山东省汶泗河冲洪积扇地下水开采潜力分析

Analysis on Exploitation Potentialities of Groundwater in Alluvial Fan of Wensi River in Shandong Province

汶泗河冲洪积扇位于济宁市中北部及泰安市宁阳县、东平县一带,是由多个小冲洪积扇组合而成的山前倾斜平原,该区地下水资源丰富。浅层孔隙地下水现状开采量为7.15亿m3/a,中深层孔隙水开采量为2.62亿m3/a,岩溶水开采量为1.36亿m3/a。地下水大量开采形成了地下水降落漏斗,引发了地面沉降等不良环境地质问题。利用开采指数法按行政区划对地下水资源进行潜力评价,结果显示汶上县和兖州市为开采潜力中等区,其中汶上县剩余可采资源量为1.22亿m3/a,兖州市剩余可采资源量为0.67亿m3/a。

Alluvial fan of Wensi River,located in the middle north of the city of Jining and the surroundings of the counties of Ningyang and Dongping affiliated the city of Tai'an,abounds in ground water resources.The yield of groundwater in phreatic pore is 715 million m3/a;the yield of mid-water is 262 million m3/a;and the yield of karst water is 136 million m3/a.Due to overexploiting groundwater,unhealthy environmental and geological problems were caused,such as the funnel of fall,setting of ground.The paper shows the results that obtained through evaluating the potentialities of groundwater resources according to administrative area,and by using extraction index:the residual recoverable resources of Wenshang County is 122 million m3/a,while that of Yanzhou is 67 million m3/a.