Integrated device for efficiently measuring deformation of surrounding rock of roadway

Abstract

The utility model discloses a roadway surrounding rock deformation efficient measurement integrated device which comprises a connecting plate, each corner of the connecting plate is provided with a deformation measuring scale, each deformation measuring scale is of a cylinder structure, the center position of each deformation measuring scale is installed on the connecting plate through a screw and a scale nut, and the center position of each deformation measuring scale is connected with the connecting plate. An indicating arrow is arranged on the upper surface of the deformation measuring scale; the roadway surrounding rock deformation efficient measurement integrated device is composed of four sets of deformation measurement rulers, surrounding rock deformation in multiple directions can be measured at the same time, the measurement efficiency is improved, and the position of a monitoring point can be accurately determined by reading scales on the surface of the scale nut through the pointer on the surface of the steel cover plate.

Description

Technical Field

[0001] The utility model belongs to the field of tunnel surrounding rock measurement, and in particular relates to a tunnel surrounding rock deformation efficient measurement integrated device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] At present, longwall mining is mainly used in coal mining. To mine a working face, two mining tunnels need to be excavated and a protective coal pillar needs to be left. However, since leaving a coal pillar will lead to stress concentration, coupled with the advanced impact of mining at the working face, the deformation of the surrounding rock of the mining tunnel of the adjacent working face will increase. In order to prevent the collapse of the tunnel surrounding rock vault and take timely measures to ensure the safety of the project, it is necessary to determine the deformation of the surrounding rock to judge the stability of the tunnel surrounding rock and the support effect.

[0004] At present, the commonly used methods for measuring deformation of tunnel surrounding rock mainly include the cross point method, wall microscope observation and ground radar detection. The implementation process of the above methods is complicated, costly and consumes a lot of manpower and material resources. Chinese utility model patent CN211452100U discloses a single-operated auxiliary tool for measuring the deformation of tunnels. The auxiliary measurement of the deformation of tunnels is achieved through the setting of clamps and sleeves. However, this device can only measure the deformation of the surrounding rock in one direction each time. When measuring the deformation of the surrounding rock in another direction, the device needs to be moved, resulting in low measurement efficiency and the inability to determine the location of the monitoring point. Utility Model Content

[0005] The utility model aims to provide an integrated device for efficiently measuring surrounding rock deformation in a tunnel, which can simultaneously measure surrounding rock deformation in multiple directions, improve measurement efficiency, and accurately determine the position of monitoring points.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] In the first aspect, an embodiment of the utility model provides an integrated device for efficiently measuring deformation of tunnel surrounding rock, including a connecting plate, on each corner of which a deformation measuring scale is installed, the deformation measuring scale adopts a cylindrical structure, the center position of the deformation measuring scale is installed on the connecting plate by screws and scale nuts, and an indicator arrow is provided on the upper surface of the deformation measuring scale.

[0008] As a further technical solution, the deformation measuring ruler comprises a steel shell, a flexible measuring belt and an elastic pull strip are arranged inside the steel shell, and the steel shell is closed by a steel cover plate.

[0009] As a further technical solution, the tail of the flexible measuring belt is connected to the head of the elastic pull rod. The surface of the flexible measuring belt is distributed with scale lines for measuring the size of the object to be measured. The head of the elastic pull rod is connected to the tail of the flexible measuring belt for tensioning the flexible measuring belt.

[0010] As a further technical solution, the flexible measuring belt is made of fiber blended fabric, and the head of the flexible measuring belt is provided with an L-shaped steel sheet.

[0011] As a further technical solution, a circular through hole is provided in the middle of the L-shaped steel sheet, and the circular through hole is used for hanging a J-shaped nail.

[0012] As a further technical solution, the elastic pull rod is made of 65# manganese material, the length of the elastic pull rod is the same as that of the flexible measuring belt, and the tail of the elastic pull rod is fixed at the center of the steel shell.

[0013] As a further technical solution, cylindrical through holes are provided in the centers of the steel housing and the steel cover plate for passing screws.

[0014] As a further technical solution, the surface of the scale nut is provided with a 0°-360° annular scale.

[0015] As a further technical solution, two indicating arrows are provided, and the two indicating arrows are arranged at 180 degrees. After the deformation measuring ruler is installed on the connecting plate, the indicating arrows can be exposed.

[0016] As a further technical solution, the connecting plate is square, a circular through hole is provided at the center of the connecting plate, a screw is installed in the circular through hole, and a nut is fixed on the screw.

[0017] The beneficial effects of the above-mentioned embodiments of the utility model are as follows:

[0018] The utility model provides an integrated device for efficiently measuring tunnel surrounding rock deformation, which can effectively solve the problems of complex implementation process and high cost of traditional surrounding rock deformation measurement devices, improve the efficiency of surrounding rock deformation measurement, and reduce measurement costs.

[0019] The mining surrounding rock deformation measuring device in the utility model is composed of 4 sets of deformation measuring rulers, which can measure the surrounding rock deformation in multiple directions at the same time, improve the measurement efficiency, and read the scale nut surface scale through the pointer on the steel cover plate to accurately determine the position of the monitoring point. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model of the integrated device for efficient measurement of tunnel surrounding rock deformation;

[0022] Figure 2 It is a structural schematic diagram of the connecting plate of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the scale nut of the utility model;

[0024] Figure 4 It is a schematic diagram of the internal structure of the deformation measuring ruler of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the steel cover plate of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the flexible measuring belt of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the J-shaped nail of the utility model.

[0028] The schematic diagram is for illustrative purposes only;

[0029] Among them, 1. deformation measuring ruler; 2. connecting plate; 3. J-shaped nail; 4. scale nut; 5. steel shell; 6. steel cover plate; 601. indicator arrow; 7. flexible measuring tape; 701. L-shaped steel sheet; 8. elastic pull rod. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] Example 1

[0032] In a typical implementation of the present invention, Figure 1 As shown, an integrated device for efficient measurement of tunnel surrounding rock deformation is provided, including a connecting plate 2, a deformation measuring ruler 1 is installed on each corner of the connecting plate 2, the deformation measuring ruler 1 adopts a cylindrical structure, the center position of the deformation measuring ruler 1 is installed on the connecting plate 2 by screws and scale nuts 4, and an indicating arrow 601 is provided on the upper surface of the deformation measuring ruler 1.

[0033] Furthermore, two indicating arrows are provided, and the two indicating arrows are arranged at 180 degrees. After the deformation measuring ruler is installed on the connecting plate, the indicating arrows can be exposed.

[0034] like Figure 2As shown, the connecting plate is square, and circular through holes are provided at the center and four corners of the connecting plate. Screws are installed in the circular through holes, and the diameter of the screws is slightly smaller than the diameter of the circular through holes. Nuts are fixed on the screws, and the nuts on the four corners are graduated nuts. Figure 3 As shown, the surface of the scale nut is provided with a 0°-360° annular scale. Furthermore, the circular through hole at the center of the connecting plate is mainly used to allow the screw to pass through it, and then the nut is installed on the screw to reinforce the assembled measuring device and make the device more stable.

[0035] like Figure 4 and Figure 5 As shown, the deformation measuring ruler 1 includes a steel housing 5, in which a flexible measuring belt 7 and an elastic pull strip 8 are arranged, and the steel housing 5 is closed by a steel cover plate 6. The steel housing and the steel cover plate are provided with cylindrical through holes in the center for passing screws to realize the deformation measuring ruler being installed on the connecting plate. Furthermore, corresponding cylindrical through holes are provided on the outer circumference of the steel housing and the steel cover plate, and the steel housing and the steel cover plate are installed through a cylindrical rod.

[0036] Furthermore, the tail of the flexible measuring belt 7 is connected to the head of the elastic pull strip 8, such as Figure 6 As shown, the surface of the flexible measuring belt 7 is distributed with scale lines for measuring the size of the object to be measured, and the head of the elastic pull strip 8 is connected to the tail of the flexible measuring belt 7 for tensioning the flexible measuring belt 7 .

[0037] Specifically, the flexible measuring belt is made of fiber blended fabric, and the head of the flexible measuring belt is provided with an L-shaped steel sheet 701, and the L-shaped steel sheet 701 prevents the flexible measuring belt 7 from entering the interior of the steel housing. A circular through hole is provided in the middle of the L-shaped steel sheet 701, and the circular through hole is used to hang a J-shaped nail 3. The structure of the J-shaped nail 3 is as follows: Figure 7 As shown, the diameter of the J-shaped nail 3 is slightly smaller than the diameter of the circular through hole on the flexible measuring belt.

[0038] In this embodiment, the elastic pull rod 8 is made of 65# manganese material, the length of the elastic pull rod 8 is the same as that of the flexible measuring belt 7, and the tail of the elastic pull rod 8 is fixed at the center position of the steel shell.

[0039] The method of using the integrated device for efficient measurement of tunnel surrounding rock deformation provided in this embodiment is as follows:

[0040] First, select a monitoring section in the tunnel where the deformation of the surrounding rock needs to be monitored, arrange monitoring points at appropriate positions on the top and bottom plates and both sides of the monitoring section, drive J-shaped nails at the monitoring points, assemble the steel shell, steel cover plate, flexible measuring belt and elastic pull rod into a deformation measuring scale (assemble 4 sets), install the 4 sets of deformation measuring scales after assembly to the four corners of the second part of the connecting plate, install the first part of the connecting plate, rotate the deformation measuring scale to align the opening direction of the flexible measuring belt with the J-shaped nail and hang the flexible measuring belt on the upper J-shaped nail, fix the connecting plate with 4 scale nuts and 1 ordinary nut, read the scale at the intersection of the flexible measuring belt and the scale value where the pointer of the steel cover plate is aligned with the scale nut, and determine the size of the surrounding rock section of the measured tunnel and the location of the monitoring points.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An integrated device for efficient measurement of tunnel surrounding rock deformation, characterized in that: It comprises a connecting plate, on each corner of which a deformation measuring ruler is installed. The deformation measuring ruler adopts a cylindrical structure, the center position of which is installed on the connecting plate through screws and scale nuts, and an indicating arrow is arranged on the upper surface of the deformation measuring ruler.

2. The integrated device for efficient measurement of tunnel surrounding rock deformation according to claim 1, characterized in that: The deformation measuring ruler comprises a steel shell, a flexible measuring belt and an elastic pull strip are arranged in the steel shell, and the steel shell is closed by a steel cover plate.

3. The integrated device for efficient measurement of tunnel surrounding rock deformation according to claim 2, characterized in that: The tail of the flexible measuring belt is connected to the head of the elastic pull rod. The surface of the flexible measuring belt is distributed with scale lines for measuring the size of the object to be measured. The head of the elastic pull rod is connected to the tail of the flexible measuring belt and is used to tension the flexible measuring belt.

4. The integrated device for efficient measurement of tunnel surrounding rock deformation according to claim 2, characterized in that: The flexible measuring belt is made of fiber blended fabric, and the head of the flexible measuring belt is provided with an L-shaped steel sheet.

5. The integrated device for efficient measurement of tunnel surrounding rock deformation according to claim 4 is characterized in that: A circular through hole is arranged in the middle of the L-shaped steel sheet, and the circular through hole is used for hanging a J-shaped nail.

6. The integrated device for efficient measurement of tunnel surrounding rock deformation according to claim 2, characterized in that: The elastic pull rod is made of 65# manganese material. The length of the elastic pull rod is the same as that of the flexible measuring belt. The tail of the elastic pull rod is fixed at the center position of the steel shell.

7. The integrated device for efficient measurement of tunnel surrounding rock deformation according to claim 2, characterized in that: The steel housing and the steel cover plate are provided with cylindrical through holes at their centers for passing screws.

8. The integrated device for efficient measurement of tunnel surrounding rock deformation according to claim 1, characterized in that: The surface of the scale nut is provided with a 0°-360° annular scale.

9. The integrated device for efficient measurement of tunnel surrounding rock deformation according to claim 1, characterized in that: There are two indicating arrows, which are arranged at 180 degrees. After the deformation measuring ruler is installed on the connecting plate, the indicating arrows can be exposed.

10. The integrated device for efficient measurement of tunnel surrounding rock deformation according to claim 1, characterized in that: The connecting plate is square, and a circular through hole is arranged at the center of the connecting plate. A screw is installed in the circular through hole, and a nut is fixed on the screw.

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