Tunnel surrounding rock internal displacement measuring device

By setting up a sealing plate, a fixed ring and a support ring in the internal displacement measuring device of the tunnel surrounding rock, combined with the uniform distribution of the measuring rod, the measuring device and the displacement sensor, the problems of low measurement accuracy and insufficient stability in the prior art are solved, and more reliable measurement results are achieved.

CN223064602UActive Publication Date: 2025-07-04SICHUAN ROAD & BRIDGE CONSTRUCTION GROUP CO LTD
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Patent Information

Application Number
CN202422272097.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-18
Publication Date
2025-07-04
Estimated Expiration
2034-09-18

AI Technical Summary

Technical Problem

The existing tunnel surrounding rock internal displacement measurement device has a simple structure, low accuracy, difficult measurement, insufficient long-term stability, which affects the reliability of the measurement results.

Method used

A internal displacement measurement device for tunnel surrounding rocks including an outer cylinder, an inner cylinder, a pressure relief device, a measurement mechanism and an analysis device is designed. By installing a sealing plate, a fixed ring and a support ring on the front, middle and tail of the device, the stability of the device inside the surrounding rocks is enhanced, and the measurement points are evenly distributed through a measuring mechanism composed of four sets of measuring rods, measuring instruments and displacement sensors, and the reliability of the measurement results is improved.

Benefits of technology

It improves the reliability of the measurement results, reduces errors, enhances the stability of the device inside the surrounding rock, and ensures the accuracy of the measurement data.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of tunnel engineering monitoring, and discloses a tunnel surrounding rock internal displacement measuring device which comprises an outer cylinder and further comprises an inner cylinder, a pressure buffering device, a measuring mechanism and an analyzing device, the side face of the inner wall of the outer cylinder is movably connected with the side face of the inner cylinder, one end of the outer cylinder is fixedly connected with one end of the pressure buffering device, and the other end of the outer cylinder is fixedly connected with the analyzing device. The other end of the pressure buffering device is fixedly connected with the side face of the inner cylinder, the side face of the inner wall of the outer cylinder is fixedly connected with the side face of the measuring mechanism, one end of the outer cylinder is fixedly connected with the side face of the analyzing device, the outer cylinder comprises a sealing plate and a cylinder body, and one end of the sealing plate is fixedly connected with one end of the cylinder body; the inner barrel comprises a barrel wall and a supporting ring, the pressure buffering device comprises springs and air cylinders, the springs and the air cylinders are distributed at intervals, and the front portion, the middle portion and the tail portion of the device are provided with a sealing plate, a fixing ring and the supporting ring respectively, so that the stability of the device in surrounding rock after installation is maintained, and the reliability of a measurement result is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering monitoring, and more specifically to a device for measuring the internal displacement of tunnel surrounding rock. Background Art

[0002] Surrounding rock refers to the rock mass within the range of stress redistribution generated around a tunnel after excavation, or the part of the rock mass that affects the stability of the tunnel after excavation. Surrounding rock is an important part of the tunnel construction area, and its stability and geological conditions have an important impact on the safety and quality of tunnel construction. Therefore, during tunnel construction, it is necessary to conduct a detailed investigation and classification of the surrounding rock and take corresponding support measures to ensure the safety and quality of tunnel construction. The device for measuring the internal displacement of tunnel surrounding rock is installed inside the tunnel surrounding rock and uses technical means such as sensors to monitor the displacement changes of the surrounding rock.

[0003] Deficiencies of the prior art: Although some devices for measuring the internal displacement of tunnel surrounding rock have a simple structure, they have low precision, are difficult to measure, and may lack long-term stability, affecting the reliability of the measurement results. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a device for measuring the internal displacement of tunnel surrounding rock to solve the problems existing in the above-mentioned background art.

[0005] To achieve the above object, the utility model provides the following technical solution: A device for measuring the internal displacement of tunnel surrounding rock, including an outer cylinder, further including: an inner cylinder, a pressure relief device, a measuring mechanism, and an analysis device. The side surface of the inner wall of the outer cylinder is movably connected to the side surface of the inner cylinder. One end of the outer cylinder is fixedly connected to one end of the pressure relief device, and the other end of the pressure relief device is fixedly connected to the side surface of the inner cylinder. The side surface of the inner wall of the outer cylinder is fixedly connected to the side surface of the measuring mechanism, and one end of the outer cylinder is fixedly connected to the side surface of the analysis device. The outer cylinder includes a sealing plate and a cylinder body. One end of the sealing plate is fixedly connected to one end of the cylinder body. The inner cylinder includes a cylinder wall and a support ring. One end of the cylinder wall is fixedly connected to one end of the support ring. The pressure relief device includes a spring and a cylinder, and the spring and the cylinder are distributed at intervals. The measuring mechanism includes a measuring rod and a measuring device. The side surface of the measuring rod is movably connected to the inside of the measuring device. The analysis device includes a display and a wire. The side surface of the display is fixedly connected to one end of the wire.

[0006] Furthermore, one end of the sealing plate is fixedly connected to the side surface of the display, and a plurality of through holes are formed on the side surface of the sealing plate, serving as air holes and mounting holes respectively.

[0007] Further, the side of the cylinder is fixedly connected to the side of the wire, the side of the cylinder is fixedly connected to the inside of the fixing ring, and one end of the cylinder is fixedly connected to one end of the spring and the cylinder.

[0008] Further, the other ends of the spring and the cylinder are fixedly connected to the side of the edge plate, and the inner wall of the edge plate is fixedly connected to the side of the cylinder wall.

[0009] Further, one end of the side of the cylinder wall is provided with a slider, one end of the inner wall of the cylinder is provided with a groove, and one end of the cylinder wall is movably connected to the inside of the cylinder.

[0010] Further, the side of the support ring is fixedly connected to the side of the displacement sensor, the side of the displacement sensor is fixedly connected to one end of the measuring rod, the side of the measuring device is fixedly connected to the inner wall of the cylinder, and the inside of the measuring device is fixedly connected to the side of the connecting wire.

[0011] Further, one end of the wire is fixedly connected to the side of the measuring device.

[0012] The technical effects and advantages of the present utility model:

[0013] 1. By respectively providing a sealing plate, a fixing ring and a support ring at the front, middle and tail of the device, the present utility model is beneficial to maintaining the stability of the device inside the surrounding rock after installation and increasing the reliability of the measurement results.

[0014] 2. By providing a measuring mechanism composed of four groups of measuring rods, measuring devices and displacement sensors, and evenly distributing the measuring points, the present utility model is beneficial to improving the reliability of the measurement results and reducing errors. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 is a schematic diagram of the sectional structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the structure at the connection of the inner and outer cylinders of the present utility model;

[0018] Figure 4 is a schematic diagram of the side structure of the measuring mechanism of the present utility model;

[0019] Figure 5 is a schematic diagram of the structure of the analysis device of the present utility model.

[0020] The reference numerals are: 1, outer cylinder; 101, sealing plate; 102, cylinder body; 103, fixing ring; 2, inner cylinder; 201, cylinder wall; 202, support ring; 203, slider; 3, pressure relief device; 301, spring; 302, cylinder; 303, edge plate; 4, measuring mechanism; 401, measuring rod; 402, measurer; 403, displacement sensor; 404, connecting wire; 5, analysis device; 501, display; 502, wire. Specific implementation manner

[0021] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. In addition, the forms of the respective structures described in the following embodiments are merely examples, and a tunnel surrounding rock internal displacement measuring device related to the present invention is not limited to the respective structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0022] Refer to Figures 1 to 5 , the present invention provides a tunnel surrounding rock internal displacement measuring device, including an outer cylinder 1, and further including: an inner cylinder 2, a pressure relief device 3, a measuring mechanism 4, and an analysis device 5. The inner side of the inner wall of the outer cylinder 1 is movably connected to the side of the inner cylinder 2. One end of the outer cylinder 1 is fixedly connected to one end of the pressure relief device 3, and the other end of the pressure relief device 3 is fixedly connected to the side of the inner cylinder 2. The inner side of the inner wall of the outer cylinder 1 is fixedly connected to the side of the measuring mechanism 4, and one end of the outer cylinder 1 is fixedly connected to the side of the analysis device 5. The outer cylinder 1 includes a sealing plate 101 and a cylinder body 102. One end of the sealing plate 101 is fixedly connected to one end of the cylinder body 102. The inner cylinder 2 includes a cylinder wall 201 and a support ring 202. One end of the cylinder wall 201 is fixedly connected to one end of the support ring 202. The pressure relief device 3 includes a spring 301 and a cylinder 302. The spring 301 and the cylinder 302 are distributed at intervals. The measuring mechanism 4 includes a measuring rod 401 and a measurer 402. The side of the measuring rod 401 is movably connected to the inside of the measurer 402. The analysis device 5 includes a display 501 and a wire 502. The side of the display 501 is fixedly connected to one end of the wire 502.

[0023] Among them, one end of the sealing plate 101 is fixedly connected to the side of the display 501. A plurality of through holes are provided on the side of the sealing plate 101, which are used as air holes and mounting holes respectively. The diameter of the sealing plate 101 is larger than that of the fixing ring 103 and the support ring 202. After installing the device into the mounting hole in the surrounding rock, the sealing plate 101 is in contact with the mounting hole along the diameter and is fixedly connected.

[0024] Among them, the side surface of the cylinder body 102 is fixedly connected to the side surface of the wire 502, the side surface of the cylinder body 102 is fixedly connected to the inside of the fixing ring 103, one end of the cylinder body 102 is fixedly connected to one ends of the spring 301 and the cylinder 302, the fixing ring 103 and the support ring 202 have the same diameter size, separating the outer cylinder 1 and the inner cylinder 2 from the mounting hole wall.

[0025] Among them, the other ends of the spring 301 and the cylinder 302 are fixedly connected to the side surface of the along plate 303, the inner wall of the along plate 303 is fixedly connected to the side surface of the cylinder wall 201, and the spring 301 and the cylinder 302 make the relative displacement of the outer cylinder 1 and the inner cylinder 2 more stable.

[0026] Among them, one end of the side surface of the cylinder wall 201 is provided with a slider 203, a groove is opened at one end of the inner wall of the cylinder body 102, one end of the cylinder wall 201 is movably connected to the inside of the cylinder body 102, and the slider 203 makes the relative displacement of the outer cylinder 1 and the inner cylinder 2 smoother and more fluent, avoiding affecting the measurement results.

[0027] Among them, the side surface of the support ring 202 is fixedly connected to the side surface of the displacement sensor 403, the side surface of the displacement sensor 403 is fixedly connected to one end of the measuring rod 401, the side surface of the measuring device 402 is fixedly connected to the inner wall of the cylinder body 102, the inside of the measuring device 402 is fixedly connected to the side surface of the connecting wire 404, the side surface of the measuring device 402 is fixedly connected to one end of the wire 502. After the displacement sensor 403 detects a change inside the surrounding rock, the measuring rod 401 and the measuring device 402 have a relative displacement. The data measured by the four groups of measuring devices 402 are summarized by the connecting wire 404 and transmitted to the display 501 through the wire 502.

[0028] Working principle of the utility model: The utility model includes an outer cylinder 1, and also includes: an inner cylinder 2, a pressure relief device 3, a measuring mechanism 4, and an analysis device 5. The side of the inner wall of the outer cylinder 1 is movably connected to the side of the inner cylinder 2. One end of the outer cylinder 1 is fixedly connected to one end of the pressure relief device 3. The other end of the pressure relief device 3 is fixedly connected to the side of the inner cylinder 2. The side of the inner wall of the outer cylinder 1 is fixedly connected to the side of the measuring mechanism 4. One end of the outer cylinder 1 is fixedly connected to the side of the analysis device 5. The measuring mechanism 4 is responsible for detecting the internal displacement of the tunnel surrounding rock, and the detected result is transmitted to the analysis device 5. The pressure relief device 3 makes the relative displacement between the outer cylinder 1 and the inner cylinder 2 more stable. After installing this device into the installation hole in the surrounding rock, since the front, middle, and tail parts of this device are respectively provided with a sealing plate 101, a fixing ring 103, and a support ring 202, and the diameters of the fixing ring 103 and the support ring 202 are the same, the outer cylinder 1 and the inner cylinder 2 are separated from the installation hole wall. The diameter of the sealing plate 101 is larger than that of the fixing ring 103 and the support ring 202, and the sealing plate 101 is in contact with and fixedly connected to the installation hole along the diameter, maintaining the stability of the device inside the surrounding rock after installation and increasing the reliability of the measurement result. Among them, the inner cylinder 2 includes a cylinder wall 201 and a support ring 202. One end of the cylinder wall 201 is fixedly connected to one end of the support ring 202. The side of the support ring 202 is fixedly connected to the side of the displacement sensor 403. The side of the displacement sensor 403 is fixedly connected to one end of the measuring rod 401. The side of the measuring device 402 is fixedly connected to the inner wall of the cylinder body 102. The inside of the measuring device 402 is fixedly connected to the side of the connecting wire 404. The side of the measuring device 402 is fixedly connected to one end of the wire 502. After the displacement sensor 403 detects a change inside the surrounding rock, the measuring rod 401 and the measuring device 402 have a relative displacement. The data measured by the four groups of measuring devices 402 are summarized by the connecting wire 404 and transmitted to the display 501 through the wire 502. The four groups of measuring mechanisms 4 composed of the measuring rod 401, the measuring device 402, and the displacement sensor 403 evenly distribute the measuring points, improving the reliability of the measurement result and reducing the error.

[0029] The above are only the preferred embodiments of the utility model and are not used to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for measuring the internal displacement of tunnel surrounding rock, comprising an outer cylinder (1), characterized in that, It further includes: an inner cylinder (2), a pressure relief device (3), a measuring mechanism (4), and an analysis device (5). The side of the inner wall of the outer cylinder (1) is movably connected to the side of the inner cylinder (2). One end of the outer cylinder (1) is fixedly connected to one end of the pressure relief device (3). The other end of the pressure relief device (3) is fixedly connected to the side of the inner cylinder (2). The side of the inner wall of the outer cylinder (1) is fixedly connected to the side of the measuring mechanism (4). One end of the outer cylinder (1) is fixedly connected to the side of the analysis device (5). The outer cylinder (1) includes a sealing plate (101) and a cylinder body (102). One end of the sealing plate (101) is fixedly connected to one end of the cylinder body (102). The inner cylinder (2) includes a cylinder wall (201) and a support ring (202). One end of the cylinder wall (201) is fixedly connected to one end of the support ring (202). The pressure relief device (3) includes a spring (301) and a cylinder (302). The spring (301) and the cylinder (302) are distributed at intervals. The measuring mechanism (4) includes a measuring rod (401) and a measuring device (402). The side of the measuring rod (401) is movably connected to the inside of the measuring device (402). The analysis device (5) includes a display (501) and a wire (502). The side of the display (501) is fixedly connected to one end of the wire (502).

2. The internal displacement measuring device for tunnel surrounding rock according to claim 1, wherein: One end of the sealing plate (101) is fixedly connected to the side of the display (501). A plurality of through holes are formed in the side of the sealing plate (101), serving as air holes and mounting holes respectively.

3. The internal displacement measuring device for tunnel surrounding rock according to claim 1, characterized in that: The side of the cylinder body (102) is fixedly connected to the side of the wire (502). The side of the cylinder body (102) is fixedly connected to the inside of a fixing ring (103). One end of the cylinder body (102) is fixedly connected to one end of the spring (301) and the cylinder (302).

4. The internal displacement measuring device for tunnel surrounding rock according to claim 3, characterized in that: The other ends of the spring (301) and the cylinder (302) are fixedly connected to the side of a flange plate (303). The inner wall of the flange plate (303) is fixedly connected to the side of the cylinder wall (201).

5. The internal displacement measuring device for tunnel surrounding rock according to claim 1, characterized in that: One end of the side of the cylinder wall (201) is provided with a slider (203). A groove is formed in one end of the inner wall of the cylinder body (102). One end of the cylinder wall (201) is movably connected to the inside of the cylinder body (102).

6. The internal displacement measuring device for tunnel surrounding rock according to claim 1, characterized in that: The side of the support ring (202) is fixedly connected to the side of a displacement sensor (403). The side of the displacement sensor (403) is fixedly connected to one end of the measuring rod (401). The side of the measuring device (402) is fixedly connected to the inner wall of the cylinder body (102). The inside of the measuring device (402) is fixedly connected to the side of a connecting wire (404).

7. A device for measuring the internal displacement of tunnel surrounding rock according to claim 1, characterized in that: One end of the wire (502) is fixedly connected to the side of the measuring device (402).