摘要
天然软土在我国粤港澳大湾区、长江三角洲地区和环渤海湾地区广泛存在,以上地区的隧道施工和运维面临极大挑战。本文首先介绍了软土的两大工程特性,即结构性和流变性。在此基础上,将软土盾构隧道工程问题分为施工期和运营期两类,对相关的研究分别进行了总结和评述。对于施工期,目前的研究主要聚焦隧道施工引起的扰动度评价方法、隧道开挖引起的地层沉降分析、隧道开挖面稳定性评价以及软土地层加固方法等;此外,部分研究着力解决软土盾构施工对周围环境(管线、建筑物)的影响控制。对于运营期,软土地层自身流变性和列车运营引起的长期沉降、软土地层邻近施工对既有盾构隧道的影响是研究的焦点。目前的研究表明,对于盾构施工软土地层扰动规律和复杂施工下的软土结构性损伤和塑性变形发展规律的准确理解和把握,是解决软土盾构隧道工程问题的关键。
Natural soft soils are widely distributed in Guangdong-Hong Kong region-Macao region Greater Bay Area,Yangtze River Delta and Bohai Bay Area.Tunnel construction and operation in these areas are facing great challenges.This paper introduces two engineering characteristics of soft soils,namely soil structure and rheology.On this basis,the engineering problems of shield tunnelling in soft soils are divided into construction period and operation period,and the related researches are summarized and reviewed.For the construction period,the current researches mainly focus on the evaluation of soil disturbance caused by tunnelling,the analysis of ground settlement,the stability evaluation of tunnel face and the ground improvement of soft soil stratum.In addition,some researches further investigate the control of the influence of tunnelling on the surrounding structures(pipelines,buildings).For the operation period,the long-term settlement of soft soil caused by its own rheology and train operation,and the influence of adjacent construction on existing shield tunnels are the focus of researches.Current researches show that the correct understanding and handling of the disturbance law of shield tunnelling in soft soils and the law of structural damage and plastic deformation of soft soils under complex construction disturbance are the key to solve the engineering problems of shield tunnelling in soft soils.
作者
黄昌富
苏栋
胡瑶
汪旭
祁文睿
李强
HUANG Changfu;SU Dong;HU Yao;WANG Xu;QI Wenrui;LI Qiang(China Railway 15th Bureau Group Co.,Ltd.,Shanghai 201306;College of Civil and Transportation Engineering,Shenzhen University,Shenzhen 518060;Key Laboratory of Coastal Urban Resilient Infrastructures(MOE),Shenzhen 518060;Zhuhai Dahengqin City New Center Development Co.,LTD.,Zhuhai 519030;Zhuhai Institute of Urban Planning&Design,Zhuhai 519000)
出处
《现代隧道技术》
CSCD
北大核心
2022年第S01期13-21,共9页
Modern Tunnelling Technology
基金
国家自然科学基金(51938008)
中铁十五局科研项目(CR15CG-ZH-HQMZSD-2021-00001(KJ))
关键词
结构性软土
流变性
盾构隧道
研究现状
Structural soft soil
Soil rheology
Tunnel
Current research status
作者简介
黄昌富(1971-),博士,正高级工程师,主要从事隧道与地下工程、地下空间灾害治理等方面的研究,E-mail:hcf1971@126.com;通讯作者:李强(1986-),男,博士,实验师,主要从事软土工程方面工作或研究,E-mail:parkli@szu.edu.cn
