Study on the Factors Influencing Deformation of Compound Landslide and the Deep Drainage Effect
Taking the K39+400 Landslide along Wenshan—Malipo Highway as the example,with the characteristics of landslide landform and surface crack distribution and the long-term monitoring information of anti-sliding piles and retaining wall taken into consideration,the landslide deformation modes of the shallow zone Ⅰ,the shallow zone Ⅱ,and the overall deep zone Ⅲ were put forward to study the deformation mechanism of compound landslide with multiple slip zone in mountainous region.The result shows that the existing prevention measures are insufficient to control the landslide deformation,and the compound landslide with multiple slip zone deforms mainly in the zone Ⅰ and Ⅲ.The result of stability calculation reveals that the defective drainage system and too high ground water level are the main factors leading to landslide revival at the present stage.Therefore,it is recommended to set drainage ditch along the perimeter of the landslide and to set horizontal drainage tunnel perpendicular to the sliding direction of landslide in the sliding bed.Next,the effect that the setting mode of drainage tunnel controls the landslide deformation and stability is studied through numerical analysis,and then the revival mechanism of compound landslide with multiple sliding surface is analyzed by the method of inversion.
国家科技期刊平台
NSTL
万方数据
