三峡水库库岸崩滑体处理问题初探

On treatment of landslide masses in TGP reservoir bank

长江三峡水库库岸存在１ ３００ 余处崩塌、滑坡体，水库蓄水和运行调度中水位变动较大，将对其中一些崩滑体的稳定性产生不利影响，诱发或加剧其失稳变形，损坏建筑物、堵塞河道或产生涌浪，导致人员伤亡和财产损失，２００３ 年三峡水库蓄水位达到１３５ ｍ ，因此需要尽早开展崩滑体处理方案研究。崩滑体在体积大小、稳定状态、危害程度方面都是千差万别的，要针对不同情况分类处理，对大多数可能产生变形失稳的崩滑体应进行监测和预报，对可能产生危害的则应进行多方案比较后决定采取移民搬迁或工程治理措施，如排水、减载。

Morethan 1 300landslide massesexistalong TGPreservoirbank.Theimpoundmentofthereservoirandlarge variation of waterlevelduringitsoperation willproduce unfavourableinfluence onthestability ofsomelandslide masses,and induceor intensify their unstability and deformation.Landslide will damage structures,blockade river channel or produce surge,and bring aboutcasualties and propertylosses.The waterlevelofTGPreservoir willbeimpoundedto135 m in 2003, sothe studyaboutthetreatmentschemesforthelandslide massesshould becarriedoutassoon aspossible.Differenttreatment measuresshould betaken in thelightofthe volume,stability state and endangerment extent of differentlandslide masses . Monitoring andforecastingshould be carried outforthe mostoflandslide masses which possiblylose stability.To dangerous landslide masses,varioustreatmentschemesshould be compared soasto determine whetherresettlingtherelocatees ortaking engineeringtreatment measures,such as waterdrainage,loadreduction,anchorage,supporting and retaining works.