【摘要】 采用直接剪切试验与三轴试验分析了尾矿砂的剪切强度特点,尾矿砂抗剪强度较低,具有一定粉细砂的剪切特征;通过直接剪切摩擦试验与拉拔摩擦试验研究尾矿砂的筋-土界面摩擦特性,结果表明双向土工格栅的加筋效果优于单向土工格栅;通过三轴试验分析了加筋尾矿砂的剪切行为特征,以及加筋层数对尾矿砂试样的影响。更多还原

【Abstract】 The shear properties of sand tailings are analyzed by the direct shear test and triaxial test,it is indicated that the shear strength of sand tailings is poor. The friction characteristics of soil and reinforcement are studied by the direct shear friction test and drawing friction test,the results prove that the grid-reinforcement is better than the strip-reinforcement to reinforce the sand tailings. The shear properties of reinforced sand tailings and influence of reinforcement layers are analyzed by the triaxial test.更多还原