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隧道建设(中英文) ›› 2011, Vol. 31 ›› Issue (2): 166-170.

• 研究与探索 • 上一篇    下一篇

莲盐NATM高速公路隧道围岩变形时空效应的统计分析

郭时安   

  1. 深圳市路隧建设管理办公室, 广东 深圳 518100
  • 收稿日期:2011-01-20 修回日期:2011-03-15 出版日期:2011-04-20 发布日期:2011-05-11
  • 作者简介:郭时安(1955—),男,湖南长沙人,1995年获得法国国家应用科学研究院路桥专业博士学位,高级工程师,现主要从事公路工程的设计与管理工作。

Statistic Analysis on TimeSpace Effects of Deformation of Surrounding

GUO Shi-An   

  1. Shenzhen Highway and Tunnel Construction Management Office, Shenzhen 518100, Guangdong, China
  • Received:2011-01-20 Revised:2011-03-15 Online:2011-04-20 Published:2011-05-11

摘要:

为对隧道不同级别围岩的稳定性进行评价及对二次衬砌的合理施作时机提供依据,基于深圳莲盐6座3车道NATM高速公路隧道的现场监测数据,采用概率论数理统计方法,绘出Ⅱ~Ⅴ级围岩收敛变形与拱顶下沉变形稳定时间、稳定距离的散点图和直方图,并拟合出其正态分布函数。经统计分析得出:隧道围岩从开挖到变形稳定时间、稳定距离与围岩级别有关,随着围岩级别的增大,其变形稳定距离与稳定时间大体呈相应增大的规律。

关键词: 隧道工程, 围岩级别, 拱顶下沉, 收敛变形, 时空效应

Abstract:

The scatter diagram and histogram of the stabilization time and stabilization distance of the deformation under Grade Ⅱ to Grade Ⅴ surrounding rocks, as well as the crown settlement, are drawn and their fitted normal distribution function is provided, based on the site monitoring data of 6 threelane NATM tunnels on LianhuaYanba Highway in Shenzhen, so as to estimate the stability of different grades of surround rocks and to provide reference for the timing of the secondary lining installation. Conclusions drawn are as follow: The stabilization time and stabilization distance of the deformation of the surrounding rocks of tunnels have some connection with the grades of the surrounding rocks and the stabilization time and stabilization distance grow as the grades of the surrounding rocks grow.

Key words: tunneling, surrounding rock grade, crown settlement, convergence deformation, timespace effect