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首页> 外文期刊>Canadian Geotechnical Journal >Scaling law of static liquefaction mechanism in geocentrifuge and corresponding hydromechanical characterization of an unsaturated silty sand having a viscous pore fluid
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Scaling law of static liquefaction mechanism in geocentrifuge and corresponding hydromechanical characterization of an unsaturated silty sand having a viscous pore fluid

机译：离心机静态液化机理的标度律及含粘性孔隙流体的不饱和粉质砂的流体力学特征。

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摘要

Fast landslides induced by rainfall impose considerable damage on infrastructure and cause major casualties worldwide. Static liquefaction is one of the triggering mechanisms mentioned frequently in the literature as a cause of this type of landslide. The scaling laws required to model this mechanism in the geotechnical centrifuge are developed, and it is shown that either a reduction in the soil pore size or use of a viscous pore fluid is needed to unify the time scaling factors of contractive volume change of the saturated voids and dissipation of the excess pore pressure generated. The latter option was used in this research; therefore, the influences of the viscous pore fluid on the hydromechanical characteristics of a silty sand were investigated. Subsequently, geocentrifuge tests were conducted to compare the behaviour of a slope having a viscous solution as the pore fluid with that of a model with water as the pore fluid. Both slopes were subjected to rainfall, and the evolution of the pore pressure and surface movements were monitored.
机译：降雨引起的快速滑坡对基础设施造成了相当大的损害，并在全球范围内造成重大人员伤亡。静态液化是文献中经常提及的引发此类滑坡的原因之一。建立了在岩土离心机中对该机理进行建模所需的比例定律，结果表明，需要减小土壤孔径或使用粘性孔隙流体来统一饱和土收缩体积变化的时间比例因子。产生的多余孔隙压力的空隙和消散。这项研究使用了后一种方法。因此，研究了粘性孔隙流体对粉质砂岩流体力学特性的影响。随后，进行了地球离心试验，以比较具有粘性溶液作为孔隙流体的斜坡与以水作为孔隙流体的模型的行为。两个斜坡都受到降雨的影响，并监测了孔隙压力和地表运动的演变。

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