黄土滑坡滑带土的物理特性研究

以陕西泾阳县泾河沿岸4个典型黄土滑坡为研究对象,通过现场勘察和采样试验,探寻滑带土的物理特性和结构特征差异,以期在实践中为确定滑动面位置提供可靠依据。研究结果显示:黄土滑坡滑带土的主要物理性质指标、电阻率特性、细观结构特征、微观结构特征与滑坡体及滑床有显著差异,在实践中可作为鉴别滑动面的标志;而滑带土的矿物、化学成分没有明显的差异变化。

Study on physical properties of soil in sliding zone of loess landslip

How to distinguish the sliding zone from a loess landslip relied on the technician’s experience in-site.4 typical loess landslides located in Jingyang County along Jinghe River,named Dongfeng landslip,Shutangwang landslip,Xiuchidu landslip and Taiping landslip were studied through in-situ measurement and sample tests to identify the sliding zone.It was shown that the physical property,electric resistivily and microstructure of soil in the slide area were different from those in the slope,and could be used to determine the slip zone,while the mineral ingredient and chemical composition could not be used generally to identify the slip zone.