The osmotic pressure test was developed to determine the unknown , finite strain consolidation coefficient and convection coefficient in the mathematical model . the two coefficients both varied with effective stress and depth and were functions of initial void ratio , compressibility , permeability and permeability derivative along depth . a precise time step integration method was proposed to solve the finite strain osmotic consolidation equation with varied coefficients 設(shè)計(jì)滲壓固結(jié)試驗(yàn)確定理論模型中的待定系數(shù)有限應(yīng)變固結(jié)系數(shù)和有限應(yīng)變固結(jié)對(duì)流項(xiàng)系數(shù),這兩個(gè)系數(shù)均為隨有效應(yīng)力和土層深度變化的量,并且體現(xiàn)軟土初始孔隙比,壓縮性、滲透性及其沿深度變化等因素的綜合影響。