本文選題：土體 + 蒸發(fā)模型　； 參考：《高校地質(zhì)學(xué)報》2017年04期

【摘要】：土體水分蒸發(fā)是土體-大氣物質(zhì)和能量交換的主要過程之一,對土體的工程性質(zhì)有重要影響。尤其是近些年來,受全球氣候變化影響,極端干旱性氣候頻繁發(fā)生,與蒸發(fā)相關(guān)的巖土和地質(zhì)工程問題越來越突出,逐漸成為國際研究的熱點。建立土體水分蒸發(fā)模型是該課題研究的首要目標,對準確評估和預(yù)測氣候作用下土體水分場信息有重要理論和現(xiàn)實意義。著重對國內(nèi)外學(xué)者近幾十年來圍繞土體水分蒸發(fā)模型所取得的研究成果進行了歸納和總結(jié),依據(jù)各種模型的理論基礎(chǔ)進行了分類,總體上可分為表面能量平衡模型、水量平衡模型、質(zhì)量傳輸模型、阻力模型、溫度-風(fēng)速模型及吸力模型等六大類別。在此基礎(chǔ)上,分別闡述了各類模型的研究進展,并對其中一些代表性模型進行了詳細介紹,對比分析了各個模型之間的聯(lián)系與區(qū)別,并探討了它們的優(yōu)缺點和適應(yīng)條件�？傮w而言,現(xiàn)有的模型存在重氣象因素而輕土性因素的特點,對砂土和飽和土具有較好的適應(yīng)性,而對黏性土和非飽和土的適應(yīng)性較差�；诖�,結(jié)合本學(xué)科的特色和研究背景,提出了今后該課題的研究重點,包括非飽和土的蒸發(fā)模型問題研究、黏性土水分蒸發(fā)模型研究、考慮土體裂隙參數(shù)的土體水分蒸發(fā)模型研究、構(gòu)建通用型的土體水分蒸發(fā)模型等幾個方面。
[Abstract]:Soil moisture evaporation is one of the main processes of soil-atmosphere material and energy exchange, which has an important effect on the engineering properties of soil. Especially in recent years, due to the influence of global climate change, extreme arid climate occurs frequently, and the geotechnical and geotechnical problems related to evaporation become more and more prominent, and gradually become the focus of international research. The establishment of soil moisture evaporation model is the primary objective of this research, which has important theoretical and practical significance for accurately evaluating and predicting the soil moisture field information under the action of climate. The research results of soil water evaporation model obtained by domestic and foreign scholars in recent decades are summarized and classified according to the theoretical basis of various models, which can be divided into surface energy balance model. Water balance model, mass transfer model, resistance model, temperature-wind model and suction model. On this basis, the research progress of various models is described, and some representative models are introduced in detail. The relationship and difference between each model are compared and analyzed, and their advantages, disadvantages and adaptive conditions are discussed. In general, the existing models have the characteristics of heavy meteorological factors but light soil factors, which have good adaptability to sand and saturated soil, but not to clay and unsaturated soil. Based on this, combined with the characteristics and research background of this subject, this paper puts forward the research focus of this subject in the future, including the evaporation model of unsaturated soil, the water evaporation model of clay soil, and the water evaporation model of clay soil. This paper studies the soil moisture evaporation model considering the soil fissure parameters, and constructs a general soil moisture evaporation model.
【作者單位】： 南京大學(xué)地球科學(xué)與工程學(xué)院;
【基金】：國家自然學(xué)科基金項目(41572246;41772280);國家自然科學(xué)基金重點項目(41230636) 優(yōu)秀青年科學(xué)基金項目(41322019) 江蘇省自然科學(xué)基金項目(BK20171228;BK20170394) 中央高�；究蒲袠I(yè)務(wù)費專項資金聯(lián)合資助
【分類號】：TU43

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本文編號：1914350