水泥潜入土壤方式对土壤水入渗能力的影响研究

Influence of Different Ways for Cement Filtering into the Soil on the Infiltration Capacity of Soil Water

基于水泥随入渗水潜入土壤表层的入渗试验,分析了水泥潜入土壤的方式对土壤水入渗能力的影响。试验表明:水泥随土壤渗流水潜入土壤后,间歇12h开始供水的方式可以明显地降低土壤水分的入渗能力;间歇0h(添加水泥后立即供水)方式对降低土壤水分入渗能力的效果不是很明显。水泥添加方式的不同直接影响了水泥在土壤中聚合和凝结效果的差异,从而造成土壤孔隙度改变程度大小的不同,最终导致对土壤水入渗能力的影响不同。研究结果对于防止污水中污染物向地下水运移有重要的现实意义。

Based on a series of tests on cement infiltration into the soil surface layer together with seepage water, this paper analyzes the influence of different ways for cement filtering into the soil on the infiltration capacity of soil water. The results show that after cement filters into topsoil with seepage water, a way of water supply within 12 hours＇ intermittence can significantly reduce soil water ＇s infiltration capacity; however, the reduction effect of this infiltration capacity with the way of 0 hour＇s intermittence, which means supplying water immediately after cement＇s infiltration, is not obvious. Different ways of adding cement have direct influence on the effect of cement polymerization and setting in the soil, which results in different degrees of soil porosity change, and ultimately influence the soil infiltration capacity. The experimental results have important practical significance for preventing the polluting chemicals in sewage permeating the ground water system.