摘要
本文通过室内土柱对轻壤土和重壤土饱和、非饱和水动力弥散实验 ,得到了吸附性溶质水动力弥散参数的计算方法 .根据一维饱和弥散实验结果 ,由相应的解析解 ,用简化计算方法求得饱和水动力弥散系数Dsh 和阻滞因子R ;对于一维非饱和弥散实验 ,在分析溶质的水动力弥散理论的基础上 ,推导出求解非饱和土壤水动力弥散系数Dsh (θ)的计算公式 .
Experiments on hydrodynamic dispersion in saturated\|unsaturated light loam and heavy loam soil are carried out. A method for calculation of definite hydrodynamic dispersion parameters for adsorption solute is deduced. According to the data of 1\|D saturated dispersion experiment the saturated dynamic dispersion coefficient and retardation factor are obtained using simplified method.On the basis of theoretical analysis the formula for calculating the solute hydrodynamic dispersion of unsaturated soil is also attained.
出处
《水利学报》
EI
CSCD
北大核心
2002年第3期84-90,共7页
Journal of Hydraulic Engineering
基金
国家杰出青年基金研究项目 (4 972 5 10 2 )的部分内容
