【摘要】：在收集查閱國內(nèi)外已有研究資料的基礎(chǔ)上,對地下水中膠體穩(wěn)定性、遷移機制以及模擬預(yù)測方法進(jìn)行了詳細(xì)歸納和總結(jié)。研究表明,膠體穩(wěn)定性主要受自身理化性質(zhì)和水文地球化學(xué)條件的影響,其受控于膠體粒徑、形態(tài)、電勢電位以及地下水的pH、離子強度等條件。膠體在多孔介質(zhì)中的遷移機制主要表現(xiàn)為膠體沉積和形變阻塞,其中針對膠體穩(wěn)定性的差異性,膠體沉積過程分別表現(xiàn)為表面封阻和過濾熟化。目前有關(guān)膠體在地下水中遷移的模擬技術(shù)已發(fā)展得日益成熟,但結(jié)合多孔介質(zhì)非均質(zhì)性和膠體化學(xué)性質(zhì)非均質(zhì)性的數(shù)學(xué)模型還需進(jìn)一步探討。
[Abstract]:On the basis of collecting and consulting the existing research data at home and abroad, the colloid stability, migration mechanism and simulation prediction methods in groundwater are summarized and summarized in detail. The results show that the stability of colloid is mainly affected by its physical and chemical properties and hydrogeochemical conditions. It is controlled by the colloid particle size, morphology, potential and pH, ionic strength of groundwater. The migration mechanisms of colloids in porous media are mainly colloid deposition and deformation blocking. According to the difference of colloid stability colloid deposition process is characterized by surface blocking and filtration ripening respectively. At present, the simulation technology of colloid migration in groundwater has been developed increasingly mature, but the mathematical model combining the heterogeneity of porous media and the heterogeneity of colloid chemical properties needs to be further discussed.
【作者單位】： 吉林大學(xué)地下水資源與環(huán)境教育部重點實驗室;吉林大學(xué)環(huán)境與資源學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(41472215)~~
【分類號】：X143
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本文編號：2228121