近距离煤层采空区下工作面矿压显现规律研究  

Study on Mine Strata Pressure Behavior Law of Coal Mining Face Under Goaf of Close Distance Seams

作　　者：谷拴成[1] 陈盼[1] 王建文 

机构地区：[1]西安科技大学,陕西西安710054 [2]陕煤集团神木柠条塔矿业有限公司,陕西神木719300

出　　处：《煤炭工程》2014年第5期74-76,80,共4页Coal Engineering

摘　　要：针对上煤层已采的下煤层工作面回采时矿压显现规律不同于常规工作面的现象,在原有岩层移动理论基础上定义了承载层和主承载层的概念。分析了承载层断裂垮落过程对下煤层工作面矿压显现规律的影响。结果表明:承载层分层断裂引起的强度和影响范围各异的顶板来压在工作面叠加出现,导致工作面来压规律混乱;越靠工作面上部的岩层断裂对工作面矿压显现的影响越小且越靠工作面后方。最后,通过工程实例,验证了分析结果的合理性,说明该方法有广泛的使用范围。In close -distance coal seams, for the lower coal seam mining under goaf of the upper coal seam, the rock pressure behavior is different from common working face, aiming at this phenomenon, and based on the original principle of rock strata movement, bearing layer and main bearing layer were defined. The influence of the bearing layer rupturing process and collapsing on the rock pressure behavior law of coal seam working face was analyzed. The results show that, the interlaminar fracture of bearing layer causes the weighting superposition in working faces with different power and influencing range, and incidence roof leading to confusion of working face weighting regularity, and rock fracture nearer to working face top has less effect on strata behaviors of working face and nearer to working face bottom. Finally, the result of the theoretical analysis was verified in practice, proving the wide applicable range of the method.

关 键 词：近距离煤层群 承载层 矿压显现 岩层移动 采空区 

分 类 号：TD323[矿业工程—矿井建设]