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石川河河谷阶地区地下水资源长期大量超采,致使一定区域的含水层被疏干,利用疏干的含水层储水空间进行水资源的人工调蓄对恢复区域地下水位意义重大。对此,设计并模拟了在维持开采、压缩开采和增加开采的基础上进行人工回灌等调蓄方案,对石川河河谷区阶地区进行水资源人工调蓄,并分析了各方案下的地下水位恢复情况。结果表明,地下水调蓄可显著改善该区域地下水的失衡状况,增加回灌量与减少开采量相结合的调蓄方案,使地下水环境的恢复效果明显。在压缩开采量的基础上,可采取分季节人工回灌4.6×107 m3/a的方案;在增加开采量的基础上,可采取分季节人工回灌5.4×107 m3/a的方案。研究成果可为区域地下水资源恢复工作提供决策依据。
The groundwater resources in the Ishikawa River valley area have been overexploited for a long time. As a result, the aquifers in a certain area have been dredged. It is of great significance to reclaim the groundwater table by using the dredged aquifer water storage space. In this regard, we designed and simulated a land-saving plan for reclamation on the basis of sustaining exploitation, compressing and mining, and increasing reclamation so as to manually store and manage water resources in the district of Ishikawa River Valley and analyzed groundwater Bit recovery situation. The results show that groundwater storage can significantly improve the imbalance of groundwater in the area, and increase the combination of recharge and decrease of production. The recovery plan of groundwater is obvious. On the basis of the amount of compression exploitation, a scheme of artificial recharge of 4.6 × 107 m3 / a in different seasons can be adopted; on the basis of increasing the amount of extraction, artificial sap irrigation of 5.4 × 107 m3 / a can be adopted in different seasons. The research results can provide decision-making basis for the regional groundwater resources restoration.