| 盾构施工纵向地表沉降分析及基于延迟差分方程的动态预报 |
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| 引用本文： | 张书丰,孙树林,姜志强.盾构施工纵向地表沉降分析及基于延迟差分方程的动态预报[J].岩土力学,2008,29(1):182-186. |
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| 作者姓名： | 张书丰 孙树林 姜志强 |
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| 作者单位： | 河海大学 地质及岩土工程系，南京 210098 |
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| 摘 要： | 结合南京地铁某盾构施工区间，对纵向地表沉降进行了理论分析，提出了盾构掘进对纵向地表的影响范围，总结了盾构推进不同阶段引起地表沉降量占总沉降量的百分比。针对引起地表沉降因素的复杂性和不稳定性，将纵向地表沉降视为随机过程，基于延迟差分方程建立模型进行动态预报，并与实测数据进行比较。结果表明，该方法具有较高的准确性。
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| 关 键 词： | 盾构法 南京地铁 纵向地表沉降 延迟差分方程 动态预报 |
| 文章编号： | 1000-7598-（2008）01-0182-05 |
| 收稿时间： | 2006-05-12 |
| 修稿时间： | 2006年5月12日 |
Analysis and dynamic prediction of longitudinal ground settlements due to shield tunneling based on delayed difference equation |
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| ZHANG Shu-feng,SUN Shu-lin,JIANG Zhi-qiang.Analysis and dynamic prediction of longitudinal ground settlements due to shield tunneling based on delayed difference equation[J].Rock and Soil Mechanics,2008,29(1):182-186. |
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| Authors: | ZHANG Shu-feng SUN Shu-lin JIANG Zhi-qiang |
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| Institution: | Department of Geological and Geotechnical Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | In accordance with the interval shield tunnel of Nanjing Metro, the longitudinal ground settlement is theoretically analyzed. The area of longitudinal ground settlement by shield driven in Nanjing Metro is firstly presented; and the percentages of different course are summed up. In view of the complexity and instability of the information of ground settlement, the longitudinal ground settlement is considered as a stochastic process. Based on the delayed difference equation, the model for dynamic prediction is proposed. The predicting results, compared with the monitoring data, indicate that the model has high accuracy. |
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| Keywords: | shield method Nanjing Metro longitudinal ground settlement delayed difference equation dynamic prediction |
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