Anchor cable shed type supporting method

Abstract

The invention discloses an anchor cable shed type supporting method, which relates to the field of coal mining supporting methods, and comprises the following steps of: cutting out an I-shaped steel long beam, and welding a vertical surface supporting plate and an inclined surface steel plate at two end parts of the bottom surface of the I-shaped steel long beam; a cable-stayed anchor cable hole and a cable-stayed anchor cable via hole penetrate through two end parts of the I-shaped steel long beam, and a vertical anchor cable hole penetrates through the middle part of the I-shaped steel End fixing rib plates and triangular side supporting plates are welded on two sides, and a middle fixing rib plate is welded in the middle; laying a reinforcing mesh on the top plate and arranging a top anchor rod; i-shaped steel long beams are arranged in the forward direction, vertical anchor cables and cable-stayed anchor cables are arranged and fixed, reinforcing meshes are laid on the side portions of the roadway walls, and side protection anchor rods are arranged in a driving mode. According to the anchor cable shed type supporting method, the problems existing in a traditional common supporting method are solved, the large-span roadway supporting connotation under the special condition is enriched, and the anchor cable shed type supporting method has value and significance for exploring the theory and practice of roadway supporting under the special condition; the method is proved to be effective for supporting the large-span roadway under special conditions by practice.

Description

technical field [0001] The invention relates to the field of coal mining support methods, in particular to an anchor cable shed type support method. Background technique [0002] Taking Lane 5207 of the C5# layer of Tongfa Dongzhouyao Mine in Shanxi Province as an example, the Tongfa Dongzhouyao Mine in Shanxi Province is a mine of 10 million tons, with a large cross-section of the roadway and complex geological conditions. Influenced by the stress concentration area and the water spraying area, the crushing pressure of the roof of the tunnel roadway is large, and the deformation and sinking of the leading section of the fully mechanized mining face along the trough is serious. The coal thickness is about 6m; the gravel-bearing coarse sandstone roof in the upper part of the coal seam has an average thickness of 24.51 meters. The bolt mesh steel belt is designed to be supported by the anchor cable, and the φ22×2400mm bolt is used first; then the φ21.8×8300mm single-point anc...

AI Technical Summary

Problems solved by technology

[0010] The present invention solves the problem that the traditional commonly used support method encounters soft and broken layered rock formations, joint fissure development areas, faults, collapse columns, igneous rock intrusion areas, scour zones, water spray areas, pressure-affected areas, roadway surrounding rock deformation and subsidence. Under special conditions such as areas of stress concentration, roadway intersections, chambers, and roadway openings, there are problems in various aspects such as single method, one-sided concept, insufficient strength, poor adaptability, poor performance, complex process, heavy workload, and high cost. Problems and Disadvantages

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