Safety Control Technology for the Newly Constructed Shield Tunnels Approaching Existing Metro Lines Underneath

Download: PDF (4677KB) HTML (1KB) Export: BibTeX or EndNote (RIS) Supporting Info

Abstract It poses severe challenges to the normal operation of existing railway lines and the safe construction of the under-constructed projects when the metro shield construction underneath passes through existing railway lines,so the proper construction measures to be adopted are essential. Take a new shield tunnel in Chengdu as the background, a construction method for the shield tunnel underneath existing railway line is discussed, a pipe-roof test is conducted, the countermeasures for risks are proposed, and the monitoring measures and plans for potential risk sources are established. The practical effect shows: the design scheme for the shield passing existing railway line underneath meets the relative specifications and standards requirements of existing railway line; detailed scheme for risk prevention and controlling should be established aiming at different risk sources as for the various projects passing through underneath, and monitoring and measuring should be emphasized to give a scientific feedback to the observational construction.

	Service

	Email this article
	Add to my bookshelf
	Add to citation manager
	Email Alert
	RSS
	Articles by authors
	YAO Xiaoming1 SHU Bo2 LI Bo

Keywords： Chengdu metro Earth pressure balance shield machine Passing existing shield tunnel underneath; Monitoring and measuring

Abstract： It poses severe challenges to the normal operation of existing railway lines and the safe construction of the under-constructed projects when the metro shield construction underneath passes through existing railway lines,so the proper construction measures to be adopted are essential. Take a new shield tunnel in Chengdu as the background, a construction method for the shield tunnel underneath existing railway line is discussed, a pipe-roof test is conducted, the countermeasures for risks are proposed, and the monitoring measures and plans for potential risk sources are established. The practical effect shows: the design scheme for the shield passing existing railway line underneath meets the relative specifications and standards requirements of existing railway line; detailed scheme for risk prevention and controlling should be established aiming at different risk sources as for the various projects passing through underneath, and monitoring and measuring should be emphasized to give a scientific feedback to the observational construction.

Keywords： Chengdu metro, Earth pressure balance shield machine, Passing existing shield tunnel underneath; Monitoring and measuring

Cite this article:

YAO Xiaoming1 SHU Bo2 LI Bo .Safety Control Technology for the Newly Constructed Shield Tunnels Approaching Existing Metro Lines Underneath[J] MODERN TUNNELLING TECHNOLOGY, 2020,V57(5): 243-

URL:

http://www.xdsdjs.com/EN/ 或 http://www.xdsdjs.com/EN/Y2020/V57/I5/243