中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (11): 116-120.doi: 10.16265/j.cnki.issn1003-3033.2017.11.020

• 安全工程技术科学 • 上一篇    下一篇

盾构隧道动态施工诱发地面沉降试验研究

朱逢斌1 高级工程师, 缪林昌2 教授, 林水仙3 工程师   

  1. 1 相城区建设工程质量监督站,江苏 苏州 215131
    2 东南大学 岩土工程研究所,江苏 南京 210096
    3 高铁新城经济发展有限公司,江苏 苏州 215131
  • 收稿日期:2017-08-10 修回日期:2017-10-15
  • 作者简介:朱逢斌 (1981—),男,江苏太仓人,博士,高级工程师,主要从事地下工程研究与建设工程质量安全管理工作。E-mail:zfb_njfu@hotmail.com。

Experimental study on ground settlement caused by dynamic shield tunneling

ZHU Fengbin1, MIAO Linchang2, LIN Shuixian3   

  1. 1 Construction Engineering Quality Supervision Station of XiangCHENG District, Suzhou Jiangsu 215131, China
    2 Institute of Geotechnical Engineering, Southeast University, Nanjing Jiangsu 210096, China
    3 High-speed Rail New Town Economic Development Co. , Ltd. , Suzhou Jiangsu 215131, China
  • Received:2017-08-10 Revised:2017-10-15

摘要: 为准确预测盾构隧道动态开挖引起的地层变位,采用自行研制的室内模型试验装置对不同地层损失率条件下砂土中盾构隧道动态开挖进行室内模型试验。研究结果表明:不同地层损失率条件下,盾构开挖面超越监测断面将引起天然砂土地面沉降陡增,其增幅随地层损失率增大而增大;当开挖面超出监测断面约2倍隧道直径时,砂土地面沉降随盾构推进趋于稳定,且稳定砂土地面沉降槽宽度随地层损失率增大而减小。

关键词: 盾构隧道, 室内模型试验, 砂土, 地层损失率, 沉降分布曲线, 沉降槽宽度

Abstract: For the sake of predicting the ground settlement due to dynamic shield tunneling exactly, an independently developed test device was used to simulate the dynamic construction of shield tunnel under different ground loss rates. The results show that with different ground loss rate, shield excavation face passing the monitoring cross section will cause sand ground settlement increase rapidly,no matter what the ground loss rate may be, and its growth will increase with the increasing of ground loss rate, and that when shield excavation face passes the monitoring cross section by about two times of tunnel diameter, sand ground settlement will be stabilized with advancing of shield tunneling, and the stable sand ground settlement groove width decreases with the increasing of ground loss rate.

Key words: shield tunnel, laboratory model test, sand ground, ground loss rate, settlement curve, settlement groove width

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