Ezperimental Research on Network Characteristics of Soil Non-uniform Flow
Preferential flow refers to such a flow transport pattern that water and solute flows round the soil matrixes, which contributes to accelerate the movement velocity in the soil, and soil recharge happens on the whole inlet boundary. Preferential flow is produced by a large number of macropores and fractures in the soil, such as root and wormhole, so it is of great importance to groundwater recharge due to its quick movement. For knowing the process of infiltration recharge, evaluating the recharge source underground water and analysis of subsurface water pollution, its great significant to research the influence of preferential flow to soil moisture transport. In this study, according to the principle that iodine turns to blue after reacting with starch, outdoor tracer experiments of heterogeneous flow in clay loam are designed, from which the heterogeneous flow patterns are studied.
Iodine-starch staining Preferential flow Flow patterns
ZHU Lei WANG Kang ZHOU Qing
College of Agricultural Engineering, Hohai unversity, Nanjing, 210098, China State Key Laboratory of Water Resources and Hydropower Engineering Sciences(Wuhan University), Wuhan
国际会议
2009 International Forum on Porous Flow and Applications(第十届全国渗流力学学术会议)
武汉
英文
959-963
2009-04-26（万方平台首次上网日期，不代表论文的发表时间）