FLUIDIZATION MECHANISMS AND MOTION SIMULATION ON FLOWSLIDES TRIGGERED BY EARTHQUAKE AND RAINFALL
FLUIDIZATION MECHANISMS AND MOTION SIMULATION ON FLOWSLIDES TRIGGERED BY EARTHQUAKE AND RAINFALL
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发表时间：
2005
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通讯作者：
Wang Fa-wu
中科院分区：
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作者：
Wang Fa-wu
通过现场调查、土壤测试和数值模拟，研究了地震引发的月馆泥石流和降雨诱发的山科泥石流的流化机制之间的差异。对于月馆泥石流，在滑动体液化之后，火山碎屑物质的颗粒破碎和快速剪切速率对超孔隙水压力产生的综合作用被认定为主要原因。而对于山科泥石流，在渗透性极低的完全饱和风化泥岩碎屑中调动的低抗剪强度被归因于泥石流的高流动性。
The difference between the fluidization mechanisms of the Tsukidate flowslide triggered by earthquake and the Yamashina flowslides induced by rainfall was examined through field investigations |soil tests and numerical simulations. In the case of the Tsukidate flowslide| after a liquefaction of sliding mass the combination effect of grain crushing and rapid shearing rate of the pyroclastic material on the excess pore pressure generation was concluded as the main reason. While in the case of the Yamashina flowslides the low shear strength mobilized in the fully saturated weathered mudstone debris with a very low permeability was attributed to the high mobility of the flowslides.