摘要
以淮南矿区李嘴孜煤矿大倾角炮采工作面转综采切眼特殊施工条件为背景,采用理论分析、数值模拟和工业试验等手段,综合分析介绍了在大倾角、软底等不利条件下的锚梁网索和单体组合梁支护、局部加强支护等联合支护方法,揭示了切眼内围岩压力及顶板离层发展规律,成功解决了大倾角炮采工作面转综采切眼的支护技术难题。切眼可近似认为是为无煤柱沿空留巷和沿空掘巷的组合,是一种全新的沿空留(掘)巷的形式,也是对完全沿空巷道支护形式的一次成功尝试。
For the special construction condition of open-off cut in full-mechanized mining face transferred from blasting mining face with large inclined angle of Lizhuizi Colliery in Huainan mining area,applying theoretical analysis,numerical simulation and industry test,stress distribution of surrounding rock and roof separation rule was obtained by introducing combined supporting method of anchored mesh and rope,combined beam of single prop and intensifying supporting.The supporting difficult problem of open-off cut in full-mechanized mining face transferred from blasting mining face with large inclined angle was solved.Open-off cut might be seem as combination of driving and retaining roadway along gob,the combined supporting method was a successful trial for supporting roadway along gob.
出处
《煤矿开采》
北大核心
2011年第2期41-44,共4页
Coal Mining Technology
关键词
大倾角
炮采工作面
综采切眼
沿空巷道
large inclined angle
blasting mining face
open-off cut of full-mechanized mining
roadway along gob
