浅埋煤层采动覆岩运动相似材料模拟研究  

Study on Similar Material Simulation of Mining Overburden Strata Movement in Shallow Coal Seam

作　　者：魏久传[1] 李忠建[1] 郭建斌[1] 张新国[2] 李炳胜[3] 谢道雷[1] 

机构地区：[1]山东科技大学地质科学与工程学院,山东青岛266510 [2]山东科技大学资源与环境工程学院,山东青岛266510 [3]新汶矿业集团,山东新泰271233

出　　处：《矿业安全与环保》2010年第4期11-13,共3页Mining Safety & Environmental Protection

基　　金：山东科技大学研究生科技创新基金项目(YCA100102)

摘　　要：为分析伊犁一矿首采工作面浅埋煤层采动覆岩运动特征,进行了相似材料模拟研究。分析了直接顶破坏、老顶破坏、采动覆岩破坏高度发展等规律,并进行了切顶冒落分析。研究结果表明,首采工作面具有采动覆岩破裂高度随工作面推进而增大,采动覆岩破裂高度在充分采动前约为采空区跨度之半等规律。试验过程和理论计算均未出现切顶冒落现象。研究结果可为矿区首采工作面煤层安全开采提供理论依据,同时,对分析其他浅埋煤层安全开采覆岩运动规律具有一定的借鉴意义。The simulation study of the similar materials was carried out in order to analyze the movement characteristics of the mining overburden strata in shallow coal seam. Analysis was made for the the breaking law of the main and immediate roof, the development law of the mining overburden strata failure height, the roof-cut caving and so on. The results showed that the failure height of the mining overburden strata in the first-mining face increased with the face advance and the breaking height of the mining overburden strata before full mining was about half of the gob span. No roof-cut caving occurred in the test and theoretical calculation. The test results can provide theoretical basis for the safe extraction of the first-mining face and also has reference significance for analyzing the overburden strata movement law of other shallow coal seams.

关 键 词：浅埋煤层 覆岩运动 相似材料模拟 切顶冒落 

分 类 号：TD325[矿业工程—矿井建设]