摘要
金沙江是我国水能资源最为丰富的江河之一,但在金沙江上修建水库,泥石流是经常遇到的地质灾害问题。文章在详细调查了库区地层岩性、构造、滑坡的前提下,结合金沙江某水库区泥石流发育与降雨、地层岩性、构造、滑坡及地形地貌的关系深入探讨了库区泥石流的类型、规模、特征及发育阶段。研究表明:(1)本库区泥石流活动历史久远,泥石流地质灾害活跃,在部分泥石流地质灾害衰退的同时,更多的泥石流沟在逐步形成:(2)水库蓄水,减小了泥石流沟的比降,会在一定程度上降低泥石流的活动性及破坏能力;(3)泥石流对水库的影响主要为输送泥沙,造成水库淤积。
Jinshajiang Rive is one of the rivers in China,which are rich with hydro\|energy resource.However,when we construct reservoir on it,the debris flow is a main geological hazard problem.Based on the investigation of the strata,lithologic characters,structures,and landslides,this paper discusses the type\,scale\,characteristics and developing phrase of the debris flow in the reservoir area,considering the relation between the debris flow and rainfall, lithologic,structure and landslide.The results are:(1)The debris flows in this reservoir in Jinsha Jiang River have a long history and come alive presently.More come into being progressively during part of debris flow declining.(2)When the reservoir stores water,the dropping ratio of the debris flow ditch is minished and its activity and destroy is partly reduced.(3)The influence of the debris flow to the reservoir is transporting mud and sand,making it silted.
出处
《中国地质灾害与防治学报》
CSCD
2003年第3期44-49,共6页
The Chinese Journal of Geological Hazard and Control
关键词
金沙江
水电站库区
泥石流
地质灾害
滑坡
易滑地层
Jinshajing River reservoir
apt-to-slip-stratum
debris flow
landslide
geological hazard
