Tunnel surrounding rock settlement monitoring device

Abstract

The utility model belongs to the technical field of tunnel settlement monitoring, and particularly relates to a tunnel surrounding rock settlement monitoring device which comprises an arch-shaped frame, a plurality of monitoring assemblies are fixedly installed on the arch-shaped frame, each monitoring assembly comprises a horizontal plate, a pressing plate and a driving part used for driving the horizontal plate to ascend and descend, and the driving parts are fixedly installed on the arch-shaped frame. A plurality of guide columns are arranged on the side wall, away from the driving part, of the horizontal plate, a plurality of guide holes allowing the guide columns to penetrate through are formed in the pressing plate, a pressure sensor is arranged between the pressing plate and the horizontal plate, and a feeler lever is arranged on the side wall, away from the horizontal plate, of the pressing plate. According to the tunnel surrounding rock settlement monitoring device, the feeler lever in the monitoring assembly abuts against the inner wall of the tunnel, when the tunnel surrounding rock settles, the feeler lever at the corresponding part is stressed, and the pressure sensor can monitor that the pressure from the pressing plate is increased, so that the settlement deformation of the tunnel surrounding rock is monitored, and the structure of the tunnel surrounding rock is not damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel settlement monitoring, and in particular relates to a tunnel surrounding rock settlement monitoring device. Background Art

[0002] Tunnels are usually buried underground or cross mountains. They are greatly affected by geological and hydrological conditions. Under the influence of external factors, tunnels may sink, converge, and deform. Once a tunnel collapse accident occurs, it will not only pose a huge threat to the personal safety of construction workers, but also extend the tunnel construction period and increase the project budget. Therefore, it is necessary to monitor the settlement of tunnel surrounding rock and understand the settlement of tunnel surrounding rock so that timely countermeasures can be taken when the settlement exceeds the standard.

[0003] At present, the monitoring of tunnel surrounding rock settlement is usually carried out by installing multiple fiber grating height difference meters at the tunnel vault, and then calculating the settlement value through a laser rangefinder. The above-mentioned fiber grating height difference meter and laser rangefinder need to be fixedly installed, especially the fixed installation of the fiber grating height difference meter, which requires drilling holes in the tunnel vault, thereby destroying the tunnel surrounding rock structure and affecting the stability of the tunnel surrounding rock. Moreover, the above-mentioned tunnel surrounding rock settlement monitoring equipment only monitors the settlement of the tunnel vault surrounding rock, and the monitoring range is limited. It is impossible to monitor the settlement of the surrounding rock part other than the tunnel vault surrounding rock. Utility Model Content

[0004] The utility model aims to provide a tunnel surrounding rock settlement monitoring device to solve the problem that tunnel surrounding rock settlement monitoring may damage the tunnel surrounding rock structure.

[0005] In order to achieve the above-mentioned purpose, the scheme of the utility model is as follows: a tunnel surrounding rock settlement monitoring device includes an arch frame, on which a plurality of monitoring components are fixedly installed, the monitoring components include a horizontal plate, a pressing plate and a driving member for driving the horizontal plate to rise and fall, the driving member is fixedly installed on the arch frame, a plurality of guide columns are provided on a side wall of the horizontal plate away from the driving member, a plurality of guide holes for the guide columns to pass through are opened on the pressing plate, a pressure sensor is provided between the pressing plate and the horizontal plate, and a touch rod is provided on a side wall of the pressing plate away from the horizontal plate.

[0006] The working principle and beneficial effects of this solution are as follows: in this solution, the arch frame is close to the inner wall of the tunnel, and the feeler rod in the monitoring component is against the inner wall of the tunnel. When the tunnel surrounding rock sinks, the feeler rod at the corresponding position is subjected to force, the pressing plate is squeezed, and the pressure sensor monitors the pressure from the pressing plate. In this way, the monitoring personnel can judge whether the tunnel surrounding rock has sunk and deformed and the degree of the sunk and deformed according to the pressure data transmitted by the pressure sensor, so that the construction personnel can take corresponding measures in time, and this solution will not damage the structure of the tunnel surrounding rock.

[0007] Moreover, several monitoring components in this scheme can monitor tunnel surrounding rocks at multiple locations, and the monitoring components do not affect each other. The monitoring personnel can number the monitoring components, and the pressure monitored by the pressure sensor in the corresponding numbered monitoring component will not affect the pressure monitoring of other monitoring components, so that the monitoring personnel can grasp the location of the settlement and deformation of the tunnel surrounding rock, and then realize the settlement and deformation monitoring of local surrounding rocks of multiple tunnels.

[0008] Moreover, after the tunnel surrounding rock subsidence occurs, this scheme can provide temporary support for the tunnel surrounding rock, buying valuable time for construction personnel to take corresponding measures.

[0009] Optionally, a threaded section is provided at one end of the guide column away from the horizontal plate, and a locking nut is threadedly connected to the threaded section.

[0010] In this solution, after the threaded section on the guide column is threadedly connected with the locking nut, it can prevent the pressing plate from being separated from the horizontal plate.

[0011] Optionally, both ends of the arch frame are fixedly connected to a bottom plate.

[0012] In this solution, the provision of the bottom plate can increase the contact area between the device and the tunnel floor, thereby preventing the arch frame from tipping over in the tunnel.

[0013] Optionally, a plurality of universal wheels with brakes are fixedly mounted on the bottom surface of the base plate.

[0014] In this solution, the universal wheels with brakes on the bottom plate make it easy for monitoring personnel to push the device to move.

[0015] Optionally, the arch frame includes an arch frame body I and an arch frame body II arranged side by side, a plurality of connecting plates are provided between the arch frame body I and the arch frame body II, and the driving member is fixedly mounted on the connecting plates.

[0016] In this solution, the arch frame body I, the arch frame body II and the connecting plate together constitute the arch frame, and the driving member is installed on the connecting plate. In this way, the monitoring components are distributed on the center position line of the arch frame, and the overall balance of the device is good.

[0017] Optionally, the connecting plate is integrally formed with the arch frame body I and the arch frame body II.

[0018] In this solution, the arch frame obtained by integral molding has good integrity and better stress-bearing performance.

[0019] Optionally, the driving member is an electric push rod, an electro-hydraulic push rod, a pneumatic cylinder or a hydraulic cylinder.

[0020] In this solution, electric push rods, electro-hydraulic push rods, air cylinders or hydraulic cylinders can all be used as linear reciprocating motion actuators. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a tunnel surrounding rock settlement monitoring device in Embodiment 1 of the present utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the monitoring component in the first embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the monitoring assembly when the pressing plate and the horizontal plate are separated in the first embodiment of the utility model;

[0024] Figure 4 It is a top view of the horizontal plate in the first embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the monitoring component in the second embodiment of the present utility model;

[0026] Figure 6 It is a schematic diagram of the structure of the monitoring assembly after the locking nut is separated from the threaded section in the second embodiment of the present utility model. DETAILED DESCRIPTION

[0027] The following is further described in detail through specific implementation methods:

[0028] The marks in the drawings of the specification include: arch frame 1, arch frame body I 101, arch frame body II 102, connecting plate 103, monitoring component 2, horizontal plate 201, pressing plate 202, guide hole 2021, driving member 203, guide column 204, threaded section 2041, pressure sensor 205, touch rod 206, locking nut 207, base plate 3, universal wheel 4.

[0029] Embodiment 1

[0030] This embodiment is basically Figure 1 and Figure 2 As shown: a tunnel surrounding rock settlement monitoring device includes an arch frame 1, on which a plurality of monitoring components 2 are fixedly installed. The arch frame 1 includes an arch frame body Ⅰ101 and an arch frame body Ⅱ102 arranged side by side, and a plurality of connecting plates 103 are arranged between the arch frame body Ⅰ101 and the arch frame body Ⅱ102, and the number of the connecting plates 103 is the same as the number of the monitoring components 2, and the connecting plates 103 are in a horizontal state; in this embodiment, the connecting plates 103 are integrally formed with the arch frame body Ⅰ101 and the arch frame body Ⅱ102. Both ends of the arch frame 1 are fixed with a bottom plate 3 by bolts, and the bottom surface of the bottom plate 3 is fixedly installed with a plurality of universal wheels 4 with brakes; in this embodiment, the number of the universal wheels 4 is four, and the four universal wheels 4 are distributed on the four corners of the bottom plate 3.

[0031] Combination Figure 3 and Figure 4As shown, the monitoring assembly 2 includes a horizontal plate 201, a pressing plate 202, and a driving member 203 for driving the horizontal plate 201 to rise and fall. The driving member 203 is fixedly mounted on the connecting plate 103. The driving member 203 is an electric push rod, an electro-hydraulic push rod, a cylinder or a hydraulic cylinder. In this embodiment, the driving member 203 is an electric push rod. The horizontal plate 201 is fixedly mounted on the output end of the driving member 203. A plurality of guide posts 204 are welded on the upper surface of the horizontal plate 201. The pressing plate 202 is provided with a plurality of guide holes 2021 for the guide posts 204 to pass through. In this embodiment, the number of the guide posts 204 is four, the number of the guide holes 2021 is four, and the four guide posts 204 are distributed on the four corners of the horizontal plate 201. A pressure sensor 205 is provided between the pressing plate 202 and the horizontal plate 201. The pressure sensor 205 is fixed on the horizontal plate 201. A feeler rod 206 is welded on the upper surface of the pressing plate 202. The feeler rod 206 is located at the center of the pressing plate 202. In this embodiment, the number of monitoring components 2 is seven.

[0032] In actual use, the monitoring personnel push the device to the monitoring site, brake it with the brakes provided by the universal wheel 4, and park the device at the monitoring site. Then, the driving member 203 is started, and the driving member 203 drives the horizontal plate 201 to move upward (to ensure that the device moves smoothly in the tunnel, the output end of the driving member 203 is at the starting position of the stroke, that is, the horizontal plate 201 is at the lowest position at this time), so that the pressing plate 202 and the touch rod 206 move upward, and when the top of the touch rod 206 abuts against the inner wall of the tunnel, the driving member 203 stops working (when the top of the touch rod 206 abuts against the inner wall of the tunnel, the touch rod 206 is subjected to resistance, causing the pressing plate 202 to apply pressure to the pressure sensor 205, and the pressure sensor 205 detects that the pressure becomes larger, and the monitoring personnel control the driving member 203 to stop working according to the pressure information transmitted from the pressure sensor 205). In this way, even if the inner wall of the tunnel is uneven (the inner wall of the tunnel has concave parts and protruding parts), under the action of the driving member 203, the top of the feeler rod 206 can touch the tunnel surrounding rock at the corresponding position, thereby starting the tunnel surrounding rock settlement monitoring work.

[0033] When the tunnel surrounding rock sinks, the feeler rod 206 in the monitoring assembly 2 corresponding to the sinking position is subjected to downward pressure, thereby applying downward pressure to the pressing plate 202, and the pressure value detected by the pressure sensor 205 between the pressing plate 202 and the horizontal plate 201 increases. The monitoring personnel judge that the tunnel surrounding rock at the corresponding position has a sinking deformation problem based on the pressure data transmitted by the pressure sensor 205. Moreover, the severity of the sinking deformation of the tunnel surrounding rock at the corresponding position can be judged by the size of the pressure data (the larger the pressure data, the more serious the sinking deformation), so that the construction personnel can take corresponding measures to remedy the situation in time. Moreover, the device in this embodiment can provide temporary support for the tunnel surrounding rock, and buy valuable processing time for the construction personnel.

[0034] In addition, in this embodiment, the monitoring components 2 do not affect each other. The monitoring personnel can number the monitoring components 2. Each group of monitoring components 2 has its own corresponding tunnel surrounding rock, thereby realizing the settlement and deformation monitoring of local surrounding rocks of multiple tunnels, and being able to quickly grasp the locations of settlement and deformation of the tunnel surrounding rock, so that construction personnel can quickly locate the parts of the tunnel surrounding rock where measures need to be taken.

[0035] Embodiment 2

[0036] The difference between this embodiment and the first embodiment is that: Figure 5 and Figure 6 As shown, in this embodiment, a threaded section 2041 is provided at the top of the guide column 204 , and a locking nut 207 is threadedly connected to the threaded section 2041 .

[0037] In this embodiment, after the pressing plate 202 passes through the guide column 204, the locking nut 207 is threadedly connected to the threaded section 2041 of the guide column 204, thereby preventing the pressing plate 202 from being separated from the horizontal plate 201. After the locking nut 207 is removed, the monitoring personnel can remove the pressing plate 202, thereby replacing or repairing the pressure sensor 205 on the horizontal plate 201.

[0038] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the utility model. The specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A tunnel surrounding rock settlement monitoring device, comprising an arch frame, on which a plurality of monitoring components are fixedly mounted, characterized in that: The monitoring assembly includes a horizontal plate, a pressing plate and a driving member for driving the horizontal plate to rise and fall. The driving member is fixedly mounted on the arch frame. A plurality of guide columns are provided on a side wall of the horizontal plate away from the driving member. A plurality of guide holes for the guide columns to pass through are opened on the pressing plate. A pressure sensor is provided between the pressing plate and the horizontal plate. A touch rod is provided on a side wall of the pressing plate away from the horizontal plate.

2. The tunnel surrounding rock settlement monitoring device according to claim 1 is characterized in that: A threaded section is provided at one end of the guide column away from the horizontal plate, and a locking nut is threadedly connected to the threaded section.

3. The tunnel surrounding rock settlement monitoring device according to claim 1 is characterized in that: Both ends of the arch frame are fixedly connected with a bottom plate.

4. The tunnel surrounding rock settlement monitoring device according to claim 3 is characterized in that: A plurality of universal wheels with brakes are fixedly mounted on the bottom surface of the bottom plate.

5. The tunnel surrounding rock settlement monitoring device according to claim 1 is characterized in that: The arch frame comprises an arch frame body I and an arch frame body II arranged side by side, a plurality of connecting plates are arranged between the arch frame body I and the arch frame body II, and the driving member is fixedly mounted on the connecting plates.

6. The tunnel surrounding rock settlement monitoring device according to claim 5 is characterized in that: The connecting plate is integrally formed with the arch frame body I and the arch frame body II.

7. The tunnel surrounding rock settlement monitoring device according to claim 1, characterized in that: The driving member is an electric push rod, an electro-hydraulic push rod, a cylinder or a hydraulic cylinder.

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