Construction method of lane filling retained roadway

Abstract

The invention discloses a construction method of a lane filling retained roadway and belongs to the technical field of coal mining construction processes. The construction method of the lane filling retained roadway can modify a transportation roadway of a former working face with low construction cost rapidly and easily and reserve the transportation roadway of the former working face as an air return roadway of a next working face. The construction method comprises the following steps that waste mine materials exhausted from a mine are manufactured into concrete block materials, then cleaning and foundation processing are carried out on a roadway bottom board lagging 1-2 m behind an outlet below the working face according to the coal mining progress and the mining step pitch, a filling body not thinner than 50 cm is laid in a gradual extending mode in the mining direction, a pressure bearing bottom clearance is preserved between the filling body and a roadway roof, then the preserved pressure bearing bottom clearance is filled with elastic cushion materials, the lane filling retained roadway work of one step pitch is finished after the pressure bearing bottom clearance is sealed, and the steps a-d are carried out repeatedly according to the mining step pitch until the whole lane filling retained roadway work is finished.

Description

technical field [0001] The invention relates to a construction method, in particular to a construction method for roadside filling and retaining roadway, and belongs to the technical field of coal mining construction technology. Background technique [0002] In the mining process of high-inclination coal seams, the coal seam is divided into multiple levels according to a certain elevation along the inclination direction of the coal seam; within the horizontal range, it is divided into several mining areas along the direction of the coal seam; in the mining area, the coal seam is divided along the inclination direction It consists of multiple sections, and each section forms two mining working faces, that is, two wings. In order to ensure safe and effective mining of coal seams in each working face, and to meet the needs of ventilation, pedestrians, material transportation, coal transportation, and drainage, the working face Two lanes must be arranged, that is, the return air...

AI Technical Summary

Problems solved by technology

However, in the mining of two working faces in the upper and lower sections of the same coal seam, the four roadways mentioned above must be arranged, that is, each working face needs to be arranged with one upper and lower roadways, a total of two roadways can be mined, and reasonable section protection coal pillars should be reserved. , so that the coal resources are wasted and the roadway excavation engineering quantity is increased

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