摘要
库区处于云贵高原西部、青藏高原东南缘,为中国西南地区的活动构造区,显著的内、外动力地质作用致使区内地质灾害十分严重。经野外调查发现,区内主要的地质灾害类型为崩塌、滑坡、泥石流等,且主要集中分布在金江桥以东的高山峡谷区;在实际调查库长为100km的河谷段,共发育着81处地质灾害点,总平均线密度(D)为0.81个/km,其中滑坡为区内最主要的地质灾害,共发育59处,占总灾害点的72.84%。在野外地质调查的基础上,着重阐述了库区段主要地质灾害的类型、发育特征和地质灾害与工程安全的关系,为工程的规划和地质灾害的治理提供科学依据。
The Ludila reservoir hydropower station is located in the western part of Yunnan-Guizhou Plateau, southeast rim of the Tibetan Plateau, which is the most tectonically active region in southwest China, intensive internal and external geological process has led to widespread potential geohazard within this region. Through field geological investigation, it's found that the major local geohazard types include rockfall, landslide and debris flow. Those geohazards are highly concentrated in the high mountain valley area, east of Jinshajiang Bridge. 81 geohazard points are identified 100km along the river; average density is 0.81 per kilometer. Among which landslide is the most important geohazard, which amounts to 59, accounts for 72.84%. On the basis of field investigation, the thesis detribes the main geohazard types, development characteristics, relationship between geohazards and engineering harmfulness, which can be provided as scientific information for project planning and prevention of geological hazards.
出处
《地质通报》
CAS
CSCD
北大核心
2009年第8期1108-1117,共10页
Geological Bulletin of China
基金
中国地质调查局项目<西南三江地区区域地壳稳定性评价及分区图>(编号:1212010741404)资助
关键词
金沙江
鲁地拉电站库区
地质灾害发育特征
工程危害性
Jinshajiang River
Ludila reservoir hydropower station
geohazard development characteristics
engineering harmfulness