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采用黄河三角洲沿黄河两岸的7口观测井地下水位、电导率长期记录,配合同时期的河水位和降水蒸发数据,采用仿自相关分析的方法,对地下水动态和河水位变化之间的相关性进行了定量分析。结果表明:调水调沙会使沿河两岸的地下水位抬升,地下水位对调水调沙响应具有延迟效应,延迟时间随离河距离和河床渗透系数大小而变化;调水调沙使黄河南岸2.3 km范围内的地下水质得到改善,受地形坡度和地下水流向的影响,调水调沙对南岸地下水水质改善的效果较北岸显著。
Based on the long-term record of groundwater level and conductivity of seven observation wells in the Yellow River Delta along the Yellow River and the data of river level and precipitation evaporation in the same period, the correlation between groundwater dynamics and river water level changes was analyzed by using the method of Imitation and Autocorrelation Analysis Quantitative analysis. The results show that water and sediment transport will raise the groundwater level along the banks of the Yellow River, and the groundwater level will have a delay effect on the response to water and sediment transport. The delay time will vary with the river distance and river bed permeability coefficient. The groundwater quality within 2.3 km has been improved. Affected by the topographic gradient and groundwater flow, the effect of water and sediment adjustment on groundwater quality improvement on the South Bank is more significant than that on the North Shore.