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2015 Vol.17, Issue 6 Preview Page
A preliminary study on the use of analytic hierarchy process for selecting a optimum trenchless excavation method

최적의 비개착공법 선정을 위한 계층분석법의 적용에 관한 기초연구

Tae-Ho Kang1
,
Soo-Ho Chang2
,
Soon-Wook Choi3*
,
Chulho Lee3
,
Jinwoo Cho4
강 태호1
,
장 수호2
,
최 순욱3*
,
이 철호3
,
조 진우4
1Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology, Senior Researcher
2Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology, Research Fellow
3Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology, Researcher
4Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology, Senior Researcher
1한국건설기술연구원 지반연구소 선임연구원
2한국건설기술연구원 지반연구소 연구위원
3한국건설기술연구원 지반연구소 전임연구원
4한국건설기술연구원 지반연구소 수석연구원
*교신저자. *Corresponding Author. 
30 November 2015. pp. 685-693
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Abstract

The room-and-pillar construction method for underground space is adopted from the room-and-pillar mining method which is one of the most popular underground mining method in the world. Drainage system in the room-and-pillar underground construction method can be similar with the concept of single shell in tunnel because additional reinforcement except the TSL (thin spray-on liner) is not applied in the room-and-pillar construction method. That is, to decrease groundwater level and maintain safety in tunnel, the drainage pin hole inside lining (shotcrete) can be used. However, if total amount of outflow in the underground structure is relatively small or groundwater is not detected, such drainage system will not be useful and cause additional construction cost. In this study, outflow of conventional tunnels in South Korea was investigated and the criteria to determine whether the drainage pin hole is effective was suggested. And the guided drainage system was suggested when drainage pin hole was not applied in the room-and-pillar construction method.

Keywords
Trenchless excavation
Decision making
Optimization
Analytic hierarchy

도심지에서는 지속적인 지하 개발이 요구되고 있으며, 도심지공사는 주변구조물 및 기존 도로의 기능을 유지하면서 신속하게 진행되어야한다. 이러한 상황에서 비개착공법은 시공 시 주변 지반의 변위를 최소화하고 건설을 진행하기에 매우 유용한 공법이다. 그러나 비개착공법 선정을 위해서는 경제성, 시공성, 환경문제, 주변구조물 등 다양한 현장조건들을 고려하여야 한다. 따라서 본 연구에서는 의사결정기법을 활용하여 비개착공법의 최적 선정을 위한 기초연구를 수행하였다. 특히, 다중복합의사결정기법 중에 하나인 계층분석법을 이용하여 전문가 의견을 반영한 합리적인 공법선정의 평가기준과 규칙을 설정하였다. 분석 결과, 비개착공법을 선정하는데 있어서 필요한 고려항목들의 중요도를 도출하였고, 지반조건별로 가장 효과적인 비개착공법들이 제시되었다.

키워드
비개착공법
공법선정
의사결정
최적화
계층분석
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Information
  • Publisher :Korean Tunneling and Underground Space Association
  • Publisher(Ko) :한국터널지하공간학회
  • Journal Title :Journal of Korean Tunnelling and Underground Space Association
  • Journal Title(Ko) :한국터널지하공간학회 논문집
  • Volume : 17
  • No :6
  • Pages :685-693
  • Received Date : 2015-11-09
  • Revised Date : 2015-11-19
  • Accepted Date : 2015-11-23
  • DOI :https://doi.org/10.9711/KTAJ.2015.17.6.685
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