摘要
通过总结丰沛平原区水文地质条件和特征,对该区地下水开采利用现状及潜在水源地进行分析,计算了华栖隆起区岩溶水可利用资源量,探讨裂隙岩溶水利用的可行性。研究表明:丰沛平原区地下水主采层位为中上更新统孔隙含水层和新近系—下更新统孔隙含水层,已形成丰县城关—孙楼—常店和沛县—龙固2个大型超采漏斗区,总面积超过750 km~2,引发了大面积地面沉降;华栖隆起区为裂隙岩溶水的富水地段,总可采资源量为667.51万m~3/a,可作为潜在水源地进一步开展地下水勘查评价工作;裂隙岩溶水过量开采可能引发地面沉降、岩溶地面塌陷等地质灾害,后期应对裂隙岩溶水开采情况进行长期监测,合理开发利用水资源。华栖隆起区岩溶水距离城区近,水量大,水质好,开发难度小,具有可观的经济价值。
By summarizing hydrogeological conditions and characteristics of Fengpei Plain area, the authors has analyzed the exploitation and utilization conditions of groundwater and potential water source. And the available resources of karst water in Huaqi uplift were calculated and the feasibility of karst water utilization was discussed. The results show that the main groundwater level in the study area is middle and upper Pleistocene pore aquifer and Neogene-Lower Pleistocene pore aquifer, which have already formed two super large funnel areas of Chengguan of Fengxian-Sunlou-Changdian and Peixian-Longgu, with the total area exceeding 750 km~2, causing large ground subsidence area. Huaqi uplift is the karst water-rich area, with the total recoverable resources of 667.51×10~4 m~3/a. This area can be regarded as potential water source area for further groundwater exploitation. Excess exploitation of karst water can cause problems such as land subsidence, karst ground collapse, so long-term monitoring of karst water exploitation in the future and reasonable usage of groundwater are necessary. The karst water in Huaqi uplift is close to the urban area with large volume and good quality, and it is relatively easy to develop, which means it has considerable economic value.
引文
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