摘要
滑带土抗剪强度参数的正确选取，是滑坡稳定性评价和抗滑工程设计中的关键问题。本文在现场调研和室内试验基础上，揭示了只要具有一定滑体厚度的滑带土，沿滑面具有强度再生现象，在抗剪强度参数中尤其存在一定量值的结构强度；讨论了结构强度再生的条件及其变化规律，论证了滑带土沿早期滑动面的残余强度仅仅是一种瞬时效应，为滑坡滑面强度参数的选取与评价提供了重要的理论依据。
The parameters of shear strength of slide zone soil are indispensable factors for stability evaluation and countermeasure design to landslides.Based on the field investigation and laboratory test, the authours discovered that the shear strength contains structural strength-cohesion restored to some extent along the early sliding planes in the slide zone soil underlying the slide rockmass.The formation conditions and variation features of restored cohesion are discussed in this paper.It is proved fully that the residual strength of slide zone soil is only an instantaneous effect.The study provides an important theoritical basis for selecting and evlauating the strength parameter of slide zone soil.
出处
《地质灾害与环境保护》
1996年第3期7-12,共6页
Journal of Geological Hazards and Environment Preservation
基金
国家自然科学基金
工程地质力学开放实验室资助
关键词
滑坡
滑带土
结构强度
残余强度
再生
压应力
Landslide
Stuctural strength of slide zone soil
Residual strength
Restoration
Compressive stress
