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.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第8期1301-1306,共6页
Chinese Journal of Rock Mechanics and Engineering
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
mining engineering,compound key stratum,elastic thin plate,laminated plate,plastic limit load,position of key stratum
