公路工程
公路工程
공로공정
JOURNAL OF HIGHWAY ENGINEERING
2014年
1期
250-255
,共6页
尾矿砂%加筋%剪切强度%筋 -土界面摩擦特性
尾礦砂%加觔%剪切彊度%觔 -土界麵摩抆特性
미광사%가근%전절강도%근 -토계면마찰특성
sand tailings%reinforcement%shear strength%friction characteristics of soil and rein-forcement
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。
採用直接剪切試驗與三軸試驗分析瞭尾礦砂的剪切彊度特點，尾礦砂抗剪彊度較低，具有一定粉細砂的剪切特徵；通過直接剪切摩抆試驗與拉拔摩抆試驗研究尾礦砂的觔-土界麵摩抆特性，結果錶明雙嚮土工格柵的加觔效果優于單嚮土工格柵；通過三軸試驗分析瞭加觔尾礦砂的剪切行為特徵，以及加觔層數對尾礦砂試樣的影響。
채용직접전절시험여삼축시험분석료미광사적전절강도특점，미광사항전강도교저，구유일정분세사적전절특정；통과직접전절마찰시험여랍발마찰시험연구미광사적근-토계면마찰특성，결과표명쌍향토공격책적가근효과우우단향토공격책；통과삼축시험분석료가근미광사적전절행위특정，이급가근층수대미광사시양적영향。
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 prop-erties of reinforced sand tailings and influence of reinforcement layers are analyzed by the triaxial test.
