Browse > Article
http://dx.doi.org/10.7474/TUS.2011.21.5.341

A Case Study on the Design of Tunnel Excavation in Geological Anomalies  

Yoo, Joung-Hoon (코오롱건설 기반시설연구소)
Kim, Yang-Kyun (코오롱건설 기반시설연구소)
Chung, Chul-Hwa (코오롱건설 토목설계팀)
Publication Information
Tunnel and Underground Space / v.21, no.5, 2011 , pp. 341-348 More about this Journal
Abstract
As a result of the detailed site investigation performed for the design of a 4.3 km long tunnel, geological anomalies of four fault zones and a rock boundary were discovered on the tunnel route. Most of all, it was confirmed that pyrite, which may corrode steel material, is contained inside the geological anomalies, and pressured ground water flows out of the fault fractured zone. To overcome these geological conditions, antisulfur concrete for the concrete lining and anticorrosive swelling rock bolts are designed in the pyrite-containing sections. For the sections where a great amount of groundwater outflows, water blocking methods including grouting are applied according to the result of numerical analyses on the seepage. In addition, since the past earthquakes occurred around Korea have take place mainly near fault zones, seismic analyses were performed based on the Soil-Structure Interaction (SSI) concept and the strength of concrete tunnel lining is designed to be 27 MPa from 24 MPa in order to reinforce the tunnel structure.
Keywords
Fault zone; Pyrite; Pressured groundwater; Reinforcement solution; Seismic analysis;
Citations & Related Records
연도 인용수 순위
  • Reference
1 전형식, 윤건신 외 5명, 1996, 내진설계기준연구(I), 건설교통부.
2 함주익, 심연식, 1996, 폐광된 탄광의 갱내수 유출실태와 오염 및 처리방안검토, 한국화학공학회, 화학공학의 이론과 응용 제2권 제2호, pp. 1975-1978.
3 박인준, 최승호, 김재근, 2009, 대형 대단면 지하구조물의 내진해석 시 주요 영향인자 평가, 한국터널공학회 정기학술발표회 논문집, pp. 199-200.
4 George H. David and Stephen J. Reynolds, 1996, Structural geology of rocks and regions.-2nd ed., John Wiley & Sons, Inc., pp. 353-355.
5 한국도로공사, 2009, 도로설계요령 제4권 터널.
6 한국도로교통협회, 2010, 도로교설계기준.
7 해양수산부, 1999, 항만 및 어항시설의 내진설계표준서.
8 Cloos, E., 1968, Experimental analysis of Gulf Coast fracture patterns, American Association of Petroleum Geologists Bulletin 52, 420-444.