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“引哈济党”工程对敦煌盆地地下水位影响的数值模拟研究

何剑波 李玉山 胡立堂 尹政 胡彦斌

何剑波, 李玉山, 胡立堂, 尹政, 胡彦斌. “引哈济党”工程对敦煌盆地地下水位影响的数值模拟研究[J]. 水文地质工程地质, 2021, 48(6): 34-43. doi: 10.16030/j.cnki.issn.1000-3665.202012018
引用本文: 何剑波, 李玉山, 胡立堂, 尹政, 胡彦斌. “引哈济党”工程对敦煌盆地地下水位影响的数值模拟研究[J]. 水文地质工程地质, 2021, 48(6): 34-43. doi: 10.16030/j.cnki.issn.1000-3665.202012018
HE Jianbo, LI Yushan, HU Litang, YIN Zheng, HU Yanbin. Numerical simulation studies of the influences of water transferring project from the Haerteng River to the Dang River on groundwater levels in the Dunhuang Basin[J]. Hydrogeology & Engineering Geology, 2021, 48(6): 34-43. doi: 10.16030/j.cnki.issn.1000-3665.202012018
Citation: HE Jianbo, LI Yushan, HU Litang, YIN Zheng, HU Yanbin. Numerical simulation studies of the influences of water transferring project from the Haerteng River to the Dang River on groundwater levels in the Dunhuang Basin[J]. Hydrogeology & Engineering Geology, 2021, 48(6): 34-43. doi: 10.16030/j.cnki.issn.1000-3665.202012018

“引哈济党”工程对敦煌盆地地下水位影响的数值模拟研究

doi: 10.16030/j.cnki.issn.1000-3665.202012018
基金项目: 甘肃省地下水工程及地热资源重点实验室开放基金项目(201907);国家自然科学基金面上基金项目(41877173)
详细信息
    作者简介:

    何剑波(1989-),男,工程师,主要从事水文地质、环境地质方面的研究。E-mail:hjb_candy@163.com

    通讯作者:

    胡立堂(1976-),男,教授,主要从事渗流模拟研究和教学工作。E-mail: litanghu@bnu.edu.cn

  • 中图分类号: P641.2

Numerical simulation studies of the influences of water transferring project from the Haerteng River to the Dang River on groundwater levels in the Dunhuang Basin

  • 摘要: 国务院批准的《敦煌水资源合理利用与生态保护综合规划(2011—2020)》旨在缓解敦煌盆地水资源的合理利用与生态保护之间的矛盾。随着规划的实施,近年来盆地内水面的面积增大,作为规划骨干工程之一的“引哈济党”工程的实施必要性得到质疑。地下水是盆地重要的水源,也是影响西湖自然保护区等生态的关键因素。为定量分析引哈济党工程不同调水量下盆地地下水位时空演化态势,本研究建立了地下水三维流数值模型,结合长期观测井和统测井水位等数据对模型进行了识别和验证。模型应用发现:2010—2018年区域年均地下水储量亏空约0.40×108 m3,主要分布于党河洪积扇区和党河灌区北部,但党河灌区和西湖自然保护区核心区的地下水储量亏空分别约2.62×106,9.99×106 m3。采用模型预测了调水量为0.80×108,0.90×108 ,1.00×108,1.20×108 m3/a时,50年后地下水位动态,发现党河洪积扇地下水位回升5.0~20.0 m,月牙泉区地下水位回升7.0~15.0 m,而西湖自然保护区在模拟期内地下水位回升0.5 m以内。地下水侧向径流补给是西湖自然保护区核心区的重要和持续的补给水源,“引哈济党”工程将确保西湖地下水位的缓慢回升。研究结果可为“引哈济党”工程的实施论证提供重要参考。
  • 图  1  研究区平面(a)和剖面图(b)

    Figure  1.  (a) Map of the study area and (b) a profile

    图  2  玉门试验站潜水蒸发系数与地下水位埋深的关系

    Figure  2.  Relationship between the evaporation coefficient and depth to groundwater level in Yumen

    图  3  4个典型观测孔观测和模拟水位对比曲线

    Figure  3.  Comparison of the observed and simulated water levels for the four typical wells

    图  4  模型识别和验证期22眼长观孔的纳什效率系数和数据变异系数比较

    Figure  4.  Compassion of the Nash–Sutcliffe Efficiency Index and coefficient of data variation for 22 wells

    图  5  2018年12月模拟和观测的潜水位等值线图

    Figure  5.  Contour map of the observed and simulated water table at the end of 2018

    图  6  2010—2018年平均地下水储量变化空间分布

    Figure  6.  Contour map of the yearly average groundwater storage changes in the period from 2010 to 2018

    图  7  敦煌盆地主要地下水均衡项2010—2018年变化趋势

    Figure  7.  Changes in the main groundwater components in the Dunhuang Basin from 2010 to 2018

    图  8  4种调水情景预测的50年后敦煌盆地上升地下水位等值线(a,b,c和d分别为S1、S2、S3和S4情景)

    Figure  8.  Contour map of the predicted increased groundwater levels after 50 years under four water transferring scenarios. a, b, c and d represent scenarios S1, S2, S3 and S4, respectively.

    图  9  4种调水情景预测的4个典型观测孔地下水位变化曲线

    Figure  9.  Changes in the predicted water levels for four typical wells under four water transferring scenarios

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出版历程
  • 收稿日期:  2020-12-10
  • 修回日期:  2021-03-20
  • 网络出版日期:  2021-10-25
  • 刊出日期:  2021-11-15

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