文档介绍：第 27 卷第 5 期岩石力学与工程学报 Vol. 27 No. 5
2008 年 5 月 Chinese Journal of Rock Mechanics and Engineering May,2008
厦门海底隧道海域风化槽段围岩稳定性研究
陈卫忠 1,于洪丹 1,郭小红 2,卢海峰 1,贾善坡 1,伍国军 1
(1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉 430071;
2. 中交第二公路勘察设计研究院有限公司,湖北武汉 430056)
摘要:厦门东通道海底隧道是一项规模宏大的跨海工程,是连接厦门市本岛和翔安区陆地的重要通道,也是中国
大陆第一座采用钻爆法修建的大断面水底隧道,工程于 2007 年下半年由陆域进入施工难度最大、最危险的海域部
分,其中的海底风化槽地段采用 CRD 工法进行施工,隧道开挖、支护过程中围岩和支护结构的受力和变形特征
广为人们所关注,因此对于该段隧道稳定性的研究具有重要意义。应用大型有限元软件 ABAQUS,依据流固耦合
理论,对翔安隧道风化槽段隧道 CRD 工法的施工过程进行了三维动态仿真数值模拟,研究隧道施工过程中围岩
的应力场、位移场、外水压力分布规律以及支护结构受力情况和衬砌外水压力的分布规律,研究成果为该隧道施
工和同类工程建设提供了理论依据和实践经验。
关键词:海底隧道;CRD 工法;流固耦合;有限元模拟
中图分类号:U ;O 241 文献标识码:A 文章编号:1000–6915(2008)05–0873–12
STUDY ON STABILITIES OF SURROUNDING ROCKS THROUGH
WEATHERED SLOT IN XIAMEN SUBSEA TUNNEL
CHEN Weizhong1,YU Hongdan1,GUO Xiaohong2,LU Haifeng1,JIA Shanpo1,WU Guojun1
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of
Sciences,Wuhan,Hubei 430071,China;2. Second Highway Consultants Co.,Ltd.,Wuhan,
Hubei 430056,China)
Abstract:East passageway of Xiamen subsea tunnel is a huge sea-crossing project. It is a significant route
connecting Xiamen island with Xiang′an city. Furthermore,it is the first large cross-section subsea tunnel in
China,which is constructed with drill and blasting method. The construction will go through the most unfavorable
strata and the most difficult construction was found in the latter half year of 2007. The CRD method is used to
excavate the weathered slot. The mechanical behaviors and deformational characteristics of the supporting
structures and host rock during the tunnel excavation are highly focused on recently. From the characteristics of
the excavation,based on the hydro-mechanical coupling theory,the CRD construction process in the weathered
slot is simulated with finite element software ABAQUS. The distributions of stresses,exter