The Dayantang landslide in Qingtaiping town of Badong county

Shuibuya reservoir

slipped on June 15

2007. The climbing height of surge reached 50 meters

which caused casualty along the channel. In order to solve surge triggered by the Dayantang landslide

the surge is summarized into two kinds of surges

volume-surge and impact-surge

on the basis of the mechanism of landslide surge

respectively. The volume conversation law and the displacement formula of mass below water lever are used to calculated the initial surge height. The decay process of landslide surge is divided into sharp-decay stage and slow-decay stage; and it is assumed that the sharp-decay stage is a kind of exponential decay

and the slow-decay stage is a kind of water head loss with propagation distance in open channel. The propagation height and climbing height of landslide surge along bank are deeply discussed; and the calculation result is compared with survey of climbing surge. The result has reference significance for the research on propagation of landslide surge in the reservoir.