Dynamic process simulation with a Savage-Hutter type model for the intrusion of landslide into river  

作　　者：LIU Wei He Si-ming Ou Yang Chao-jun 

机构地区：[1]Key laboratory of Mountain Hazards and Surface Process, Chinese Academy of Science [2]Institute of Mountain Hazards and Environment, Chinese Academy of Sciences [3]Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences

出　　处：《Journal of Mountain Science》2016年第7期1265-1274,共10页山地科学学报（英文）

基　　金：Financial support from the National Science Fund for Distinguished Young Scholars (Grant No.41225011);the NSFC (Grant No. 41272346);the Information technology project of the Department of transportation (2014364J03090);the STS project of Chinese Academy of Sciences (project No. KFJ-EW-STS-094)

摘　　要：Natural damming of rivers by mass movements is a very common and potentially dangerous phenomena which has been documented all over the world. In this paper, a two-layer model of Savage-Hutter type is presented to simulate the dynamic procedure for the intrusion of landslide into rivers. The two-layer shallow water system is derived by depth averaging the incompressible Navier-Stokes equations with the hydrostatic assumption. A high order accuracy scheme based on the finite volume method is proposed to solve the presented model equations. Several numerical tests are performed to verify the realiability and feasibility of the proposed model. The numerical results indicate that the proposed method can be competent for simulating the dynamic process of landslide intrusion into the river. The interaction effect between both layers has a significant impact on the landslide movement, water fluctuation and wave propagation.

关 键 词：Landslide Two-layer model Savage Hutter type Numerical simulation 

分 类 号：P642.22[天文地球—工程地质学]