단층대 터널굴착시 안정성 확보에 관한 연구

A Study of Stability Analysis for Tunnelling in Fault Zone

  • 홍창수 (삼성물산(주) 건설부문 기술연구팀) ;
  • 황대진 (삼성물산(주) 건설부문 기술연구팀) ;
  • 이강호 (삼성물산(주) 건설부문 TA팀) ;
  • 이용훈 (삼성물산(주) 건설부문) ;
  • 이창원 (서영기술단)
  • 발행 : 2005.03.25

초록

This paper deals with the numerical study for excavation crossing the fault zone and the change of support pattern in field. The numerical analyses by FLAC program were performed to evaluate the suitable support pattern influenced by the width of Fault Zone, considering rock mass condition(RMR classification). Based on the results, it is found that partial reinforcement or degrading support pattern is suitable, when the width of Fault is under 3m. But when the width of Fault is more than 6m(0.5D), extra support pattern for fault zone is acceptable. At field, this result is generally used as a guide in the construction of roadway tunnel, but it is also possible to vary this assessment along the condition of fault.

키워드