|
|
|
| Method for Determining the Minimum Security Coping Thickness of Sub-aqueous Tunnel |
| YAN Cai-bin, ZHOU Wei |
| China Railway No.2 Engineering Group Co. Ltd., Hengyang, Hunan 421600, China |
|
|
|
|
Abstract Research purposes：Based on the engineering analogy and numerical analysis, the method is offered for determining the minimum security coping thickness of sub-aqueous tunnel for offering the reference to the similar works.
Research conclusions：(1) The Norwegian Experience Curve Method is the simple stand the most easy and it is suitable for the primary determination at the early stage of geological survey while the construction period is pressed, but its result is conservative and needs to be economically verified at later stage. (2) The Water-resisting Rock Column Experience Formula can accurately determine the minimum security coping thickness and its result can be as the reference after the geological condition is well known. (3) The result obtained with numerical analysis is the most accurate, but the numerical analysis needs lots of certain conditions. Only when the external conditions, such as working condition, engineering geological condition and hydrogeologic condition, are determined can establish the model for returning the original construction condition, so its result can be as the reference to the final determination.
|
|
Received: 22 January 2010
|
|
|
|
|
|
[ 1 ] Itasca公司. FLAC3D3.0版用户手册[K].美国: Itasca公司, 2005: 22 -29.
Itasca Consulting Group, Inc.. FLAC3D, Fast Lagrangian Analysis of Continua, Version 3.00, User.s Manual[K]. USA: Itasca Consulting Group, Inc., 2005: 22-29.
[ 2 ] JTCD 70—2004,公路隧道设计规范[S].
JTCD 70—2004, Design Specification of Highway Tunnel[S].
[ 3 ] 李术才,李树忱,等.海底隧道最小岩石覆盖厚度确定方 法研究[J].岩石力学与工程学报,2007(11):2289 -2295.
Li Shucai, Li Shuchen, etc. Study on Determination Method for Minimum Rock Cover of Sub-sea Tunnel[J]. Chinese Journal of Rock Mechanics and Engineering, 2007(11): 2289 -2295.
[ 4 ] 王梦恕,皇甫明,等.海底隧道修建中的关键问题[J]. 建筑科学与工程学报, 2005(4): 1 -4.
Wang Mengshu, Huang Fuming, etc. Key Problems on Sub-sea Tunnel Construction[J]. Journal of Architecture and Civil Engineering, 2005(4): 1-4.
[ 5 ] 孙钧,等.海底隧道工程设计施工若干关键技术的商榷[J]. 岩石力学与工程学报, 2006(8): 1513 -1521.
Sun Jun, etc. Discussion on Some Key Technical Issues for Design and Construction of Undersea Tunnels[J]. Chinese Journal of Rock Mechanics and Engineering, 2006(8): 1 513 -1 521.
[ 6 ] 张明平,徐园园,等.海底隧道最小安全顶板厚度优化决策研究[J]. 青岛理工大学学报, 2008(1): 14 -18.
Zhang Mingping, Xu Yuanyuan, etc. Research on the Optimized Decision-making Method of the Least Security Coping Thickness of Sub-sea Tunnel[J]. Journal of Qingdao Technological University, 2008(1):14 -18.
[ 7 ] 吕明,丁万涛,等.挪威海底隧道经验[J]. 岩石力学与工程学报, 2005(23): 4219 -4225.
Lv Ming, Ding Wantao, etc. Norwegian Experience in Sub-sea Tunneling[J]. Chinese Journal of Rock Mechanics and Engineering, 2005(23): 4219-4225.
[ 8 ] 王刚.裂隙岩体海底隧道最小岩石覆盖厚度研究[D].山东:山东科技大学, 2005.
Wang Gang. Study on Rock Cover of Sub-sea Tunnel in Jointed Rock Mass [D]. Shandong University of Science and Technology, 2005.
[ 9 ] 张燕琼.软硬岩交互地层水下隧道最小岩石覆盖层厚度研究[D]. 重庆:重庆大学, 2007.
Zhang Yanqiong. Study on Rock Cover of Sub-sea Tunnel Meeting the Alternatively Layers of Soft and Hard Rocks[D]. Chongqing: Chongqing University, 2007.
|
|
|
|
2010, Vol. 27 
