| 考虑岩土蠕变特性的边坡长期稳定性研究 |
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| 引用本文： | 蒋海飞,胡斌,刘强,王新刚.考虑岩土蠕变特性的边坡长期稳定性研究[J].金属矿山,2013,42(12):131-134. |
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| 作者姓名： | 蒋海飞 胡斌 刘强 王新刚 |
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| 作者单位： | 中国地质大学工程学院 |
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| 基金项目： | * 国家重点基础研究发展计划(973计划)项目(编号：2011CB710604)，国家自然科学基金项目(编号：41172281)。 |
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| 摘 要： | 基于FLAC3D的Cvisc模型，采用考虑岩土蠕变特性的强度折减法对十堰某建筑场地边坡进行稳定性计算，得到了监测点在不同折减系数下的蠕变曲线。对蠕变曲线的位移变化规律进行分析，确定了边坡工程的长期稳定性系数。与传统强度折减法进行比较，结果表明：考虑岩土体蠕变特性时的边坡稳定性系数为1.18，不考虑岩土体蠕变特性的边坡稳定性系数为1.30，说明岩土体蠕变特性不利于边坡的长期稳定，建议采用稳定性系数1.18作为边坡支护的设计参数。
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| 关 键 词： | Cvisc模型 蠕变 强度折减法 长期稳定性系数 |
Study on Slope Long-term Stability Considering Rheological Property of Rock and Soil Medium |
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| Jiang Haifei,Hu Bin,Liu Qiang,Wang Xingang.Study on Slope Long-term Stability Considering Rheological Property of Rock and Soil Medium[J].Metal Mine,2013,42(12):131-134. |
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| Authors: | Jiang Haifei Hu Bin Liu Qiang Wang Xingang |
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| Affiliation: | Faculty of Engineering，China University of Geosciences |
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| Abstract: | Based on Cvisc model in FLAC3D，the stability coefficient of the slope in Shiyan city is sought by using strength reduction technique which considers rheological property of rock and soil medium.The creep curves of monitoring points with different reduction coefficient are obtained.Then，the displacement law of creep curves is analyzed deeply，and the long-term stability coefficient of this slope is determined.Compared with the traditional strength reduction technique，the result indicates that slope stability coefficient is 1.18 with considering rheological property，and it is 1.30 without considering.It shows that the rheological property of soil and rock makes slope more dangerous.It′s better to use stability coefficient 1.18 as design parameter of the slope support. |
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