特大跨超浅埋地铁隧道下穿天桥过程稳定性控制

Abstract
Figure/Table
References (13)
Related Citation (15)

Download: PDF (1693 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract By analyzing the key effect factors of the stability and using numerical simulation for the complex excavation condition of Huahuiyuan metro tunnel，the corresponding control methods were proposed. And the stability of ultra shallow-buried tunnel with super large-span in the process of crossing bridge was investigated based on the monitoring results from excavation site. The results show that：(1) Its difficult to form an arch after the ultra shallow-buried tunnel with super large-span excavation and the obvious ground deformation caused by the excavation shows skewed which lead to the subsidence of No.2 pile exceeds the warning value. So，some strengthening measures must be taken. (2) The phenomenon of equivalent stress concentration in different parts of the tunnel structure has different sensitivities to the change of flat rate：the most sensitive part is skewback while the equivalent stress concentration in the vault does not change along with the flat rate. (3) The deformations of ultra shallow-buried tunnel with super large-span are mainly influenced by the excavation of each part，in which the dominant deformation is caused by core soil excavation and then by upper hole excavation. As a result，both of them are the key control parts. (4) Both sides heading method assisted by advanced small pipe grouting，backfilling grouting，short-hole micro seismic blasting and so on can control the ultra shallow-buried tunnel with super large-span stability in the process of crossing bridge effectively.

Key words： tunnelling engineering ultra shallow-buried tunnel with super large-span crossing bridge stability control both sides heading method

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LI Dong1
	2
	3
	HE Xingling1
	QIN Le1
	KANG Yong2
	4
	ZHOU Dongping1
	3
	GUO Chenye1
	3

Cite this article:

LI Dong1,2,3, et al. STABILITY CONTROL OF ULTRA SHALLOW-BURIED METRO TUNNEL WITH SUPER LARGE-SPAN IN PROCESS OF CROSSING BRIDGE[J]. , 2013, 32(s2): 3636-3642.

URL:

https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/3636

[1]	王梦恕. 地下工程浅埋暗挖施工技术通论[M].合肥：安徽教育出版社，2004：748-759.(WANG Mengshu. Technologyof shallow tunnel excavation[M].Hefei：Anhui Education Press，2004：748-759.(in Chinese))
[2]	张顶立，李鹏飞，侯艳娟，等. 浅埋大断面软岩隧道施工影响下建筑物安全性控制的试验研究[J].岩石力学与工程学报，2009，28(1)：95-102.(ZHANG Dingli，LI Pengfei，HOU Yanjuan，et al. Experimental study on safety control of buildings during construction of shallow- buried soft rock tunnel with large-section[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(1)：95-102.(in Chinese))
[3]	姚海波. 大断面隧道浅埋暗挖法下穿既有地铁构筑物施工技术研究[博士学位论文][D].北京：北京交通大学，2005.(YAO Haibo. Research on construction technology of large section tunnel crossing under the existing subway tunnel by means of shallow tunneling method[Ph. D. Thesis][D].Beijing：Beijing Jiaotong University，2005.(in Chinese))
[4]	施成华，彭立敏，刘宝琛. 浅埋隧道开挖对地表建筑物的影响[J]. 岩石力学与工程学报，2004，23(19)：3 310-3 316.(SHI Chenghua，PENG Limin，LIU Baochen. Influence of shallow tunnel excavation on ground surface buildings[J].Chinese Journal of Rock Mechanics and Engineering，2004，23(19)：3 310-3 316.(in Chinese))
[5]	郭军. 地铁隧道开挖诱发的地表沉降对邻近建筑结构的影响研究[硕士学位论文][D].北京：北京工业大学，2005.(GUO Jun. Investigation of influence of ground surface settlement induced by tunnel excavation on adjacent buildings[M. S. Thesis][D]. Beijing：Beijing Polytechnic University，2005.(in Chinese))
[6]	康勇，杨春和，何正，等. 煤系地层大跨度隧道围岩结构稳定性研究[J]. 岩土力学，2010，31(8)：266-270.(KANG Yong，YANG Chunhe，HE Zheng，et al. Stability analysis of surrounding rock structure of large-span tunnel passing through coal seams[J]. Rock and Soil Mechanics，2010，31(8)：266-270.(in Chinese))
[7]	蒋树萍，刘洪洲，鲜学福. 大跨度扁坦隧道动态施工的相似模拟与数值分析研究[J]. 岩土力学与工程学报，2000，19(5)：567-572. JIANG Shuping，LIU Hongzhou，XIAN Xuefu. Physical simulation and numerical analysis of dynamic construction behavior of large-span flat tunnel[J]. Chinese Journal of rock Mechanics andEngineering，2000，19(5)：567-572.(in Chinese))
[8]	PECK R B. Deep excavations and tunneling in soft ground[C]// Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering. Mexico：[s. n.]，1969：225-290.
[9]	ATTEWELL P B，YEATES J，SELBY A R. Soil movements induced by tunneling and their effects on pipelines and structures[M]. London：Blackie and Son Ltd.，1986：65.
[10]	宋克志，王梦恕，孙谋. 基于Peck公式的盾构隧道地表沉降的可靠性分析[J].北方交通大学学报，2004，28(4)：30-33.(SONG Kezhi，WANG Mengshu，SUN Mou. Reliability analysis of ground settlement with shield tunnel construction based on Peck formula[J]. Journal of Northern Jiaotong University，2004，28(4)：30-33.(in Chinese))
[11]	朱泽兵，刘新荣，张永兴.大跨超浅埋轻轨车站隧道开挖方法研究[J].岩石力学与工程学报，2005，24(2)：290-295.(ZHU Zebing，LIU Xinrong，ZHANG Yongxing. Study on excavation method for ultra-shallow-buried light railway station tunnels with large span[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(2)：290-295.(in Chinese))
[12]	李晓红.隧道新奥法及其量测技术[M].北京：科学出版社，2002：18-21.(LI Xiaohong. NNM andmeasure technology for tunnel[M]. Beijing：Science Press，2002：18-21.(in Chinese))
[13]	晏启祥，何川，姚勇.小净距隧道施工小导管注浆效果的数值模拟分析[J].岩土力学，2004，25(2)：239-242.(YAN Qixiang，HEChuan，YAO Yong. Numerical simulation analysis of little tremie grouting effect while construction of going into portal at small- distance tunnel[J]. Rock and Soil Mechanics，2004，25(2)：239-242.(in Chinese)