孙超, 范文. 2016: 泾河南岸黄土抗拉强度试验研究. 工程地质学报, 24(s1): 1303-1306. DOI: 10.13544/j.cnki.jeg.2016.s1.191
    引用本文: 孙超, 范文. 2016: 泾河南岸黄土抗拉强度试验研究. 工程地质学报, 24(s1): 1303-1306. DOI: 10.13544/j.cnki.jeg.2016.s1.191
    SUN Chao, FAN Wen. 2016: STUDY ON THE TEST OF TENSILE STRENGTH OF LOESS IN THE SOUTH OF JINGHE. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 1303-1306. DOI: 10.13544/j.cnki.jeg.2016.s1.191
    Citation: SUN Chao, FAN Wen. 2016: STUDY ON THE TEST OF TENSILE STRENGTH OF LOESS IN THE SOUTH OF JINGHE. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 1303-1306. DOI: 10.13544/j.cnki.jeg.2016.s1.191

    泾河南岸黄土抗拉强度试验研究

    STUDY ON THE TEST OF TENSILE STRENGTH OF LOESS IN THE SOUTH OF JINGHE

    • 摘要: 通过对黄土试样进行单轴拉伸试验,分析了泾河南岸原状黄土的抗拉强度特性。研究表明,含水率对黄土的抗拉强度大小有重大的影响,它与抗拉强度之间满足负幂函数递减关系。黄土单轴抗拉试验中,黄土试样的极限拉应变只有万分之几,其极限抗拉强度在几千帕到几十千帕之间。因此,在雨水以及灌溉作用下,黄土的抗拉强度进一步降低,并促进黄土边坡后缘裂缝的进一步发育,这也是导致黄土滑坡发生的因素之一。

       

      Abstract: Through the uniaxial tensile test of loess samples,the tensile fracture characteristics of undisturbed loess in the south bank of Jinghe river. The study shows that the moisture content is the important factor for the tensile strength of loess, and they have decreasing power function relationship with the tensile strength of loess. Under uniaxial tensile test of the loess, the ultimate tensile strain of loess is several over ten thousand, and the tensile strength is several or tens of KPa. Under the condition of rain and irrigation, the tensile strength of loess future decreases and the fissure of the rear edge of the loess slope further development, it is the one of factors that results in the loess landslide.

       

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