内蒙孪井灌区地下水数值模拟及土壤盐渍化分析  

Numerical Modeling of Groundwater Flow and Analysis of Soil Salinization in the Luanjing Irrigation Area, Inner Mongolia

作　　者：刘贯群[1] 王淑英[1] 郑西来[1] 王秉忱[2] 邱汉学[1] 朱新军[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266003 [2]建设部综合勘察研究设计院,北京100007

出　　处：《中国海洋大学学报（自然科学版）》2004年第6期1013-1017,共5页Periodical of Ocean University of China

基　　金：内蒙古自治区科技攻关项目 ;国家自然基金重点项目 (40 0 360 1 0 )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 ,概化出该区水文地质概念模型。在典型地段对不同作物进行了大量的野外灌溉入渗试验 ,确定了灌溉渗漏量 ;通过抽水试验 ,确定了该区的水文地质参数 ;利用长观资料 ,建立了该区地下水的数值模拟模型并利用该模型预报了现状、规划和下游排水 3种条件下地下水的变化趋势。研究表明 :该区随灌溉面积的扩大 ,地下水位上升迅速 ,灌区下游水位将超过临界埋深 ,从而引起土壤次生盐渍化。This paper systematically analyzed the hydrogeological conditions and characteristics of unsaturated zone in Luanjing irrigation area, Inner Mongolia and generalized the hydrogeological model of this area. A number of tests on irrigating infiltrations were done for different crops at some typical spots to calculate the leakage of irrigation. Through pumping tests, the hydrogeological parameters were confirmed. The numerical simulation model, which was established on the long-time observation data, is applied to predict the trend of groundwater changes in this area at present, planning conditions and drainage in the downstream area. The studies show the groundwater level is rising quickly and may surpass the critical depth along downstream area with the extension of the irrigating field, which can bring on the soil salinization.

关 键 词：地下水 土壤盐渍化 数值模拟 灌区 

分 类 号：P641.2[天文地球—地质矿产勘探] S156.4[天文地球—地质学]