济宁-汶上超采漏斗区水资源人工调蓄方案研究

The Artificial Regulation Groundwater Excess Exploited Funnel between Jining and Wenshang

地下水的长期大量集中开采,导致济宁-汶上区域性超采漏斗的形成,并引发了一系列环境地质问题。地下水超采所疏干的含水层,为水资源的人工调蓄提供了巨大的储水空间,若采用科学的人工调蓄方案可使漏斗区地下水位得以恢复。运用Visual Modflow软件分别模拟了在维持现状开采条件下、约束条件下、可持续利用条件下对济宁-汶上超采漏斗区的三种人工调蓄方案。研究结果表明,在可持续利用条件下(逐年压缩地下水开采量5%)实施人工回灌(0.2×108m3/a),地下水位恢复效果最佳,到2011年末,漏斗中心地下水位可回升25.19 m。

Large quantity of groundwater pumping in an area forms regional groundwater excess exploited funnel, and leads to a series of environmental and geological problems. Groundwater excess exploited funnel can form evacuating empty aquifer and empties out huge apace for artificial adjust and sluice of water resources. The water level can be recovered by artificial regulation of water resources in the empty underground space of the excess exploited funnel. The authors designed and simulated three artificial regulation projects in the excess exploited funnel zone in Jining--Wenshang using Visual Modflow software, which are current pumping, pumping under constraint conditions, and artificial recharge based on sustainable utilization of pumping. The result indicates when executing artificial recharge（0. 2 × 10^8 m^3/a） based on sustainable utilization（reducing the quantity of groundwater pumping by 5% every year）, the recovery effect of groundwater level is more obvious than other projects, and groundwater level of the centre of excess exploited funnel will be recovered by 25.19 m up to the end of 2011.