Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집)

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Harmony search algorithm to predict anomalous zone ahead of tunnel face utilizing electrical resistivity survey

터널 굴착면 전방의 이상지반 예측을 위한 전기비저항 기반 하모니서치 (HS) 역해석 알고리즘

  • Park, Jin-Ho (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Lee, Kang-Hyun (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Shin, Sang-Hoon (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Lee, Seong-Won (SOC Research Institute, Korea Institute of Construction Technology) ;
  • Lee, In-Mo (School of Civil, Environmental and Architectural Engineering, Korea University)
  • 박진호 (고려대학교 건축사회환경공학부) ;
  • 이강현 (고려대학교 건축사회환경공학부) ;
  • 신상훈 (고려대학교 건축사회환경공학부) ;
  • 이성원 (한국건설기술연구원 SOC 성능연구소 Geo-인프라 연구실) ;
  • 이인모 (고려대학교 건축사회환경공학부)
  • Received : 2014.02.19
  • Accepted : 2014.03.07
  • Published : 2014.03.30
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Abstract

The objective of this study is the application of the harmony search (HS) algorithm and verification of the accuracy of inverse analysis to predict the location, thickness and electrical properties of anomalous zone ahead of tunnel face when utilizing the electrical resistivity survey using electrical resistivity of the ground. The relationship correlating the characteristic values of the anomalous zone with the electrical resistance values was derived using Gauss' laws and Ohm's laws. Inverse analysis program was developed to predict anomalous zone by using electrical resistivity based on HS algorithm. Electrical resistance measuring system is devised to obtain the electrical resistivity of the ground, and laboratory tests were performed on anomalies to verify the proposed HS algorithm. The test results show that the characteristics of the anomalies are predicted reasonably well resulting in less than 5% error when predicting the location and thickness of the anomaly.

본 연구의 목적은 전기비저항을 사용한 터널 굴착면 전방의 이상지반 탐사 시 이상지반의 위치와 두께 및 전기적 특성을 예측하기 위한 하모니서치(Harmony Search, HS) 알고리즘의 적용과 역해석 정확성의 검증이다. 가우스법칙(Gauss' laws)과 옴의 법칙(Ohm's laws)으로부터 이상지반 존재 시 암반의 전기저항과 이상지반 특성 변수를 연관 짓는 관계식을 유도하고, 전기저항을 사용하여 이상지반 특성 변수를 예측하도록 HS 알고리즘 기반의 역해석 프로그램을 개발하였다. 지반의 전기비저항을 측정하기 위한 저항 측정 시스템을 제작하였으며, 제안된 HS 알고리즘을 검증하기 위해 실내실험으로 모사한 이상지반의 전기저항을 측정하여 역해석을 수행하였다. 그 결과, 이상지반의 위치와 두께에 대한 예측은 5% 이하의 낮은 오차율을 나타내어 이상지반의 특성을 높은 정확도로 예측함을 보였다.

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References

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