| 灌区土壤盐渍化发展模拟预测与对策研究 |
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| 引用本文： | 王少丽,高占义,郭庭天.灌区土壤盐渍化发展模拟预测与对策研究[J].灌溉排水学报,2006,25(1):71-76. |
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| 作者姓名： | 王少丽 高占义 郭庭天 |
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| 作者单位： | 1. 国家节水灌溉北京工程技术研究中心,北京,100044
2. 甘肃引大入秦灌溉管理局,甘肃,兰州,730300 |
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| 摘 要： | 以秦王川灌区观测和调查资料为依据,采用目前广为实用的MODFLOW地下水模拟软件,对灌区地下水动态进行了预测和分析,并对地下水质的发展趋势作出评价。灌溉实施以来,秦王川灌区地下水位逐年上升。未来10年内盐沼区面积扩大约为28 km2,并且将继续增加,地下水埋深0~2 m的面积达31.4 km2,占灌区面积的比例约为6%。未来20年地下水埋深0~2 m的面积达47 km2,占灌区面积的比例为10%左右。根据地下水位的变化特征,对控制土壤盐渍化发展的因素和对策进行了分析,提出以明沟排水为主,加大灌区下游地下水排泄能力;以渠灌为主,适度发展井灌,大力推行田间节水灌溉技术等对策。
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| 关 键 词： | MODFLOW模型 土壤盐渍化 盐沼区 地下水 节水灌溉 明沟排水 |
| 文章编号： | 1000-646X(2006)01-0071-06 |
| 收稿时间： | 2005-10-13 |
| 修稿时间： | 2005年10月13 |
Application of MODFLOW Model in the Study of Soil Salinization Development and Controlling Measures |
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| WANG Shao-li,GAO Zhan-yi,GUO Ting-tian.Application of MODFLOW Model in the Study of Soil Salinization Development and Controlling Measures[J].Journal of Irrigation and Drainage,2006,25(1):71-76. |
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| Authors: | WANG Shao-li GAO Zhan-yi GUO Ting-tian |
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| Institution: | 1. National Center of Efficient Irrigation Engineering and Technology Research, Beijing 100044, China; 2. Yindaruqin Irrigation Management Bureau, Gansu Province, Lanzhou 730300, China |
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| Abstract: | Based on observation and investigation data in Qinwangchuan irrigation district,a MODFLOW groundwater model was used to predict the groundwater regime,and estimate the trend of the groundwater quality.The groundwater level increased year by year since the irrigation was implemented.The salt marshland will expand about 28 km2 in the next ten years and continue to expand.The area that the groundwater depth is between zero and 2 m reaches 31.4 km2 and 47 km2 respectively within the next ten years and twenty years,taking up 6 percent and 10 percent of total area of irrigation district respectively.The factors and countermeasures controlling the development of soil salinization were analyzed.Main countermeasures were proposed,including the increase of drainage capability in the downstream of irrigation district regarding open ditch drainage as core,the appropriate development of well irrigation regarding canal irrigation as core,and the promotion of farmland water saving technology. |
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| Keywords: | MODFLOW model soil salinization salt marshland groundwater water saving irrigation open ditch drainage |
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