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中文摘要：
高放核废料地下处置、城市供热管道及埋地高压电缆等工程建设的进行,使得考虑温度影响的非饱和土渗透性能越来越受到人们的重视。在考虑温度效应的非饱和土土-水特征曲线研究基础上,结合利用土-水特征曲线预测非饱和土相对渗透系数的方法,建立了一种预测不同温度下非饱和土相对渗透系数的间接方法。所建立的表达式是针对土-水特征曲线的整个吸力范围,从而使得其在应用上更具一般意义。利用MX-80班脱土和黄土土样的试验结果,对不同温度下相对渗透系数随吸力的变化进行了预测,得到了令人满意的结果。
英文摘要：
Research interest in the temperature effect on the permeability of unsaturated soils is growing as a result of an increasing number of geomechanical problems involving thermal effects,such as high-level nuclear waste disposal,buried heat-supply pipelines and high-voltage cables.Based on the research of temperature effects on soil-water characteristic curve（SWCC） of unsaturated soils,an indirect method for predicting permeability coefficients of unsaturated soils at different temperatures is presented.by using the method of relative permeability coefficients from the SWCCs.The new expressions are made for the entire suction range of SWCC;and hence it has a broader applicability.Based on the experiments of MX-80 bentonite and loess,model predictions of relative permeability coefficient at different temperatures with suctions are made,which show satisfactory results.
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