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浙江大学学报(工学版)  2019, Vol. 53 Issue (1): 19-30    DOI: 10.3785/j.issn.1008-973X.2019.01.003
土木工程     
不同隧道施工方法引起地层损失率的统计分析
吴昌胜, 朱志铎
东南大学 交通学院, 江苏省城市地下工程与环境安全重点实验室, 江苏 南京 210096
Statistical analysis of ground loss ratio caused by different tunnel construction methods in China
WU Chang-sheng, ZHU Zhi-duo
Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China
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摘要:

收集国内23个地区隧道施工引起的地面最大沉降实测数据,选取符合Peck公式的数值,利用反分析的方法获得地层损失率的取值,研究隧道施工引起地层损失率的分布规律以及影响因素,结果如下. 1)土压平衡(EPB)盾构、泥水平衡盾构、浅埋暗挖法施工引起的地层损失率平均值分别为0.96%、0.48%、1.20%,分布在0%~2.0%、0%~1.0%、0%~2.5%之间的概率分别为93.46%、84.83%、92.8%,泥水平衡盾构施工引起的地层损失率分布最集中;2)土压平衡盾构和浅埋暗挖引起的地层损失率基本上随着地层条件的变好而减小,泥水平衡盾构引起的地层损失率随着地层渗透系数的变小而减小;3)隧道埋径比与地层损失率的相关性较弱;4)土压平衡盾构不同注浆率下的平均地层损失率随着注浆率的增大,呈现先减小后增大的趋势.

Abstract:

Field data of ground settlement from 23 areas of China were collected. The data that fitted Peck formulas well were used to obtain ground loss ratio by back analysis. Then the distribution and influence factors of ground loss ratio were discussed. 1) The mean value of the ground loss ratio induced by earth pressure balance (EPB) shield, slurry balance shield and shallow tunnel construction was 0.96%, 0.48%, 1.20%, respectively. About 93.46% of the ground loss ratio induced by EPB was 0%-2.0%, 84.83% of the ground loss ratio induced by slurry balance shield was 0%-1.0% and 92.8% of the ground loss ratio induced by shallow tunnel construction was 0%-2.5%. The distribution of the ground loss ratio caused by slurry balance shield was more concentrated compared with the other two methods. 2) The ground loss ratio caused by EPB shield and shallow tunnel construction decreased as the soil conditions got better, while the ground loss ratio caused by slurry balance shield decreased with the decrease of permeability coefficient. 3) The ground loss ratio had no obvious connection with the ratio of tunnel depth to diameter. 4) The mean value of ground loss ratio induced by EPB under different grouting ratio decreased at first and then increased with the increase of grouting ratio.

收稿日期: 2018-01-05 出版日期: 2019-01-07
CLC:  TU453  
基金资助:

国家“973”重点基础研究发展规划资助项目(2015CB057803)

通讯作者: 朱志铎,男,教授.orcid.org/0000-0002-7140-4200.     E-mail: zhuzhiduo@seu.edu.cn
作者简介: 吴昌胜(1985-),男,博士生,从事隧道与地下工程的研究.orcid.org/0000-0001-9225-569X.E-mail:shengchangwu@126.com
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引用本文:

吴昌胜, 朱志铎. 不同隧道施工方法引起地层损失率的统计分析[J]. 浙江大学学报(工学版), 2019, 53(1): 19-30.

WU Chang-sheng, ZHU Zhi-duo. Statistical analysis of ground loss ratio caused by different tunnel construction methods in China. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2019, 53(1): 19-30.

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http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2019.01.003        http://www.zjujournals.com/eng/CN/Y2019/V53/I1/19

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