| 淮河大堤老应段土体蠕变特性研究及工程应用 |
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| 引用本文： | 马金荣,姜振泉.淮河大堤老应段土体蠕变特性研究及工程应用[J].工程地质学报(英文版),1997,5(1):53-58. |
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| 作者姓名： | 马金荣 姜振泉 |
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| 作者单位： | 中国矿业大学,徐州221008 |
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| 摘 要： | 本文依据工程需要, 采取淮河大堤老应段的原状和扰动土样, 在室内对堤体及堤基土的剪切蠕变和拉伸蠕变特性进行了试验研究。粘土的蠕变剪切强度远低于瞬时剪切强度, Ｃ值仅是Ｃ值的４０％左右;相同含水条件下粘土的长时抗拉强度大于瞬时抗拉强度, 长时拉伸应变量远大于瞬时拉伸应变量, 约为２倍。
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| 关 键 词： | 土堤 剪切蠕变 拉伸蠕变 长期强度 裂缝 |
| 收稿时间： | 1996-02-10 |
A STUDY ON THE CHARACTERISTICS OF SOIL MASS CREEP IN LAOYING PART OF HUAIHE DAM AND ITS ENGINEERING APPLICATION |
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| Ma Jinrong,Jiang Zhengquan,Li Wenping Yu Shuangzhong.A STUDY ON THE CHARACTERISTICS OF SOIL MASS CREEP IN LAOYING PART OF HUAIHE DAM AND ITS ENGINEERING APPLICATION[J].Journal of Engineering Geology,1997,5(1):53-58. |
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| Authors: | Ma Jinrong Jiang Zhengquan Li Wenping Yu Shuangzhong |
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| Institution: | China University of Mining and Technology, Xuzhou 221008 |
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| Abstract: | To meet the need for engineering project, the disturbed and undisturbed soil samples were taken from the Laoying part of Huaihe Dam and the characteristics of shear creep and tensile creep of soil from the dam body and its foundation were studied in laboratory. The creep shear strength (C ) of clay is far lower (about 40%) than the instantaneous shear strength (C); Under the condition of same moisture, the long term tensile strength of clay is larger than the instantaneous, and the long term strain is much larger (about 2 times) than the instantaneous. The maximum depth of tensile crack in dam influenced by coal miming settlement was calculated by using the long term strength indexes of soil mass and was controlled by tensile strain. The cracking damage of dam body is predicted from the data obtained by a linear strain observation system to safeguard the dam. |
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| Keywords: | Earthfill dam Shear creep Tensile creep Long term strength Crack |
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