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Thick coal seam wide-roadway tunneling and gangue paste body filling roadway forming method

A paste filling and thick coal seam technology, which is applied in the direction of filling, earth square drilling, ground mining, etc., can solve the problems of large gangue output, human living conditions and environmental hazards, and reduce the cost of excavation and ensure stability and high efficiency. Efficiency performance, the effect of reducing roof hazards

Active Publication Date: 2018-08-17
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, mines with thick coal seams have a large amount of gangue, and gangue piles are formed on the ground, which brings great harm to human living conditions and the environment.

Method used

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  • Thick coal seam wide-roadway tunneling and gangue paste body filling roadway forming method
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Embodiment Construction

[0033] The present invention proposes a gangue paste filling system for thick coal seam and wide roadway excavation. In order to make the advantages and technical solutions of the present invention clearer and clearer, the present invention will be described in detail below in conjunction with specific examples.

[0034] combine Figure 1 to Figure 4 Shown:

[0035] In the first step, according to the geological conditions of the coal seam, the width of the filling zone 2 is determined to be 9m and the width of the newly excavated roadway 1 is 4m.

[0036] In the second step, combined with the existing technical conditions of mine excavation, the cycle filling step L is determined to be 14m. When the newly dug roadway 1 is excavated in the coal seam, the section size of the roadway is 4m wide and 3m high. Roadway top plate 10, base plate 11, and roadway inner side 9 play strong anchor rods and anchor cables, and hang diamond-shaped metal mesh at the end of the anchor rods to...

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Abstract

The invention discloses a thick coal seam wide-roadway tunneling and gangue paste body filling roadway forming method and belongs to the technical field of mining industry. The method comprises the steps that firstly, according to the coal seam geological condition, the widths of a filled belt and a newly-tunneled roadway are designed; secondly, according to the mine existing tunneling technological condition, the filling length, namely the circular filling step pitch, of each time is determined; when the newly-tunneled roadway is tunneled, through high strength anchor rods abd anchor net cables, top plates, bottom plates and roadway inner coal walls are supported; then, after the newly-tunneled roadway is tunneled by the circular filling step pitch, roadway-expanding tunneling begins to be conducted along the roadway outer coal wall; during roadway-expanding tunneling, hydraulic supporting columns are adopted to be matched with metal hinging top beams for temporary support of the filled belt and the junction of the filled belt and the newly-tunneled roadway; finally, after roadway-expanding tunneling is completed, the temporary support is removed, the filled belt is filled; and then the steps are sequentially and alternately implemented. According to the thick coal seam wide-roadway tunneling and gangue paste body filling roadway forming method, the coal loss caused by unexploited coal pillars can be effectively reduced, the influence of mine pressure in roadway tunneling is reduced, and the gangue treatment and roadway tunneling costs are reduced.

Description

technical field [0001] The invention relates to the field of mining technology, in particular to a method for filling a roadway with gangue paste for thick coal seam wide roadway excavation. Background technique [0002] At present, coal pillars are set between the working faces of the mining (belt) areas in most mining areas in my country. At the same time reduce the impact of mine pressure on the working face. Mine pressure in thick coal seams is high, resulting in changes in the mechanical properties of the remaining coal pillars, which are easily damaged and unstable. And mines that exploit thick coal seams have a large amount of gangue, and piles of gangue are formed on the ground, which brings great harm to human living conditions and the environment. [0003] Under the condition of thick coal seam, the method of filling wide roadway with gangue paste can effectively reduce the coal loss caused by leaving coal pillars for roadway protection when mining thick coal seam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/08E21F15/04E21D20/00E21D23/04
CPCE21D20/00E21D23/04E21F15/04E21F15/08E21C41/18E21F15/02
Inventor 郭忠平刘炜震简勇马帅
Owner SHANDONG UNIV OF SCI & TECH
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