A stope coal wall slab control device

Abstract

The invention provides a stope coal wall caving control device. The stope coal wall caving control device is characterized in that a hydraulic support device and a caving protection device are integrally arranged on the same support base, a hydraulic support top plate and a hydraulic support auxiliary plate of the hydraulic support device are arranged on the top of a coal seam, the caving protection device is arranged on a stope coal wall, and support protection angles of a caving protection plate of the caving protection device can be adjusted. The stope coal wall caving control device has the advantages that the hydraulic support device and the caving protection device are integrally arranged, the support protection angles of the caving protection plate can be adjusted, and accordingly the caving protection fastening property and safety can be greatly improved; the stope coal wall caving control device is provided with angle adjusting teeth, accordingly, angles of the caving protection plate can be conveniently adjusted, and the caving protection plate can be conveniently mounted; anchor rods are arranged on the protection plate, accordingly, the coal wall caving fastening property can be effectively improved under joint effects of the protection plate and the anchor rods, and roof collapse can be prevented; positioning protrusions are arranged on anchor rod holes, and accordingly the supporting convenience and accuracy of the anchor rods can be improved.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a stope coal wall spall control device, which belongs to the technical field of coal mining safety protection. Background technique [0002] The fully-mechanized top-coal caving technology developed in my country has become an effective way to solve the technical problems of thick coal seam mining methods and difficult-to-mine thick coal seams in my country, and has achieved remarkable technical and economic effects. However, it is still not easy to achieve high yield and high efficiency in soft coal fully mechanized caving mining. The frequent trouble is that the end face roof of the working face is unstable, and the coal wall of the stope will lead to the expansion of the unsupported space in front of the frame, which will cause the end face roof (top coal) to leak. Therefore, it is of great significance to study the prevention and control of coal wall slabs in stopes of so...

AI Technical Summary

Problems solved by technology

However, it is still not easy to achieve high yield and high efficiency in soft coal fully mechanized caving mining. The frequent trouble is that the end face roof of the working face is unstable, and the coal wall of the stope will lead to the expansion of the unsupported space in front of the frame, which will cause the end face roof (top coal) to leak. It affects the advancing speed and normal circulation of the working face, so it is of great significance to study the prevention and control of coal wall slabs in the soft thick coal seam stope

However, the current coal wall side protection and control devices in the stope generally have a relatively simple structure. For example, only a single hydraulic support or anchor rod is used to protect the coal side. If they are separated from each other, in the process of mining, it is often prone to untimely protection, resulting in the danger of roof collapse, which greatly threatens the safety of stope workers. The device combining side protection and fastening plays an extremely important role in controlling the side of the coal wall in the stope

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