A kind of high-efficiency filling and mining method of extra-thick coal seam

A technology of extra-thick coal seam and mining method, which is applied in the fields of backfill, special mining, surface mining, etc., can solve the problems of increasing the technical difficulty of backfilling and mining, and the productivity advantage of difficult and extra-thick coal seams, so as to achieve rapid filling of the whole volume, reduce Equipment weight, the effect of simplifying the filling process system

Active Publication Date: 2021-11-09
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the filling mining of extra-thick coal seams with a thickness of more than 5m, when applying the existing longwall filling mining technology, it is necessary to carry out layered mining (about 3m in a single mining thickness), which increases the technical difficulty of filling mining. It is difficult to effectively utilize the production capacity advantages of ultra-thick coal seam mining when using the traditional backfill mining technology

Method used

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  • A kind of high-efficiency filling and mining method of extra-thick coal seam
  • A kind of high-efficiency filling and mining method of extra-thick coal seam
  • A kind of high-efficiency filling and mining method of extra-thick coal seam

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Effect test

Embodiment 1

[0044] like Figure 1 to Figure 6 As shown, when the ultra-thick coal seam high-efficiency filling mining method is matched with gangue mechanized filling process system, the following steps shall be followed:

[0045] The first step is to determine the key technical parameters of mining and filling: according to the occurrence conditions such as the thickness, burial depth, overlying rock, and shape of the extra-thick coal seam, combined with the characteristics of the mining area, surrounding rock control requirements, and technical characteristics of mining and filling equipment, reasonably determine the mining and filling. The length, advance and thickness of the working face, the length, width and depth of the mining and filling trenches, the width of the protective coal pillars between the trenches, the thickness of the protective coal pillars between layers, the width of the protective coal pillars between the roadways and other key technical parameters of mining and fil...

Embodiment 2

[0053] like Figure 1 to Figure 5 , Figure 7 ~ Figure 8 As shown, when the high-efficiency filling mining method of extra-thick coal seam is matched with paste or paste-like filling process system, the following steps shall be followed:

[0054] The first step is to determine the key technical parameters of mining and filling: according to the occurrence conditions such as the thickness, burial depth, overlying rock, and shape of the extra-thick coal seam, combined with the characteristics of the mining area, surrounding rock control requirements, and technical characteristics of mining and filling equipment, reasonably determine the mining and filling. The length, advance and thickness of the working face, the length, width and depth of the mining and filling trenches, the width of the protective coal pillars between the trenches, the thickness of the protective coal pillars between layers, the width of the protective coal pillars between the roadways and other key technical...

Embodiment 3

[0062] like Figure 1 to Figure 5 , Figure 9 ~ Figure 11 As shown, when the ultra-thick coal seam high-efficiency filling mining method is equipped with gangue and cement slurry independent transportation, natural mixing, and alluvial filling process system, the following steps are followed:

[0063] The first step is to determine the key technical parameters of mining and filling: according to the occurrence conditions such as the thickness, burial depth, overlying rock, and shape of the extra-thick coal seam, combined with the characteristics of the mining area, surrounding rock control requirements, and technical characteristics of mining and filling equipment, reasonably determine the mining and filling. The length, advance and thickness of the working face, the length, width and depth of the mining and filling trenches, the width of the protective coal pillars between the trenches, the thickness of the protective coal pillars between layers, the width of the protective c...

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Abstract

The invention discloses a high-efficiency filling and mining method for extra-thick coal seams, which comprises the following steps: determining key technical parameters of mining and filling; arranging roadways and mining and filling production systems; " type deep trench goaf, goaf filling, and goaf filling and roofing; realize safe and efficient mining of extra-thick coal seams, low-cost and high-efficiency filling of coal gangue and effective protection of the ecological environment; this method can improve coal mining capacity, reduce coal mining cost, simplify the relationship between mining and filling, improve filling capacity, ensure mining and filling safety, optimize filling space structure, realize full-volume filling of goaf, simplify filling process system, reduce filling cost, expand the application range of filling mining, Liberate sluggish coal resources, increase mine recovery rate, fill ground and underground coal gangue at low cost and efficiently, solve ecological and environmental protection problems, and achieve the overall optimization of coal resource development and utilization and minimize the impact on the ecological environment.

Description

technical field [0001] The invention belongs to the technical field of green mining of coal seams, and in particular relates to a highly efficient filling mining method for extra-thick coal seams, which is mainly applied to green filling mining of extra-thick coal seams with a thickness of more than 5m and solid deposits with similar conditions. Background technique [0002] my country is the world's largest energy producer and consumer. The development and utilization of coal resources has brought many ecological and environmental protection problems, such as the destruction of water resources caused by coal mining, the destruction of cultivated land caused by ground subsidence, and the efforts to liberate resources. The relocation of villages and the gangue pile on the ground have affected the local environment and ecological balance of the mining area. Coal green mining aims to optimize the development and utilization of coal resources and minimize the impact on the ecolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/18E21F15/00E21F15/06E21F17/00
CPCE21C41/18E21F15/005E21F15/06E21F17/00
Inventor 赵丽华高红波李涛臧立岩张建生桑宗其朱杨东陈和清
Owner TAIYUAN UNIV OF TECH
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