Current Status of Rock Cutting Technique Using Undercutting Concept

Hoyoung Jeong; Seungbeom Choi; Seokwon Jeon

doi:10.7474/TUS.2019.29.3.148

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2019 Vol.29, Issue 3 Preview Page Next Page

Technical Note

Current Status of Rock Cutting Technique Using Undercutting Concept 언더커팅 개념을 적용한 암반절삭기술의 현황 분석

30 June 2019. pp. 148-156

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Abstract

In urban area, the use of mechanical excavators (e.g., TBM and roadheader) has been increasing in construction of tunnelling and underground space. The undercutting technology, which is modified from the conventional rock-cutting concept, has been developed by advanced countries. Therefore, research on the latest technology of mechanical excavation is required, and keeping carrying out research on conventional mechanical tunneling methods at the same time. In this study, as a fundamental study of the undercutting technique, the principle and concept of the undercutting were introduced, as well as the current status of the research of advanced countries. The undercutting is applicable as a full-face excavation method for the tunnels and underground spaces, as well as an auxiliary(partial-face excavation) method for extension of the existing tunnels.

Keywords

Mechanized rock cutting

Rock excavation

Tunnelling

Undercutting

Case study

최근 도심지에서의 터널 및 지하공간 개발에 있어 TBM을 비롯한 다양한 형태의 기계식 굴착장비의 적용이 증가하고 있다. 한편 기존의 전통적인 암석절삭방식에서 변형된 언더커팅방식 적용한 암반의 기계식 굴착공법에 대한 연구가 선진국을 중심으로 수행되어 소개된 바 있다. 따라서 국내에서도 기존의 암반기계굴착에 대한 연구를 지속적으로 수행함과 동시에 최신 기술에 대한 연구가 요구된다. 본 연구에서는 언더커팅에 대한 기초연구로서 해당 기술의 원리 및 굴착방식에 대한 소개와 더불어 해외 선진 기관들의 연구 현황을 조사하였다. 언더커팅공법은 터널 및 지하공간의 개발을 위한 단독공법으로 적용이 가능할 뿐만 아니라 터널의 확공 및 기존 공간의 확장을 위한 보조공법으로의 활용성도 우수한 것으로 판단되었다.

키워드

기계화 암석절삭

암반굴착

터널굴착

언더커팅

사례조사

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Information

Publisher :Korean Society for Rock Mechanics and Rock Engineering
Publisher(Ko) :한국암반공학회
Journal Title :Tunnel and Underground Space
Journal Title(Ko) :터널과 지하공간
Volume : 29
No :3
Pages :148-156
Received Date : 2019-06-17
Revised Date : 2019-06-26
Accepted Date : 2019-06-26
DOI :https://doi.org/10.7474/TUS.2019.29.3.148

Tunnel and Underground Space ISSN:1225-1275(Print) 2287-1748(Online) 터널과 지하공간

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