GEOMECHANICAL MODEL EXPERIMENT ON QIANJIANGPING LANDSLIDE IN THREE GORGES RESERVOIR AREA
GEOMECHANICAL MODEL EXPERIMENT ON QIANJIANGPING LANDSLIDE IN THREE GORGES RESERVOIR AREA
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Xiao Shirong;Liu De-fu;Jiang Fu-xing;J. Xiaolan
中科院分区：
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作者：
Xiao Shirong;Liu De-fu;Jiang Fu-xing;J. Xiaolan
对三峡库区钱江坪滑坡进行了地质力学模型试验。以微震和测温仪为主要的试验测量方法，研究了滑坡发生的机理，并通过微震监测预测了滑坡发生的可行性。试验结果表明：水库初始蓄水期前强降雨对滑坡稳定性影响不大；水库水的抬升压力只会诱发滑坡的蠕变，而水浸衰减导致滑区抗剪强度降低才是滑坡的真正破坏原因。实验获得的微震事件清晰地展示了滑坡的变形-破碎-破坏过程，揭示了滑坡从滑趾到滑中部的滑带破坏过程；验证了微震监测预报滑坡的可行性。
A geomechanical model experiment on Qianjiangping landslide in the Three Gorges Reservoir area is conducted. Taking microseism and centigrade meters as the main experiment gauging methods,the mechanism of the landslide is studied and the feasibility of landslide is forecast by micro-seismic monitoring. The experimental results show that the strong rainfall before the initial reservoir impoundment period has little influence on the landslide stability;and the uplifting pressure due to the reservoir water will only induce the creeping of landslide,while the shear strength reduction of slippery zone by attenuation of water immersion is the true failure cause of the landslide. The microseismic events achieved from the experiment display the distortion-breakage-destruction process of landslide clearly,revealing the slippery zone destruction process that is from the toe to the middle of landslide;and the feasibility of landslide forecast by microseismic monitoring is verified.