湖南省冷家溪地层滑坡形成机理及岩土参数研究

Investigation of the formation mechanism and geotechnical parameters of the Lengjiaxi Gr stratum landslide in Hunan Province

为减少冷家溪地层发生滑坡带来的灾害,采用理论分析、工程实践、室内浸水试验相结合的方法,对该地层滑坡形成机理进行分析,通过浸水试验模拟板岩岩土界面处在雨水作用下的变化,论证了滑坡形成的过程及滑面位置。针对板岩类边坡岩土参数取值难的问题,依据工程实践的勘察处治经验,采用数值统计的方法,对不同岩性冷家溪地层分类提出岩土经验参数,解决了冷家溪地层滑坡勘察处治的难题。

In order to reduce the disaster caused by landslide in Lengjiaxi Gr stratum,the formation mechanism of landslides is analyzed through theoretical analysis,engineering practice,and indoor immersion testing.The process of landslide formation and the position of the sliding surface are demonstrated by simulating the change in the interface between SLATE rock and soil under the influence of rain during immersion testing。The empirical parameters of rock and soil in different lithologies of the Lengjiaxi strata are proposed through numerical statistics,based on investigation and treatment experience from engineering practice.This approach effectively addresses the challenges associated with investigating and treating landslides in Lengjiaxi Gr stratum。