| 土石混合体渗透性能的试坑双环注水试验研究 |
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| 引用本文： | 陈子华,陈蜀俊,陈健,盛谦,闵弘,胡伟. 土石混合体渗透性能的试坑双环注水试验研究[J]. 长江科学院院报, 2012, 29(4): 52-56 |
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| 作者姓名： | 陈子华 陈蜀俊 陈健 盛谦 闵弘 胡伟 |
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| 作者单位： | 1.中国地震局 地震研究所,武汉 430071；2.中国科学院 a.武汉岩土力学研究所;b.岩土力学与工程国家重点试验室，武汉 430077 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(Y028021C01);中国科学院院地合作项目(ZNWH-2011-011) |
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| 摘 要： | 针对西南地区某大型水电站近坝段内一土石混合体构成的滑坡，利用改进的双环注水试验设备进行了现场渗透试验。试验中在滑体和滑带的不同部位分别布置了4个试验点和6个试验点。试验结果表明：土石混合体的渗透系数较大，接近无黏性粗粒土的渗透系数，并且滑体处平均渗透系数是滑带处的3～4倍。结合室内颗粒分析试验对滑体和滑带土进行的分析表明，低于5 mm粒径的细颗粒含量、密度、颗粒形状及物质来源等因素导致两者渗透系数差异的主要原因。
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| 关 键 词： | 土石混合体 现场双环渗透试验 渗透系数 室内颗粒分析 |
| 收稿时间： | 2011-11-09 |
In-situ Double-Ring Infiltration Test of Soil-Rock Mixture |
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| CHEN Zi-hua , CHEN Shu-jun , CHEN Jian , SHENG Qian , MIN Hong , HU Wei. In-situ Double-Ring Infiltration Test of Soil-Rock Mixture[J]. Journal of Yangtze River Scientific Research Institute, 2012, 29(4): 52-56 |
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| Authors: | CHEN Zi-hua CHEN Shu-jun CHEN Jian SHENG Qian MIN Hong HU Wei |
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| Affiliation: | 1.Institute of Seismology, China Earthquake Administration, Wuhan 430071, China; 2.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430077,China; 3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430077, China) |
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| Abstract: | For a landslide made up of soil-rock mixture near the dam of a large hydropower station in southwest China,in-situ infiltration tests were carried out by using improved double-ring infiltrometer.Four points at different places in the sliding body and six points in the sliding zone were tested respectively.The research indicated that the infiltration rate of soil-rock mixture was quite large and was close to that of non-cohesive coarse-grained soil.Meanwhile,the average infiltration rate in sliding body was 3-4 times larger than that in the slide zone.Indoor granulometric test on the soil of sliding body and sliding zone indicated that the content,density,particle shape and source of soil with diameter less than 5 mm are the main causes of infiltration rate difference. |
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| Keywords: | soil-rock mixture in-situ double-ring infiltration test infiltration rate indoor granulometric test |
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