摘要
本文以葛洲坝坝基岩体为原型,通过地质力学模型试验,探讨了软硬互层岩体在轴向加载时,产生屈曲及层间错动的全过程。重点阐明了层间位移及层间剪应力分布的规律,夹层的应力状态,层间剪切带发育的部位、类型及形成机理等问题。
This paper, taking Gezhouba dam foundation as the prototype, through geomechanical model test, deals with the whole process of forming bed buckling and intercalated sliding as the axial force is applied to the rockmass with a combination of soft and hard interlayers. It emphatically explains the regularity of interealated displacement and the distribution of shear stress, the state of stress in intercalary layer, the position and mechanisms as well as types for the development of intercalated shear zone.
关键词
葛洲坝
岩层
屈曲
层间剪切带
bed buckling
intercalated sliding
intercalated shear zone
