A comparative study on stability evaluation of caverns by 2D continuum analysis in terms of shape factor

2차원 연속체 해석에 의한 지하공동 형상비별 안정성 평가 비교

  • 유광호 (수원대학교 토목공학과) ;
  • 정지성 (수원대학교 토목공학과)
  • Published : 2008.06.30

Abstract

The construction of underground structures such as oil and food storage caverns are recently increasing in our country. The stability of those underground caverns are greatly influenced by their shape and size. In this study therefore, the effect that the shape of an underground cavern have on its stability were analyzed in terms of safety factor. To this end, caverns with 5 different shapes were investigated and sensitivity analyses were performed based on rock class, overburden, and lateral earth pressure coefficient. The proper amount of shotcrete and rockbolt as supports of a cavern was also assumed based on the shape and site of the cavern and rock conditions. This study is expected to be helpful in designing and evaluating the stability of caverns in future.