【作者】 何俊；

【Author】 HE Jun (Geotechnical Institute of Hohai University,Nanjing 210098,China)

【机构】 河海大学岩土工程研究所；

【摘要】 膨润土渗透试验存在可重复性差、试验时间长、对试验仪器要求高等缺点。将膨润土看作双重介质,得到粒间孔隙内凝胶态蒙脱石矿物间的距离,应用Poiseuille公式推导出膨润土饱和渗透系数的改进计算方法。用渗透试验结果和其他计算方法验证了计算方法的合理性。这种计算方法可以方便地确定给定蒙脱石含量和孔隙比时膨润土饱和渗透系数。更多还原

【Abstract】 Hydraulic conductivity test has some defects such as weak repeatability,time-consuming.Taking bentonite as dual porous media,the calculation formula of the distance,d₂,between montmorillonite in intraparticle pores is deduced.Improved calculated method of hydraulic conductivity is obtained using d₂ and Poiseuille law.The method is valid through the comparison with results of test and other methods.The method is very convenient to calculate hydraulic conductivity of bentonite of certain montmorillonite content and void ratio.更多还原