Supporting test device for high-ground-pressure soft rock roadway

Abstract

The utility model discloses a high earth pressure soft rock roadway support test device and test method, comprising two side steel shed assemblies respectively arranged on two sides of the inner wall of a roadway; the steel shed roof is arranged at the top of the inner wall of the roadway, and the two ends of the steel shed roof are connected with the two side steel shed assemblies; the U-shaped steel bottom beam is arranged at the bottom of the inner wall of the roadway, and the two ends of the U-shaped steel bottom beam are connected with the two side steel shed assemblies; and the pressure detection mechanism is arranged on the side steel shed assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of roadway support equipment, and in particular to a support test device for soft rock roadways under high ground pressure. Background Technology

[0002] A tunnel is a passageway excavated during underground mining for purposes such as hoisting, transportation, ventilation, drainage, and power supply. The cross-sectional shape of tunnels is mostly arched, trapezoidal, or rectangular; in areas with soft surrounding rock, they are circular, elliptical, or horseshoe-shaped.

[0003] Chinese Patent Application No. 202021246768.4 discloses a steel canopy for supporting soft rock roadways under high ground pressure, which solves the problem of unstable support structures and easy floor heave in roadways under high ground pressure. The technical solution is as follows: the two bottom ends of the steel canopy roof are connected to steel canopy legs by U-shaped cable clamps. The bottom ends of the steel canopy legs are fixedly connected to pads. U-shaped steel blocks are fixedly installed at the junction of the steel canopy legs and the roadway floor. The U-shaped steel bottom beam is fixed between the pads and the U-shaped steel blocks on both sides of the roadway, forming a U-shaped steel canopy support system. This utility model has the characteristics of stable structure, safety and reliability, and good floor heave control effect.

[0004] 1. The aforementioned patent has the problem that it is inconvenient for staff to detect the pressure on the steel shed, which makes it difficult for staff to judge the lifespan of the steel shed, thus reducing the working capacity of the steel shed; 2. The aforementioned patent has the problem that the impact caused by staff walking can easily have an adverse effect on the steel shed and it is inconvenient to provide auxiliary lighting when needed, thus reducing the practicality of the steel shed. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a support test device for soft rock tunnels under high ground pressure.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A support test device for soft rock tunnels under high ground pressure includes:

[0008] Two side steel canopy components are respectively installed on both sides of the inner wall of the tunnel;

[0009] The steel canopy roof is installed on the top of the inner wall of the tunnel, and its two ends are connected to two side steel canopy components respectively.

[0010] U-shaped steel bottom beams are installed at the bottom of the inner wall of the tunnel, with their two ends connected to two side steel canopy components respectively.

[0011] The pressure testing mechanism is installed on the side steel canopy assembly;

[0012] The buffer and lighting mechanism is located on the upper part of the U-shaped steel bottom beam.

[0013] The bottom of the side steel canopy assembly is equipped with pads.

[0014] The pressure detection mechanism includes:

[0015] The fixing sleeve is horizontally installed on the side steel canopy assembly;

[0016] A horizontally mounted motor has a mounting block at its bottom, which is installed in a fixed sleeve by a spring pin.

[0017] The lead screw is connected to the main shaft of the motor.

[0018] A vertically positioned movable plate is threaded onto a lead screw at the bottom.

[0019] At least one horizontally placed cone is mounted on the moving plate, and a pressure sensor is mounted on its tip;

[0020] The insert cone can be inserted into the corresponding hole on the side steel shed assembly, so that the insert cone can be inserted into the side wall of the roadway with the pressure sensor to perform pressure detection.

[0021] A limit plate is provided at the end of the lead screw.

[0022] The buffer and lighting mechanism includes:

[0023] Rubber blocks are installed on the upper part of the U-shaped steel bottom beam;

[0024] The connecting plate is laid flat on the rubber block, and its two ends are connected to the U-shaped steel bottom beam through dampers;

[0025] Several lights are installed on both sides of the connecting plate.

[0026] The lighting lamp is covered with a transparent shell.

[0027] The upper part of the connecting plate is provided with an anti-slip layer.

[0028] The beneficial effects of this utility model are:

[0029] 1. By setting up a pressure detection mechanism, this utility model enables workers to detect the pressure on the side steel shed components through various pressure sensors when needed, thereby facilitating the acquisition of test data of the device during support work, and making it easier for workers to judge the lifespan of the device, etc. In addition, the device can be fixed in position by various cones, thereby improving the working capacity of the device.

[0030] 2. By setting up a buffer and lighting mechanism, this utility model enables the device to buffer the impact brought by workers walking, thereby reducing the possibility of adverse effects on the U-shaped steel bottom beam. In addition, the device can provide auxiliary lighting with a lamp when needed, thus improving the practicality of the device. Attached Figure Description

[0031] Figure 1 This is a perspective view of the present utility model;

[0032] Figure 2 This is a schematic diagram of the structure of this utility model;

[0033] Figure 3 This is a schematic diagram of the pressure detection mechanism;

[0034] Figure 4 This is a schematic diagram of the buffer and lighting mechanism.

[0035] In the diagram: 1. Side steel canopy assembly; 2. Pressure detection mechanism; 21. Fixing sleeve; 22. Mounting block; 23. Spring pin; 24. Motor; 25. Limiting plate; 26. Lead screw; 27. Moving plate; 28. Pressure sensor; 29. ​​Insert cone; 3. Shim; 4. U-shaped steel bottom beam; 5. Buffer and lighting mechanism; 51. Connecting plate; 52. Rubber block; 53. Damper; 54. Lighting lamp; 55. Transparent shell; 56. Anti-slip layer; 6. Steel canopy roof. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0037] like Figures 1 to 4As shown, a support test device for a high-pressure soft rock tunnel includes: two side steel canopy assemblies 1, respectively installed on both sides of the tunnel inner wall; a steel canopy top 6, installed at the top of the tunnel inner wall, with its two ends connected to the two side steel canopy assemblies 1; a U-shaped steel bottom beam 4, installed at the bottom of the tunnel inner wall, with its two ends connected to the two side steel canopy assemblies 1; a pressure detection mechanism 2, installed on the side steel canopy assemblies 1; and a buffer and lighting mechanism 5, installed on the upper part of the U-shaped steel bottom beam 4. A pad 3 is installed at the bottom of each side steel canopy assembly 1. The pressure detection mechanism 2 includes: a fixed sleeve 21, horizontally mounted on the side steel shed assembly 1; a horizontally mounted motor 24, with a mounting block 22 at its bottom, the mounting block 22 being mounted inside the fixed sleeve 21 via a spring pin 23; a lead screw 26, connected to the main shaft of the motor 24; a vertically mounted moving plate 27, with its bottom threaded onto the lead screw 26; and at least one horizontally positioned insert cone 29, mounted on the moving plate 27, with a pressure sensor 28 at its tip. The insert cone 29 can be inserted into a corresponding hole on the side steel shed assembly 1, allowing the insert cone 29 to insert the pressure sensor 28 into the side wall of the tunnel for pressure detection. A limit plate 25 is provided at the end of the lead screw 26. The buffer and lighting mechanism 5 includes: a rubber block 52, mounted on the upper part of the U-shaped steel bottom beam 4; a connecting plate 51, laid flat on the rubber block 52, with both ends connected to the U-shaped steel bottom beam 4 via dampers 53; and several lighting lamps 54, mounted on both sides of the connecting plate 51. The lighting lamp 54 is provided with a transparent shell 55. The upper part of the connecting plate 51 is provided with an anti-slip layer 56.

[0038] This utility model can detect the pressure on the side steel shed assembly 1 through each pressure sensor 28 when needed, thereby facilitating the staff to obtain test data of the device in the support work, and thus facilitating the staff to judge the life of the device, etc., and can also assist in fixing the position of the device through each insertion cone 29.

[0039] When the device is needed to support a soft rock roadway under high ground pressure, the entire assembly consisting of the side steel canopy assembly 1, the U-shaped steel bottom beam 4, the steel canopy roof 6, and the pad iron 3 is placed in the roadway to support it. When it is necessary to obtain test data on the pressure on the side steel canopy assembly 1 during the support operation, the motors 24 in the two pressure detection mechanisms 2 are started. The two motors 24 drive the two lead screws 26 to rotate, which in turn drives the two moving plates 27 to insert each cone 29 into the side of the roadway. Then, the pressure is detected by the pressure sensor 28. The spring pin 23 connects the fixing sleeve 21 and the mounting block 22, and the limiting plate 25 limits the movement.

[0040] The buffer and lighting mechanism 5 can buffer the impact of workers walking, thereby reducing the possibility of adverse effects on the U-shaped steel bottom beam 4, and the device can provide auxiliary lighting through the lighting lamp 54 when needed.

[0041] Specifically, the buffer and lighting mechanism 5 also includes an anti-slip layer 56, which is installed between the connecting plate 51 and the two lights 54.

[0042] The rubber block 52 and damper 53 in the buffer and lighting mechanism 5 can buffer the impact of walking, thereby preventing the U-shaped steel bottom beam 4 from being adversely affected. The anti-slip layer 56 on the connecting plate 51 plays a role in preventing the staff from slipping. When needed, the staff can turn on the lighting 54 to provide auxiliary lighting for the surroundings. The transparent shell 55 plays a role in protecting the lighting 54.

[0043] The U-shaped steel bottom beam 4 of this invention is an inverted arch shape, which can effectively control the ground pressure intensity in the roadway and achieve good control of floor heave. The two ends of the U-shaped steel bottom beam 4 are cut into U-shaped openings and fixed between the pads 3 of the side steel canopy assembly 1 on both sides of the roadway and the stops of the U-shaped steel bottom beam 4, so that the U-shaped steel bottom beam 4 and the side steel canopy assembly 1 form a U-shaped interlocking shape. Furthermore, the stops restrict the upward movement of the U-shaped steel bottom beam 4, further ensuring the stability of the side steel canopy assembly 1 and the floor heave control capability. This invention features stable structure, safety and reliability, and good floor heave control effect.

[0044] The working principle and usage process of this utility model are as follows: When the device is needed to support a high-pressure soft rock roadway, the entire assembly consisting of the side steel canopy component 1, the U-shaped steel bottom beam 4, the steel canopy roof 6, and the shims 3 is placed inside the roadway to support it. When it is necessary to obtain test data on the pressure exerted on the side steel canopy component 1 during the support operation, the motors 24 in the two pressure detection mechanisms 2 are activated. The two motors 24 drive the two lead screws 26 to rotate, which in turn drives the two moving plates 27 to insert the various cones 29 into the side of the roadway. Then, the pressure sensor 2... 8. Pressure testing is sufficient. Spring pin 23 connects the fixing sleeve 21 and the mounting block 22, and limit plate 25 limits movement. When workers walk inside the device, the rubber block 52 and damper 53 in the buffer and lighting mechanism 5 buffer the impact of walking, thus preventing the U-shaped steel bottom beam 4 from being adversely affected. The anti-slip layer 56 on the connecting plate 51 prevents workers from slipping. When needed, workers can turn on the lighting lamp 54 to provide auxiliary lighting for the surroundings. The transparent shell 55 protects the lighting lamp 54.

[0045] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A support test device for soft rock tunnels under high ground pressure, characterized in that, include: Two side steel canopy components (1) are respectively installed on both sides of the inner wall of the tunnel; The steel canopy roof (6) is set on the top of the inner wall of the tunnel, and its two ends are connected to two side steel canopy components (1) respectively; U-shaped steel bottom beam (4) is set at the bottom of the inner wall of the roadway, and its two ends are connected to two side steel canopy components (1); The pressure testing mechanism (2) is installed on the side steel canopy assembly (1); The buffer and lighting mechanism (5) is located on the upper part of the U-shaped steel bottom beam (4).

2. The support test device for high ground pressure soft rock tunnels according to claim 1, characterized in that: The bottom of the side steel canopy assembly (1) is provided with a pad (3).

3. The support test device for high ground pressure soft rock tunnels according to claim 1, characterized in that, The pressure detection mechanism (2) includes: The fixing sleeve (21) is horizontally set on the side steel canopy assembly (1); A horizontally positioned motor (24) has a mounting block (22) at its bottom, which is mounted inside a fixed sleeve (21) by means of a spring pin (23); The lead screw (26) is connected to the main shaft of the motor (24); A vertically positioned movable plate (27) is threaded onto a lead screw (26) at its bottom; At least one horizontally placed cone (29) is disposed on the movable plate (27), and a pressure sensor (28) is disposed on its tip. The insertion cone (29) can be inserted into the insertion hole on the side steel shed assembly (1), so that the insertion cone (29) can be inserted into the side wall of the roadway with the pressure sensor (28) for pressure detection.

4. The support test device for high ground pressure soft rock tunnels according to claim 3, characterized in that: A limit plate (25) is provided at the end of the lead screw (26).

5. The support test device for high-pressure soft rock tunnels according to claim 1, characterized in that, The buffer and lighting mechanism (5) includes: Rubber blocks (52) are set on the upper part of the U-shaped steel bottom beam (4); The connecting plate (51) is laid flat on the rubber block (52), and its two ends are connected to the U-shaped steel bottom beam (4) through the damper (53); Several lighting lamps (54) are set on both sides of the connecting plate (51).

6. The support test device for a high-pressure soft rock tunnel according to claim 5, characterized in that: The lighting lamp (54) is provided with a transparent shell (55) on the outside.

7. The support test device for high ground pressure soft rock tunnels according to claim 5, characterized in that: The upper part of the connecting plate (51) is provided with an anti-slip layer (56).

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