饮马河中游地下水库可行性论证

饮马河中游位于吉林省长春市以东50 km处，具有构建河谷型孔隙地下水库的潜力条件，是长春市重要的战略性后备水源地之一。在满足区内用水和向下泄流需要的前提下，研究区在理论上可以从泄流节流和诱发补给中得到1.88×10⁸m³/a的调蓄水源，但该调蓄水源年内、年际变化剧烈。以第四系砂砾石为主要赋水介质的目标含水层最大调蓄能力为8.21×10⁸m³，在目前条件下实际动用38.98%，另有4.98×10⁸m³的潜力空间。通过模拟布置壅水坝、引渗场、集中采水井等工程，合理干预水更替条件，理论上可以得到8 197.9×10⁴m³/a的采水量。结合实例给出一套能够从调蓄水源的来源、展布规律、质量和数量，调蓄空间的圈闭性、结构和规模，人工干预地下水开采和补给的位置、方式和强度3个方面系统进行地下水库可行性分析、计算和评价的思路方法。

Feasibility Demonstration on Groundwater Reservoir in the Middle Reaches of Yinma River

The middle reaches of Yinma River,located 50 km east to Changchun in Jilin Province, is a potential place to build a pore groundwater reservoir,which will be an important strategic water resources field for Changchun City. Based on conditions of satisfying local water demand and no occurrence of environmental side effects, regulated water resources of 1.88×10⁸m³/a can be obtained from saved discharge and induced recharge, but it will change largely over time. Maximal regulation volume is 8.21×10⁸m³ and potential regulation volume is 4.98×10⁸m³ for the objective aquifer composed of Quaternary sands and grits. In the case of artificial engineering for water exchange, groundwater reservoir in the middle reaches of Yinma River can supply water resources of 8 197.9×10⁴m³/a theoretically.Just as a case study, this paper shows an overall idea about how to analyze and assess the feasibility of ground water reservoir,from three aspects: sources,distribution, quality and quantity of regulated water; confined boundaries, structure and volume of regulating space; sites, ways and capacity of artificial exchanging engineering.