Auxiliary installation device for fracture zone tunnel surrounding rock mechanical response test sensor

Abstract

The utility model relates to the technical field of fracture zone tunnel surrounding rock mechanical response testing, and discloses a fracture zone tunnel surrounding rock mechanical response testing sensor auxiliary installation device which comprises a main rod, a plurality of installation shells are fixedly installed on the surface of the main rod, and extension supports are attached to the interiors of the installation shells. And a connecting inclined rod is fixedly mounted on the outer side of the extension bracket. According to the auxiliary mounting device for the fracture zone tunnel surrounding rock mechanical response test sensor, a lower pressing plate fixedly connected with a connecting column at the bottom of a connecting inclined rod is used for pressing downwards, a rubber pad is extruded through the lower pressing plate, then the requirement for depth-lengthened drilling can be met after the depth is fixed, the drilling process is stable, and the drilling efficiency is improved. In the whole operation process, drilling-down errors can be avoided to the maximum extent, feedback can be formed after a designated position is reached in the drilling-down process, the depth can be continuously increased within a small range, and the numerical influence caused by the fact that the ground surface of a fault fracture zone is uneven is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to broken zone tunnel surrounding rock mechanics response test technical field, concretely is a kind of broken zone tunnel surrounding rock mechanics response test sensor auxiliary installation device. BACKGROUND

[0002] Under prior art, in the process of testing, the test material is layered rammed, fault fracture zone is partitioned and filled, and a certain load is laid on the top of the tunnel model to simulate the self-weight of the overlying rock mass of the tunnel, the central axis position of the tunnel is set as the monitoring section, and the stress and deformation data of the surrounding rock of the tunnel are measured in real time by embedding micro soil pressure cells and displacement meters in the model test.

[0003] However, the inventor found that the following problems still exist in the actual operation process: in the process of embedding micro soil pressure cells and displacement meter sensors, a pit needs to be dug in the laid fault fracture zone, and then the micro soil pressure cells and displacement meter sensors are buried in the pit. Since the entire experiment is simulated by means of micro-experiment, the pit is not assisted by suitable tools when digging, and the pit is not in a vertical state with the aid of some non-exclusive digging tools, which causes errors between the depth position of the pit and the actual required embedding depth position, affecting the monitoring data.

[0004] Therefore, the utility model provides a broken zone tunnel surrounding rock mechanics response test sensor auxiliary installation device. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a broken zone tunnel surrounding rock mechanics response test sensor auxiliary installation device, which has the advantages of minimizing the downhole depth error to avoid abnormal monitoring data results, and solves the problems raised in the background art.

[0006] The utility model provides the following technical scheme: a broken zone tunnel surrounding rock mechanics response test sensor auxiliary installation device, comprising a main rod, a plurality of installation shells are fixedly installed on the surface of the main rod, an extension support is attached to the inside of the installation shell, a connecting inclined rod is fixedly installed on the outside of the extension support, a connecting column is fixedly connected to the bottom of the connecting inclined rod, a pressing plate is fixedly connected to the bottom of the connecting column, a rubber pad is attached to the bottom of the pressing plate, and a ground contact support shell is attached to the surface of the rubber pad.

[0007] Preferably, the installation shell is provided with a screw groove one, the screw groove one is internally screwed with an installation bolt, the surface of the installation bolt is screwed with a fastening nut, and the top of the fastening nut is attached to the bottom of the installation shell.

[0008] Preferably, the ground contact support shell has sliding grooves on both sides, and a limit block is slidably connected inside the sliding groove. A pressure plate is fixedly connected to the inner side of the limit block.

[0009] Preferably, a rotating disk is fixedly connected to the top of the main rod, and a level is fixedly installed on the top of the rotating disk.

[0010] Preferably, a screw hole is provided at the bottom of the main rod, and a connecting screw is threaded into the inside of the screw hole, and a drill bit is fixedly connected to the bottom of the connecting screw.

[0011] Preferably, the extension bracket has a through-hole threaded groove 2, and an installation bolt is fitted inside the threaded groove 2.

[0012] Preferably, the length of the rubber pad is the same as the length of the inner wall of the ground contact support shell.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This sensor-assisted installation device for testing the mechanical response of surrounding rock in fractured tunnels uses a rotating disc to control rotation during the downward drilling process. During rotation, the drill bit at the bottom of the connecting screw, connected by threads at the bottom of the main rod, breaks through the fault fracture zone. The drilling level is constantly monitored using a level gauge on the top of the rotating disc. Once the set height is reached, the two sets of ground contact support shells contact the surface of the fault fracture zone, stopping the drilling. A pressure plate, fixed to the bottom of the connecting column of the connecting rod, presses down, squeezing the rubber pad. This allows for further drilling depths after reaching a fixed depth, and the drilling process is stable. The entire operation minimizes drilling errors and provides feedback upon reaching the designated position, allowing for small-scale reinforcement of the drilling depth and reducing the numerical impact caused by the uneven surface of the fault fracture zone. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0016] Figure 2 This utility model Figure 1 A schematic diagram of the structure viewed from below;

[0017] Figure 3 This utility model Figure 1 A partial structural diagram;

[0018] Figure 4 This is a schematic diagram of the drill bit structure of this utility model.

[0019] In the picture:

[0020] 1, main rod; 101, rotating disc; 102, level; 103, drill bit; 104, connecting screw rod;

[0021] 2, mounting shell; 201, mounting bolt; 202, fastening nut;

[0022] 3, extension support; 301, connecting inclined rod; 302, connecting column; 303, limiting block; 304, ground contact support shell; 305, rubber pad; 306, pressing plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-4 A broken zone surrounding rock mechanics response test sensor auxiliary installation device, including main rod 1, the surface of main rod 1 is fixedly installed with a plurality of mounting shells 2, the inside of mounting shell 2 is attached with extension support 3, the outer side of extension support 3 is fixedly installed with connecting inclined rod 301, the bottom of connecting inclined rod 301 is fixedly connected with connecting column 302, the bottom of connecting column 302 is fixedly connected with pressing plate 306, the bottom of pressing plate 306 is attached with rubber pad 305, the surface of rubber pad 305 is attached with ground contact support shell 304, the rotation is controlled by rotating disc 101 in the process of being driven into, the drill bit 103 at the bottom of connecting screw rod 104 fixedly connected with the bottom of main rod 1 is formed in the process of rotation Break the fault fracture zone operation, and the horizontal height of drilling is observed at all times by level 102 at the top of rotating disc 101, after drilling to the set height, the ground contact support shell 304 and the surface of fault fracture zone form contact and stop drilling, the pressing plate 306 is pressed by pressing plate 306, and the lengthening depth drilling requirement can be carried out after the fixed depth, and the drilling process is stable, the drilling error can be avoided to the greatest extent in the whole operation process, and feedback can be formed after reaching the specified position in the drilling process, and the depth can also be continuously strengthened in a small range, and the numerical influence caused by the uneven surface of fault fracture zone is reduced.

[0025] The installation shell 2 is provided with a screw groove one, the inside of the screw groove one is threadedly connected with an installation bolt 201, the surface of the installation bolt 201 is threadedly connected with a fastening nut 202, the top of the fastening nut 202 is attached to the bottom of the installation shell 2, two groups of extension supports 3 are inserted into the inside of the installation shell 2 in alignment, the screw groove one and the screw groove two are aligned, the extension supports 3 are limited by the installation bolt 201 and the fastening nut 202, and then the installation between the two is completed, and vice versa, which can be disassembled for convenient carrying.

[0026] The ground contact support shell 304 is provided with a sliding groove on each side, and a limiting block 303 is slidably connected in the sliding groove.

[0027] The top of the main rod 1 is fixedly connected with a rotating disc 101, and the top of the rotating disc 101 is fixedly connected with a level 102, and the level 102 can be used to observe the horizontal state in real time.

[0028] The bottom of the main rod 1 is provided with a screw hole, and the inside of the screw hole is threadedly connected with a connecting screw 104, and the bottom of the connecting screw 104 is fixedly connected with a drill bit 103, and the connecting screw 104 can be used to realize quick disassembly and replacement when the drill bit 103 is damaged.

[0029] The extension support 3 is provided with a screw groove two, and the inside of the screw groove two is attached to the installation bolt 201.

[0030] The length of the rubber pad 305 is consistent with the length of the inner wall of the ground contact support shell 304.

[0031] The working principle is that two groups of extension supports 3 are inserted into the inside of the installation shell 2 in alignment, the screw groove one and the screw groove two are aligned, the extension supports 3 are limited by the installation bolt 201 and the fastening nut 202, the rotation is controlled by the rotating disc 101 during the downward penetration process, the drill bit 103 at the bottom of the connecting screw 104 threadedly connected to the bottom of the main rod 1 is used to form a fault fracture zone operation during the rotation, and the level 102 at the top of the rotating disc 101 is used to observe the drilling level at all times, the two groups of ground contact support shells 304 are in contact with the surface of the fault fracture zone and stop drilling after drilling to the set height, the lower pressing plate 306 fixedly connected to the connecting column 302 at the bottom of the connecting inclined rod 301 is pressed, and the rubber pad 305 is extruded by the lower pressing plate 306, so that the length of the depth can be increased after the fixed depth, and the drilling process is stable.

[0032] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A broken belt tunnel surrounding rock mechanical response test sensor auxiliary installation device, characterized in that, The application relates to a main rod (1), the surface of the main rod (1) is fixedly provided with a plurality of installation shells (2), the inside of the installation shell (2) is attached with an extension support (3), the outer side of the extension support (3) is fixedly provided with a connecting inclined rod (301), the bottom of the connecting inclined rod (301) is fixedly connected with a connecting column (302), the bottom of the connecting column (302) is fixedly connected with a lower pressing plate (306), the bottom of the lower pressing plate (306) is attached with a rubber pad (305), and the surface of the rubber pad (305) is attached with a ground contact supporting shell (304).

2. The auxiliary installation device for the test sensor of the mechanical response of the surrounding rock of a broken zone tunnel according to claim 1, characterized in that: The installation shell (2) is provided with a screw groove one, the inside of the screw groove one is screwed with an installation bolt (201), the surface of the installation bolt (201) is screwed with a fastening nut (202), and the top of the fastening nut (202) is attached with the bottom of the installation shell (2).

3. The auxiliary installation device for the test sensor of the mechanical response of the surrounding rock of a broken zone tunnel according to claim 1, characterized in that: The ground contact supporting shell (304) is provided with a sliding groove on each side, the inside of the sliding groove is slidingly connected with a limiting block (303), and the inner side of the limiting block (303) is fixedly connected with the lower pressing plate (306).

4. The auxiliary installation device for the test sensor of the mechanical response of the surrounding rock of a broken zone tunnel according to claim 1, characterized in that: The top of the main rod (1) is fixedly connected with a rotating disc (101), and the top of the rotating disc (101) is fixedly provided with a level (102).

5. The auxiliary installation device for the test sensor of the mechanical response of the surrounding rock of a broken zone tunnel according to claim 1, characterized in that: The bottom of the main rod (1) is provided with a screw hole, the inside of the screw hole is screwed with a connecting screw rod (104), and the bottom of the connecting screw rod (104) is fixedly connected with a drill bit (103).

6. The auxiliary installation device for the test sensor of the mechanical response of the surrounding rock of a broken zone tunnel according to claim 1, characterized in that: The extension support (3) is provided with a screw groove two, and the inside of the screw groove two is attached with the installation bolt (201).

7. The auxiliary installation device for the test sensor of the mechanical response of the surrounding rock of a broken zone tunnel according to claim 1, characterized in that: The length value of the rubber pad (305) is consistent with the length value of the inner wall of the ground contact supporting shell (304).

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