三相饱和土爆炸液化机理模型研究

三相饱和土是由固体土颗粒、水和少量封闭气体组成的混合物介质。在爆炸压缩波荷载作用下，三相饱和土极有可能液化，这主要与孔隙流体与土骨架动力响应之间的差异有关，从微观力学角度着手，通过选取适当的坐标系，明确各相间相对运动和变形的物理意义，建立起研究三维条件下三相饱各土爆炸液化的机理模型。

Study on Blast-induced Liquefaction Model for 3-phase Saturated Soil

Three phase saturated soil consists of solid particles, water and a small amount of trapped air. It is prone to be liquefied under blast compressive wave loading, mainly because of the difference between dynamic responses of pore fluid and the solid skeleton. The theoretical model of blast induced liquefaction was constructed herein on the basis of micro mechanics, in which the small strain limit was removed, and the inertial effect and the interaction between pore fluid and solid phase were both included. The study is carried out within 3 dimension space.