Observation and modeling on irregular purple soil water infiltration process

查看全文 作　　者：CHENG Dong-[1]bing;DONG Lin-[1]yao;QIAN [1]Feng;SUN [1]Bei

机构地区：[1]Changjiang River Scientific Research Institute, Changjiang Water Resources Commission, Wuhan 430010, China

出　　处：《Journal of Mountain Science》索引2017年第14卷第6期,共10页

基　　金：supported by the National Natural Science Foundation of China (Grant No. 41201268) 摘　　要：The infiltration process is a critical link between surface water and groundwater. In this research, a specific device to observe infiltration processes in homogeneous and heterogeneous soils with triangular and inverted triangular profiles was designed, and the Green-Ampt model was employed for the process simulation. The results indicate that(1) the wetting front in coarse texture soils transports faster than in fine texture soils;(2) for the homogeneous case, the wetting front in triangularshaped soils transports faster than the inverted triangular type, but the triangular-shaped soils show a lower infiltration rate;(3) in the initial step, the wetting front in triangular-shaped soils shows higher transport speed, but depicts lower speed with increase in the time;(4) both the wetting front and infiltration rate show a significant exponential relation with the time. From these findings, an empirical model was developed which agrees well with the observed data and provides a useful method for this field of soil research. 关键词：入渗过程过程模拟 GREEN-AMPT模型紫色土观测传输速度三角形湿润锋

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Observation and modeling on irregular purple soil water infiltration process

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