本文選題：凍融土壤　切入點(diǎn)：Phillip入滲模型　出處：《節(jié)水灌溉》2017年05期 　論文類型：期刊論文

【摘要】：為提高季節(jié)性凍土區(qū)冬、春季儲(chǔ)水灌溉的灌水質(zhì)量和效果,在季節(jié)性凍土區(qū)凍融期間進(jìn)行了大田凍融土壤的系列入滲試驗(yàn),獲取了自然凍融條件下的大量土壤入滲試驗(yàn)數(shù)據(jù),擬合得到了不同凍融條件下的Philip入滲模型參數(shù),建立了入滲模型參數(shù)與土壤基本理化參數(shù)間的BP神經(jīng)網(wǎng)絡(luò)的預(yù)報(bào)模型,實(shí)現(xiàn)了基于土壤體積含水率、黏粒含量、土壤密度、土壤溫度以及灌溉用水水溫等基本理化參數(shù)對(duì)Philip入滲模型參數(shù)穩(wěn)滲率A、吸滲率S的預(yù)報(bào)。所得到的預(yù)測(cè)值與實(shí)測(cè)值之間相對(duì)誤差的平均值控制在7%以內(nèi)。研究表明,利用凍融土壤條件下土壤常規(guī)理化參數(shù)對(duì)Philip入滲模型參數(shù)進(jìn)行預(yù)報(bào)是可行的,可為季節(jié)性凍融土壤灌溉技術(shù)參數(shù)的確定提供有力支撐。
[Abstract]:In order to improve the irrigation quality and effect of winter and spring storage irrigation in seasonal frozen soil region, a series of soil infiltration tests were carried out during the freezing and thawing period in seasonal frozen soil region, and a large number of soil infiltration test data under natural freezing and thawing conditions were obtained. The parameters of Philip infiltration model under different freezing and thawing conditions were obtained, and the prediction model of BP neural network between infiltration model parameters and basic physical and chemical parameters of soil was established. The prediction model was realized based on soil volume moisture content, clay content and soil density. The prediction of Philip infiltration model parameters such as soil temperature and water temperature of irrigation water. The average relative error between the predicted value and the measured value is controlled within 7%. It is feasible to predict the parameters of Philip infiltration model by using the conventional physical and chemical parameters of soil under the condition of freeze-thawing soil, which can provide strong support for the determination of technical parameters of seasonal freeze-thaw soil irrigation.
【作者單位】： 太原理工大學(xué)水利科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目“區(qū)域尺度上土壤入滲參數(shù)多元非線性傳輸函數(shù)研究”(40671081)
【分類號(hào)】：S152.7

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本文編號(hào)：1585374