覆岩组合运动特征及关键层位置研究  

RESEARCH ON COMBINED MOTION CHARACTERISTICS OF OVERLYING ROCK STRATUM AND POSITION OF KEY STRATUM

作　　者：刘开云[1] 乔春生[1] 周辉[2] 滕文彦[3] 

机构地区：[1]北京交通大学土建学院,北京100044 [2]中国科学院武汉岩土力学研究所岩土力学重点实验室,武汉430071 [3]石家庄铁路工程职业技术学院土木工程系,石家庄050041

出　　处：《岩石力学与工程学报》2004年第8期1301-1306,共6页Chinese Journal of Rock Mechanics and Engineering

摘　　要：把煤矿覆岩的组合运动视为以坚硬岩层为依托的复合关键层的运动,运用弹性薄板理论和复合材料力学的层合板理论讨论了复合关键层的应力,从而为计算复合关键层的整体强度提供了途径;并且采用结构塑性极限分析方法解析得出了关键层失稳时的极限荷载,依据此极限荷载可以近似判断出覆岩中关键层的位置。The combined motion of the overlying rock stratum of coal mine is regarded as a motion of the compound key stratum sustained by stiff rock stratum. The stress of the compound key stratum is discussed by using the elastic thin plate theory and the laminated plate theory of the compound material mechanics. The collapsing load of the key stratum is obtained by adopting the plastical limit analysis method structure. Based on the collapsing load,the posotion of key stratum can be estimated approximatively.

关 键 词：采矿工程 复合关键层 弹性薄板 层合板 塑性极限荷载 复合材料 

分 类 号：TD31[矿业工程—矿井建设]