Lab Introduction
SCI论文：Analysis of the Tangjiaxi landslidegenerated waves in the Zhexi Reservoir, China, by a granular flow coupling model 
发布日期：20170628 点击：956次 
标题：Analysis of the Tangjiaxi landslidegenerated waves in the Zhexi Reservoir, China, by a granular flow coupling model
作者：Bolin Huang, Yueping Yin, Shichang Wang, Jianmin Tan, and Guangning Liu 期刊：Natural Hazards and Earth System Science 卷： 期：17 页：657670 DOI：10.5194/nhess176572017 出版时间：2017 摘要： A rocky granular flow is commonly formed after the failure of rocky bank slopes. An impulse wave disaster may also be initiated if the rocky granular flow rushes into a river with a high velocity. Currently, the granular mass–water body coupling study is an important trend in the field of landslideinduced impulse waves. In this paper, a full coupling numerical model for landslideinduced impulse waves is developed based on a noncoherent granular flow equation, i.e., the Mih equation. In this model, the Mih equation for continuous noncoherent granular flow controls movements of sliding mass, the twophase flow equation regulates the interaction between sliding mass and water, and the renormalization group (RNG) turbulence model governs the movement of the water body. The proposed model is validated and applied for the 2014 Tangjiaxi landslide of the Zhexi Reservoir located in Hunan Province, China, to analyze the characteristics of both landslide motion and its following impulse waves. On 16 July 2014, a rocky debris flow was formed after the failure of the Tangjiaxi landslide, damming the Tangjiaxi stream and causing an impulse wave disaster with three dead and nine missing bodies. Based on the full coupling numerical analysis, the granular flow impacts the water with a maximum velocity of about 22.5 m s−1 . Moreover, the propagation velocity of the generated waves reaches up to 12 m s−1 .The maximum calculated runup of 21.8 m is close enough to the real value of 22.7 m. The predicted landslide final deposit and wave runup heights are in a good agreement with the field survey data. These facts verify the ability of the proposed model for simulating the real impulse wave generated by rocky granular flow events.
