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A Long Arm Longitudinal Strip Type Paste Filling Recovery Technology

A technology of paste filling and longitudinal striping, which is applied in the direction of filling, ground mining, mining equipment, etc., can solve the problems of easy occurrence of pulp running, poor filling effect, etc., prevent spontaneous combustion and water accumulation, use less equipment, and comprehensive The effect of simple mining equipment

Active Publication Date: 2019-03-29
乌海市天裕工贸有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a long-arm longitudinal strip-type paste filling and mining process, which solves the technical problems of poor filling effect and easy occurrence of slurry leakage in the mining process

Method used

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  • A Long Arm Longitudinal Strip Type Paste Filling Recovery Technology

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Embodiment Construction

[0040] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] Taking the 110902 working face designed by Wuhai Tianyu Industry and Trade Co., Ltd. as the construction site, the average thickness of the coal seam of the 110902 working face is 5.2m, and the strike length is 300m.

[0042] Set mining branch roadway 2, which is arranged at an angle of 55° with transportation channel 1. The opening of the branch roadway is located in transportation channel 1, and each branch roadway is arranged in parallel. They are numbered 1, 2, 3, 4... from the inside to the outside; The length of each branch roadway is 150m, the width is 5m, and the height of the branch roadway is the same as the average thickness of the coal seam, which is 5.2m.

[0043]The opening point of the branch roadway in the working face is located in the transport channel 1 of the working face, and is constructed along the roof of the coa...

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Abstract

The invention discloses a long-arm longitudinal strip type paste filling and stoping technology. The long-arm longitudinal strip type paste filling and stoping technology comprises the steps that by adopting the mode of skip-mining interval filling, branch entry openings are designed to be located in a conveying crossheading, all branch entries are arranged parallelly and are equal in width, the heights of all the branch entries are the same as the average thickness of a coal seam, and the branch entries are sequentially numbered from inside to outside; the odd branch entries are stoped firstly, filling is conducted after stoping is completed, then the even branch entries are stoped, and filling is conducted; the stoping excavation direction is from the conveying crossheading to an air return crossheading; filling is completed by four times in the filling process; and a filling material comprises 500-2000 kg / m<3> of gangue, 10-300 kg / m<3> of cement, 10-300 kg / m<3> of fly ash, and 20-400 kg / m<3> of water. According to the long-arm longitudinal strip type paste filling and stoping technology, applicability is high, the cost is low, the technology is simple, the labor intensity of workers is low, the filling effect is good, and damage to the natural environment is small.

Description

technical field [0001] The invention relates to a coal mine recovery technology, in particular to a long-arm longitudinal strip type paste filling recovery technology. Background technique [0002] Strip mining is to divide the recovered coal seam into several strips, mining one (i.e. mining strip), retaining one (i.e. retaining coal pillar), and supporting the roof with the unmined coal pillar, which can reduce surface movement and deformation. Paste filling mining is a method of filling the goaf with coal gangue, fly ash and other filling materials to play a supporting role, and then carry out mining, which can effectively reduce land subsidence. Since strip mining is partial mining, the recovery rate is too low, which is likely to cause waste of resources; combining strip mining and paste filling mining, that is, paste filling is performed on the produced strips in strip mining, as the previously reserved Striped coal pillars are a mining method in which the remaining s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/18E21F15/00
CPCE21C41/18E21F15/005
Inventor 郭金龙吕继保白秋生
Owner 乌海市天裕工贸有限公司
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