Study of Application Technology of Chute Embedded  Outside Metro Shield Segment

doi:10.3973/j.issn.2096-4498.2018.10.018

Tunnel Construction ›› 2018, Vol. 38 ›› Issue (10): 1729-1733.DOI: 10.3973/j.issn.2096-4498.2018.10.018

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Study of Application Technology of Chute Embedded  Outside Metro Shield Segment

JIN Shihe¹, SUN Hongbin¹, LI Qiangnian², ZHANG Haijun¹

(1. Lanzhou Railway Transit, Lanzhou 730020, Gansu, China; 2. School of Civil Engineering, Lanzhou University of  Technology, Lanzhou 730020, Gansu, China)

Received:2018-03-14 Revised:2018-07-17 Online:2018-10-20 Published:2018-10-26

Abstract

Abstract:

The preembedded chute for shield segment cannot be replaced resulting from fullring embedding. Hence, the technology of chute embedded outside shield segment is studied by theoretical analysis and site experiment from the aspects of feasibility and safety, by taking Phase 1 of Lanzhou Metro Line No. 2 for example. It is concluded that: (1) The technology of chute embedded outside shield segment can meet relevant requirements; it is replaceable and easy to install; and by doing which 40% cost can be reduced. (2) The technology mentioned above is feasible for metro shield tunnel, highspeed railway shield tunnel, mined tunnel and urban utility tunnels; and it is worth popularizing.

Key words: Lanzhou Metro, shield segment, outsideembedded chute, preembedded chute

CLC Number:

U 457

JIN Shihe, SUN Hongbin, LI Qiangnian, ZHANG Haijun. Study of Application Technology of Chute Embedded  Outside Metro Shield Segment[J]. Tunnel Construction, 2018, 38(10): 1729-1733.

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Study of Application Technology of Chute Embedded  Outside Metro Shield Segment

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