly, the interior of the isolation assembly is provided with a sliding mechanism that is slidably sleeved on the outer ring of the grouting pipe, one end of the sliding mechanism is rotatably sleeved with a driving part connected to the isolation assembly, the outer ring of the sliding mechanism is fixedly connected with an adjusting mechanism distributed in an array along the axis of the grouting pipe, the adjusting mechanism is connected with a positioning mechanism that is slidably connected to the isolation assembly, one side of the positioning mechanism is provided with a switching mechanism that is connected to the adjusting mechanism and is used to adjust the state of the isolation assembly, both ends of the positioning mechanism are installed with a withdrawal mechanism connected to the isolation assembly, both ends of the adjusting mechanism are connected with an air supply mechanism for adjusting the sealing state of the isolation assembly, and a detection assembly distributed in an array and engaged with the sliding mechanism is provided between the isolation assembly and the grouting pipe; The sliding mechanism includes two sets of movable plates that are slidably sleeved on the outer ring of the grouting pipe and slide along the length direction of the grouting pipe. The ends of the two sets of movable plates that are away from each other are fixedly connected to a supporting pipe that is coaxially arranged with the grouting pipe. A rack distributed in an array along the axis of the grouting pipe is fixedly connected between the two sets of movable plates, and the rack is engaged with the adjacent detection assembly. The driving part is rotatably connected to the adjacent supporting pipe, and the adjustment mechanism is arranged on the outer side wall of the supporting pipe. The isolation assembly includes two sets of end covers fixedly sleeved on the outer ring of the grouting pipe, an isolation mechanism coaxially arranged with the grouting pipe is fixedly connected between the two sets of end covers, a protective mechanism engaged with the adapter mechanism is rotatably sleeved on the outer ring of the isolation mechanism, and a sealing mechanism connected to the air supply mechanism is fixedly sleeved on the outer ring of the end cover; The isolation mechanism includes a support tube fixedly connected between the two sets of end covers, and the protection mechanism is slidably sleeved on the outer ring of the support tube. The support tube is penetrated by an arc-shaped insertion channel arranged coaxially therewith, and the support tube is penetrated by detection holes distributed along the array. The protection mechanism includes a protection tube rotatably sleeved on the outer ring of the support tube, the protection tube having an extension channel running through it, the inner ring of the protection tube being fixedly connected to a sliding plate with an arc-shaped structure that is slidably connected to the adjacent insertion channel, and the sliding plate extending from the insertion channel to the inner concave surface of one side of the support tube being fixedly connected to a toothed plate with an arc-shaped structure that meshes with the adapter mechanism; The sealing mechanism includes a sealing airbag of an annular structure fixedly sleeved on the outer ring of the end cover; the end cover is fixedly sleeved with an air pipe connected to the sealing airbag; the air pipe extends to one end of the end cover and is connected to the air supply mechanism.

2. The integrated ground stress and microseismic monitoring device according to claim 1, characterized in that: The detection assembly includes a base fixedly connected to the outer wall of the grouting pipe, a T-shaped transition groove is opened at the other end of the base, a driven tube is rotatably sleeved at the opening of the transition groove, the outer ring of the driven tube is fixedly sleeved with a gear meshing with the rack, the outer ring of the end of the gear away from the base is threadedly sleeved with a lifting tube, the outer ring of the lifting tube is slidably sleeved with a guide tube that slides along its length and is fixed to the isolation assembly, the inner ring of the end of the lifting tube away from the base is fixedly sleeved with a sampling unit, the bottom of the sampling unit is connected to a cable 1 with a spiral structure located inside the driven tube, the cable 1 extends to one end of the transition groove and is connected to a cable 2 fixed to the base, and the sampling unit adopts any one of a strain sensor and a microseismic sensor.

3. The integrated ground stress and microseismic monitoring device according to claim 1, characterized in that: The adjustment mechanism includes a horizontal plate fixedly connected to the outer side wall of the supporting tube, the horizontal plate is penetrated by an obliquely arranged extrusion channel, and a retaining channel penetrating the horizontal plate is provided at one end of the extrusion channel away from the movable plate. The extrusion channel is slidably connected to a pushing shaft, one end of the pushing shaft extending out of the extrusion channel is fixedly connected to the transfer mechanism, and the other end of the pushing shaft extending out of the extrusion channel is fixedly connected to a connecting frame fixed to the positioning mechanism.

4. The integrated ground stress and microseismic monitoring device according to claim 1, characterized in that: The transfer mechanism includes a pushing screw fixedly connected to the adjusting mechanism, the other end of the pushing screw is threadedly sleeved with a rotating tube rotatably sleeved with the isolation mechanism, and the outer ring of the rotating tube is fixedly sleeved with a bevel gear meshing with the protection mechanism.

5. The integrated ground stress and microseismic monitoring device according to claim 1, characterized in that: The driving part includes a locking tube fixedly connected to the outside of the adjacent end cover, and the inner circle of the locking tube is threadedly sleeved with an adjustment rod movably sleeved with the end cover. One end of the adjustment rod extends into the end cover and is rotatably connected to the end of the adjacent supporting tube. The locking tube is penetrated by a locking hole connected to its interior, and the adjustment rod is provided with a positioning hole for locking.

6. The integrated ground stress and microseismic monitoring device according to claim 1, characterized in that: The air supply mechanism includes a storage box with an annular structure fixed to an adjacent end cover shell, a piston plate with an annular structure coaxially arranged therein is slidably connected inside the storage box, the piston plate is fixedly connected to a piston rod slidably sleeved with the storage box, one end of the piston rod extends out of the storage box and is fixedly connected to an adjacent supporting tube, and the storage box is connected to the sealing mechanism.

7. The integrated ground stress and microseismic monitoring device according to claim 1, characterized in that: The positioning mechanism includes a supporting plate arranged inside the isolation mechanism and along the length direction of the isolation mechanism. The supporting plate is fixedly connected to the adjustment mechanism. Both ends of the supporting plate are fixedly connected to positioning rods that are slidably connected to adjacent end covers.

8. The integrated ground stress and microseismic monitoring device according to claim 1, characterized in that: The extraction mechanism includes a collection cover with an annular structure fixedly sleeved on the inner wall of the end cover, the inner ring of the collection cover is fixedly connected to a discharge pipe, and the end cover is penetrated by discharge holes distributed in an array along its axis, and the discharge holes are connected to the collection cover.

9. The integrated ground stress and microseismic monitoring device according to claim 1, characterized in that: A drainage pipe and a main cable fixedly connected to the isolation component are installed on one side of the driving part. The drainage pipe is connected to the extraction mechanism, and the main cable is connected to the detection component.

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