A preliminary study on the excavation sequence of a room-and-pillar underground structure by the drill-and-blast method

Chulho Lee; Younghwan Hyun; Junho Song; Soo-Ho Chang

doi:10.9711/KTAJ.2015.17.6.605

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2015 Vol.17, Issue 6 Preview Page Next Page

A preliminary study on the excavation sequence of a room-and-pillar underground structure by the drill-and-blast method 발파 굴착에 의한 주방식 지하구조물의 굴착공기 분석 연구

30 November 2015. pp. 605-614

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Abstract

A room-and-pillar underground structure is characterized by its grid-type array of room and pillar. As a result, its construction and economical efficiency can be governed by excavation sequence. In this study, the construction period by the drill and blast method which can be treated as a main sequence for excavation was examined by considering the regulation for blasting and construction standard of estimation in Korea. To evaluate the construction period for the room-and-pillar underground structure constructed in 4 kinds of square-type area (30×30~57×57 m), the concurrent excavation pattern which was suggested in the previous researches was used. From the suggested condition, the total construction period by drill-and-blast method can be estimated with the consideration of the construction area, number of jumbo drill and faces in operation.

Keywords

Room-and-pillar underground structure

Drill and blasting

Excavation

Construction period

주방식 지하구조물은 여러 개의 암주의 룸으로 구성된 격자 형태의 구조물로 굴착순서에 따라 주방식 지하구조물의 시공성과 경제성이 좌우될 수 있다. 본 연구에서는 주방식 지하구조물의 굴착공정에서 중요하게 다뤄질 수 있는 발파굴착 공정을 장비 운영과 현행 발파 규정 및 건설공사 표준품셈에 근거하여 검토하였다. 굴착공법으로는 점보드릴을 이용한 발파공법을 가정하였으며, 기존 연구에서 제시한 가로․세로 순차시공방식으로 검토하였다. 주방식 지하구조의 계획부지 크기에 따라 굴착공기와 장비운영 등을 고려하여 전체 굴착공정을 예상할 수 있었으며 막장운영 계획에 따라 운영가능한 장비수를 고려하여 전체 굴착공기를 예상할 수 있었다.

키워드

주방식 지하구조물

발파굴착

굴착

굴착공기

References

1.Chun, J., So, B., Choo, J, Woo, S. (2005), “Simulation based productivity analysis for NATM operations”, Journal of the Korean Society of Civil Engineers, Vol. 25, Issue. 3D, pp. 457-462 (in Korean).

2.Darling, P. (2011), Mining Engineering handbook, Society for Mining, Metallurgy and Exploration, INC.(SME), 3rd Edition.

3.Hartman, H.L., Mutmansky, J.M. (2002), Introductory Mining Engineering. 2^nd edition, Wiley, New Jersey.

4.Hoek, E., Brown, E.T. (1980), Underground Excavation in Rock, Institution of Mining and metallurgy.

5.Korea Express Corporation (2000), Construction management for drill-and-blasting method in tunnel (in Korean).

6.Lee, C., Hwang, J., Kim, E., Chang, S-H. (2014a), “Consideration on design procedure of room-and- pillar underground structure, Part I: parametric study”, J. of Korean Tunn Undergr Sp Assoc, Vol. 16, No. 5, pp 487-495 (in Korean).

7.Lee, C., Hur, J., Hyun, Y., Chang, S-H. (2014b), “Consideration on design procedure of room- and-pillar underground structure, Part II: selection of shape to design supports”, J. of Korean Tunn Undergr Sp Assoc, Vol. 16, No. 5, pp 497-506 (in Korean).

8.MLTO (Ministry of Land, Infrastructure and Transport Ordinary) (2011), Standard Estimating System of Construction (in Korean).

9.Svanholm, B.O., Persson, P.A., Larsson, B. (1977), “Smooth blasting for reliable underground openings”, In Rockstore 77: Storage in excavated rock caverns, proc. 1st Int. Symp., Stockholm, (ed. M. Bergman), pp. 573-579. Oxford: Pergamon.

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 : 17
No :6
Pages :605-614
Received Date : 2015-10-16
Revised Date : 2015-10-28
Accepted Date : 2015-10-30
DOI :https://doi.org/10.9711/KTAJ.2015.17.6.605

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

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