Statistical analysis of NTNU test results to predict rock TBM performance

Soo-Ho Chang; Soon-Wook Choi; Gyu-Phil Lee; Gyu-Jin Bae

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2011 Vol.13, Issue 3 Preview Page Next Page

Statistical analysis of NTNU test results to predict rock TBM performance TBM 굴진성능 예측을 위한 NTNU 시험결과의 분석

31 March 2011. pp. 243-260

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Abstract

To predict TBM performance in design stage is indispensable for its successful application. The NTNU model, one of the representative TBM performance prediction models uses two distinct parameters such as DRI and CLI obtained from three different tests on bored rock cores. Based on DRI and CLI, it is possible to predict TBM advance rate and cutter life in the NTNU model. In this study, NTNU testing methods and their related testing equipments were introduced to measure DRI and CLI for the NTNU model. Then, in order to derive their relationships, the two key parameters measured for 39 domestic rocks were compared with physico-mechanical properties of rock such as uniaxial compressive strength and quartz content. Lastly, the experimental results were also compared with NTNU database to verify their reliability.

Keywords

TBM

NTNU test

brilling rate index

cutter life index

성공적인 TBM의 적용을 위해 설계단계에서 TBM의 굴진성능을 사전에 예측하는 것이 매우 중요하다. 대표적인 TBM 굴진성능 예측모델 중의 하나인 NTNU모델에서는 TBM의 시추코어를 활용한 세 가지 시험들로부터 얻어지는 DRI와 CLI에 근거하여 TBM의 굴진율과 디스크커터의 수명 예측이 가능하다. 본 연구에서는 NTNU모델의 기본 입력변수인 DRI와 CLI를 측정하는 NTNU시험방법과 국내에서 구축된 NTNU시험장비를 소개하고, 구축된 장비를 사용하여 측정된 DRI와 CLI를 일축압축강도, 석영함유량 등의 암석 특성과 비교 ․ 분석하여 각각의 상관관계를 도출하였다. 마지막으로 NTNU의 시험 데이터베이스와의 비교를 통하여 국내에서 수행된 NTNU시험결과의 신뢰성을 확인하였다.

키워드

TBM

NTNU시험

천공속도지수

커터수명지수

References

1.정호영(2010), “암석의 압입 특성과 TBM 디스크 커터 절삭 성능과의 관계에 대한 실험적 분석”, 공학석사학위논문, 서울대학교 대학원.

2.Barton, N. (2000), “TBM Tunnelling in Jointed and Faulted Rock”, A.A. Balkema, Rotterdam.

3.Bruland, A. (1998a), “Hard rock tunnel boring - Background and discussion”, Vol. 1, Doctoral Theses at NTNU 1998:81.

4.Bruland, A. (1998b), “Hard rock tunnel boring - Advance rate and cutter wear”, Vol. 3, Doctoral Theses at NTNU 1998:81.

5.Bruland, A. (1998c), “Hard rock tunnel boring - Drillability test methods”, Vol. 8, Doctoral Theses at NTNU 1998:81.

6.Bruland, A. (1998d), “Hard rock tunnel boring - Drillability catalog of drillability indices”, Vol. 9, Doctoral Theses at NTNU 1998:81.

7.Cigla, M., Ozdemir, L. (2000), “Computer modeling for improved production of mechanical excavators”, Proc. of Society for Mining, Metallurgy and Exploration (SME) Annual Meeting, Salt Lake City, Utah, pp. 1-12.

8.Tarkoy, P.J. (1986), “Practical geotechnical and engineering properties for tunnel-boring machine performance analysis and prediction”, Transportation Research Record, pp. 62-77.

Information

Publisher :Korean Tunneling and Underground Space Association
Publisher(Ko) :한국터널지하공간학회
Journal Title :Journal of Korean Tunnelling and Underground Space Association
Journal Title(Ko) :한국터널지하공간학회 논문집
Volume : 13
No :3
Pages :243-260
Received Date : 2011-04-22
Revised Date : 2011-05-11
Accepted Date : 2011-05-20

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

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