摘要
在对木瓜矿煤层赋存条件进行分析的基础上,对煤层上行开采可行性进行了分析。利用比值分析、"三带"分析、围岩平衡和类比分析等方法对上行开采进行了可行性研究。特别是利用数值计算软件FLAC对9#煤开采造成的裂隙带高度、5#煤底板破坏深度进行计算并与理论计算结果相互验证,对两个煤层的连通情况进行分析。结果表明,木瓜煤矿上行开采具有较好的可行性和经济性。
Based on the analysis of the occurrence conditions Mugua coal mine, the feasibility of coal seam ascending mining was analyzed. The methods of ratio analysis, three - zone analysis, surrounding rock balance and analogy analysis were introduced. The height of fractured zone caused by the mining of 9# coal seam and the failure depth of seam floor were calculated, the result were verified by the theoretical calculation each other, the connectivity of fracture between two seams was calculated. The result shows that the ascending mining of Mugua coal mine is feasible and economical.
出处
《山西焦煤科技》
2009年第4期14-16,共3页
Shanxi Coking Coal Science & Technology
关键词
近距煤层
上行开采
可行性
数值模拟
Near distance coal seam group
Ascending mining
Feasibility
Numerical simulation
