综合勘察方法在某滑坡中的应用

Application of Comprehensive Survey methods in Landslide of Slope

在滑坡的勘察中,综合多种方法,能准确查明滑坡体地质情况,且勘察手段相互结合能提高工作效率、成果质量可信度等。为探究钻探、高密度电阻率法和井下电视3种勘察方法的综合勘察效果,分别叙述了该3种方法在某公路高边坡上的使用实例,同时比较了钻探、高密度电法和井下电视方法各自的优缺点。研究表明:钻探在划分土层界限中可发挥重要作用;高密度电法能查明整个场地内地下水分布及影响;井下电视可以全景展示坡体内实际状况,是目前最直观的一种勘察手段。3种方法相互结合能准确划分边坡的地层分界、判定潜在滑动面位置,勘察结果基本一致,并且符合实际情况。研究结果可为复杂地质条件下边坡的勘察提供一定指导。

In the investigation of landslides,the combination of various methods can accurately identify the geological conditions of landslide,and this combination can improve the work efficiency and reliability of findings quality.In order to explore the comprehensive survey effects of the drilling,high-density resistivity method,and downhole video,their applications in a highway high slope are introduced respectively.In the meantime,the advantages and disadvantages of above three methods are compared.Results show that:the drilling method plays an important role in dividing soil layers;the highdensity resistivity method can identity the distribution and influence of groundwater of the study area;and the underground video method can show the actual situation inside the slope with a panoramic view,which is the most intuitive survey method at present.The combination of the three methods can accurately divide the strati-graphic boundary of the slope and determine the position of the potential sliding surface.The survey results are basically consistent and in line with the actual situation.The study can provide guidance for the investigation of slopes under complex geological conditions.