地下水系统对水资源开发利用方案的时空响应  

Tempo-Spatially Responses of the Groundwater System to Water Resources Exploration and Utilization Schemes

作　　者：王恩[1] 束龙仓[1] 刘波[1] 

机构地区：[1]河海大学水文水资源与水利工程国家重点实验室,南京210098

出　　处：《吉林大学学报（地球科学版）》2010年第3期617-622,630,共7页Journal of Jilin University：Earth Science Edition

基　　金：水利部科技创新项目(SCX2003-05)

摘　　要：为科学研究北方典型地下水超采城市水资源开发利用模式对地下水系统的时空影响,设计了集中开采方案、逐步减采方案和广义地表水(地表水和中水等)-地下水联合调度方案3种不同的地下水开采、限采方案;结合济宁市,利用数值模型,对不同设计方案下地下水水位的时空变化规律及区域水均衡变化规律进行了研究。与基准方案对比结果显示:集中开采方案使地下水位在局部出现了缓慢回升,而水源地附近水位下降明显,最大中心降幅达到9m,地表水补给的增加势必提高了污染的风险;逐步减产方案使局部地下水位恢复程度较前一方案偏小,而城北水源地漏斗中心水位下降超过12m,城南水源地亦下降达8m,诱发的地表水体和侧向补给量变化的减少使研究区含水层存量反而减少;联合调度方案使区域地下水位普遍回升,最大地下水位恢复幅度超过4m;而水源地地下水降落漏斗最大的仅增加4m,区域地下水系统得到了一定程度的涵养。To study the tempo-spatial response of groundwater system to different water resources exploration and utilization patterns in northern cities where groundwater is overdrafted,groundwater numerical models under three schemes of concentrated exploitation,exploitation reduction step-by-step and joint operation of generalized surface water and groundwater were constructed.The variations of regional groundwater level and water balance were studied using numerical models.Comparing the simulated results of regional groundwater level and water balance with base-line one,it shows that the regional groundwater level rises slowly and the groundwater level in the centre of the well field drops greatly which can be up to 9 m under the concentrated exploitation scheme.It is even worse under the exploitation reduction step-by-step scheme as a result of the reduction of aquifer storage from surface water and lateral recharge.Groundwater level at the centre of the well field in the north of Jining City drops more than 12 m,and up to 8 m in the south.It is only under the joint operation of surface water and groundwater regional groundwater level rises apparently with some parts ascending 4 m,whilst groundwater level of the depression cone only drops 4 m,which can make the regional groundwater level recovers.

关 键 词：地下水资源 地下水系统 数值模型 时空影响 广义地表水 地下水 

分 类 号：P641.8[天文地球—地质矿产勘探]