Page 108 - 捷運技術 第55期

臺北盆地邊緣潛盾隧道遭遇複合地層之設計考量與施工規劃 | 陳建仁等

Received May 30, 2020, accepted August 30, 2020, date of publication October 31, 2020

Design Consideration and Construction Plan

of Shield Tunnelling Through Composite

Stratum in Edge of Taipei Basin

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CHIENJEN CHEN , CHENGLIN CHANG , GWORONG YANG , AND ROGER KUO 3

1. Second District Project Office, Department of Rapid Transit Systems, Taipei City Government,
Taipei 105037, Taiwan(R.O.C.)
2. MAA Engineering Consultants, New Taipei City 221411, Taiwan(R.O.C.)
3. DAIHO Corporation, Taiwan Branch, Taipei 104083, Taiwan(R.O.C.)
Corresponding authors: Chienjen Chen ( e-mail : 18290@dorts.gov.tw)
ABSTRACT Xinyi Line Project Extension East CR285 of Taipei MRT is located
on the east side of the central part of the Taipei basin. Project includes station,
cross-over and ventilation shaft with cut and cover method, and shield tunnels
with shield machines. Since the shield tunnel is mainly drilled in the composite
strata of alluvial deposit, colluvial deposit and rock formation, the construction
difficulty and risks are obvious and significantly higher than general shield tunnel
construction. Thus, it is worth to share with engineering. This article mainly
introduces the design considerations and construction planning of shield tunnel
of CR285, including the selection of shield machines, grouting methods, building
protection, approaching tunnel construction and instrument monitoring etc..
Hopefully through the appropriate design considerations and pre-construction
planning, the construction risk can be reduced to the lowest and the project is
smoothly completed.

INDEX TERMS Shield Tunnel, alluvial Deposit, colluvial deposit, rock
Formation, composite stratum

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