铜川烈-柴公路收费站滑坡机理研究

目的以铜川烈-柴公路收费站滑坡为例，研究黄土滑坡机理，为黄土滑坡预报和工程治理奠定基础。方法通过现场勘察及室内试验，对黄土滑坡的形成机理及运动学机理进行了深入地研究，分析了地下水对黄土滑坡形成的影响。结果在考虑孔隙水压力情况下，分别统计出了孔压系数与饱和度及孔隙比之间的关系，并对滑坡的滑距、滑速进行了计算分析。结论本滑坡符合黄土蠕滑动液化机理模型及滑坡运动学机理模型，提出的滑坡运动轨迹方程、滑体质心速度曲线方程、滑距公式在实际工程中具有应用价值。

A study on the mechanism of Lie-Chai highroad toil-gate landslide in Tongchuan City

Aim To lay a faundation investigation into the mechanism of loess landslide for the forecast and control of it.Methods The form and kinematical mechanism of Lie-Chai highroad tollgate landslide is studied based on data of field investigation and soil mechanic test. The influence of groundwater in form of loess landslide is analyzed.Results In consideration of pore water pressure, the relationship between coefficient of pore water pressure and degree of saturation, as well as between porous ratio, is identified using the statistic technique; the traveling distance and sliding speed are also calculated.Conclusion The loess landslide accords with the model of wriggling-gliding liquefaction mechanism of loess and the model of kinematics mechanism of loess. The contrail equation of movement of loess landslide, curve equation of velocity of center of mass of loess landslide, and the landslide distance formula, have practical applicability value in engineering practice.