摘要
由于回坡底煤矿五采区10#煤层受过去小窑破坏性开采其上分层影响,导致现复采工作面再生顶板破碎,控制难度较大。本文采用理论分析、数值模拟、现场监测等方法,对复采工作面煤柱及空巷稳定性进行了研究,研究表明,煤柱稳定性与其宽度呈正相关,空巷稳定性与其跨度呈正相关,采用优化顶板控制技术可保证工作面在通过煤柱及空巷时围岩变形量控制在较小范围之内。
As the 10#coal seam of Huipodi Coal Mine is affected by the stratification of the destructive mining of small kiln in the past, the regenerative roof of the existing mining face is broken and the control is difficult. In this paper, theoretical analysis, numerical simulation,on-site monitoring and other methods are used to study the stability of coal pillar and empty roadway in the mining face. The research shows that the stability of coal pillar is positively correlated with its width, and the stability of the empty lane is positively correlated with its span. The optimized roof control technology can ensure that the deformation of the surrounding rock is controlled within a small range when the working face passes through the coal pillar and the empty lane.
作者
李晨涛
LI Chentao(Huozhou Coal and Electricity Group Luhe Coking Coal Co.,Ltd.Huipo Bottom Mine,Shanxi Hongdong 041602)
出处
《煤矿现代化》
2020年第3期63-65,68,共4页
Coal Mine Modernization
关键词
复采工作面
顶板破碎
顶板控制
complex mining face
roof fracture
roof control
