铜琼沟泥石流发育特征及评价

Development Characteristics and Evaluation of Debris Flow in Tongqionggou

金沙江流域为典型的高山峡谷地区,为泥石流易发区。铜琼沟为典型的沟谷型泥石流冲沟,通过对该沟的现场调查,结合易发程度、危险度评价及计算分析,对该沟泥石流发生规模及频次进行详细评价,认为铜琼沟是一条低频泥石流沟,中度易发,危险度中等,为该沟泥石流防治设计工作提供依据。

The Jinsha River basin is a typical alpine valley area,which is prone to debris flow.Tongqionggou is a typical debris flow gully.The scale and frequency of debris flow in this ditch are evaluated in detail through the field investigation,the evaluation and calculation analysis of the degree of vulnerability and risk.through field investigation of the ditch,prone degree,risk evaluation and calculation analysis,the detailed evaluation on the scale and frequency of the gully happen,that copper Joan groove is a low frequency debris flow gully,moderate prone,medium risk,provide the basis for prevention and control of the gully design work.The evaluation results show that Tongqionggou is a low-frequency debris flow gully with moderate prone occurrence and moderate risk,which provides the basis for the design of debris flow control in this ditch.