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Non-pillar mining roadway sidewall closing device and construction method thereof

A technology without coal pillars and road gangs, applied in mining equipment, mining equipment, earthwork drilling, etc., can solve the problems of poor material performance, poor sealing effect, time-consuming and labor-intensive, etc., to achieve strong overall plasticity, improve labor efficiency, reduce cost effect

Inactive Publication Date: 2017-11-24
SHAANXI COAL & CHEM TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a coal-pillarless mining roadside sealing device and its construction method to solve the problems of time-consuming and labor-intensive construction, poor sealing effect and poor material performance in the prior art. defect

Method used

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  • Non-pillar mining roadway sidewall closing device and construction method thereof
  • Non-pillar mining roadway sidewall closing device and construction method thereof

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Embodiment Construction

[0024] see figure 1 and figure 2 , the invention discloses a coal pillar-free mining roadside sealing device, which includes a plurality of gangue retaining pillars 3 arranged at intervals. The gangue-retaining pillar 3 is provided with a gangue-retaining net 1 on the side close to the goaf 10, and a flexible cloth 2 is attached and fixed on the gangue-retaining net 1 through a cable tie 5, and the upper end of the flexible cloth 2 passes through the gangue-retaining net 1. The column 3 and the upper steel beam 4 are fixed with the top plate along the groove, and the lower end of the flexible cloth 2 is fixed with the bottom plate along the groove through the gangue retaining column 3 and the lower steel belt 9 .

[0025] One side of the flexible cloth 2 faces the goaf 10 , and the surface of the gangue retaining net 1 is sprayed with a closed flexible material 8 by a spraying machine 6 and a slurry delivery pipe 7 .

[0026] The airtight flexible material 8 is an inorganic...

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Abstract

The invention discloses a non-pillar mining roadway sidewall closing device and a construction method thereof; the non-pillar mining roadway sidewall closing device comprises a plurality of gangue retaining pillars arranged at intervals; an upper steel beam and a lower steel band are arranged at the upper and lower ends of the gangue retaining pillars respectively; a gangue retaining mesh is arranged on the sides of the gangue retaining pillars close to a gob; flexible cloth is arranged on the gangue retaining mesh; the upper end of the flexible cloth is fixed to a crossheading roof through the gangue retaining pillars and the upper steel beam; the lower end of the flexible cloth is fixed to a crossheading floor through the gangue retaining pillars and the lower steel band. The non-pillar mining roadway sidewall closing device is high in overall structural plasticity and meets the requirement on deformation of a roof; the existing gangue retaining mesh is used directly, the gangue retaining pillars are recyclable, and accordingly the cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of mining engineering, and in particular relates to a coal pillar-free mining roadside sealing device and a construction method thereof. Background technique [0002] The traditional layout of the working face requires at least two roadways to be excavated. After mining, an area of ​​increased pressure is formed on the coal walls on both sides, which is likely to cause dynamic disasters such as rock bursts and coal and gas outbursts. Adequate protective coal pillars to solve such problems. The coal pillar-free mining technology not only realizes coal pillar-free mining, but also improves the stress distribution around the stope by using the technology of advanced blasting and pre-splitting direct roofing. This method utilizes the caving of the direct roof to form a roadway, so isolating the harmful gas passage between the goaf and the roadway is the key to safe production. Traditional grouting wastes a lot...

Claims

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Application Information

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IPC IPC(8): E21F17/12
CPCE21F17/12
Inventor 郭峰黄克军陈通曹新奇李亮赵奕博金声尧梁少剑黄欣
Owner SHAANXI COAL & CHEM TECH INST
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