Practice and cognition for emergency disposal of landslide lake

A landslide lake is formed by watercourse blocking.It is a lake without any specialized designs as well as specific flood discharge facilities.If the dam was to burst,massive hazards would be posed.The experiences and cognition for emergency disposal of landslide lake are summarized.The formation cause,burst mechanism and landslide lake risk evaluation are analyzed.The disposal principle,concept,stage and approaches to addressing the issues are then brought forward.Taking the emergency disposal of landslide lakes due to the Wenchuan earthquake as an example,the disposal practice for the Tangjiashan landslide lake is introduced,including the dam burst mode,dam outburst flood,overall program for emergency risk mitigation,diversion channel scheme and risk elimination.Finally, other practices for emergency disposal of landslide lake are briefly introduced,which could give references on the subject.