Correlation Between Drilling Parameter and Tunnel Support Pattern Using Jumbo Drill

Nag-Young Kim; Sung-Hwan Kim; Hyung-Sik Chung

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2001 Vol.3, Issue 4 Preview Page Next Page

Correlation Between Drilling Parameter and Tunnel Support Pattern Using Jumbo Drill 도로터널에서 지보패턴별 굴착지수 상관관계 고찰

31 December 2001. pp. 17-24

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Abstract

Four road tunnels of which the construction conditions were similar were selected in the paper, and laboratory tests and rockmass classification for the tunnels were carried out. And the analysis was performed to find out the correlation between ratio of bit abrasion or drilling parameter and support pattern of tunnel using jumbo drill machine. It was analyzed that there was average abrasion of bit from 11.85% to 3.25% per support patterns of tunnel in four tunnels. Drilling parameter happens to fluctuate according to extent of fracture zone.

Keywords

Drilling Parameter

Ratio Of Bit Abrasion

본 연구에서는 시공여건이 유사한 도로터널 4개소을 선정하여 실내시험 및 막장지질조사를 실시하였고 그 결과와 점보드릴을 활용하여 얻을수 있는 비트마모율과 굴착지수의 상관관계를 지보패턴별로 분석하였다. 연구대상 4개 도로터널에 대한 평균비트마모율은 지보패턴별로 1185%에서 325%로 차이를 보였고 굴착지수는 주로 파쇄대의 발달정도에 따라 변동이 발생하였다.

키워드

굴착지수

비트마모율

References

1. Carmichael, R.S. (1989), Practical Hand book of Physical Properties of Rocks and Minerals, pp.139-209

2. R. S. Sinha (1991),“ Underground Structures Design &Construction”, Elsevier, pp 31∼8

3. W. H. Hansmire (1984), “Example analysis for circular tunnel lining”, Proceedings of two sessions at GEOTECH ‘84, ASCE, pp 30∼4

4. Nicholson, G. A. and Z.T. Bieniawski (1990), “A Nonliner Deformation modulus based on rock mass classification”, Int. J. Min & Geological Eng, pp.181-202

5. Mohammad, N., D. J. Reddish and L. R. Stance(1997), “The relation between In situ and laboratory rock properties used in numerical modelling”, Int. J. Rock Mech. Min. Sci & Geomech, Abstr., Vol.34, No.2, pp181-202.

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 : 3
No :4
Pages :17-24

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

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