摘要
本文在对辽宁省泥石流灾害集中分布区野外考察的基础上,探讨了泥石流灾害的类型和发育规律,并对其潜在危险区进行了预测.
Debris flow in study area usually results from collapse and landslide of surface weathered layer on steep hillside, hence forming a special type of its kind, the slope-valley pattern debris flow.The advantageous conditions for the development of debris flow here include steep slopc,large height of relief,active tectonics, fracture and weathering degree of rocks on hillside and abundant precipitation. Big earthquakes and artificial factors also play an important role in producing debris flow.For prediction of debris flow hazard, we divided Liaoning Province into 165 units and make a synthetical evalution of the factors probably causing debris flow for every unit. The analytic result shows that the risk areas of debris flow are located in Dandong Prefecture in the eastern Liaoning mountainous region and around Chaoyang City in the western Liaoning mountainous region.
出处
《中国地质灾害与防治学报》
CSCD
1990年第4期46-54,共9页
The Chinese Journal of Geological Hazard and Control
关键词
泥石流
崩塌
滑坡地质灾害
蠕滑
降雨量
debris flow, scree, landslide geological hazards, creeping, rainfall
