北京永定河冲洪积扇地下水人工调蓄研究

摘要

地下水模型是研究地下水运动与储存的有效方法之一,可用来进行地下水调蓄研究.以永定河冲洪积扇为例,在分析水文地质条件的基础上,建立地下水模型,利用该模型确定了五种调蓄方案,并以其中一个具有代表性的方案为例对调蓄方案进行效果分析.经计算,研究区的实际最大回灌能力为24243.84×104m3；调蓄后,均衡差由-4033.88×I04m3增加为18538.50×l04m3；水位回升明显,回灌效果显著.利用地下水模型研究地下水调蓄取得了较好的效果.%Numerical simulation is an important method to study groundwater storage and flow. In order to examine the adjustment of groundwater storage by using groundwater model, a groundwater model was built based on hydrogeology conditions of the Yongding river alluvial fan in Beijing. Five adjustment schemes are fixed and their effectiveness is also analyzed. The maximum factual artificial capacity is about 24243. 84 x 104 m3; and after adjustment the balance difference is changed from -4033. 88 x 104m3 to 18538. 50 x 104m3. Effectiveness of artificial injection is apparent and better effect is achieved by using the groundwater model to study the adjustment of groundwater storage.