【摘要】 基于室内三轴剪切试验,以聚丙烯土工织物为筋材,对不同加筋层数下尾矿砂的变形、破坏特征进行了研究。结果表明,随着试样加筋层数的增加,尾矿砂的的抗剪强度指标明显提高。加筋可显著地提高尾矿砂的内聚力数值,但对内摩擦角的影响较小。加筋以后尾矿砂的变形规律可用邓肯-张非线性弹性模型进行描述。最后;文中给出了加筋尾矿砂的变形计算参数。更多还原

【Abstract】 Tiaxial compression tests are made for the study of the deformation feature and failure characteristic with different number of geotextile made from Polypropylene, the experimental results show that the shearstrength will be clearly improved with more layers of reinforced materals such as geotextile. The exsitence of reinforced material can mainly influence the inner cohension strength ,and not the inner friction angle. In the end ,this paper shows that the law of stress and strain of tailing sand can be pictured by hyperbola mode,and some computational parmeters have been given to estimate the deformation of reinforced tailing sand.更多还原