汾河口傍河水源地激发补给量研究

Induced Recharge to Water Source Site Adjacent to River in Fenhekou, Shanxi

该文阐述傍河水源地地下水资源构成和补给特性。利用野外试验与室内数值模拟相结合方法,分析汾河口傍河水源地可采水资源量,数值模型刻画黄河实际摆动边界,考虑潜水延迟给水和极端干旱气候条件等多种方案;利用环境同位素技术追踪傍河水源地开采条件下的河水激发补给过程和补给强度。研究表明,在渗透性较好的常年性河流旁建立的水源地,具有抵御极端气象、水文环境以丰补歉的能力,枯水年动用的含水层储存量,丰水年恢复性强。

In this paper, the groundwater resource composition and replenishment characteristics of water source sites adjacent to the river have been studied in combination with the case study. The analysis has been made on the exploitable groundwater quantity of water source site adjacent to the river in Fenhekou, Shanxi Province based on the field experiment and lab numerical simulation. The numerical model presents the sway boundary of the Yellow River and many factors such as the water yield delaying of phreatic water and the extremely-arid climate have been taken into account in the calculation. With the environmental isotope technique, the induced recharge of river water under pumping condition in water source site adjacent to the river has been probed. The study results show that the water source site adjacent to the perennial river with good permeability has the following advantages: it has the ideal adjusting capability in various climatic conditions; the aquifer reserve pumped during the drought year will be easily recovered during the water-abundant year.