松散土质滑坡位移与降雨量的相关性研究

STUDY ON RELATIONSHIP BETWEEN SLOPE-MASS SLIDE DISPLACEMENT AND PRECIPITATION OF LOOSE SOIL LANDSLIDE

为了揭示松散土质滑坡滑体位移与降雨量之间的相关性分布规律,通过资料搜集整理和分析、现场工程地质调查,采用数理统计分析法,分别对典型浅层和中层松散土质滑坡坡体位移与降雨量进行了指数和幂函数等模型的线性或非线性回归分析和比较。研究结果表明:浅层和中层松散土质滑坡坡体位移与降雨量相关关系一般服从幂函数分布的规律。据此建立松散土质滑坡位移与降雨量的通用统计模型。该研究结果可为降雨条件下浅层和中层松散土质滑坡的变形解体破坏机制及稳定性研究和预测预报提供科学依据。

In order to reveal the related distribution law between slope-mass slide displacement and precipitation of shallow and medium layer for loose soil landslide,the distribution law of power function was derived with the relationship between slope-mass slide displacement and precipitation.Through the in-situ data of collection,arrangement and analysis—the site investigation and exploration of engineering geology,the analytical means of mathematic statistics are considered for the slope-mass slide displacement and precipitation of typical shallow and medium layer for loose soil landslide with the nonlinear regression analyses and comparisons of exponent model and power function and so on.The general statistical model of slope-mass displacement and precipitation for loose soil landslide was established.The achieved results may provide the scientific basis for the study on the mechanism of deformation,disintegration and failure,the stability,and the forecast and prediction of this kind of loose soil landslide under precipitation.