| 边坡高填方路基下伏多层采空区稳定性数值模拟评价[ |
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| 引用本文： | 朱友群〓施〓斌〓王宝军〓朴春德〓邱〓钰〓高〓磊.边坡高填方路基下伏多层采空区稳定性数值模拟评价[[J].力学学报,2009,17(3):394-400. |
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| 作者姓名： | 朱友群〓施〓斌〓王宝军〓朴春德〓邱〓钰〓高〓磊 |
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| 作者单位： | 南京大学地球科学系 地球环境计算工程研究所 南京 210093
广东省路桥建设发展有限公司 广州 ,510635 |
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| 摘 要： | 运用快速拉格朗算法分析了多层采空区路基在未处理、注浆处理和注浆处理路基加筋拼接3种工况下路基采空区受力变形和稳定特征。分析结果表明高填方路基在自重荷载和车辆荷载下打破原有采空区平衡状态，注浆加固处理后采空区应力重分布出现新的平衡，但在填方交界区域出现一定的剪应变增量集中，采取加筋处理后剪应力增量下移，路基整体性和变形协调性显著提高。
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| 关 键 词： | 采空区 高填方 FLAC3D 数值模拟 稳定性 |
NUMERICAL SIMULATION FOR STABILITY EVALUATION OF HIGH BACKFILL EMBANKMENT ON SLOPE WITH GOAFS |
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| ZHU Youqun〓SHI Bin〓WANG Baojun〓PIAO Chunde〓QIU Yu〓GAO Lei.NUMERICAL SIMULATION FOR STABILITY EVALUATION OF HIGH BACKFILL EMBANKMENT ON SLOPE WITH GOAFS[J].chinese journal of theoretical and applied mechanics,2009,17(3):394-400. |
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| Authors: | ZHU Youqun〓SHI Bin〓WANG Baojun〓PIAO Chunde〓QIU Yu〓GAO Lei |
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| Institution: | ACEI, Department of Earth Science, Nanjing University, Nanjing 210093
Guangdong Road &|Bridge Construction Development Co.Ltd|Guangzhou 510635 |
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| Abstract: |
In this paper, the Fast Lagrangian Analysis of Continua in 3 Dimensions (FLAC3D) is used to analyze the mechanism and stability of the filled embankment on slope with goafs. Three cases are considered. They are (1) goafs with un-treatment (2) goafs with grouting (3) the embankment with grouting plus reinforcing to the slope. The numerical results show that the self-loading of high backfill embankment and traffic live loading can destroy the mechanical equilibrium of the original goafs. The jointing area between the filled and slope surfaces appears shear strain increment concentration, whereas the stress of goafs reaches to a new equilibrium after grouting. The shear strain increment moves down after reinforcing. As a result, the embankment stability increase obviously. |
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| Keywords: | Goafs Fill embankment FLAC3D Numerical simulation Slope stability |
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