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Study on the Fuzzy Inference System for Objectivity of Ground Evaluation in Tunnelling  

조만섭 ((주) 유니벡 제1사업본부 터널팀)
김영석 (전북대학교 공과대학 자원공학과)
Publication Information
Tunnel and Underground Space / v.13, no.1, 2003 , pp. 6-19 More about this Journal
Abstract
This study has for its object to increase an objectivity of the observation result in the face mapping of tunnel and to suggest the reasonable support and reinforcement methods to be considered the rock properties. It was developed in this study to the tunnel stability evaluation system(Prototype NFEST) to be used fuzzy set theory and neuro-fuzzy techniques, and this system was verified according to the reliability evaluation between the 36 learning data and the inferred results. When it summarized the results; (1) 12 evaluation items and ranges were proposed to be modified basis on the RMR which are well known to the domestic workers. (2) It was shown that correlation coefficient(│R│) between $RMR_{inf}$ inferred by 12 items and $RMR_{org}$ due to arithmetic total, $RMR_{chk}$ due to subjective judgement of observer are relatively high relationship with each 0.83 and 0.79. (3) Inferred result of the total tunnel safety shows also a good relationship with $RMR_{inf}$ (│R│=0.7) and the rock weathering(│R│=0.84).
Keywords
RMR; Fuzzy set theory; NFEST; Rock classification(modified);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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