本文關鍵詞： 凍融期 氣溫 線性模型 改進型水量均衡模型 優(yōu)化求解　出處：《灌溉排水學報》2017年06期 　論文類型：期刊論文

【摘要】：為預測河套灌區(qū)凍融區(qū)全年地下水位變化過程,采用統(tǒng)計學方法,研究了凍融期地下水位與地表氣溫間的關系,建立了二者間的線性模型,結合非凍融期水量均衡模型,建立了改進型水量均衡模型,通過優(yōu)化求解方法確定模型參數(shù)。結果表明,模型計算埋深與實測埋深擬合效果較好,提出的改進型水量均衡模型可較好地預測凍融區(qū)全年地下水位變化過程,解決了凍融期間地下水模擬難題,方法簡單精確,具有很好的實用性。
[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.
【作者單位】： 武漢大學水資源與水電工程科學國家重點實驗室;內(nèi)蒙古水利科學研究院;
【基金】：內(nèi)蒙古自治區(qū)水利科技重點項目([2014]117-2)
【分類號】：S152.7

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