【作者】 于洋； 武佳； 夏达忠；

【Author】 YuYang;WuJia;Bureau of hydrology, Haihe Water Conservancy Commission, Ministry of water resources;Hydrological survey and research center of Hebei Province;

【机构】 水利部海河水利委员会水文局； 河北省水文勘测研究中心； 河海大学；

【摘要】 2016年7月18日至20日,海河流域自西南至东北出现了一次强降雨过程,河北省面平均雨量达158.9mm,为研究此次暴雨洪水对河北省地下水超采区浅层地下水的影响,通过结合暴雨过程中的降水量、产流量和监测得到的地下水位数据分析了河北省地下水超采区及受影响较大的个别地区的地下水动态变化特征,并探讨了相关成因。研究结果表明:(1)"16·7"暴雨洪水对河北地下水埋深较小的区域补给路径短、速度快,地下水位变化响应迅速;对地下水埋深较大的区域补给路径长、速度缓慢,地下水位变化响应滞后约2天。(2)地下水位回升幅度主要受降水量的区域分布差异和地下含水层组埋深、岩性结构等入渗补给条件的综合影响。河北山前地下水超采区地下水回升幅度较大,中东部地下水超采区回升幅度较小。(3)"16·7"暴雨洪水对埋深较大的山前地下水超采区和埋深较小的中东部地下水超采区,地下水补给均能保持较长时期的调节作用。更多还原

【Abstract】 On July 18 solstice 20, 2016, there was a heavy rainfall process from southwest to northeast in Haihe River Basin, and the average area rainfall in Hebei Province reached 158.9 mm. In order to study the impact of the rainstorm flood on shallow groundwater in the plain area of Hebei Province, the dynamic variation characteristics of groundwater in the plain area of Hebei Province and some affected areas were analyzed by combining the precipitation, runoff yield and groundwater level data during the rainstorm process, and the related causes were discussed. The results show that:(1) The "16·7" rainstorm flood had a short recharge path and a fast recharge speed to the area with small groundwater depth in Hebei Province, and the response to the change of groundwater level was rapid; In the area with large groundwater depth, the recharge path is long and the speed is slow, and the response of groundwater level change lags about 2 days.(2) The recovery of groundwater level is mainly affected by the regional distribution difference of precipitation and the infiltration and recharge conditions such as the buried depth and lithologic structure of underground aquifer group. Groundwater in piedmont plain area of Hebei Province has a large rebound, while in central and eastern plain area it is small.(3) The "16·7" rainstorm flood can maintain a long-term regulating effect on groundwater recharge in the piedmont plain area with larger buried depth and the central and eastern plain area with smaller buried depth.更多还原