陕西煤炭2025，Vol.44Issue(3)：24-28,56,6.DOI:10.20120/j.cnki.issn.1671-749x.2025.0304
浅埋深薄基岩综采工作面合理煤柱宽度优化研究
Optimization of reasonable coal pillar width in shallow buried thin bedrock fully mechanized mining face
畅艳平 1刘闯 2牛小雪 2张启硕2
作者信息
- 1. 晋城市能源发展中心,山西 晋城 048000
- 2. 河南工程学院 资源与安全工程学院,河南 郑州 451191
- 折叠
摘要
Abstract
In order to study the influence of the width of coal pillar on the mining pressure law in the process of large mining height working face under the conditions of shallow and thin bedrock coal seam mining,a numerical simulation mining model was established for the 5103 large-height mining working face of Sujiazhai Coal Mine under different coal pillar size condi-tions.The results show that when the coal pillar is 3 m,the return air roadway is located in the pressure reducing zone,with a small stress concentration coefficient;When the coal pillar is 5～12 m,the entire coal pillar is completely plastic dam-aged,the strength of coal pillars has sharply decreased,and there is a high demand for roadway support;When the coal pillar is greater than 15 m,the range of plastic damage in the coal pillar decreases,and the strength of the coal pillar does not sig-nificantly decrease,and the support requirements are not high;According to the support effect of the coal mine,the reasona-ble width of the coal pillar retaining between the working face and the return air roadway is 12～15 m.The research results have certain reference for optimizing the width of coal pillars in shallow buried thin bedrock coal seam mining.关键词
浅埋深/大采高/综采工作面/煤柱宽度Key words
shallow-buried/large mining height/fully mechanized mining face/coal pillar width分类
矿山工程引用本文复制引用
畅艳平,刘闯,牛小雪,张启硕..浅埋深薄基岩综采工作面合理煤柱宽度优化研究[J].陕西煤炭,2025,44(3):24-28,56,6.
