A double-support structure for a vertical shaft facilitating the monitoring of soil surrounding rock

Abstract

The present invention discloses a double-support structure for a shaft facilitating the monitoring of soil surrounding rock, comprising: a first shaft support, a second shaft support, and displacement sensors. The second shaft support is of a cylindrical structure, and the first shaft support is concentrically arranged outside the second shaft support. The first shaft support includes ribs distributed in an annular array and flexible bodies connected between adjacent ribs. The ribs are parallel to the axis of the second shaft support. The displacement sensors are arranged on the outer circle of the second shaft support to monitor the deformation of the flexible bodies. In the above manner, for the double-support structure for a shaft facilitating the monitoring of soil surrounding rock according to the present invention, flexible support is carried out through the first shaft support to adapt to the deformation of the soil surrounding rock, the support strength is ensured by using the second shaft support to achieve double support, and the displacement of the flexible bodies is monitored by using the displacement sensors, thereby realizing the monitoring and early warning of the deformation of the soil surrounding rock.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft support, and particularly to a double-shaft support structure for a shaft that facilitates the monitoring of soil surrounding rock. Background Art

[0002] In order to meet the requirements of tunnel ventilation, construction of underground projects, etc., it is necessary to excavate a vertical shaft extending upward from the top or one side of the tunnel. Due to the complex geological conditions such as soil and rock, there are many unstable factors, and the safety of the underground shaft cannot be guaranteed. A support structure is required for support and protection to reduce collapse accidents.

[0003] Due to the complex geological conditions around the shaft, in extreme cases, the soil surrounding rock and the like will displace, affecting the stability of the support structure. In the prior art, the outer surface of the support structure is in direct contact with the surrounding soil surrounding rock, and the support structure is greatly affected by the soil surrounding rock and it is difficult to carry out monitoring and early warning, which needs to be improved. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is to provide a double-shaft support structure for a shaft that facilitates the monitoring of soil surrounding rock, for the protection of the shaft and the monitoring of the surrounding soil surrounding rock, and to realize early warning when the displacement of the soil surrounding rock occurs.

[0005] To solve the above technical problem, a technical solution adopted by the present invention is: to provide a double-shaft support structure for a shaft that facilitates the monitoring of soil surrounding rock, including: a first shaft support, a second shaft support, and a displacement sensor. The second shaft support is a cylindrical structure, and the first shaft support is concentrically arranged outside the second shaft support. The first shaft support includes ribs distributed in an annular array and a flexible body connected between adjacent ribs. The ribs are parallel to the axis of the second shaft support, and the displacement sensor is arranged on the outer circle of the second shaft support to monitor the deformation of the flexible body.

[0006] In a preferred embodiment of the present invention, the second shaft support is a concrete cylinder, and a steel mesh is embedded in the second shaft support.

[0007] In a preferred embodiment of the present invention, a connecting rod extending to the outside of the second shaft support and connected to the rib is arranged on the steel mesh.

[0008] In a preferred embodiment of the present invention, the connecting rod extends radially along the second shaft support.

[0009] In a preferred embodiment of the present invention, foamed plastic is filled between the first shaft support and the second shaft support.

[0010] In a preferred embodiment of the present invention, the displacement sensor adopts a magnetostrictive displacement sensor or a potentiometer displacement sensor.

[0011] In a preferred embodiment of the present invention, when the displacement sensor adopts a magnetostrictive displacement sensor, a corresponding movable magnetic ring is arranged on the inner side of the flexible body.

[0012] In a preferred embodiment of the present invention, an installation sleeve corresponding to the displacement sensor is radially arranged on the outer circle of the second shaft support, and the displacement sensor is arranged in the installation sleeve and points outward.

[0013] In a preferred embodiment of the present invention, a threaded hole is arranged in the installation sleeve, a plug is arranged in the threaded hole, and the displacement sensor is arranged at the outer end of the plug.

[0014] In a preferred embodiment of the present invention, the flexible body adopts an arc-shaped steel plate, a wire mesh or a nylon mesh.

[0015] The beneficial effects of the present invention are as follows: A double shaft support structure for facilitating the monitoring of soil surrounding rock pointed out by the present invention uses the first shaft support for flexible support to adapt to the deformation of the soil surrounding rock, uses the second shaft support to ensure the support strength, realizes double support, and uses a displacement sensor to monitor the displacement of the flexible body, thereby realizing the monitoring and early warning of the deformation of the soil surrounding rock and improving the use safety of the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0017] Figure 1 is a schematic structural diagram of a preferred embodiment of a double shaft support structure for facilitating the monitoring of soil surrounding rock according to the present invention;

[0018] Figure 2 is Figure 1 the top view of

[0019] Figure 3 is a schematic structural diagram of a preferred embodiment of the installation sleeve in a double shaft support structure for facilitating the monitoring of soil surrounding rock according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] Please refer to Figures 1 to 3 , the embodiments of the present invention include:

[0022] Such as Figure 1 The shaft double support structure convenient for monitoring soil surrounding rock shown in the figure includes: the first shaft support 2, the second shaft support 1 and the displacement sensor 3. The second shaft support 1 is a cylindrical structure, which is convenient for the support of the shaft. In this embodiment, the second shaft support 1 is a concrete cylinder with high structural strength. A steel mesh 11 is embedded in the second shaft support 1 to further enhance the structural strength and ensure the shaft support effect.

[0023] The first shaft support 2 is concentrically arranged outside the second shaft support 1, and flexible support is carried out through the first shaft support 2 to adapt to the deformation of the soil surrounding rock and reduce the damage of the second shaft support 1. The first shaft support 2 includes rib strips 21 distributed in an annular array and a flexible body 23 connected between adjacent rib strips 21. As Figure 2 shown, the rib strips 21 are parallel to the axis of the second shaft support 1, are distributed in an annular array around the second shaft support 1, and leave a certain gap with the outer circle of the second shaft support 1 for fixing the flexible body 23, and the flexible body 23 is extruded and deformed when the soil surrounding rock is displaced.

[0024] In this embodiment, the flexible body 23 is made of arc-shaped steel plates, wire meshes or nylon meshes, and is fixed between adjacent rib strips 21 by welding or tying. The arc-shaped steel plates are made of thin steel plates and are easy to deform when stressed.

[0025] In order to monitor the soil surrounding rock, the displacement sensor 3 is arranged on the outer circle of the second shaft support 1 to monitor the deformation of the flexible body 23. Through the deformation and displacement of the flexible body 23, the displacement of the soil surrounding rock can be indirectly obtained, which is beneficial for early warning. The displacement sensor 3 adopts a magnetostrictive displacement sensor or a potentiometer type displacement sensor. In this embodiment, the displacement sensor 3 adopts a magnetostrictive displacement sensor, and a corresponding movable magnetic ring 31 is arranged on the inner side of the flexible body 23. When the flexible body 23 deforms, the movable magnetic ring 31 moves and is sensed by the displacement sensor 3 to obtain the displacement amount.

[0026] The displacement sensor 3 can be connected to a microprogram controller to generate a displacement signal, and through the statistical analysis of the microprogram controller, early warning can be carried out when an abnormality occurs. In this embodiment, a foamed plastic 4 is filled between the first shaft support 2 and the second shaft support 1 to carry out flexible support and adapt to the deformation of the soil surrounding rock.

[0027] In order to fix the rib strips 21, a connecting rod 22 extending to the outside of the second shaft support 1 and connected to the rib strips 21 is welded on the steel mesh 11. As Figure 2As shown, the connecting rod 22 extends radially along the second shaft support 1 and is evenly distributed, improving the structural stability of part of the rib 21 of the first shaft support 2.

[0028] In order to install and adjust the displacement sensor 3, an installation sleeve 5 corresponding to the displacement sensor 3 can be radially arranged on the outer circle of the second shaft support 1. As Figure 2 shown, the installation sleeve 5 is embedded in the second shaft support 1, the displacement sensor 3 is arranged in the installation sleeve 5 and points outward. A threaded hole is arranged in the installation sleeve 5, and a plug 6 is arranged in the threaded hole. The displacement sensor 3 is fixed to the outer end of the plug 6 by screws or adhesives. By rotating the plug 6 in the installation sleeve 5, the front and back adjustment of the displacement sensor 3 can be carried out, making the installation and debugging more convenient.

[0029] In summary, a double shaft support structure for facilitating the monitoring of soil surrounding rock proposed by the present invention realizes the double support of the shaft, monitors the soil surrounding rock through the displacement sensor, gives an early warning in case of anomalies, and improves the safety of shaft use.

[0030] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A double-support structure for a shaft facilitating the monitoring of soil surrounding rock, characterized in that, it includes: a first shaft support, a second shaft support and a displacement sensor. The second shaft support is of a cylindrical structure. The first shaft support is concentrically arranged outside the second shaft support. The first shaft support includes ribs distributed in an annular array and a flexible body connected between adjacent ribs. The ribs are parallel to the axis of the second shaft support. The displacement sensor is arranged on the outer circle of the second shaft support to monitor the deformation of the flexible body. The second shaft support is a concrete cylinder, and a steel mesh is embedded in the second shaft support. A connecting rod extending to the outside of the second shaft support and connected to the ribs is arranged on the steel mesh. An installation sleeve corresponding to the displacement sensor is radially arranged on the outer circle of the second shaft support. The displacement sensor is arranged in the installation sleeve and points outward. A threaded hole is arranged in the installation sleeve, and a plug is arranged in the threaded hole. The displacement sensor is arranged at the outer end of the plug. A foamed plastic is filled between the first shaft support and the second shaft support. The displacement sensor adopts a magnetostrictive displacement sensor or a potentiometer displacement sensor. When the displacement sensor adopts a magnetostrictive displacement sensor, a corresponding movable magnetic ring is arranged on the inner side of the flexible body. The flexible body adopts an arc-shaped steel plate, a wire mesh or a nylon mesh.

2. The double-support structure for a shaft facilitating the monitoring of soil surrounding rock according to claim 1, characterized in that, the connecting rod extends radially along the second shaft support.

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