Numerical analysis on the general requirement of permanently unsupported tunnels

영구 무지보 터널의 일반적인 조건에 관한 수치해석적 연구

  • 윤지선 (인하대학교 환경토목공학부) ;
  • 류주열 ((주)삼보기술단 지반공학부)
  • Published : 2003.06.01


The present with in this country, rock bolt installation, shotcrete, and concrete lining in construction order has become accepted as a general tunnelling method in NATM. On the other hand Unlined tunnelling method, which was developed by many countries near Scandinavian Peninsula with hard rocks comparatively, has recently been introduced all over the world, and numerous studies about that have been being devoted to domestic tunnels. Unlined tunnelling method has been developed on the basis of the permanently unsupported openings, and general 7 requirements for them were suggested by Nick Barton. There are no case record about these conditions for Q-system in this country. Therefore, input parameters for Q-system under these conditions were applied to general road tunnel cross-section and numerical analyses for each condition were executed with UDEC-BB, Distinct Element Method.