基坑群开挖对邻近既有地铁隧道影响的自动化监测研究

曹权; 李清明; 项伟; 贾海梁

基坑群开挖对邻近既有地铁隧道影响的自动化监测研究 English Version

(1.中国地质大学(武汉）工程学院，湖北武汉 430074；2. 深圳市市政设计研究院有限公司，广东深圳 518029)

详细信息

作者简介:
曹权(1970– )，男，安徽安庆人，博士，在站博士后，高级工程师，国家注册土木工程师（岩土），主要从事岩土的原位测试研究。

中图分类号: TU47
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出版历程
- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Automatic monitoring of effects of excavation of group foundation pitson existing adjacent metro tunnels

(1. Faculty of Engineering, China University of Geosciences, Wuhan 430074, China; 2. Shenzhen Municipal Design and Research Institute Co., Ltd., Shenzhen 518029, China)

摘要

摘要: 城市中基坑群的开挖必然改变周围土体的应力状态，从而造成临近既有地铁隧道的变形和位移，最终对地铁正常运营产生严重影响。鉴于这种影响的复杂性，采用自动化技术实时监测地铁隧道的变形就显得非常重要。利用三维数值法模拟基坑群开挖对临近既有地铁隧道的影响，定性的分析其变形规律；在此基础上，对自动化监测系统在地铁隧道监测方面的系统构成、监测原则、监测范围、测点布置、监测精度和监测效果等方面进行介绍。三维数值分析和自动化监测的结合为合理制定基坑群开挖对临近既有地铁隧道的保护措施提供了可靠的依据。
- 基坑群开挖 /
- 地铁隧道 /
- 变形 /
- 三维数值分析 /
- 自动化监测
Abstract: The excavation of group foundation pits will change the stress state of the surrounding soil and result in deformation and displacement of the existing adjacent metro tunnels. The excessive settlements may induce the crack of tunnel segments and eventually may affect the safety operation of metro trains. Sine the influence is complicated, automatic monitoring is important for safe operation of metro tunnels. The effects on the existing adjacent metro tunnels during excavation are simulated through three-dimensional numerical analysis, and the displacement of the tunnels is qualitatively analyzed. Based on these analyses, an automatic monitoring system including composition, surveying rules, surveying area, instrumentation location, surveying precision and surveying effect on monitoring deformation of the existing adjacent metro tunnels is introduced. Combing the three-dimensional numerical analysis with the automatic monitoring may provide certain basis for rational use of protective measures for metro tunnels influenced by adjacent excavation.
- excavation of group foundation pits /
- metro tunnel /
- deformation /
- three-dimensional numerical analysis /
- automatic monitoring

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参考文献(12)

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