浅埋盾构隧道端头土体稳定性极限平衡分析

doi:10.13722/j.cnki.jrme.2015.02.020

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Abstract A working shaft enclosed by the continuous wall must be built at two ends of the tunnel to be excavated for shield starting and arriving in shield tunneling. Soil body at two ends of the tunnel may collapse along a sliding surface and pose a high risk in shield tunneling. A combined sliding mode of straight line and logarithmic spiral line was proposed for shallow shield tunnel. A formula to calculate the stability of the soil at the ends of shallow tunnel was deduced by means of limit equilibrium analysis and the factors influencing the soil stability were analyzed with the derived formula. The soil stability at tunnel ends is dependent on the soil strength，the thickness of reinforced soil body，the strength of reinforced soil body and the diameter of tunnel outlet. The greater the internal friction angle and the cohesion of the soils are，the higher the soil stability. The greater the thickness and the strength of the reinforced soils are，the higher the soil stability. The soil stability at tunnel end decreases with the increasing of the diameter of the tunnel outlet. The method was successfully used to calculate the soil stability and the thickness of the reinforcement of soil body of a shield tunnel of metro in Nanjing.

Key words： tunnelling engineering shield tunnel soils at tunnel end stability limit equilibrium analysis thickness of reinforced soil body

Received: 30 December 2013

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.02.020 OR http://www.rockmech.org/EN/Y2015/V34/I02/407

[5]	辛振省，王金安，马海涛，等. 盾构始发端预加固合理范围研究[J]. 地下空间与工程学报，2007，3(3)：513-518.(XIN Zhenxing，WANG
[1]	JJGA日本ジェットグラウト协会. ジェットグラウト工法[R]. 東京：鹿島研究所出版会，1991：17-24.(in Japanese) " target="_blank">
[2]	赖剑明，白云. 盾构顶管进出洞洞口土体破坏机理的三维非线性有限元分析[J]. 岩土工程师，1994，6(1)：11-15.(LAI Jianming，BAI Yun. 3D Nonlinear Analysis of the failure of the soil after the open for shield or pipe jacking machine to be pushed in or out[J]. Geotechnical Engineer，1994，6(1)：11-15.(in Chinese))
[4]	辛振省. 水下盾构地铁隧道典型区段建设稳定性研究[硕士学位论文][D]. 北京：北京科技大学，2007.(XIN Zhenxing. Study on the stability of typical construction sections in underwater shield subway tunnel projects[M. S. Thesis][D]. Beijing：University of Science and Technology Beijing，2007.(in Chinese)) " target="_blank">
	Jin?an，MA Haitao，et al. Study on rational scope of pre-reinforcement at starting position for shield excavation[J]. Chinese Journal of Underground Space and Engineering，2007，3(3)：513-518.(in Chinese)) " target="_blank">
[7]	张庆贺，唐益群，杨林德. 盾构进出洞注浆加固设计与施工技术研究[J]. 地下工程与隧道，1993，(4)：93-101.(ZHANG Qinghe，TANG Yiqun，YANG Linde. Study on the technology of design and construction of grouting reinforcement for shield department and reception[J]. Underground Engineering and Tunnel，1993，(4)：93-101.(in Chinese)) " target="_blank">
[3]	刘建航，侯学渊. 基坑工程手册[M]. 北京：中国建筑工业出版社，1997：38-43.(LIU Jianhang，HOU Xueyuan. Foundation pit engineering handbook[M]. Beijing：China Building Industry Press，1997：38-43.(in Chinese)) " target="_blank">
[6]	吴韬. 大型盾构进出洞施工技术及加固土体受力机理分析[硕士学位论文][D]. 上海：同济大学，2006.(WU Tao. Research on construction technique and mechanism of reinforced soil for department and reception of large scale shield[M. S. Thesis][D]. Shanghai：Tongji University，2006.(in Chinese)) " target="_blank">
[10]	李大勇，王晖，王腾，等. 盾构机始发与到达端头土体加固分析[J]. 铁道工程学报，2006，(2)：87-90.(LI Dayong，WANG Hui，WANG Teng，et al. Analysis of soil reinforcement for the starting and arriving of shield machine in metro construction[J]. Journal of Railway Engineering Society，2006，(2)：87-90.(in Chinese))
[14]	赵彭年. 松散介质力学[M]. 北京：地震出版社，1995：36-53. (ZHAO Pengnian. Loose medium mechanics[M]. Beijing：Seismological Press，1995：36-53.(in Chinese)) " target="_blank">
[8]	胡新朋，孙谋，王俊兰. 软土地区地铁盾构施工端头土体加固要求探讨[J]. 隧道建设，2006，26(5)：11-13.(HU Xinpeng，SUN Mou，WANG Junlan. Discussions on criteria for soil reinforcement during EPB shields? launching and arrival construction in soft ground[J]. Tunnel Construction，2006，26(5)：11-13.(in Chinese))
[9]	孙振川. 城市地铁盾构法隧道软土地段端头地层加固技术[J]. 西部探矿工程，2003，(10)：81-83.(SUN Zhenchuan. Study on end soil reinforcement technology for city metro shield tunnel in soft soil stratum[J]. West China Exploration Engineering，2003，(10)：81-83.(in Chinese))
[11]	朱世友，林志斌，桂常林. 盾构始发与到达端头地层加固方法选择与稳定性评价[J]. 隧道建设，2012，32(6)：788-795.(ZHU Shiyou，LIN Zhibin，GUI Changlin. Reinforcement technology for stability analysis on end soil in shield launching and arrival[J]. Tunnel Construction，2012，32(6)：788-795.(in Chinese))
[12]	江玉生，王春河，江华，等. 盾构始发与到达——端头加固理论研究与工程实践[M]. 北京：人民交通出版社，2011：56-185.(JIANG Yusheng，WANG Chunhe，JIANG Hua，et al. Shield launching and arriving—theoretial study and engineering practice on end rinforcement[M]. Beijing：People?s Communications Publishing House，2011：56-185.(in Chinese)) " target="_blank">
[13]	彭玉鲸. 天体、地球、生物的一种自相似律——对数螺线[J]. 吉林地质，1999，18(3)：1-10.(PENG Yujing. Celestial body，the earth，biological objects，a self similarity of log spiral line[J]. Jilin Geology，1999，18(3)：1-10.(in Chinese)) " target="_blank">