A support test device and test method for high ground pressure soft rock tunnel

Abstract

The present invention discloses a support test device and test method for a high ground pressure soft rock tunnel, comprising: two side steel shed assemblies, respectively arranged on both sides of the inner wall of the tunnel; a steel shed roof, arranged on the top of the inner wall of the tunnel, and its two ends are respectively connected to the two side steel shed assemblies; a U-shaped steel bottom beam, arranged at the bottom of the inner wall of the tunnel, and its two ends are respectively connected to the two side steel shed assemblies; a pressure detection mechanism, arranged on the side steel shed assemblies. The present invention also discloses a support test method for a high ground pressure soft rock tunnel, characterized in that it comprises the following steps: S1, placing the whole composed of the side steel shed assembly, the U-shaped steel bottom beam, the steel shed roof and the pad iron in the tunnel; S2, when it is necessary to obtain the test data of the pressure on the side steel shed assembly during the support work, start the motor in the pressure detection mechanism, the motor drives the screw to rotate, and then drives the cone to be inserted into the side of the tunnel through the movable plate, and then the pressure is detected by the pressure sensor.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support equipment, and in particular to a support test device and a test method for a high ground pressure soft rock tunnel. Background Art

[0002] A tunnel is a passage excavated for mining hoisting, transportation, ventilation, drainage, power supply, etc. The cross-section of a tunnel is mostly arched, trapezoidal or rectangular, and circular, elliptical or horseshoe-shaped if the surrounding rock is soft.

[0003] Chinese patent application No. 202021246768.4 discloses a steel shed for supporting soft rock tunnels with high ground pressure, which solves the problem that the supporting structure for soft rock tunnels with high ground pressure is unstable and prone to bottom drum; technical solution: the two bottom ends of the steel shed top are respectively connected to steel shed legs through U-shaped cables, and the bottom ends of the steel shed legs are fixedly connected to pads, and the steel shed legs are fixedly provided with U-shaped steel blocks at the connection with the tunnel floor, and the U-shaped steel bottom beam is fixed between the pads and the U-shaped steel blocks on both sides of the tunnel to form a U-shaped steel shed support as a whole; the present invention has the characteristics of stable structure, safety and reliability, and good bottom drum control effect.

[0004] 1. The above-mentioned disclosed patent has the problem that it is inconvenient for the staff to detect the pressure on the steel shed, which makes it inconvenient for the staff to judge the life of the steel shed, thereby reducing the working capacity of the steel shed; 2. The above-mentioned disclosed patent has the problem that the impact caused by the staff's walking can easily cause adverse effects on the steel shed and it is inconvenient to provide auxiliary lighting when needed, thereby reducing the practicality of the steel shed. Summary of the invention

[0005] In view of the above technical problems, the present invention provides a support test device and a test method for a high ground pressure soft rock tunnel.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows: A support test device for a high ground pressure soft rock tunnel, comprising: Two side steel shed components are respectively arranged on both sides of the inner wall of the lane; The steel shed roof is arranged on the top of the inner wall of the laneway, and its two ends are respectively connected to the two side steel shed assemblies; The U-shaped steel bottom beam is arranged at the bottom of the inner wall of the tunnel, and its two ends are respectively connected to the two side steel shed components; A pressure detection mechanism is arranged on the side steel shed assembly; The buffer and lighting mechanism is arranged on the upper part of the U-shaped steel bottom beam.

[0007] A pad iron is arranged at the bottom of the side steel shed assembly.

[0008] The pressure detection mechanism comprises: A fixing sleeve is horizontally arranged on the side steel shed assembly; The motor is arranged horizontally, and a mounting block is arranged at the bottom thereof, and the mounting block is installed in the fixing sleeve through a spring pin; The lead screw is connected with the main shaft of the motor; A vertically arranged movable plate, the bottom thread of which is mounted on a screw rod; At least one transversely placed cone is arranged on the movable plate, and a pressure sensor is arranged on the tip of the cone; Among them, the cone can be inserted into the socket on the side steel shed assembly, so that the cone can be inserted into the side wall of the tunnel with the pressure sensor to perform pressure detection.

[0009] A limiting plate is arranged at the end of the screw rod.

[0010] The buffer and lighting mechanism comprises: The rubber block is arranged on the upper part of the U-shaped steel bottom beam; 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; A plurality of lighting lamps are arranged on both sides of the connecting plate.

[0011] A transparent shell is arranged outside the lighting lamp.

[0012] An anti-slip layer is arranged on the upper part of the connecting plate.

[0013] The present invention also provides a support test method for a high ground pressure soft rock tunnel, comprising the following steps: S1. Place the whole consisting of the side steel shed assembly, U-shaped steel bottom beam, steel shed roof and pad iron in the tunnel to support the tunnel; S2. When it is necessary to obtain the test data of the pressure on the inner steel shed components during the support work, start the motor in the pressure detection mechanism, the motor drives the screw to rotate, and then drives the cone to be inserted into the side of the tunnel through the moving plate, and then the pressure is detected by the pressure sensor.

[0014] The beneficial effects of the present invention are: 1. The present invention sets a pressure detection mechanism so that the staff can detect the pressure of the side steel shed components through various pressure sensors when necessary, thereby facilitating the staff to obtain test data of the device during support work, and further facilitating the staff to judge the life of the device, etc., and can assist in fixing the position of the device through various cones, thereby improving the working capacity of the device.

[0015] 2. The present invention provides a buffer and lighting mechanism so that the device can buffer the impact caused by the staff walking, thereby reducing the possibility of the U-shaped steel bottom beam being adversely affected, and the device can provide auxiliary lighting through the lighting lamp when necessary, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of a pressure detection mechanism; Figure 4 It is a structural diagram of the buffer and lighting mechanism.

[0017] In the figure: 1. Side steel shed assembly; 2. Pressure detection mechanism; 21. Fixed sleeve; 22. Mounting block; 23. Spring pin; 24. Motor; 25. Limit plate; 26. Screw rod; 27. Moving plate; 28. Pressure sensor; 29. ​​Insert cone; 3. Washer; 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 shed roof. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0019] like Figures 1 to 4As shown, a support test device for a high ground pressure soft rock tunnel comprises: two side steel shed components 1, respectively arranged on both sides of the inner wall of the tunnel; a steel shed top 6, arranged on the top of the inner wall of the tunnel, and its two ends are respectively connected to the two side steel shed components 1; a U-shaped steel bottom beam 4, arranged at the bottom of the inner wall of the tunnel, and its two ends are respectively connected to the two side steel shed components 1; a pressure detection mechanism 2, arranged on the side steel shed component 1; a buffer and lighting mechanism 5, arranged on the upper part of the U-shaped steel bottom beam 4. A pad iron 3 is arranged at the bottom of the side steel shed component 1. The pressure detection mechanism 2 includes: a fixed sleeve 21, which is horizontally arranged on the side steel shed assembly 1; a horizontally arranged motor 24, whose bottom is provided with a mounting block 22, and the mounting block 22 is installed in the fixed sleeve 21 through a spring pin 23; a screw rod 26, which is connected with the main shaft of the motor 24; a vertically arranged moving plate 27, whose bottom is threadedly installed on the screw rod 26; at least one horizontally placed plug cone 29, which is arranged on the moving plate 27, and a pressure sensor 28 is arranged on its tip; wherein the plug cone 29 can be inserted into the plug hole on the side steel shed assembly 1, so that the plug cone 29 can be inserted into the side wall of the lane with the pressure sensor 28 to perform pressure detection. A limit plate 25 is arranged at the end of the screw rod 26. The buffer and lighting mechanism 5 includes: a rubber block 52, which is arranged on the upper part of the U-shaped steel bottom beam 4; a connecting plate 51, which is flat on the rubber block 52, and its two ends are respectively connected to the U-shaped steel bottom beam 4 through a damper 53; and a plurality of lighting lamps 54 are arranged on both sides of the connecting plate 51. A transparent shell 55 is disposed outside the lighting lamp 54. An anti-slip layer 56 is disposed on the upper portion of the connecting plate 51.

[0020] The present invention can detect the pressure on the side steel shed assembly 1 through each pressure sensor 28 when necessary, so that it is convenient for the staff to obtain the test data of the device during the support work, and then it is convenient for the staff to judge the life of the device, etc., and the position of the device can be auxiliary fixed by each cone 29.

[0021] When it is necessary to use the device to support the high ground pressure soft rock tunnel, the whole composed of the side steel shed assembly 1, the U-shaped steel bottom beam 4, the steel shed roof 6 and the pad iron 3 is placed in the tunnel to support the tunnel. When it is necessary to obtain the test data of the pressure on the side steel shed assembly 1 during the support work, the motors 24 in the two pressure detection mechanisms 2 are started, and the two motors 24 drive the two screw rods 26 to rotate, and then drive each cone 29 to be inserted into the side of the tunnel through the two movable plates 27, and then the pressure is detected by the pressure sensor 28. The spring pin 23 plays the role of connecting the fixing sleeve 21 and the mounting block 22, and the limit plate 25 plays the role of limiting.

[0022] The buffer and lighting mechanism 5 can buffer the impact caused by the staff walking, thereby reducing the possibility of the U-shaped steel bottom beam 4 being adversely affected, and the device can provide auxiliary lighting through the lighting lamp 54 when necessary.

[0023] Specifically, the buffer and lighting mechanism 5 further includes an anti-slip layer 56 , and the anti-slip layer 56 is installed between the connecting plate 51 and the two lighting lamps 54 .

[0024] The rubber block 52 and the damper 53 in the buffering and lighting mechanism 5 can buffer the impact caused by walking, thereby preventing the U-shaped steel bottom beam 4 from being adversely affected. The anti-skid layer 56 on the connecting plate 51 prevents the staff from slipping. When necessary, the staff can start the lighting lamp 54 for auxiliary lighting around, and the transparent shell 55 protects the lighting lamp 54.

[0025] The U-shaped steel bottom beam 4 of the present invention is in an inverted arch shape, which can effectively control the ground pressure strength of the tunnel and has a good bottom drum control effect; the two ends of the U-shaped steel bottom beam 4 are cut into a U-shaped mouth shape and fixed between the pads 3 of the side steel shed components 1 on both sides of the tunnel and the blocks of the U-shaped steel bottom beam 4, so that the U-shaped steel bottom beam 4 and the side steel shed components 1 present a U-shaped bite, and a block is provided to limit the upward movement of the U-shaped steel bottom beam 4, which further ensures the stability of the side steel shed components 1 and the bottom drum control ability. The present invention has the characteristics of stable structure, safety and reliability, and good bottom drum control effect.

[0026] The working principle and use process of the present invention are as follows: when the device is needed to support the high ground pressure soft rock tunnel, the whole consisting of the side steel shed assembly 1, the U-shaped steel bottom beam 4, the steel shed roof 6 and the pad iron 3 is placed in the tunnel to support the tunnel. When it is necessary to obtain the test data of the pressure on the side steel shed assembly 1 during the support work, the motors 24 in the two pressure detection mechanisms 2 are started, and the two motors 24 drive the two screw rods 26 to rotate, and then drive each cone 29 to be inserted into the side of the tunnel through the two moving plates 27, and then the pressure sensor 28 is used to detect the pressure of the side steel shed assembly 1. Just detect the pressure, the spring pin 23 plays the role of connecting the fixing sleeve 21 and the mounting block 22, and the limit plate 25 plays the role of limiting; when the staff walks in the device, the rubber block 52 and the damper 53 in the buffer and lighting mechanism 5 can buffer the impact caused by walking, thereby preventing the U-shaped steel bottom beam 4 from being adversely affected, and the anti-skid layer 56 on the connecting plate 51 plays a role in preventing the staff from slipping. When necessary, the staff can start the lighting lamp 54 for auxiliary lighting around, and the transparent shell 55 plays a role in protecting the lighting lamp 54.

[0027] The present invention also provides a support test method for a high ground pressure soft rock tunnel, comprising the following steps: S1, placing the whole consisting of the side steel shed assembly 1, the U-shaped steel bottom beam 4, the steel shed roof 6 and the pad iron 3 in the tunnel, so as to support the tunnel; S2. When it is necessary to obtain the test data of the pressure on the inner steel shed assembly 1 during the support work, start the motor 24 in the pressure detection mechanism, the motor 24 drives the screw rod 26 to rotate, and then drives the insert cone 29 to insert into the side of the tunnel through the movable plate 27, and then the pressure is detected by the pressure sensor 28.

[0028] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

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

2. A support test device for high ground pressure soft rock tunnel according to claim 1, characterized in that: A pad iron (3) is provided at the bottom of the side steel shed assembly (1).

3. A support test device for high ground pressure soft rock tunnel according to claim 1, characterized in that: The pressure detection mechanism (2) comprises: A fixing sleeve (21) is horizontally arranged on the side steel shed assembly (1); A horizontally arranged motor (24) has a mounting block (22) disposed at the bottom thereof, and the mounting block (22) is mounted in the fixing sleeve (21) via a spring pin (23); A screw rod (26) is cooperatively connected to the main shaft of the motor (24); A vertically arranged movable plate (27) with a bottom thread mounted on the screw rod (26); At least one transversely placed cone (29) is disposed on the movable plate (27), and a pressure sensor (28) is disposed on the tip of the cone; The insert cone (29) can be inserted into the corresponding insertion hole on the side steel shed assembly (1), so that the insert cone (29) can be inserted into the side wall of the tunnel with the pressure sensor (28) to perform pressure detection.

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

5. The support test device for high ground pressure soft rock tunnel according to claim 1, characterized in that: The buffer and lighting mechanism (5) comprises: A rubber block (52) is arranged on the upper part of the U-shaped steel bottom beam (4); A 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 dampers (53) respectively; A plurality of lighting lamps (54) are arranged on both sides of the connecting plate (51).

6. A support test device for high ground pressure soft rock tunnel according to claim 5, characterized in that: A transparent shell (55) is arranged outside the lighting lamp (54).

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

8. A support test method for high ground pressure soft rock tunnel, characterized in that: The following steps are involved: S1, placing the whole consisting of the side steel shed assembly (1), the U-shaped steel bottom beam (4), the steel shed roof (6) and the pad iron (3) in the tunnel, thereby supporting the tunnel; S2. When it is necessary to obtain test data of the pressure on the inner steel shed assembly (1) during the support work, the motor (24) in the pressure detection mechanism is started, the motor (24) drives the screw rod (26) to rotate, and then drives the insert cone (29) to be inserted into the side of the tunnel through the movable plate (27), and then the pressure is detected by the pressure sensor (28).

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