浙江省兰溪市白坑村泥石流成因分析及评价

通过对发生于1983年5月兰溪市白坑村泥石流地质灾害的调查、访问,从地形条件、固体物源条件、降雨务件及滑坡-泥石流耦合作用关系等分析白坑村泥石流灾害的形成原因.在此基础上,对白坑村泥石流易发程度、发生机率、活动规模、活动强度、溪沟堵塞程度、发生频率等方面进行泥石流活动危险性技术分析,判定该泥石流综合致灾能力强.经分析,...

The Genetic Analysis and Evolution of the Debris Flow in Bai Keng Village, Lanxi City, ZheJiang Province

For the debris flow hazards happened on May 1983,in BaiKeng Village,Lanxi City.In this paper,from the geological conditions,the solid source conditions,the rainfall conditions and the landslide-debris flow coupling function relation and so on,the causes of the disaster are studied.On this basis,the incidence、scale of activity、activity strength and so on are analyzed,and It is concluded that this debris flow synthesis has the strong disaster ability.The analysis is that the upstream of the debris flow ditch is at forming stage,middle and lower of the debris flow at developing stage,thus according to the evaluating indicator of warning area,the warning area of the debris flow is divided into extremely dangerous area of Bai Keng village,dangerous area of Bai Keng village,natural village of the Xishan temple and the Xishan temple cement plant warning area,influenced area of Bai Keng village,and the harmfull degree of warning area are accessed respectively.prevention programs of debris flow and the investigation and evaluation of debris flow disaster due to unreasonable human activities has an important reference.