Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
권호 표지

Comparison of Rock Mass Classification Methods

암반등급 분류법들의 비교연구

  • 박철환 (한국지질자원연구원 지반안전연구부) ;
  • 박찬 (한국지질자원연구원 지반안전연구부) ;
  • 신중호 (한국지질자원연구원 지반안전연구부)
  • Published : 2006.06.01
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Abstract

This report is to introduce an article to compare 3 kinds of methods as RMR, Q-system and RMi published in Tunnel and Tunnelling Technology 2003. As rock mass classification is applied to estimate the amount of the support as an empirical design method, an attempt has been made to evaluate the parameters for classifications and their variations by Professor Nilsen and his team in Norway. Representability and reproducibility in measuring the field parameters are discussed and sensitivity of rating values in the three methods is also analyzed in this research. Although some parameters have high variation in rating among the 5 observers, the rock mass class has been found to be quite similar.

본보는 터널전문지에 게재된 RMR과 Q, RMi 등의 3개의 암반분류법을 비교한 논문을 소개하는 것이다. 암반 분류법은 경험적 방법으로 지보설계에 적용되고 있는데, Nilsen 교수는 그의 연구팀과 함께 암반분류법의 변수들과 이들의 분산을 평가하는 연구를 시도하였다. 이 연구에는 현장의 여러 변수들을 평가하는데 요구되는 대표성과 반복성에 대하여 논하며, 또한 세가지 분류법에서 평점에 대한 민감성을 언급하고 있다. 비록 몇가지 변수들은 측정자에 따라 상당히 큰 측정편차를 갖고 있음에도 불구하고, 암반등급은 매우 유사한 것으로 평가퇴고 있음이 밝혀졌다.

Keywords

References

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