泄流坡滑坡变形特征及成因分析

Landslide Deformation Characteristics of Mud Flow Slopes and Analysis of the Reasons

泄流坡滑坡位于甘肃省舟曲县境内的白龙江左岸，滑体长２ ６００ ｍ ，总体积约５ ０００ 万ｍ３ ，为一典型的断裂带滑坡。２０ 世纪以来该滑坡曾发生８ 次滑动，滑体明显分为上下两段，目前总体上滑体仍处于匀速滑动状态，日平均滑动达２０ ｍｍ 以上，局部滑动活跃。滑坡变形主要受新构造运动、地震活动、断裂破碎带、软弱地层影响，同时受降水、江水冲淘和人类活动作用。有关部门应加大投入对该滑坡进行治理，以保证人民生命财产安全。

Located on the left bank of Bailong river in Zhouqu county of Gansu province, the landslide on mud flow slope is one of typical fracture zone landslide with length of 2600 meters and total volume of about 50 million m 3. It has slipped 8 times since the 20th century. The slide body is evidently divided into upper and lower parts. The landslide is overall in a even slide state with a daily speed of 20 mm and some parts slipped actively. The deformation of the landslide is mainly caused by new tectonic movement, earthquake, fracture zone and influence from soft stratum, and as well as by rainfall, river erosion and human activities. It is suggested that the relative departments should take control measures to the landslide to ensure the safety of people's life and property.