期刊论文

Impacts of Marginal Water on Water Transport Parameters of Red Soil and Its Process Simulation

中文

水土保持学报

1009-2242

2017

31

5

170-175

10.13870/j.cnki.stbcxb.2017.05.027

国家自然科学基金项目（41471185） 湖南省教育厅科学研究重点项目（15A084）

本校为第一机构

为了探究非常规水水质对亚热带红壤水分运移参数的影响,采用蒸馏水(CK)、再生水(RW)、稀释2,4,6倍再生水(RW-D2、RW-D4、RW-D6)和生活污水(WW)等6种不同水质的非常规水模拟红壤水分入渗过程,利用水平土柱吸渗法测定红壤湿润锋运移速率和水分扩散度,应用压力膜仪法测定了土壤水分特征曲线并且借助van Genuchten(VG)模型提取了相应的土壤残余含水量θr、土壤饱和含水量θs、α和n等特征参数值。结果表明:不同水质入渗下红壤湿润锋运移速率、水分扩散度均存在着一定差异,湿润锋运移速率由快到慢分别为V_(CK)≈V_(RW-D2)>V_(RW-D6)≈V_(RW-D4)>V_(WW)>V_(RW);在同一含水率下D_(RW-D6)(θ)> D_(RW-D4...

For the exploration of how the marginal water influenced the subtropical red soil's water transport parameters,different infiltration experiments were carried out with distilled water(CK),reclaimed water(RW),2times diluted,4times diluted and 6times diluted reclaimed water(RW-D2,RW-D4and RWD6), wastewater(WW).The horizontal soil column infiltration absorption method was adopted to measure the transport velocity of wetting front and the water diffusion degree of the red soil and the pressure membrane method was applied to measure the water charac...