贵州省纳雍县岩脚寨基岩顺层滑坡特征及研究意义

Characteristic of Bedrock Landslip Along Strata level in Yanjiaozhai, Nayong County, Guizhou and Its Implication

岩脚寨基岩顺层滑坡,滑体为关岭组第二段灰岩,滑床为关岭组第一段杂色泥岩,滑坡后壁被拉张节理控制。SE端以较快速度剪出,滑体破碎,前缘再次滑动形成牵引式松散层滑坡危及当地村民生命财产安全;NW端缓慢蠕动,地裂缝发育,向SE演变为松散层滑坡后壁。

Of Yanjiaozhai bedrock landslip along strata, the landslip body is second member of the limestone of Guanlin Formation and the landslip bed is first member of the mottled mudstone and the back face is under control of the tension joint. Shearing in a comparatively short period at southeastern end, the landslip broke up and its front margin glided forming the drawing landslip of the incoherent bed, which endangered the life and property of local people; the fissure developed when creeping slowly at northwestern end, and evolved into the landslip back wall of the incoherent towards southwest.