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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.8 No.1
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Field Experiment on the Optimaization of Concave-Shaped Face Development for Rapid Tunnel-Whol-Face Excavation

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2006, v.8 no.1, pp.65-76


& (2006). Field Experiment on the Optimaization of Concave-Shaped Face Development for Rapid Tunnel-Whol-Face Excavation. (사)한국터널지하공간학회, 8(1), 65-76.
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Abstract

In this study, NATM can reduce the loosened ground near the tunnel face more than the other pre-existing tunnelling methods, because of rapid supporting by means of shotcrete and rock bolts. However, this method sometimes can not help for a unstable tunnel face with a unsupported caondition. In order to keep from that dangerous case, some excavation methods such as bench cut and drift advancing method are introduced, despite of high construction cost and period. So, this thesis is intended to introduce the new tunnel face shape, that is concave shaped face, and discusses its effects on the tunnel stabilization.

keywords
곡면막장, 직립막장, 수평경사계, Concave-shaped face, plane-shaped face, horizontal inclinometer

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(1991) NATM공법의 조사,

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(1996) 지하공간건설공학,

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(2000) 토목기술자를 위한 지질조사 및 암반분류,

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(1980) Underground excavations in rock,

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