本文關(guān)鍵詞： 黏粒含量 黏性土 滲透系數(shù) 塑性指數(shù) 顆粒級(jí)配　出處：《科學(xué)技術(shù)與工程》2017年30期 　論文類型：期刊論文

【摘要】：滲透性是土體的重要工程性質(zhì)之一,在諸如垃圾填埋場(chǎng)防污、水利大壩防滲、基坑支護(hù)防漏等工程項(xiàng)目中,運(yùn)用各種方法提高土體的抗?jié)B性是施工的最終目的�；诖�,制備不同黏粒含量的黏性土試樣;并開(kāi)展?jié)B透及相關(guān)試驗(yàn),以分析黏粒含量對(duì)滲透性的影響。試驗(yàn)結(jié)果表明隨著黏粒含量的增加,黏性土的塑性指數(shù)呈線性增加,而滲透系數(shù)呈非線性減小,可用指數(shù)函數(shù)式擬合。另外,顆分曲線顯示高黏粒含量試樣的不均勻系數(shù)變小,其堆積方式以小粒徑顆粒接觸為主,孔隙通道直徑小,易出現(xiàn)不連通孔隙,導(dǎo)致滲透系數(shù)減小,所得成果可供工程實(shí)踐參考。
[Abstract]:Permeability is one of the important engineering properties of soil, in such engineering projects as landfill site antifouling, water conservancy dam seepage prevention, foundation pit support and leakage prevention and so on. The ultimate purpose of construction is to improve the impermeability of soil by various methods. Based on this, the clay samples with different clay content are prepared. Permeability and related experiments were carried out to analyze the effect of clay content on permeability. The results showed that the plasticity index of clay increased linearly and the permeability coefficient decreased linearly with the increase of clay content. It can be fitted by exponential function. In addition, the particle curve shows that the non-uniform coefficient of the sample with high viscosity content becomes smaller, the stacking mode is mainly small particle contact, the diameter of pore channel is small, and the disconnected pore is easy to appear. As a result, the permeability coefficient is reduced, and the obtained results can be used for reference in engineering practice.
【作者單位】： 南京工業(yè)大學(xué)數(shù)理科學(xué)學(xué)院;
【基金】：江蘇省博士后基金(1302012A)資助
【分類號(hào)】：TU442
【正文快照】： 引用格式:付磊,閆迪,黃強(qiáng),等.黏粒含量對(duì)黏性土滲透性影響的試驗(yàn)研究[J].科學(xué)技術(shù)與工程,2017,17(30):280—284Fu Lei,Yan Di,Huang Qiang,et al.Experimental study on effect ofclay content on permeability of clayey soil[J].Science Technology andEngineering,2017,17(

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