A Numerical Study on the Safety of Tunnel Face Using Face Bolting Method

tunnel excavation generats stress release, a stability security of tunnel face is mainly important in case of tunnel excavation in the weak grounds. using the steel bar or glass fiber pipe which had regular hardness, a face bolt method to reinforce previously is applied to an excavation object tunnel face aspect among measures methods regarding this. Therefore, used FLAC3D Ver. 2.1 on 5 Case of 0.5D (2EA), 1.0D, 1.5D, 2.0D with the length and 6 Case of 0, 20, 40, 60, 80, 100EA with the number of the bolt that a face bolt method was installed at these papers in the necessary weak grounds in order to review applicability of the tunnel face reinforcement method that used these face bolts, and executed three dimension continuous analysis.

keywords: Rock bolt, non-destructive test, guided wave, dispersion, defect ratio, AE (acoustic emission), 터널 막장 안정, 페이스 볼트 공법, 3차원 연속체 해석

Reference

(2006) 터널 안정화를 위한 페이스볼트의 효율적 배치에 관한 수치해석적 연구,

(2000) 수평보강재로 보강된 터널 막장의 거동,

모형실험에 의한 수평보강재로 보강된 터널 막장의 거동 분석,

(1991) NATM 工法의 調査·設計·施工,

(2003) 비점성토 지반의 얕은 터널에 적용된 프리라이닝 공법의 유효성 평가,

(2003) 프리라이닝의 지표침하 억제효과에 관한 모형실험,

(2000) プレライニング工法,

(2002) Theory and Background,

바로가기메뉴

Article Contents

Vol.9 No.1

A Numerical Study on the Safety of Tunnel Face Using Face Bolting Method

Abstract

Reference

(사)한국터널지하공간학회