›› 2013, Vol. 27 ›› Issue (4): 80-82.

• 工程实录 • 上一篇    下一篇

软土地区盾构掘进引起地表沉降变形计算与分析

徐学勇1, 2,樊延强1,宋庆晓3,黄强1,俞演明1   

  1. (1.中国水电顾问集团 华东勘测设计研究院,杭州 310014;2.中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室,武汉 430071;3.青岛中德生态园联合发展有限公司,山东青岛 266555)
  • 收稿日期:2012-10-29 出版日期:2013-08-20 发布日期:2013-08-27
  • 作者简介:徐学勇(1980-),男,博士,高级工程师,研究方向为海洋岩土工程。
  • 基金资助:

    国家自然科学基金项目(No.41101519);华东勘测设计研究院科研项目(KY2011-02-17-01)

Analysis of the Ground Deformations Induced by the Shielded Tunneling in Soft Soils

XU Xueyong1,2, FAN Yanqiang1, SONG Qingxiao3, HUANG Qiang1, YU Yanming1   

  1. (1. HydroChina Huadong Engineering Corporation,Hangzhou,310014;2.State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academyof Sciences,Wuhan,430071;3.Qingdao SinoGerman Ecopark Development Co.,Ltd.,Qingdao Shandong,266555)
  • Received:2012-10-29 Online:2013-08-20 Published:2013-08-27

摘要: 在软土地区盾构施工会扰动地层,开展地表沉降变形计算和分析,对保证盾构施工安全有着重要的意义。结合某盾构穿越海塘工程实例,采取理论解析法和数值模拟进行地表沉降变形计算和分析。计算结果表明,两种方法得到的结果基本一致,地表最大沉降分别为8.8 mm和9.2 mm,盾构穿越不会破坏海塘整体稳定性。计算结果可为工程设计和施工提供理论依据,也可为类似工程提供参考。

关键词: 地下工程, 盾构隧道, 地表沉降, Peck公式, 数值模拟

Abstract: Shielded tunneling in the soft soils will induce the disturbance in soil strata, change the original stress conditions as well as break the initial equilibrium state. As a result, the ground surface will settle with various magnitudes. The analysis of the ground surface deformation is important to a safe tunneling construction. This paper presents a case history of a shielded tunneling project underneath a seawall. The ground deformations are monitored and numerically simulated. The maximum observed deformation is 8.8 mm whereas a maximum of 9.2 mm ground settlement is numerically predicted.

Key words: Underground Engineering, Shielded Tunneling, Ground Deformations, Peck formula, Numerical Simulation