| 加筋尾细砂三轴压缩试验研究 |
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| 引用本文： | 冯美生,王来贵,王凤江.加筋尾细砂三轴压缩试验研究[J].山西大学学报(自然科学版),2011(Z2):144-147. |
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| 作者姓名： | 冯美生 王来贵 王凤江 |
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| 作者单位： | 辽宁工程技术大学力学与工程学院;山西大同大学土木工程系;秦皇岛冶金设计研究总院; |
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| 基金项目： | 国家自然科学基金面上项目(50434020) |
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| 摘 要： | 分别对含筋层数为1、2、4层的尾矿细砂进行三轴压缩试验.2层以下加筋时,土工织物对尾矿砂的横向变形约束作用较小,尾细砂均表现为剪切破坏特征;在2到4层增强时,尾细砂表现为拉应力破坏特征;拉破坏条件下和剪切滑移破坏条件下,均发现加筋后的尾矿,内聚力随加筋层数非线性增大,而内摩擦角基本不变.定义了增强效果系数,层数与该系数呈非线性关系.轴向应变小于5%～8%时,尾矿砂处于弹性变形阶段,轴向应变大于8%时,出现弹塑性耦合变形.
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| 关 键 词： | 尾细砂 三轴试验 抗剪强度 土工织物 |
Triaxial Compression Test on Multilayer Reinforced Tailing Fine Sand |
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| FENG Mei-sheng,WANG Lai-gui,WANG Feng-jiang.Triaxial Compression Test on Multilayer Reinforced Tailing Fine Sand[J].Journal of Shanxi University (Natural Science Edition),2011(Z2):144-147. |
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| Authors: | FENG Mei-sheng WANG Lai-gui WANG Feng-jiang |
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| Institution: | FENG Mei-sheng1,2,WANG Lai-gui1,WANG Feng-jiang3(1.College of mechanics and engineering,Liaoning Technical University,Fuxin 123000,China,2.Department of civil engineering,Shanxi Datong University,Datong 037003,3.Qinghuangdao Research Institute of Metallurgy Design,Qinhuangdao 066001,China) |
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| Abstract: | Tiaxial compression tests are made with different number of geotexile to the tailing fine sand.when 1 or 2 layers,the geotexile has a little restraint on the sand's lateral deformation and the failure mode is shear failure.when 4 or more layers,the failure mode is tensile failure.Under the two failure modes,the existence of reinforced material can influence the cohesion force which is nonlinear increase with the layer's number,but not the inner friction angle.It defined the coefficient of the enhanced actio... |
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| Keywords: | tailings fine sand triaxial compression test shear strength geotextile |
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