塔里木河干流地表水与地下水耦合模拟  

Coupled simulation of surface water and groundwater in the main stream of Tarim River

作　　者：薛联青[1] 魏卿 魏光辉[2] XUE Lianqing;WEI Qing;WEI Guanghui(College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China;Xinjiang Tarim River Basin Management Bureau, Korla 841000, China)

机构地区：[1]河海大学水文水资源学院,江苏南京210098 [2]新疆塔里木河流域管理局,新疆库尔勒841000

出　　处：《河海大学学报（自然科学版）》2019年第3期195-201,共7页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(51779074,41371052);水利部公益性行业专项(201501059);国家重点研发计划(2017YFC0404304);江苏省水利科技项目(2017027);江苏省高校优秀中青年教师和校长境外研修项目(苏教师[2015]35号)

摘　　要：基于流域水资源管理需求,揭示塔里木河地表水与地下水转化关系,以更好地发挥区域水资源整体性功能,采用HSPF-MODFLOW耦合模型对塔里木河流域进行日径流模拟,并选用纳什系数Ens、确定性系数R2、均方根误差σ对模拟结果进行率定,以明晰大气降水-地表水-地下水转化规律。结果表明:率定期和验证期地表水模拟纳什系数均大于0.7,对长期连续径流模拟效果较好;地下水位模拟随补给量变化与实测值基本一致,随着干流下游间歇性输水的延续,下游整体地下水位明显回升,但生态走廊以下河段抬升幅度较小,2004年下游地下水年平均埋深约6.21 m,而在规划年预计达到4.73 m;耦合模型能较为准确地模拟地表径流和地下水动态变化过程,对水资源联合评价与综合管理具有重要意义。Based on the needs of water resources management in the Tarim River Basin, the relationship between surface water and groundwater conversion was revealed to better exert the overall function of regional water resources. Using the HSPF-MODFLOW model, daily runoff process simulation was carried out in the basin, and the Nash coefficient Ens, the deterministic coefficient R2 and the root mean square error σ were selected to determine the simulation results. Under changing conditions, the atmospheric precipitation-surface water-groundwater conversion law was clarified. The results show that the simulated Nash coefficients of surface water in the calibration period and the verification period were both greater than 0.7, and the simulation results of long-term continuous runoff were good as well. The simulated variation of groundwater level with the recharged quantity was basically consistent with the measured value. With the continuation of intermittent ecological water conveyance downstream of the main stream, the groundwater level in the lower reaches has risen remarkably, but the lower section of the ecological corridor has a small uplift. In 2004, the average groundwater depth of downstream groundwater was about 6.21 m, and it was expected to reach 4.73 m in the planning year. The coupled model can accurately simulate the process of surface runoff and groundwater dynamic change, which is significant for the joint evaluation and comprehensive management of water resources.

关 键 词：HSPF-MODFLOW耦合模型 率定分析 水循环 径流模拟 地表水 地下水 塔里木河 纳什系数 

分 类 号：TV121[水利工程—水文学及水资源]