中文摘要：

岩土的电阻率受干密度、含水率和孔隙率等因素的影响。选取贵州省毕威高速公路有代表性的边坡,利用岩土的电阻率差异区分残积土分布厚度和不同位置的风化程度,进行高密度电阻率法勘察。试验结果表明：玄武岩残积土边坡分层现象不明显,不同位置残积土的厚度分布不均;残积土与基岩的电阻率差别较大,可初步确定基岩的分布形态;在横向上不同位置残积土的风化程度差别较大。

英文摘要：

The resistivity of rock-soil is affected by dry density,water content and porosity.For researching how to distinguish the thickness of residual soil and the depth of bedrock by using the difference of resistivity,the high-density resistivity method is used to explorate the slope of Bijie-Weining Express Highway in Guizhou.The results show that： the layered soil of basalt slope is not obvious,and the thickness is nonuniform with different place;The distributional pattern of the bedrock could be initially defined based on the resistivity difference of the residual soil and bedrock;The weathering degree of the residual soil is variable greatly at different place on horizontal.