CN-116906096-B - Mining coal roadway surrounding rock deformation monitoring and supporting reinforcing device

Abstract

The invention discloses a mining coal roadway surrounding rock deformation monitoring and supporting reinforcement device which comprises a hollow anchor rod, a tray, a nut, a first support piece, a second support piece and a second support piece, wherein the hollow anchor rod is anchored in a coal roadway surrounding edge, the tray is sleeved outside the hollow anchor rod, the nut is connected to the outside of the hollow anchor rod in a threaded mode and used for locking the tray, the first support piece is obliquely supported below the tray and driven by a first hydraulic cylinder so as to adjust an inclination angle to keep a certain supporting force, the driving action of the first hydraulic cylinder can be recorded, the second support piece is obliquely supported below the tray and driven by a second hydraulic cylinder so as to adjust an inclination angle to keep a certain supporting force, and the driving action of the second hydraulic cylinder can be recorded.

Inventors

• SONG YIMENG
• YANG GANG
• SHI BAO
• BAO RUOYU
• LIU YI
• Di shuai
• LUN JIAYUN

Assignees

• 应急管理部信息研究院

Dates

Publication Date

20260512

Application Date

20230724

Claims (7)

1. 1. The mining coal roadway surrounding rock deformation monitoring and supporting and reinforcing device is characterized by comprising the following components: a hollow anchor rod (1) comprising an anchoring portion anchored into a coal roadway surrounding edge and an extension portion connected below the anchoring portion and extending out of the coal roadway surrounding edge; A tray (2) sleeved outside the hollow anchor rod (1); A nut (5) screwed to the outside of the hollow anchor rod (1) for locking the tray (2); a first support member which is inclined and supported below the tray (2) and is driven by a first hydraulic cylinder (13) to adjust an inclination angle so as to maintain a certain supporting force, wherein the driving action of the first hydraulic cylinder (13) can be recorded; The second supporting piece is obliquely supported below the tray (2) and is driven by a second hydraulic cylinder so as to adjust the inclination angle to maintain a certain supporting force, and the driving action of the second hydraulic cylinder can be recorded; According to the driving action of the first hydraulic cylinder (13) and the driving action of the second hydraulic cylinder, the monitoring of the deformation of the coal roadway periphery can be realized, and the reinforcement of the hollow anchor rod is further guided; The bottom of the hollow anchor rod (1) is driven by a stirring assembly (8) so as to actively assist the coal roadway surrounding edge to release stress by using an anchoring part; The toggle assembly (8) comprises: the enclosing shield is fixed on the coal roadway bottom plate and sleeved outside the hollow anchor rod (1); a sleeve (81) screwed to the outside of the hollow anchor rod (1); a clamping cylinder (82) fixed on one side of the sleeve (81), a plurality of inserting rods (83) are arranged in the clamping cylinder (82) in a radial sliding way, a return spring (84) is connected between the inserting rods (83) and the clamping cylinder (82), and The telescopic rod (85) is arranged on the enclosure, a slot (87) corresponding to the inserting rod (83) is formed in the end part of the telescopic rod (85), and an electromagnetic block is embedded in the slot (87); The movable seat (86) is further movably arranged on the enclosure, and the movable seat (86) is fixedly connected with the telescopic rod (85).
2. 2. The mining coal roadway surrounding rock deformation monitoring and supporting and reinforcing device according to claim 1, wherein the length of the extension portion is 1.5-3 times that of the anchoring portion.
3. 3. The mining coal roadway surrounding rock deformation monitoring and supporting and reinforcing device according to claim 1, wherein an outer connecting pipe (6) is arranged on one side of the extension portion, the outer connecting pipe (6) is connected with an external high-pressure injection component (7), and the high-pressure injection component (7) can provide high-pressure liquid or gas.
4. 4. The mining coal roadway surrounding rock deformation monitoring and supporting and reinforcing device according to claim 1, wherein the first supporting piece and the second supporting piece are identical in structure and comprise the following components: a clamping groove (10) which is clamped below a clamping seat (9), wherein the clamping seat (9) is fixed below the tray (2); the support rod (11) is hinged to the clamping groove (10), and the other end of the support rod (11) is hinged to the sliding seat (12); and a strain gauge provided on the support rod (11).
5. 5. The mining coal roadway surrounding rock deformation monitoring and supporting and reinforcing device according to claim 3, wherein in an initial stage, the first hydraulic cylinder (13) and the second hydraulic cylinder can be subjected to telescopic adjustment according to respective strain gauge feedback, so that the first supporting piece and the second supporting piece both maintain initial supporting force, and when the absolute value of the difference value of the telescopic amounts of the first hydraulic cylinder (13) and the second hydraulic cylinder is larger than a first threshold value, the high-pressure injection component (7) is used for providing high-pressure liquid or gas into the hollow anchor rod.
6. 6. The mining coal roadway surrounding rock deformation monitoring and supporting and reinforcing device according to claim 5, wherein the first supporting piece and the second supporting piece are removed when the strain gauge detects that the force change rate is lower than a second threshold value in a later stage.
7. 7. The mining coal roadway surrounding rock deformation monitoring and supporting and reinforcing device according to claim 5 is characterized in that in the later stage, when the strain gauge detects that the force variation rate is lower than a second threshold value, the extension part is cut off from the upper position of the external connecting pipe (6), and grouting and reinforcing are carried out on the hollow anchor rod (1).

Description

Mining coal roadway surrounding rock deformation monitoring and supporting reinforcing device Technical Field The invention relates to the technical field of coal roadway support, in particular to a mining coal roadway surrounding rock deformation monitoring and support reinforcing device. Background Surrounding rock deformation is a ubiquitous phenomenon in the coal mine roadway mining process. Due to the influence of factors such as coal seam occurrence conditions, geological structures and the like, the stability of surrounding rocks of coal mine roadways is often damaged to a certain extent. In order to ensure safe production of the mine, deformation of surrounding rock must be monitored, and corresponding supporting and reinforcing measures are adopted. In addition, in the supporting and reinforcing process, a supporting principle is often followed, that is, supporting measures are only carried out once in one mining period. However, due to the influence of different geological conditions and different roadway images, one-time support may not meet the stability requirements of roadway surrounding rocks. In particular in roadways where mining effects are large, deformation of surrounding rock may be more pronounced. In order to cope with the situation, a transitional supporting measure is often needed to improve the stability of the roadway and waste. Therefore, it is necessary to provide a mining coal roadway surrounding rock deformation monitoring and supporting and reinforcing device to solve the problems in the prior art. Disclosure of Invention In order to achieve the purpose, the invention provides the following technical scheme that the mining coal roadway surrounding rock deformation monitoring and supporting and reinforcing device comprises: A hollow anchor rod comprising an anchoring portion and an extension portion, wherein the anchoring portion is anchored into a coal roadway surrounding edge, and the extension portion is connected below the anchoring portion and extends out of the coal roadway surrounding edge; a tray sleeved outside the hollow anchor rod; A nut screw-coupled to an outside of the hollow anchor rod for locking the tray; The first supporting piece is obliquely supported below the tray and is driven by a first hydraulic cylinder so as to adjust the inclination angle to maintain a certain supporting force, and the driving action of the first hydraulic cylinder can be recorded; The second supporting piece is obliquely supported below the tray and is driven by a second hydraulic cylinder so as to adjust the inclination angle to maintain a certain supporting force, and the driving action of the second hydraulic cylinder can be recorded; According to the driving action of the first hydraulic cylinder and the driving action of the second hydraulic cylinder, the deformation monitoring of the coal roadway surrounding can be realized, and the reinforcement of the hollow anchor rod is further guided. Further, preferably, the length of the extension portion is 1.5 to 3 times the length of the anchoring portion. Further, preferably, an extension is provided on one side of the extension, the extension being connected to an external high pressure injection assembly capable of providing a high pressure liquid or gas. Further, preferably, the bottom of the hollow anchor rod is driven by the stirring assembly, and the anchoring part is used for actively assisting the coal roadway surrounding edge to release stress. Further, preferably, the toggle assembly includes: the enclosing shield is fixed on the coal roadway bottom plate and sleeved outside the hollow anchor rod; a sleeve screw-connected to the outside of the hollow anchor rod; A clamping cylinder fixed on one side of the sleeve, a plurality of inserting rods arranged in the clamping cylinder in a radial sliding way, a return spring connected between the inserting rods and the clamping cylinder, and The telescopic rod is arranged on the enclosing board, a slot corresponding to the inserting rod is formed in the end portion of the telescopic rod, and an electromagnetic block is embedded in the slot. Further, preferably, a movable seat is further movably arranged on the enclosure, and the movable seat is fixedly connected with the telescopic rod. Further, preferably, the first support and the second support are identical in structure, and each includes: The clamping groove is clamped below the clamping seat, and the clamping seat is fixed below the tray; A supporting rod hinged on the clamping groove, a sliding seat hinged on the other end of the supporting rod, and And the strain gauge is arranged on the supporting rod. Further, preferably, in the initial stage, the first hydraulic cylinder and the second hydraulic cylinder can perform telescopic adjustment according to respective strain gauge feedback, so that the first supporting piece and the second supporting piece both maintain initial supporting force, and when the absolute value of