Water exchange between groundwater and main stream of Shaying River
Water exchange between groundwater and main stream of Shaying River
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发表时间：
2012
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通讯作者：
Liu Pei-gui
中科院分区：
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作者：
Liu Pei-gui
建立了河流与地下水水交换数值模型，对沙颍河界首站至富阳站段的水交换进行了研究。结果表明，河流泄放是地下水泄放的主要方式，地表水与地下水之间的水交换特点是地下水补充地表水。水交换量与导水率(C)直接相关，且呈近似指数关系。当C=100 m2/d时，河流向地下水的泄流量为丰水期为4.77×10-6 m3/(s·km)，沿河1 000 m以内的潜水位受补给影响较大；枯水期，地下水向河道流量为7.26×10-3 m3/(s·km)。过度开采地下水可能导致地下水补给减少，对枯水期沙颍河河道流量产生负面影响。季节。
A numerical model of water exchange between a river and groundwater was established to study the water exchange in the section from Jieshou Station to Fuyang Station of the Shaying River.The results show that discharge through rivers is a major way in which groundwater discharges,and the water exchange between surface water and groundwater is characterized by groundwater replenishing surface water.The water exchange volume is directly correlated with hydraulic conductivity(C),and their relationship is nearly exponential.When C=100 m2/d,the discharge from the river to groundwater was 4.77×10-6 m3/(s·km) during the high flood stage period,and the phreatic water table within 1 000 m along the river was significantly affected by recharge;and in the dry season,the discharge from groundwater to the river was 7.26×10-3 m3/(s·km).Over-exploitation of groundwater may lead to a decrease in groundwater recharge and have a negative effect on river discharge in the Shaying River in the dry season.