A coal mine through-space roadway surrounding rock support control structure

Abstract

The application discloses a coal mine through-air roadway surrounding rock supporting control structure, and relates to the technical field of through-air roadway supporting. The coal mine through-air roadway surrounding rock supporting control structure comprises anchor holes which are arranged in the through-air roadway and configured as a plurality of groups, anchor rods which are installed in the anchor holes, pressure regulating assemblies which are fixed outside the anchor holes and connected with the anchor rods, pressure sensors which are fixed on the pressure regulating assemblies, and control modules which are placed in the through-air roadway and electrically connected with the pressure regulating assemblies and the pressure sensors.

Description

Technical Field

[0001] This invention relates to the field of support technology for tunnels with gas holes, specifically a support and control structure for the surrounding rock of tunnels with gas holes in coal mines. Background Technology

[0002] Crossing through empty roadways is a common occurrence in coal mining. It refers to the mining face or tunneling face passing through existing old roadways within the coal seam or its roof and floor. These old roadways are commonly referred to as empty roadways. Due to the geological strata, crossing through empty roadways may involve passing through, crossing, or drilling through these old roadways. Working through empty roadways carries high risks in coal mining production, thus requiring a series of safety predictions and assessments to understand the ore seam structure, coal seam dip angle, and roof stability, and to predict the necessary safety measures.

[0003] Existing support control structures cannot be adjusted during roadway support, which can easily lead to failure of the support control structure when the roadway rock strata change, affecting safety. Furthermore, the support control structure cannot be actively adjusted, and most of them use elastic structures for pressure relief operations, which can cause changes in support pressure, making the rock strata prone to cracking or reducing support strength.

[0004] To address the above problems, this invention provides a support and control structure for the surrounding rock of coal mine tunnels through which tunnels pass, thereby solving the aforementioned issues. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a support and control structure for surrounding rock in a coal mine goaf, comprising: Anchor holes are configured in multiple locations within the tunnel; Anchor bolts are installed inside the anchor holes; A pressure regulating component is fixed outside the anchor hole and connected to the anchor rod; A pressure sensor is fixed to the pressure regulating assembly; and The control module is placed inside the tunnel and is electrically connected to the pressure regulating component and the pressure sensor.

[0006] Further, preferably, the anchor bolt includes: The anchoring assembly is fixed in the anchoring hole using grout. The free segment is fixed to the anchoring assembly; and The expansion section is fitted onto the free section and is fixedly connected to the pressure regulating assembly.

[0007] Further, preferably, the anchoring assembly includes: Anchor rod; The sliding block is slidably disposed inside the anchor rod along the axial direction of the anchor rod and is driven by the grouting pipe; Multiple main reinforcement components are configured, each slidingly disposed on the anchor rod along the radial direction of the anchor rod, and a spring is provided between the main reinforcement component and the anchor rod, and the main reinforcement component is in contact with the sliding block; Multiple auxiliary reinforcement components are configured and fixed to the outer wall of the anchor rod; and The grouting head is fixed to the anchor rod.

[0008] Further, preferably, the voltage regulating component includes: The fixing plate is fixed to the inner wall of the tunnel. The top plate is fixed to the fixed plate by multiple support columns, and a reinforcing plate is slidably arranged between the multiple support columns; Multiple guide columns are configured and fixed between the fixed plate and the top plate; Multiple pressure regulating cylinders are configured and fixed to the top plate; and The pressure regulating component is slidably mounted on the guide column, with one end fixed to the output end of the pressure regulating cylinder and the other end connected to a hinge plate by a hinge rod.

[0009] Furthermore, preferably, the hinge plate includes at least one fixed plate and two rotating plates. The fixed plate is fixedly connected to the anchor rod, and the two rotating plates are rotatably disposed on both sides of the fixed plate, and the rotating plates are fixed to the hinge rod.

[0010] Furthermore, preferably, one end of an adjusting rod is symmetrically hinged to both sides of the rotating disk, and the other end of the adjusting rod is hinged to the reinforcing plate.

[0011] Furthermore, preferably, the control logic of the control module is as follows: S1. Pressure value setting: Set the initial pressure value for the pressure sensor; S2. The pressure regulating cylinder increases the pressure, causing the anchor bolts to generate pressure and support the tunnel. S3. When the tunnel has been in operation for a long time and the rock strata have deformed, the pressure sensor readings will change. S4. When the pressure sensor value increases, the pressure regulating cylinder reduces the pressure until the value is reset, and the support operation is completed again. S5. When the pressure sensor value decreases, the pressure regulating cylinder increases the pressure until the value is reset, and the support operation is completed again.

[0012] Compared with the prior art, the present invention provides a support and control structure for the surrounding rock of coal mine goaf-crossing roadways, which has the following beneficial effects: In this invention, the pressure regulating component and pressure sensor enable the control module to automatically adjust the device. During initial use, the anchor bolt is fixed in the anchor hole, and then the pressure regulating component is installed on the anchor bolt. Pressure is applied to the anchor bolt through the pressure regulating cylinder to complete the support operation. After the tunnel has been working for a long time and the rock strata have deformed, the pressure sensor value changes. At this time, the control module sends a command to the pressure regulating cylinder through the control logic to adjust the pressure, thereby greatly ensuring the support strength and improving the automation level of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation of a support and control structure for the surrounding rock of a coal mine goaf. Figure 2 This is a schematic diagram of an overall support and control structure for the surrounding rock of a coal mine tunnel. Figure 3 A schematic diagram of an anchoring component for a support and control structure for surrounding rock in a coal mine goaf. Figure 4 A schematic diagram of a pressure regulating component for a coal mine goaf support and control structure; Figure 5 A schematic diagram of the logical framework of a coal mine goaf roadway surrounding rock support control structure; In the diagram: 1. Anchor hole; 2. Anchor rod; 3. Pressure regulating assembly; 4. Pressure sensor; 21. Anchoring assembly; 22. Free section; 23. Expansion section; 211. Anchor rod; 212. Sliding block; 213. Main reinforcement component; 214. Auxiliary reinforcement component; 215. Grouting head; 31. Fixing plate; 32. Top plate; 33. Support column; 34. Guide column; 35. Pressure regulating cylinder; 36. Pressure regulating component; 37. Hinge plate; 38. Adjusting rod. Detailed Implementation

[0014] Reference Figures 1-5 This invention provides a technical solution: a support and control structure for surrounding rock in a coal mine goaf, comprising: Anchor holes 1 are configured in multiple locations within the tunnel; Anchor bolt 2 is installed inside the anchor hole 1; The pressure regulating component 3 is fixed outside the anchor hole 1 and connected to the anchor rod 2; Pressure sensor 4 is fixed on the pressure regulating assembly 3; and The control module is placed inside the tunnel and is electrically connected to the pressure regulating component 3 and the pressure sensor 4.

[0015] In this embodiment, the anchor bolt 2 includes: Anchoring component 21 is fixed in the anchoring hole 1 by grout; Free segment 22, fixed to the anchoring assembly 21; and The expansion section 23 is sleeved on the free section 22 and is fixedly connected to the pressure regulating component 3.

[0016] In a preferred embodiment, the anchoring assembly 21 includes: Anchor rod 211; The sliding block 212 is slidably disposed within the anchor rod 211 along the axial direction of the anchor rod 211 and is driven by the grouting pipe; The main reinforcement component 213 is configured in multiple ways, each of which is slidably disposed on the anchor rod 211 along the radial direction of the anchor rod 211, and a spring is provided between the main reinforcement component 213 and the anchor rod 211. The main reinforcement component 213 is in contact with the sliding block 212. Multiple auxiliary fasteners 214 are configured and fixed to the outer wall of the anchor rod 211; and The grouting head 215 is fixed on the anchor rod 211.

[0017] In other words, the main reinforcement 213 and auxiliary reinforcement 214 on the anchor rod 211 can greatly improve the pull-out resistance of the anchor assembly 21 in the grout, thereby greatly improving the stability of the anchor rod 2.

[0018] In this embodiment, the voltage regulating component 3 includes: Fixed plate 31 is fixed to the inner wall of the tunnel; The top plate 32 is fixed to the fixed plate 31 by multiple support columns 33, and a reinforcing plate is slidably arranged between the multiple support columns 33; Multiple guide columns 34 are configured and fixed between the fixing plate 31 and the top plate 32; Multiple pressure regulating cylinders 35 are configured and fixed on the top plate 32; and The pressure regulating component 36 is slidably disposed on the guide post 34, with one end fixed to the output end of the pressure regulating cylinder 35, and the other end connected to the hinge plate 37 by a hinge rod.

[0019] In a preferred embodiment, the hinge plate 37 includes at least one fixed plate and two rotating plates. The fixed plate is fixedly connected to the anchor rod 2, and the two rotating plates are rotatably disposed on both sides of the fixed plate, and the rotating plates are fixed to the hinge rod.

[0020] In other words, the pressure regulating component 36 is connected to the anchor rod 2 via the hinge plate 37, which can greatly prevent the anchor rod from damaging the pressure regulating cylinder 35 when it moves with the rock strata.

[0021] In a preferred embodiment, one end of an adjusting rod 38 is symmetrically hinged to both sides of the rotating disk, and the other end of the adjusting rod 38 is hinged to the reinforcing plate.

[0022] It should be noted that the adjusting rod 38 is equipped with a spring, which is initially in a contracted state. When the anchor rod 2 moves radially, the adjusting rod 38 can provide radial support force to the anchor rod 2, thereby further improving the stability of the anchor rod 2.

[0023] In a preferred embodiment, the control logic of the control module is as follows: S1. Pressure value setting: Set the initial pressure value for pressure sensor 4; S2. Pressure regulating cylinder 35 increases pressure, causing anchor bolt 2 to generate pressure and support the tunnel. S3. When the tunnel has been in operation for a long time and the rock strata have deformed, the pressure sensor 4 value will change. S4. When the value of pressure sensor 4 increases, the pressure regulating cylinder 35 reduces the pressure until the value is reset, and the support operation is completed again. S5. When the value of pressure sensor 4 decreases, pressure regulating cylinder 35 increases the pressure until the value is reset, and the support operation is completed again.

[0024] Specifically, firstly, the anchor bolt 2 is fixed in the anchor hole 1. Then, the pressure regulating component 3 is installed on the anchor bolt 2, and pressure is applied to the anchor bolt 2 through the pressure regulating cylinder 35 to complete the support operation. When the tunnel has been working for a long time and the rock strata have deformed, the value of the pressure sensor 4 changes. At this time, the control module sends a command to the pressure regulating cylinder 35 through the control logic to adjust the pressure, which greatly ensures the support strength and improves the automation level of the device.

[0025] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A support and control structure for surrounding rock in a coal mine goaf, characterized in that: include: Anchor holes (1) are configured in multiple locations within the tunnel; Anchor bolt (2) is installed in the anchor hole (1); The pressure regulating component (3) is fixed outside the anchor hole (1) and connected to the anchor rod (2); Pressure sensor (4) is fixed on the pressure regulating assembly (3); as well as The control module is placed inside the tunnel and is electrically connected to the pressure regulating component (3) and the pressure sensor (4); The voltage regulating component (3) includes: A fixing plate (31) is fixed to the inner wall of the tunnel; The top plate (32) is fixed to the fixed plate (31) by multiple support columns (33), and a reinforcing plate is slidably arranged between the multiple support columns (33); Guide columns (34) are configured in multiples and fixed between the fixed plate (31) and the top plate (32); Multiple pressure regulating cylinders (35) are configured and fixed on the top plate (32); and The pressure regulating component (36) is slidably disposed on the guide column (34), and one end of it is fixed to the output end of the pressure regulating cylinder (35), while the other end is connected to the hinge plate (37) by a hinge rod. The hinge plate (37) includes a fixed plate and two rotating plates. The fixed plate is fixedly connected to the anchor rod (2). The two rotating plates are rotatably arranged on both sides of the fixed plate, and the rotating plates are fixed to the hinge rod. One end of an adjusting rod (38) is symmetrically hinged to both sides of the rotating disk, and the other end of the adjusting rod (38) is hinged to the reinforcing plate. The anchor bolt (2) includes: The anchoring assembly (21) is fixed in the anchoring hole (1) by grouting. The free segment (22) is fixed to the anchoring assembly (21); The expansion section (23) is sleeved on the free section (22) and fixedly connected to the pressure regulating assembly (3); The anchoring assembly (21) includes: Anchor rod (211); The sliding block (212) is slidably disposed within the anchor rod (211) along the axial direction of the anchor rod (211) and is driven by the grouting pipe; The main reinforcement (213) is configured in multiple ways, each of which is radially slidably disposed on the anchor rod (211) and a spring is provided between it and the anchor rod (211), and the main reinforcement (213) is in contact with the sliding block (212). Multiple auxiliary fasteners (214) are configured to be fixed to the outer wall of the anchor rod (211); The grouting head (215) is fixed on the anchor rod (211).

2. The support and control structure for surrounding rock in a coal mine goaf as described in claim 1, characterized in that: The control logic of the control module is as follows: S1. Pressure value setting: Set the initial pressure value for the pressure sensor (4); S2. The pressure regulating cylinder (35) increases the pressure, so that the anchor bolt (2) generates pressure to support the tunnel; S3. When the tunnel has been working for a long time and the rock strata have deformed, the pressure sensor (4) value changes; S4. When the value of the pressure sensor (4) increases, the pressure regulating cylinder (35) reduces the pressure until the value is reset, and the support operation is completed again. S5. When the value of the pressure sensor (4) decreases, the pressure regulating cylinder (35) is pressurized until the value is reset, and the support operation is completed again.

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