| 南水北调中线膨胀岩膨胀特性研究 |
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| 引用本文： | 刘静德,李青云,龚壁卫.南水北调中线膨胀岩膨胀特性研究[J].岩土工程学报,2011,33(5):826. |
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| 作者姓名： | 刘静德 李青云 龚壁卫 |
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| 作者单位： | 1. 长江科学院，湖北 武汉 430010；2. 同济大学土木工程学院地下建筑与工程系，上海 210008 |
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| 基金项目： | 国家“十一五”科技支撑计划重点项目(2006BAB04A10) |
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| 摘 要： | 对南水北调中线强膨胀岩重塑样进行了膨胀率试验，分析吸湿条件下膨胀岩膨胀变形规律。通过控制应变的广义膨胀力试验，研究了广义膨胀力的影响因素，并推导出广义膨胀力经验公式。膨胀率试验表明，邯郸强膨胀岩的膨胀率与干密度线性正相关，与初始含水率线性负相关。广义膨胀力试验表明：广义膨胀力与干密度和含水率线性相关，随干密度增加、初始含水率降低而增加，反之减小；边界约束对于广义膨胀力的影响显著，膨胀应变的略微增加，广义膨胀力大大降低。
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| 关 键 词： | 膨胀率 广义膨胀力 南水北调 膨胀应变 |
Swelling properties of expansive rock in Middle Route Project of South-to-North Water Diversion |
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| LIU Jing-de,LI Qing-yun,GONG Bi-wei.Swelling properties of expansive rock in Middle Route Project of South-to-North Water Diversion[J].Chinese Journal of Geotechnical Engineering,2011,33(5):826. |
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| Authors: | LIU Jing-de LI Qing-yun GONG Bi-wei |
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| Affiliation: | 1. Yangtze River Scientific Research Institute, Wuhan 430010, China; 2. Dept. of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China; 3. Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Wuhan 430010, China; |
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| Abstract: | The swelling deformation properties of expansive rock during moisture absorption are studied by means of the expansion ratio tests.Through the swelling force tests,the influential factors are analyzed,and several empirical formula are deduced.According to the expansion ratio tests,the expansive rock has a positive linear correlation with its dry density,and negative linear correlation with its initial water content.The swelling force tests indicate that the general swelling force increases with the dry dens... |
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| Keywords: | expansion ratio general swelling force South-to-North Water Diversion expansion strain |
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