Full coal roadway safe and speedy drivage supporting method

Abstract

The invention provides a full coal roadway safe and speedy drivage supporting method which solves the problem that the existing supporting form and parameter selection are unreasonable. According to the method, a top plate, two side walls and a bottom plate of a roadway are supported and reinforced respectively, wherein the top plate is supported through a combination of anchor rods, iron wire gauze, W-shaped steel bands and anchor cables, the two side walls are supported through a combination of anchor rods and supporting nets, and the bottom plate is reinforced by pouring of concrete layers. According to the method, the reasonable selection and standard design of anchor supporting parameters are researched from the aspect of mutual matching between the anchor rods and matched materials of the anchor rods, between the anchor rods and the anchor rod supporting parameters and between the anchor rod supporting parameters and the roadway mine pressure behavior, and therefore the method lays the good foundation for fully improving the quality of anchor rod supporting and achieving the high yield and high efficiency of mines. According to the method, various supporting and combined supporting forms are adopted, especially the combined supporting of the anchor rods, the anchor cables, the steel bands and the nets is adopted, deformation of surrounding rock is effectively controlled, supporting strength is appropriate and materials are not wasted.

Description

technical field [0001] The invention relates to a roadway support method in coal mines, in particular to a safe and rapid tunneling support method for an all-coal roadway. Background technique [0002] In recent years, the complete set of equipment and bolting technology for coal roadway excavation in my country has been basically formed, which has led to the rapid development of coal roadway bolting design technology, tunneling equipment and its supporting equipment. However, there are still the following problems at present: the form of bolt support and the selection of parameters are unreasonable, resulting in two extremes: one is that the support strength is too high, which not only wastes support materials, but also affects the speed of excavation; the other is the support strength If it is not enough, the deformation of the surrounding rock cannot be effectively controlled, and a roof fall accident will occur. Contents of the invention [0003] The purpose of the pr...

AI Technical Summary

Problems solved by technology

However, there are still the following problems at present: the form of bolt support and the selection of parameters are unreasonable, resulting in two extremes: one is that the support strength is too high, which not only wastes support materials, but also affects the speed of excavation; the other is the support strength Insufficient, unable to effectively control the deformation of the surrounding rock, resulting in roof fall accidents

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