Quality evaluation device for surrounding rock support of broken zone of long tunnel and use method of quality evaluation device

Abstract

The invention relates to the technical field of tunnel construction, in particular to a quality evaluation device for surrounding rock support of a broken zone of a long tunnel and a using method thereof.The quality evaluation device comprises a shell, connecting blocks are fixedly connected to the left side and the right side of the bottom of the shell, and monitoring assemblies are arranged in the shell and on the back face of the shell; a mounting assembly is arranged below the shell, a supporting base is arranged at the bottom of the mounting assembly, the monitoring assembly comprises a first rotating shaft arranged on the left side of the back face of the shell, the front end of the first rotating shaft is rotationally connected with the back face of the shell, and a first rotating wheel is fixedly connected to the end, away from the shell, of the first rotating shaft; a second rotating shaft penetrates through the left side of the back face of the shell, a second rotating wheel is fixedly connected to the rear end of the second rotating shaft, the horizontal position of the second rotating wheel is higher than that of the first rotating wheel, displacement of the anchor rod is detected in real time, the supporting condition of the anchor rod is analyzed, and some uncontrollable events are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, and in particular to a quality assessment device for surrounding rock support in a broken zone of a long tunnel and a use method thereof. Background Art

[0002] During the tunnel construction process, the length of each longitudinal excavation needs to be determined in advance according to the specific conditions of the rock mass, that is, the entire tunnel is divided into multiple tunnel passages for sequential excavation. During construction, the first tunnel passage is first excavated according to the excavation length, and then support is implemented in this first tunnel passage. After completion, the second tunnel passage can be excavated longitudinally from the end of the first tunnel passage, and this cycle is continued until the support construction of the last tunnel passage is completed, and the multiple tunnel passages form a complete tunnel; anchor support is one of the current means of tunnel surrounding rock support. The application of anchors greatly reduces the deformation and damage of the tunnel surrounding rock, but the tunnel surrounding rock will still deform. However, it is currently impossible to realize automatic monitoring of the damage and deformation of the rock strata in the anchoring area to evaluate the quality of support. Manual field monitoring is usually used, resulting in a large number of manual inspections for monitoring and low work efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a quality assessment device for surrounding rock support in a broken zone of a long tunnel and a method for using the same, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A quality assessment device for surrounding rock support in a broken zone of a long tunnel comprises a housing, connecting blocks are fixedly connected to the left and right sides of the bottom of the housing, a monitoring component is arranged inside the housing and on the back of the housing, a mounting component is arranged below the housing, and a supporting base is arranged at the bottom of the mounting component;

[0006] The monitoring component includes a first rotating shaft arranged on the left side of the back side of the shell, the front end of the first rotating shaft is rotatably connected to the back side of the shell, the first rotating shaft is fixedly connected to the first rotating wheel at one end away from the shell, the second rotating shaft passes through the left side of the back side of the shell, the rear end of the second rotating shaft is fixedly connected to the second rotating wheel, the horizontal position of the second rotating wheel is higher than the horizontal position of the first rotating wheel, a pull rope is wound around the surfaces of the first rotating wheel and the second rotating wheel, the bottom end of the pull rope is fixedly connected to a counterweight block, the front end of the second rotating shaft is fixedly connected to a gear, the inner cavity of the shell is provided with a fixed seat, the back side of the fixed seat is fixedly connected to the inner wall of the back side of the shell, the right side of the fixed seat is rotatably connected to an elastic steel sheet, the end of the elastic steel sheet away from the fixed seat contacts the surface of the gear, the left ends of the upper and lower sides of the elastic steel sheet are fixedly connected to springs, the ends of the two springs away from the elastic steel sheets are respectively fixedly connected to the upper and lower ends of the right side of the fixed seat, and the processor is fixedly connected to the left side of the bottom of the inner cavity of the shell.

[0007] As a preferred solution of the present invention, a snap-in groove is provided at the bottom of the opposite sides of the two connecting blocks, and the installation assembly includes a support base arranged under the outer shell, and the bottom ends of the two connecting blocks extend into the interior of the support base, and a hand wheel passes through the front side of the support base, and the surface of the hand wheel is rotatably connected to the front side of the support base.

[0008] As a preferred solution of the present invention, one end of the handwheel extending into the interior of the support seat is fixedly connected to an adjusting screw, the end of the adjusting screw away from the handwheel is rotatably connected to the inner wall of the support seat, the surface of the adjusting screw is threadedly connected to a moving block, and the left and right sides of the moving block are fixedly connected to bending rods.

[0009] As a preferred solution of the present invention, the two bending rods are fixedly connected to an extrusion plate at one end away from the moving block, the two extrusion plates are inclined, trapezoidal blocks are symmetrically arranged in the inner cavity of the support seat, the surfaces of the inclined sides of the two trapezoidal blocks are respectively slidably connected to the surfaces of the two extrusion plates, and the two trapezoidal blocks are fixedly connected to a clamping rod on the opposite sides.

[0010] As a preferred solution of the present invention, the surfaces of the two clamping rods are sleeved with fixing plates, the bottoms of the two fixing plates are fixedly connected to the bottom of the inner cavity of the support seat, and the outer sides of the two clamping rods close to the trapezoidal blocks are sleeved with return springs, the opposite ends of the two return springs are respectively fixedly connected to the surfaces of the two trapezoidal blocks, the opposite ends of the two return springs are respectively fixedly connected to the surfaces of the two fixing plates, and the ends of the two clamping rods away from the trapezoidal blocks extend to the inside of the two clamping grooves respectively.

[0011] As a preferred solution of the present invention, the support base includes a support rod, the top end of the support rod is fixedly connected to the middle part of the bottom of the support seat, the bottom end of the support rod is fixedly connected to a bottom plate, the four corners of the bottom plate are penetrated by ground nails, and the top of the ground nail is penetrated by a rotating handle.

[0012] As a preferred solution of the present invention, the inner cavity of the ground nail is provided with a rotating screw rod, the top end of the rotating screw rod is fixedly connected to the bottom end of the rotating handle, the bottom end of the rotating screw rod is rotatably connected to the bottom of the inner cavity of the ground nail, the upper and lower sides of the surface of the rotating screw rod are threadedly connected with threaded blocks, one side of the two threaded blocks is fixedly connected to a limiting slider, and the upper and lower ends of one side of the inner cavity of the ground nail are provided with limiting grooves, and the ends of the two limiting sliders away from the threaded blocks respectively extend to the interior of the two limiting grooves and are slidably connected to the inner walls of the limiting grooves.

[0013] As a preferred solution of the present invention, the two threaded blocks are fixedly connected to an L-shaped push rod on one side away from the limiting sliding block, and reinforcing ground nails are arranged above the two L-shaped push rods. The two reinforcing ground nails are arranged at an angle, and the bottom ends of the two reinforcing ground nails are respectively slidably connected to the top ends of the two L-shaped push rods, and openings are provided at both ends of the ground nails away from the limiting sliding groove, and the ends of the two reinforcing ground nails away from the L-shaped push rods extend to the inside of the openings.

[0014] A method for using a quality assessment device for surrounding rock support in a broken zone of a long tunnel, the specific steps are as follows:

[0015] Step 1: When the handle is turned to drive the screw to rotate, the threaded block and the L-shaped push rod move upward, pushing the reinforced ground nail through the opening to the outside, so that the ground nail is fixed more firmly after extending underground;

[0016] Step 2: The hand wheel is used to drive the adjusting screw to rotate, and the moving block on the surface of the adjusting screw drives the two bending rods to move forward, pushing the two trapezoidal blocks together with the clamping rods to move to both sides, so that the two clamping rods are clamped in the inside of the two clamping grooves, thereby fixing the housing;

[0017] Step three: Connect the end of the pull rope away from the counterweight to the anchor rod. When the anchor rod is displaced, the counterweight suspended by the pull rope moves downward under the action of its own gravity. At this time, the pull rope drives the first rotating wheel and the second rotating wheel to move together. The second rotating wheel drives the gear to rotate using the second rotating shaft. The gear drives the elastic steel sheet to rotate and vibrate. The acceleration sensor chip on the surface of the elastic steel sheet will detect the movement of the acceleration sensor chip and record the movement data in real time to analyze the deformation of the surrounding rock.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, the ground nails are extended underground, and the threaded rod is rotated so that the threaded block drives the L-shaped push rod to push the reinforced ground nails outward, so that the ground nails are more secure and the stability of the shell is enhanced to achieve more accurate detection data.

[0020] 2. In the present invention, the counterweight block utilizes its own gravity. After the anchor rod is displaced due to the deformation of the surrounding rock, it can drive the pull rope to move downward, and the driving gear can move the elastic steel sheet. The acceleration sensor chip can record the movement of the elastic steel sheet in real time, so as to analyze the deformation of the tunnel and evaluate the quality of the support. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the back structure of the housing of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the housing of the present invention;

[0024] Figure 4 It is a schematic diagram of a top view of a cross-sectional structure of an installation assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the ground nail of the present invention.

[0026] In the figure: 1, housing; 2, connecting block; 3, monitoring component; 301, first rotating shaft; 302, first rotating wheel; 303, second rotating shaft; 304, second rotating wheel; 305, pull rope; 306, counterweight; 307, gear; 308, fixed seat; 309, elastic steel sheet; 310, spring; 311, acceleration sensor chip; 312, processor; 4, mounting component; 401, support seat; 402, hand wheel; 403, adjusting screw rod; 4 04, moving block; 405, bending rod; 406, extrusion plate; 407, trapezoidal block; 408, clamping rod; 409, fixing plate; 410, reset spring; 5, clamping groove; 6, supporting base; 601, supporting rod; 602, bottom plate; 603, ground nail; 604, turning handle; 605, turning screw rod; 606, threaded block; 607, limiting slider; 608, limiting slide groove; 609, L-shaped push rod; 610, reinforcing ground nail; 611, opening hole. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] For examples, see Figure 1 , Figure 2 , Figure 3 , the present invention provides a technical solution:

[0032] A quality assessment device for surrounding rock support in a broken zone of a long tunnel comprises a shell 1, connecting blocks 2 are fixedly connected to the left and right sides of the bottom of the shell 1, a monitoring component 3 is arranged inside the shell 1 and on the back of the shell 1, a mounting component 4 is arranged below the shell 1, a supporting base 6 is arranged at the bottom of the mounting component 4, the monitoring component 3 comprises a first rotating shaft 301 arranged on the left side of the back of the shell 1, the front end of the first rotating shaft 301 is rotatably connected to the back of the shell 1, a first rotating wheel 302 is fixedly connected to the end of the first rotating shaft 301 away from the shell 1, a second rotating shaft 303 passes through the left side of the back of the shell 1, a second rotating wheel 304 is fixedly connected to the rear end of the second rotating shaft 303, and the horizontal position of the second rotating wheel 304 is higher than the water level of the first rotating wheel 302. In the horizontal position, a pull rope 305 is wound around the surface of the first rotating wheel 302 and the second rotating wheel 304, and a counterweight 306 is fixedly connected to the bottom end of the pull rope 305, and a gear 307 is fixedly connected to the front end of the second rotating shaft 303. A fixed seat 308 is provided in the inner cavity of the shell 1, and the back of the fixed seat 308 is fixedly connected to the back inner wall of the shell 1, and an elastic steel sheet 309 is rotatably connected to the right side of the fixed seat 308, and one end of the elastic steel sheet 309 away from the fixed seat 308 contacts the surface of the gear 307, and the left ends of the upper and lower sides of the elastic steel sheet 309 are fixedly connected with springs 310, and one end of the two springs 310 away from the elastic steel sheet 309 is respectively fixedly connected to the upper and lower ends of the right side of the fixed seat 308, and a processor 312 is fixedly connected to the left side of the bottom of the inner cavity of the shell 1.

[0033] like Figure 1 , Figure 4As shown, a snap-in groove 5 is provided at the bottom of the opposite side of the two connecting blocks 2, and the mounting assembly 4 includes a support seat 401 arranged below the housing 1, and the bottom ends of the two connecting blocks 2 extend to the interior of the support seat 401, and a hand wheel 402 runs through the front of the support seat 401, and the surface of the hand wheel 402 is rotatably connected to the front of the support seat 401, and one end of the hand wheel 402 extending to the interior of the support seat 401 is fixedly connected to an adjusting screw rod 403, and the end of the adjusting screw rod 403 away from the hand wheel 402 is rotatably connected to the inner wall of the support seat 401, and the surface of the adjusting screw rod 403 is threadedly connected to a moving block 404, and the left and right sides of the moving block 404 are fixedly connected to bending rods 405, and the ends of the two bending rods 405 away from the moving block 404 are fixedly connected to extrusion plates 406, and the two extrusion plates 406 are inclined. The support seat 401 inner cavity is symmetrically provided with trapezoidal blocks 407, the surfaces of the inclined sides of the two trapezoidal blocks 407 are respectively slidably connected to the surfaces of the two extrusion plates 406, the opposite sides of the two trapezoidal blocks 407 are fixedly connected with clamping rods 408, the surfaces of the two clamping rods 408 are sleeved with fixing plates 409, the bottoms of the two fixing plates 409 are fixedly connected to the bottom of the inner cavity of the support seat 401, the outside of the two clamping rods 408 are sleeved with return springs 410 on one side close to the trapezoidal blocks 407, the opposite ends of the two return springs 410 are respectively fixedly connected to the surfaces of the two trapezoidal blocks 407, the opposite ends of the two return springs 410 are respectively fixedly connected to the surfaces of the two fixing plates 409, and the ends of the two clamping rods 408 away from the trapezoidal blocks 407 extend to the inside of the two clamping grooves 5 respectively.

[0034] like Figure 1 , Figure 5As shown, the support base 6 includes a support rod 601, the top of the support rod 601 is fixedly connected to the middle of the bottom of the support seat 401, the bottom end of the support rod 601 is fixedly connected to the bottom plate 602, the four corners of the bottom plate 602 are penetrated by ground nails 603, the top of the ground nail 603 is penetrated by a rotating handle 604, the inner cavity of the ground nail 603 is provided with a rotating screw rod 605, the top of the rotating screw rod 605 is fixedly connected to the bottom end of the rotating handle 604, the bottom end of the rotating screw rod 605 is rotatably connected to the bottom of the inner cavity of the ground nail 603, the upper and lower sides of the surface of the rotating screw rod 605 are threadedly connected with threaded blocks 606, one side of the two threaded blocks 606 is fixedly connected to the limiting slider 607, the upper side of the inner cavity of the ground nail 603 Limiting grooves 608 are provided at both ends of the lower part, and the ends of the two limiting sliding blocks 607 away from the threaded block 606 respectively extend to the inside of the two limiting sliding grooves 608 and are slidably connected to the inner walls of the limiting sliding grooves 608. The two threaded blocks 606 are fixedly connected to the side away from the limiting sliding block 607 with an L-shaped push rod 609, and reinforced ground nails 610 are arranged above the two L-shaped push rods 609. The two reinforced ground nails 610 are inclined, and the bottom ends of the two reinforced ground nails 610 are slidably connected to the top ends of the two L-shaped push rods 609 respectively. Openings 611 are provided at both ends of the ground nail 603 away from the limiting groove 608, and the ends of the two reinforced ground nails 610 away from the L-shaped push rod 609 extend to the inside of the opening 611.

[0035] Based on the above structure and the connection relationship of the above structure, when the handle 604 is turned to drive the rotating screw 605 to rotate, the threaded block 606 and the L-shaped push rod 609 move upward, pushing the reinforced ground nail 610 to move outward through the opening 611, so that the ground nail 603 is fixed more firmly after extending underground.

[0036] Furthermore, the adjusting screw 403 is driven to rotate by the hand wheel 402, and the moving block 404 on the surface of the adjusting screw 403 drives the two bending rods 405 to move forward, pushing the two trapezoidal blocks 407 together with the clamping rods 408 to move to both sides, so that the two clamping rods 408 are clamped in the inside of the two clamping grooves 5, thereby completing the fixation of the shell 1.

[0037] Furthermore, the end of the pull rope 305 away from the counterweight 306 is connected to the anchor rod. When the anchor rod is displaced, the counterweight 306 suspended by the pull rope 305 moves downward under the action of its own gravity. At this time, the pull rope 305 drives the first rotating wheel 302 and the second rotating wheel 304 to move together. The second rotating wheel 304 drives the gear 307 to rotate using the second rotating shaft 303. The gear 307 drives the elastic steel sheet 309 to rotate and vibrate. The acceleration sensor chip 311 on the surface of the elastic steel sheet 309 will detect the movement of the acceleration sensor chip 311 and record the movement data in real time to analyze the deformation of the surrounding rock.

[0038] The working process of the present invention is as follows: when in use, the support rod 601 is placed in a fixed position, the ground nail 603 is pushed deep into the ground, and then the rotating screw 605 is rotated by turning the handle 604. The two threaded blocks 606 on the surface of the rotating screw 605 drive the L-shaped push rod 609 to move upward together, and the reinforcement ground nail 610 is pushed to extend to the outside of the ground nail 603 through the opening 611, so that the ground nail 603 is more secure, and the stability of the housing 1 is enhanced to achieve more accurate detection data;

[0039] The housing 1 is placed on the top of the support base 401, and the connecting blocks 2 on both sides extend to the inside of the support base 401. The adjusting screw rod 403 is rotated by the hand wheel 402. The moving block 404 on the surface of the adjusting screw rod 403 pushes the bending rod 405 and the extrusion plate 406 to move forward together, and pushes the two trapezoidal blocks 407 together with the clamping rod 408 to move to both sides, so that the two clamping rods 408 are clamped in the inside of the two clamping grooves 5, and the housing 1 is fixed, so that the housing 1 and the support base 6 can be carried;

[0040] The top of the pull rope 305 is fixed to the anchor rod. When the surrounding rock of the tunnel is deformed, the anchor rod will move together. Under the gravity of the counterweight block 306, the pull rope 305 drives the first rotating wheel 302 and the second rotating wheel 304 to rotate together. The second rotating wheel 304 drives the gear 307 to move using the second rotating shaft 303. While the gear 307 rotates, the teeth on the surface drive the elastic steel sheet 309 to rotate. The acceleration sensor chip 311 can record the movement of the elastic steel sheet 309 in real time, and the processor 312 analyzes the data to quickly detect the deformation of the tunnel and the support condition of the anchor rod, avoiding the uncontrollable risks that may occur in manual on-site detection, and can quickly and conveniently detect the deformation of the tunnel and the quality of tunnel support.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quality assessment device for surrounding rock support in a broken zone of a long tunnel, comprising a housing (1), characterized in that: The left and right sides of the bottom of the housing (1) are fixedly connected with connection blocks (2); the interior of the housing (1) and the back of the housing (1) are provided with a monitoring component (3); a mounting component (4) is provided below the housing (1); and a supporting base (6) is provided at the bottom of the mounting component (4); The monitoring component (3) comprises a first rotating shaft (301) arranged on the left side of the back side of the housing (1); the front end of the first rotating shaft (301) is rotatably connected to the back side of the housing (1); the end of the first rotating shaft (301) away from the housing (1) is fixedly connected to a first rotating wheel (302); a second rotating shaft (303) passes through the left side of the back side of the housing (1); the rear end of the second rotating shaft (303) is fixedly connected to a second rotating wheel (304); the horizontal position of the second rotating wheel (304) is higher than the horizontal position of the first rotating wheel (302); a pull rope (305) is wound around the surface of the first rotating wheel (302) and the second rotating wheel (304); the bottom end of the pull rope (305) is fixedly connected to a counterweight block (306) ), the front end of the second rotating shaft (303) is fixedly connected to a gear (307), the inner cavity of the shell (1) is provided with a fixed seat (308), the back side of the fixed seat (308) is fixedly connected to the back inner wall of the shell (1), the right side of the fixed seat (308) is rotatably connected to an elastic steel sheet (309), one end of the elastic steel sheet (309) away from the fixed seat (308) is in contact with the surface of the gear (307), the left ends of the upper and lower sides of the elastic steel sheet (309) are fixedly connected to springs (310), the ends of the two springs (310) away from the elastic steel sheet (309) are respectively fixedly connected to the upper and lower ends of the right side of the fixed seat (308), and the left side of the bottom of the inner cavity of the shell (1) is fixedly connected to a processor (312).

2. The quality assessment device for surrounding rock support in a broken zone of a long tunnel according to claim 1, characterized in that: The bottoms of the two connecting blocks (2) on opposite sides are each provided with a snap-in groove (5); the mounting assembly (4) comprises a support seat (401) arranged below the housing (1); the bottom ends of the two connecting blocks (2) extend into the interior of the support seat (401); a hand wheel (402) passes through the front of the support seat (401); and the surface of the hand wheel (402) is rotatably connected to the front of the support seat (401).

3. The quality assessment device for surrounding rock support in a broken zone of a long tunnel according to claim 2, characterized in that: One end of the hand wheel (402) extending to the inside of the support seat (401) is fixedly connected to an adjusting screw rod (403), and one end of the adjusting screw rod (403) away from the hand wheel (402) is rotatably connected to the inner wall of the support seat (401), and a moving block (404) is threadedly connected to the surface of the adjusting screw rod (403), and the left and right sides of the moving block (404) are fixedly connected to bending rods (405).

4. The quality assessment device for surrounding rock support in a broken zone of a long tunnel according to claim 3 is characterized by: The ends of the two bending rods (405) away from the moving block (404) are fixedly connected to the extrusion plates (406), and the two extrusion plates (406) are inclined. The inner cavity of the support seat (401) is symmetrically provided with trapezoidal blocks (407). The surfaces of the inclined sides of the two trapezoidal blocks (407) are respectively slidably connected to the surfaces of the two extrusion plates (406), and the opposite sides of the two trapezoidal blocks (407) are fixedly connected to the clamping rods (408).

5. The quality assessment device for surrounding rock support in a broken zone of a long tunnel according to claim 4, characterized in that: The surfaces of the two clamping rods (408) are sleeved with fixing plates (409), the bottoms of the two fixing plates (409) are fixedly connected to the bottom of the inner cavity of the support seat (401), and the outer side of the two clamping rods (408) close to the trapezoidal block (407) is sleeved with a return spring (410), the opposite ends of the two return springs (410) are respectively fixedly connected to the surfaces of the two trapezoidal blocks (407), and the opposite ends of the two return springs (410) are respectively fixedly connected to the surfaces of the two fixing plates (409), and the ends of the two clamping rods (408) away from the trapezoidal block (407) extend to the inside of the two clamping grooves (5).

6. The quality assessment device for surrounding rock support in a broken zone of a long tunnel according to claim 1, characterized in that: The support base (6) comprises a support rod (601), the top end of the support rod (601) is fixedly connected to the middle of the bottom of the support seat (401), the bottom end of the support rod (601) is fixedly connected to a bottom plate (602), the four corners of the bottom plate (602) are penetrated by ground nails (603), and the top of the ground nail (603) is penetrated by a rotating handle (604).

7. The quality assessment device for surrounding rock support in a broken zone of a long tunnel according to claim 6, characterized in that: The inner cavity of the ground nail (603) is provided with a rotating screw rod (605), the top end of the rotating screw rod (605) is fixedly connected to the bottom end of the rotating handle (604), and the bottom end of the rotating screw rod (605) is rotatably connected to the bottom of the inner cavity of the ground nail (603). The upper and lower sides of the surface of the rotating screw rod (605) are threadedly connected with thread blocks (606), and one side of the two thread blocks (606) is fixedly connected to a limiting slider (607). The upper and lower ends of one side of the inner cavity of the ground nail (603) are provided with limiting sliding grooves (608), and the ends of the two limiting sliding grooves (607) away from the thread blocks (606) extend to the inside of the two limiting sliding grooves (608) respectively and are slidably connected to the inner walls of the limiting sliding grooves (608).

8. The quality assessment device for surrounding rock support in a broken zone of a long tunnel according to claim 7, characterized in that: The two threaded blocks (606) are fixedly connected to an L-shaped push rod (609) on one side away from the limiting sliding block (607), and a reinforcing ground nail (610) is arranged above the two L-shaped push rods (609). The two reinforcing ground nails (610) are arranged obliquely, and the bottom ends of the two reinforcing ground nails (610) are respectively slidably connected to the top ends of the two L-shaped push rods (609). Openings (611) are provided at both ends of the ground nail (603) on the side away from the limiting sliding groove (608), and the ends of the two reinforcing ground nails (610) away from the L-shaped push rod (609) extend to the inside of the opening (611).

9. A method for using a quality assessment device for surrounding rock support in a broken zone of a long tunnel, implemented according to any one of claims 1 to 8, characterized in that: The steps are as follows: Step 1: When the rotating screw rod (605) is driven to rotate by turning the handle (604), the threaded block (606) and the L-shaped push rod (609) move upward, pushing the reinforcement ground nail (610) to move outward through the opening (611), so that the ground nail (603) is fixed more firmly after being extended underground; Step 2: The adjusting screw rod (403) is driven to rotate by the hand wheel (402), and the moving block (404) on the surface of the adjusting screw rod (403) drives the two bending rods (405) to move forward, pushing the two trapezoidal blocks (407) together with the clamping rod (408) to move to both sides, so that the two clamping rods (408) are clamped in the inside of the two clamping grooves (5), thereby completing the fixing of the housing (1); Step three: connect the end of the pull rope (305) away from the counterweight (306) to the anchor rod. When the anchor rod is displaced, the counterweight (306) suspended by the pull rope (305) moves downward under the action of its own gravity. At this time, the pull rope (305) drives the first rotating wheel (302) and the second rotating wheel (304) to move together. The second rotating wheel (304) drives the gear (307) to rotate using the second rotating shaft (303). The gear (307) drives the elastic steel sheet (309) to rotate and vibrate. The acceleration sensor chip (311) on the surface of the elastic steel sheet (309) detects the movement of the acceleration sensor chip (311) and records the movement data in real time to analyze the deformation of the surrounding rock.

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