摘要
滑坡防治的基础是确定滑坡的空间分布特征、滑动面的位置和滑体的物质组成。在研究区地质调查过程中,对滑坡路段的地形图进行测绘,查明滑体及其周围区域的地表形态;利用钻探和物探相结合的方法探明地层以及地质构造的空间分布。以地形图、钻探、物探等工程地质勘察资料为基础,采用Surpac软件,将这些离散的地质信息构建直观的、能够逼真反映区域地质结构的三维地质模型。利用三维地质模型判断该滑坡属于推移式顺层滑坡,滑动面位于第四系松散层与白垩系泥岩、粉砂岩的交界面处,滑坡后缘位于加宽路基范围之内,直接影响加宽路基的稳定性。
The basis of landslide prevention includes determination of the spatial distribution of landslide,sliding surface position and composition of slip mass.In the process of geological survey in research area,topographic map of landslide section was mapped,and the surface morphology of sliding body and surrounding area were identified;Spatial distribution of stratum and geological structure were obtained combining with drilling and geophysical method.Based on the topographic map,drilling and geophysical data as well as Surpac software,the discrete geological information is transformed into 3D geological model which is intuitive and can realistically reflect the regional geological structure.The landslide is judged to be impellent along level landslide by the model.The sliding surface is located at the interface of quaternary system loose bed with cretaceous mudstone and sandstone.The landslide edge is in the scope of widened subgrade,which directly affects the stability of the subgrade.
出处
《森林工程》
2011年第2期61-63,共3页
Forest Engineering
基金
黑龙江省交通厅重点项目(2009-09)
