铁路隧道下穿既有高速公路隧道施工控制技术研究

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Abstract Research purposes: The purposes are to ensure the construction safety of newly-built tunnel and make existing road open to traffic usually while the newly-built tunnel underneath passes existing tunnel nearby.

Research methods: According to the real construction situation of Guantouling Tunnel underneath passing existing expressway tunnel on Wenzhou-Fuzhou Railway Line and in combination with the research achievements at home and abroad, and current state codes, the analysis and research have be made on construction scheme for newly building a tunnel around cross point and on measures for monitoring and measuring the existing expressway tunnel based on the analysis of integrity level of existing tunnel and construction countermeasures.

Research results: Several construction techniques and their relative parameters and control standard are presented.

Research conclusions: (1) more attention should be paid to the serious harm probably caused by blast vibration nearby. Therefore, it is necessary to evaluate the lining strength of existing tunnel cavity distribution behind lining and earthquake resistant behavior of lining, to work out the basic control standard for blast vibration and make research on rational blast parameters before construction of intersection of Guantouling Tunnel. (2)When the working face of newly-built tunnel approaches to whole diameter of 3~4 times from cross point, the monitoring and measurement in the existing tunnel should be done well. With the analysis result of monitoring, the adjustments should be made rationally of excavation way, blast parameters and method of ignition in order to ensure the safety of the tunnel. (3)After finishing the construction of intersection the safety should be re-evaluated to tunnel lining structure near the cross point of existing tunnel in order that the tunnel will not be damaged with time passing by.

Key words： underneath pass existing tunnel integrity level construction blast vibration monitoring

Received: 22 February 2006

PACS:

U455

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	Articles by authors
	ZHENG Jun-jie
	BAO De-yong
	GONG Yan-feng
	ZI Yi

Cite this article:

ZHENG Jun-jie,BAO De-yong,GONG Yan-feng, et al. Research on Construction Control Technology for Railway Tunnel underneath Passing Existing Expressway Tunnel[J]. 铁道工程学报, 2006, 23(8): 80-84.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2006/V23/I8/80

[2]	Soliman E, Duddeck H, Aherns H. Two and three-dimensional analysis of closely spaced double-tube tunnels[J]. Tunneling and Underground Space Technology, 1993, 8(1):13-18.
[4]	陈卫军,朱忠隆.近距离交叠隧道研究现状及评析[J].现代隧道技术,2002,39(1):42-46.
[6]	GB6722-86,爆破安全规程[S].
[8]	铁道第二勘察设计院.铁路工程施工技术手册·隧道[M].北京:中国铁道出版社,1999.
[5]	TB10003-2005,铁路隧道设计规范[S].
[7]	齐景赢,等.隧道爆破现代技术[M].北京:中国铁道出版社,1999.
[3]	Yaxnaguchi I, Yaxnazaki H, Kiritani Y. Study of ground-tunnel interactions of four shield tunnels driven in close proximity[J]. Tunneling and Underground Space Technology, 1998, 13(3):289-304.
[1]	陈先国,高波.地铁近距离平行隧道有限元数值模拟[J].岩石力学与工程学报, 2002,21(9):1330-1334.