非饱和膨润土的基本性能研究

Study on the Basic Properties of Unsaturated Bentonite

高放废物深地质处置库中热-水-力环境复杂多变,且非饱和膨润土渗水渗气及其土-水特征曲线又受到基质吸力、温度、含水率、干密度、孔隙比等因素的影响,因此研究非饱和膨润土的渗水渗气及其土-水特征曲线具有重要的意义。在总结国内外研究现状和成果的基础上,提出了考虑体积含水率、体积含气率对非饱和膨润土的渗水渗气及其土-水特征曲线影响的思路。

Thermal-hydro-mechanico is complex and changeable in the geological disposal of high level radioactive nuclear waste disposal,and the water-air permeability,soil-water characteristic curves of unsaturated bentonite are affected by the matrix suction,temperature,water-content,drydensity,void-ratio and so on. Therefore,it has important meaning to study the water-air permeability and soil-water characteristic curves of the unsaturated bentonite. It proposed the idea that considering what the effects on the volumetric soil water content and gas volume rate for the water-air permeability and soil-water characteristic curves of the unsaturated bentonite on the basis of summarizes domestic and foreign research status and achievements.