| 饱和前后软岩各向异性力学特征的对比试验 |
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| 引用本文： | 闫小波,熊良宵,杨林德,陈仁芳. 饱和前后软岩各向异性力学特征的对比试验[J]. 福州大学学报(自然科学版), 2009, 37(2) |
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| 作者姓名： | 闫小波 熊良宵 杨林德 陈仁芳 |
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| 作者单位： | 闫小波,YAN Xiao-bo(福州大学土木工程学院,福建,福州,350108;同济大学地下建筑与工程系,上海,200092);熊良宵,杨林德,XIONG Liang-xiao,YANG Lin-de(同济大学地下建筑与工程系,上海,200092);陈仁芳,CHEN Ren-fang(江西交通勘察设计院,江西,南昌,330000) |
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| 基金项目： | 国家自然科学基金，福州大学科技发展基金 |
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| 摘 要： | 以泥质粉砂岩和褐红色泥岩为对象,研究单轴压缩条件下软岩干燥和饱和状态时的各向异性力学特征,包括变形各向异性特征和强度各向异性特征.试验结果表明:泥质粉砂岩和褐红色泥岩的弹性模量、单轴抗压强度饱和后均大幅下降,而泊松比增大;饱水后泥质粉砂岩的弹性模量在垂直于层理方向的降低幅度明显小于平行方向,而单轴抗压强度在垂直于层理方向的降低幅度则略大于平行方向,泊松比的变化幅度相差不大;饱水后褐红色泥岩的泊松比在垂直于层理方向的增大幅度明显小于平行方向,而弹性模量和单轴抗压强度变化幅度相差不大.
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| 关 键 词： | 软岩 各向异性 层理 变形参数 强度参数 |
Comparative tests on anisotropic mechanics behavior of soft rock in the condition of saturation and dryness |
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| YAN Xiao-bo,XIONG Liang-xiao,YANG Lin-de,CHEN Ren-fang. Comparative tests on anisotropic mechanics behavior of soft rock in the condition of saturation and dryness[J]. Journal of Fuzhou University(Natural Science Edition), 2009, 37(2) |
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| Authors: | YAN Xiao-bo XIONG Liang-xiao YANG Lin-de CHEN Ren-fang |
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| Affiliation: | 1.College of Civil Engineering;Fuzhou University;Fuzhou;Fujian 350108;China;2.Department of Geotechnical Engineering;Tongji University;Shanghai 200092;3.Traffic Design Institution of Jiangxi Province;Nanchang;Jiangxi 330000;China |
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| Abstract: | Taking clayey siltstone and brown mudstone as the subjects,the anisotropic mechanics behaviour of soft rock in the state of drying and saturation under uniaxial compression has been studied,including deformation anisotropy and strength anisotropy.The experimental results show: after being saturated the elastic modulus and the uniaxial compressive strength of clayey siltstone and brown mudstone decreased significantly but the Poisson ratio increased;the decreasing range of the elastic modulus of clayey silts... |
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| Keywords: | soft rock anisotropy bedding deformation parameter strength parameter |
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