基于深部位移的边坡滑动特征分析

Sliding characteristics analysis of land slide based on the deep displacement

在进行边坡稳定性分析时,需利用边坡深部位移来分析边坡的现状和发展趋势.在选择数据过程中,往往选取位移突变的点,即关键点作为分析对象.将滑坡土体分为若干个滑动速度不同的块体,利用深部位移曲线划分块体,并用两个量描述块体的性质:变形位移和滑移位移.研究结果表明,相对于关键点的位移,块体的变形位移能够被用来判断边坡的潜在滑动面的位置,也可以被用来判断边坡的整体发展情况.

The internal slope displacement was used to analyze the current situation and development trend of the slope.The displacement catastrophe point as the key point is selected in these analyses.The paper presents the landslide can be divided into several blocks with different slip rate and deep deformation curve is used to divide the blocks.The paper also presents the method to divide the blocks and describes the displacement of a block with two variables： deformation displacement and the sliding displacement.The result shows that compared to the displacement of key points,the deformation displacement has the advantages in describing the sliding surface and being a parameter to analyze the land sliding.