基于数值模拟法的傍河水源地井群设计和优化  

Pumping well groups on riverbanks:design and optimization by numerical simulation

作　　者：杨景文 张军军 杨光 翟远征[1,2] 滕彦国 王金生[1,3] 袁文真[3] 姜亚 YANG Jingwen;ZHANG Junjun;YANG Guang;ZHAI Yuanzheng;TENG Yanguo;WANG Jinsheng;YUAN Wenzhen;JIANG Ya(College of Water Sciences,Engineering Research Center of Groundwater Pollution Control and Remediation of Ministry of Education,Beijing Normal University,100875,Beijing,China;Harbin Water Supply Group Co,Ltd,150080,Harbin,Heilongjiang,China;Chinese Academy of Geological Sciences,100037,Beijing,China)

机构地区：[1]北京师范大学水科学研究院,地下水污染控制与修复教育部工程研究中心,北京100875 [2]哈尔滨供水集团有限责任公司,黑龙江哈尔滨150080 [3]中国地质科学院,北京100037

出　　处：《北京师范大学学报（自然科学版）》2020年第2期216-222,共7页Journal of Beijing Normal University(Natural Science)

基　　金：国家水体污染控制与治理科技重大专项资助项目(2018ZX07101005-04);深部中心高层次人才引进项目(JYYWF20180501);国家自然科学基金资助项目(41877174);111引智计划项目(B18006)。

摘　　要：为保证傍河水源地水资源的可持续开发利用,并尽量减少由此对生态环境造成的负面影响,对水源地的开采井群进行优化设计是必要的.本研究以开采量(20×10^4 m^3·d^-1)和地下水位允许降深(14 m)为目标函数,以袭夺江水比例、地下水位降落漏斗范围、理论单井供水能力为约束条件,以开采井数量、井间距离、井河距离3个设计参数为变量,应用Visual MODFLOW 2010^.0软件对地下水流场的演化规律进行了模拟预测,并基于预测结果对设计方案进行了比选,得到了最优参数组合.结果表明:9口开采井、井间距离为10^0 m、井河距离为50 m为最优方案;在该方案条件下,傍河水源地的供水能力为2.1×10^5 m^3·d^-1,其中袭夺的江水量占66%;形成的地下水位降落漏斗面积为2.8×10^6 m2,中心区降深为11.5 m,对环境产生的扰动最小,环境负效应也最小.To ensure sustainable development and utilization of water resources,and to minimize negative impacts on ecological environment,it is necessary to optimize design of pumping well group of riverside water source.With water yield(20×10^4 m^3·d^-1)and allowable drawdown of groundwater level(14 m)as objective functions,with proportion of river water captured by wells,area of cone of depression of groundwater level,and theoretical water supply capacity of a single well as constraint conditions,with design parameters(well number,distance between two adjacent wells and distance between well and river)as variables,evolution of groundwater flow field under three exploitation schemes was simulated and predicted with Visual MODFLOW 2010^.0.An optimal scheme was obtained by comparison of predicted results.The optimal scheme was found to be:a combination of nine wells,with distance between two adjacent wells at 10^0 m,and distance between well and river at 50 m.Under optimal conditions,supply capacity of the source was 2.1×10^5 m^3·d^-1,66%of which was from the river;area of depression cone at the groundwater level of the source was 2.8×10^6 m2,corresponding drawdown at groundwater level of the central cone was 11.5 m.This has the least disturbance to environment and the least negative effect on t environment under condition of optimal scheme.

关 键 词：傍河水源地 Visual MODFLOW 数值模拟 井群 优化 

分 类 号：P641.8[天文地球—地质矿产勘探]