季节性冻融区地下水位预测方法研究

发布时间：2018-02-09 02:53

本文关键词： 冻融期气温线性模型改进型水量均衡模型优化求解　出处：《灌溉排水学报》2017年06期 　论文类型：期刊论文

【摘要】：为预测河套灌区冻融区全年地下水位变化过程,采用统计学方法,研究了冻融期地下水位与地表气温间的关系,建立了二者间的线性模型,结合非冻融期水量均衡模型,建立了改进型水量均衡模型,通过优化求解方法确定模型参数。结果表明,模型计算埋深与实测埋深拟合效果较好,提出的改进型水量均衡模型可较好地预测冻融区全年地下水位变化过程,解决了冻融期间地下水模拟难题,方法简单精确,具有很好的实用性。
[Abstract]:In order to predict the annual groundwater level variation process in Hetao irrigation area, the relationship between groundwater level and surface air temperature during freezing and thawing period was studied by using statistical method, and a linear model between them was established, combining with the water balance model in non-freezing and thawing period, the relationship between groundwater level and surface air temperature in freeze-thaw period was studied. An improved water balance model is established, and the parameters of the model are determined by the optimization method. The results show that the model can fit the buried depth well with the measured one. The improved water balance model can well predict the annual groundwater level change process in freeze-thaw area and solve the problem of groundwater simulation during freezing and thawing. The method is simple and accurate and has good practicability.
【作者单位】：武汉大学水资源与水电工程科学国家重点实验室;内蒙古水利科学研究院;
【基金】：内蒙古自治区水利科技重点项目([2014]117-2)
【分类号】：S152.7

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