内蒙孪井灌区地下水补给及水资源优化配置研究  

Groundwater recharge and optimal allocation of water resources in Luanjing Irrigation Area,Inner Mongolia

作　　者：刘贯群[1] 张玉芳[1] 王言思[1] 宋涛[1] 李义雯 

机构地区：[1]中国海洋大学环境科学与工程学院,青岛266100 [2]内蒙古阿拉善盟气象局,巴彦浩特750306

出　　处：《干旱区资源与环境》2010年第2期62-68,共7页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(40572171)资助

摘　　要：系统分析了内蒙孪井灌区的水文地质条件和包气带水文地质特征,对地下潜水深埋区降雨(灌溉)入渗补给的滞后性进行了分析,估算出了孪井灌区降雨(灌溉)入渗补给的滞后时间;建立水资源优化配置模型,利用GAMS软件优化种植结构,减小整个灌区的灌溉入渗量;最后利用VisualMODFLOW软件预报了现状灌溉和优化灌溉条件下的地下水水位。研究表明:深厚包气带对降雨(灌溉)入渗补给具有明显的滞后分配作用,孪井灌区岩性下的入渗补给滞后时间约为240-360d;实行水资源优化配置后,由于灌溉入渗量减小,水位上升幅度明显减小,减缓了土壤盐渍化的发展进度,但是仍然存在土壤次生盐渍化问题,必须改变现行灌水方式或者采取适宜工程措施加以防治。The hydrogeologic conditions and unsaturated zone hydrogeologic features were analyzed, rainfall （irrigation） recharge hysteresis quality at phreatic water deep zone was analysed, and hysteresis time of rainfall （ irrigation） recharge was estimated. Optimal allocation of water resources model and optimizing planting structure were established with GAMS to reduce the infiltration irrigation volume. The groundwater level both the status quo condition and the optimization condition were forecasted by running Visual MODFLOW at last. By the results analysis, the hysteresis quality of rainfall （irrigation） recharge is very obvious at phreatic water deep zone, hysteresis time is about 240 - 360d in Luanjing Irrigation Area. After the optimal allocation of water resources, the water level rising is significantly reduced and the development of soil salinization progress is slowed, but it is also a problem, so we must change the existing irrigation methods or take appropriate measures to combat it.

关 键 词：孪井灌区 滞后补给 水资源优化配置 数值模拟 

分 类 号：P641[天文地球—地质矿产勘探]