【作者】 钱鸣高； 许家林； 缪协兴；

【Author】 QIAN Ming-gao, XU Jia-lin, MIAO Xie-xing(China University of Mining and Technology, Xuzhou 221008, China)

【机构】 中国矿业大学采矿系；

【摘要】 介绍了岩层控制关键层理论的基本概念,研究了两层硬岩层同步破断的条件及关键层上载荷分布,揭示了关键层破断的复合效应和关键层上载荷的动态与非均布特征.并就关键层运动对采场矿压显现、覆岩裂隙场分布及地表下沉的影响进行了分析,对关键层理论在采场矿压控制、卸压瓦斯抽放、底板突水防治、离层注浆与建筑物下采煤等方面的工程应用情况进行了总结.最后指出了关键层理论下一步研究的重点.更多还原

【Abstract】 The basic concepts of key strata theory in ground control are introduced, the order of two hard strata fracturing and the loading distribution on key strata have been studied, the complex effect between key strata , the characteristics of loading changing on key strata have been revealed. The influence of key strata movement on ground pressure, distribution of mining-induced fractrures and the subsidence have been studied. The research advances in the application of key strata theory in ground pressure control, relieved coal methane drainage and mining under buildings are summarized. The research emphasis about key strata theory in the future are been indicated.更多还原