Gob-side entry retaining method

A technology for retaining and retaining roadways and roadways, which is applied in earthwork drilling, ground mining, shaft lining, etc., which can solve the problems of large amount of roadway reuse and secondary repair work, and easy damage and deformation of concrete walls. The complexity of the process, ensuring the ventilation of the roadway, and the effect of a large amount of engineering

Inactive Publication Date: 2017-08-22
TIANDI SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the existing gob-side retaining method and the problems that the concrete wall is easily damaged and deformed, and the roadway requires a large amount of secondary repair work when the roadway is reused

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  • Gob-side entry retaining method

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Embodiment Construction

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically conn...

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Abstract

The present invention relates to the field of coal mining technology, in particular to a method for retaining roadways along gobs, comprising the following steps: S1, excavating a first roadway on the side adjacent to the second mining face on the first mining face, The roadway is supported, and at the same time, the side of the first roadway close to the second mining face is prefabricated; S2, before the mining of the first mining face, the roof of the first mining face is prefabricated with cracks; S3, at the Excavate the second roadway on the side near the side of the roadway on the secondary mining face, and support the second roadway. The invention solves the problems of high pressure, high stress and serious deformation of the concrete wall in the commonly used gob-side retaining roadway. During the excavation of the previous working face, the concrete wall of the gob-side retaining is prefabricated in advance, and the process during the mining of the working face is reduced. The degree of complexity increases the recovery speed of the previous working face, and the secondary roadway of gobside retaining often needs to be repaired, which requires a large amount of work and high difficulty. The present invention is a new roadway for the next working face, so there is no need for roadway repair.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a method for retaining roadways along gobs. Background technique [0002] At present, it is difficult to mine thick coal seams with large mining heights, and the phenomenon of mine pressure is severe. The gob-side entry technology belongs to the mining technology without coal pillars, which can effectively solve the problem of ventilation in the coal mining face. The commonly used method of gob-side entry retention is in the coal face Prefabricated concrete walls are carried out during the mining period. After the commonly used gob-side entry is distributed, the pressure of the roadway is high, the stress is high, and the deformation of the concrete wall is serious. It is complex, with many procedures and slow speed, which affects the normal mining of the coal mining face, and the advancing speed of the coal mining face is slow. It needs to be repaired again, and the enginee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18E21D20/00E21D11/04
CPCE21C41/18E21D11/04E21D20/00
Inventor 吕华文付书俊何杰程蓬杨小军崔千里杨晓成冯彦军
Owner TIANDI SCI & TECH CO LTD
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