煤矿安全2012，Vol.43Issue(7)：52-55,4.
近距离煤层群上行开采薄煤层覆岩移动规律研究
Study on Overlying Rocks Movement Laws of Ascending Mining Thin Coal Seam in Closed Distance Coal Seam Group
摘要
Abstract
In order to upward mine abandoned coal resources securely and effectively, according to the coal seam occurrence condition and present mining situation of Zhangjiazhuang coal mine in Fenxi , failure and movement laws of overlying rocks were studied by theo- retical analysis and UDEC discrete element numerical software simulation when 10# coal seam and 9# thin coal seam were mined respectively. Overlying rocks＇movement and deformation laws of two kinds of typical lithologic structures mudstone and limestone were con- trasted and analyzed. By monitoring overlying rocks displacement changes as excavation goes when coal seams were mined, the paper draws a conclusion that the mining stable time of mudstone lithologic structure overlying rock is shorter than the time of limestone lithol- ogic structure overlying rock, which is consistent with the real situation.关键词
煤层群/上行开采/薄煤层/UDEC数值模拟/岩性结构/开采时间Key words
coal seam group/ascending mining/thin coal seam/UDEC numerical simulation/lithologic structure/mining time分类
矿业与冶金引用本文复制引用
许力峰,刘珂铭,张江利,周根立,李艳君,杨维帅..近距离煤层群上行开采薄煤层覆岩移动规律研究[J].煤矿安全,2012,43(7):52-55,4.基金项目
国家重点基础研究发展计划（973计划）资助项目 （）
中央校基本科研业务资助项目 （）
