云南省寻甸县金源老干沟泥石流灾害与治理

通过实地考察 ,分析了金源泥石流形成背景 ,对泥石流防治工程设计必需的水文参数进行了讨论 ,介绍了治理方案的选择和确定 ,重点讨论了 1 0 0 0m长排导糟工程的设计。

DEBRIS FLOW DISASTER AND ITS CONTROL OF LAOGAN RAVINE,JINYUAN,XUNDIAN,YUNNAN

Located on the upper reaches of Xiaojiang River in northeastern Yunnan,Jinyuan is one of the zones where debris flow and landslides are concentrated,frequent and disastrous.Notable are the debris flows Laogan Ravine,which damage villages,erode fertile farmland to turn vast streches of it into desert flat.This paper makes a general survey of the debris flows at Jinyuan,analyzes the background of their occurrences,discusses the parameters necessary for the design of corrective works against debris flows,and describes how to select and decide the remedial scheme.Emphasis is placed on discussing the desing of a 1000 m_long diversion channel which has been implemented since 1992. So far it has been completed. 50 check dams have been constructed in the source area in combination with the bioloical measures.In this way,debris flow hazards are defectively but under control so as to achieve the remarkable ecological and socio_economical benefits.