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Different-strength bearing roadway-beside filling body of gob-side entry under coal mine

A technology of retaining entry and filling body, which is applied in the direction of filling, mining equipment, safety devices, etc. It can solve the problems of not satisfying the principle of joint action, etc., and achieve the effects of reducing costs, reducing settlement, and reducing floor bulging

Inactive Publication Date: 2011-01-19
山东新矿赵官能源有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above roadside support methods cannot meet the requirements of the principle of synergy

Method used

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  • Different-strength bearing roadway-beside filling body of gob-side entry under coal mine
  • Different-strength bearing roadway-beside filling body of gob-side entry under coal mine

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Experimental program
Comparison scheme
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Embodiment Construction

[0016] refer to figure 1 The specific construction method of the supporting body beside the gob-side entry retaining of the present invention is described as follows:

[0017] 1. Construction gangue wall 2

[0018] ①Put the crushed gangue in the woven bag for later use;

[0019] ②Within the 1.5-meter steel belt support range from the lower side of the filling body to the gob, gangue bags are stacked sequentially from the goaf to the tail beam of the support to form a gangue wall 2;

[0020] When stacking gangue bags, it is carried out under the protection of the temporary pillars behind the brackets, and the stacking is carried out as the racks are moved. The unstacked space after the brackets shall not exceed 1.2m.

[0021] Requirements: a. gangue bag pressure seam filling, not hollow, the unfilled space between gangue bags can be filled with crushed floating gangue; b. Between layers of gangue bags, stack them in a criss-cross pattern to ensure the stability of the gangue ...

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Abstract

The invention discloses a different-strength bearing roadway-beside filling body of a gob-side entry under a coal mine, which is characterized in that a gangue wall built by gangue bags (width: 1.5 to 2.0 meters) and a paste filling body (width: 1.5 to 2.0 meters) are closely combined so as to form a roadway-beside filling body made of different-strength materials by way of coupling; after a waterproof cloth is hung on the inner side of the gangue wall, a fixed die plate is used as the lower support of the paste filling body, and a temporary die plate is arranged as the upper support of the paste filling body, then the paste filling materials are filled into the die plates so as to form the different-strength bearing roadway-beside filling body after the filled paste filling materials are solidified. In the invention, a different-strength coupling roadway-beside filling body is formed by using the gangues and the roadway-beside filling bodies produced in the process of producing a working surface, which simply uses paste cementing material filling bodies, and can significantly reduce the pressure bore by the original roadway-beside filling body, and relieve the roof settlement of the floor bulge so as to adapt to the motion of rocks around the roadway better and obtain a better gob-side entry effect, meanwhile, the produced gangues can be digested in situ, and the economic benefits and environmental benefits can be obtained.

Description

technical field [0001] The invention relates to a roadside filling technology for an underground gob-side roadway in a coal mine, in particular to a roadside filling body formed by combining a paste cementing material and a gangue belt. Background technique [0002] Gob-side retaining is a form of coal-pillar-free roadway protection, among which non-coal-pillar roadway protection is a major reform of coal mining technology, and gob-side entry retaining technology is the main aspect of the technical reform of mining roadway support. It is widely valued for its advantages of being beneficial to the rational development of coal resources, improving the recovery rate of coal resources, reducing the amount of roadway excavation, fundamentally improving the tense situation of mine excavation replacement, improving roadway maintenance conditions, and improving mine mining efficiency. In terms of environmental protection of coal mining, people try to realize green mining of coal min...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00
Inventor 何希霖高明涛郭忠平刘永禄刘德春
Owner 山东新矿赵官能源有限责任公司
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