三峡库区香溪河段典型滑坡变形特征分析

本文从坡形采集入手,对三峡库区香溪河段蓄水后发生变形的滑坡进行归纳统计。统计表明,近水库岸坡为凸形的滑坡更容易发生变形。对香溪河段典型滑坡进行了长期地表位移监测,获得八字门滑坡和白家包滑坡的变形曲线为台阶状,耿家坪滑坡的变形曲线为脉动形。近库水微地貌为凸岸,滑体物质为老滑坡堆积物的滑坡变形曲线为台阶状,变形具积累性;近库水微地貌为凹岸,滑体物质为崩塌堆积物的滑坡变形曲线为脉动形,变形具“弹性”。

Deformation characteristic analysis of representative landslides in Xiangxi River valley in the Three Gorges Reservoir area

Beginning from collecting slope shape,the paper concludes deformed landslides after impounding in Xiangxi River valley in the Three Gorges Reservoir.The data shows that the landslide with convex shape is easy to deform.After monitoring surface displacement of some representative landslides in Xiangxi River,the monitoring data show that Bazimen and Baijiabao landslides' deformation curves are sidestep shape,and Gengjiaping's is pulsatile.When the microtopography near water is convex the landslide's deformation curve is sidestep shape,which is composed of old landslide accumulation,and its deformation is accumulative;while at the concave bank,the landslide's deformation curve is pulsatile,which is composed of dilapidation accumulation,and the deformation is elastic.These understanding will deeply influence on the landslide management and immigration building in the Three Gorges Reservoir.