论文部分内容阅读
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。
Construction of high-level nuclear waste disposal underground, urban heating pipes and buried high-voltage cables and other projects, making the consideration of temperature of unsaturated soil permeability more and more attention. Based on the study of soil-water characteristic curves of unsaturated soils considering temperature effect, a method of predicting the relative permeability coefficient of unsaturated soils based on the soil-water characteristic curve is established, and an indirect method of predicting the relative permeability coefficient of unsaturated soils at different temperatures is established method. The expression established is for the entire suction range of the soil-water characteristic curve, making it more general in its application. Based on the test results of soil samples of MX-80 bentonite and loess, the relative permeability coefficients at different temperatures with the change of suction were predicted, and satisfactory results were obtained.