岩石破坏机理与岩石强度准则新探  

A FURTHER STUDY ON THE FAILURE MECHANISM AND A STRENGTH CRITERION OF ROCKS

作　　者：张孟喜[1] 邓荣基[1] 朱文喜 

机构地区：[1]兰州铁道学院土木工程系,铁道部专业设计院隧道所

出　　处：《甘肃科学学报》1996年第1期56-61,共6页Journal of Gansu Sciences

摘　　要：岩石内部存在一个宏观的和微观的裂隙系统，岩体的一切力学特性几乎都与这个裂隙系统有关，当然岩体的破坏机理与强度准则也不例外。本文根据作者对各种形状裂隙所作的应力分析和模型试验研究所得结论，阐明岩石在常温下出现脆性破坏和延性破坏特性的各自应力条件。同时作者还探索建议一种能同时适用于该破坏机理的通用岩石强度准则。There is a macro-crack and micro-crack system in rocks,which affects almost all the mechanical properties of rocks,especially the failure mechanism and the strength criterion.The pre-existing cracks under loading are fundamental to an understanding of rock fracture mechanisms.According to the results of our tracking analysis by the finite element method and model tests simulating various crack conditions(or states, geometries),the authors discussed the mechanism and the stress condition at brittle failure as well as at ductile failure of rock in ambient temperature.A rock strength criterion suitable for both failure mechanisms is also proposed.

关 键 词：破坏机理 强度准则 裂隙 岩石力学 

分 类 号：TU452[建筑科学—岩土工程]