“条采留巷充填法”绿色协调开采技术

白二虎; 郭文兵; 谭毅; 杨达明

doi:10.13225/j.cnki.jccs.2017.1277

“条采留巷充填法”绿色协调开采技术

1. 河南理工大学能源科学与工程学院, 河南焦作 454000;
2. 煤炭安全生产河南省协同创新中心, 河南焦作 454000

基金项目:

国家自然科学基金资助项目(51374092,51774111)

河南省科技创新杰出人才资助项目(184200510003)

详细信息

作者简介:
白二虎(1989-),男,河南周口人,博士研究生。Tel:0391-3987902,E-mail:baieh@foxmail.com

中图分类号: TD823.7
计量
- 文章访问数: 20
- HTML全文浏览量: 12
- PDF下载量: 5
出版历程
- 收稿日期: 2017-09-17
- 修回日期: 2017-11-29
- 网络出版日期: 2023-05-25

Green coordinated mining technology of strip mining roadway backfilling method

1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
2. Collaborative Innovative Center of Coal Safety Production in Henan Province, Jiaozuo 454000, China

摘要

摘要: 为减轻高强度开采对我国西北地区地表及生态环境的破坏,结合条带开采与充填开采的优势,提出了一种“条采留巷充填法”部分充填的协调开采方法。采用理论分析与相似模拟相结合的研究方法,给出了条带开采的采留宽、沿空留巷的巷旁充填宽度和充填率的确定原则,分析了巷旁充填体提升条带煤柱稳定性的作用原理及置换煤柱开采的覆岩稳定性。以哈拉沟煤矿22407工作面地质条件为工程背景,确定了合理的工艺参数并进行了数值模拟研究。结果表明:在开采尺寸达到充分采动后,覆岩中的亚关键层4最大下沉量为12 mm,可推知地表基本不出现下沉,取得了良好的地表沉陷控制效果。该技术为降低充填成本,保护地表生态环境提供借鉴。
- “条采留巷充填法” /
- 条带煤柱 /
- 地表沉陷 /
- 生态环境
Abstract: In order to reduce the damage of surface and ecological environment in Northwest China caused by high-intensity mining, a new coordinated mining method mixed with“strip mining roadway backfilling method”of partial mining was proposed according to the advantages of strip mining method and backfill mining method.The theoretical analysis and physical simulation method were used.Then the principle of determining the width left of strip mining, the filling width in gob-side entry retaining and the filling rate were given. Meanwhile, the mechanism of coal pillar stability improved by filling body and the overburden stability of backfill mining were also analyzed. The condition of 22407 work face in Halagou coal mine was taken as a model for the research, and the reasonable mining parameters were determined and the numerical simulation was carried out. The results demonstrated that the maximum subsidence of the No.4 sub-key strata was 12 mm after the mining size reached critical extraction.It also inferred that there was no subsidence on the surface, which achieved a good control effect of surface subsidence.The technology provides a new mean to reduce the cost of backfilling and protect the ecological environment.
- “strip mining roadway backfilling”method /
- strip pillars /
- surface subsidence /
- ecological environment

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