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FLUIDIZATION MECHANISMS AND MOTION SIMULATION ON FLOWSLIDES TRIGGERED BY EARTHQUAKE AND RAINFALL
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Abstract 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.
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Received: 20 September 2004
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MEI Xiancheng1, 2, CUI Zhen1, 2*, SHENG Qian1, 2, CHEN Jian1, 2, FEI Yang1, 2, TANG Langzhou1, 2, ZHAO Xu3, LI Ruohan4, HUANG Jingqi5. Physical modeling on the coupling effect of strong shaking-fault movement to a fault-crossing tunnel (I): Experimental system and method[J]. , 2026, 45(5): 1304-1320. |
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