Study on the Safety and the Mine Design for Underground Mining at Hajang Limestone Mine

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2005 Vol.42, Issue 6 Preview Page Next Page

Study on the Safety and the Mine Design for Underground Mining at Hajang Limestone Mine 하장광산의 갱내채광을 위한 채광설계 및 안정성 연구: 선우춘, 정용복, 전양수, 이병주
Choon Sunwoo, Yong-Bok Jung, Yang-Soo Jeon and Byung-Joo Lee

31 December 2005. pp. 575-587

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Abstract

We have undertaken detailed investigations to change the mining methods from open-pit to underground and to design the underground mining operations at Hajang limestone mine. The detailed survey of geology, structural geology and borehole core was undertaken to verify the shape of deposit. The survey of discontinuities and Schmidt hammer test were also carried out and RQD values were obtained from the borehole cores. The relevant mechanical properties of rocks were determined by the laboratory test and the rock mass classification system for the mine design and input data for the numerical analysis. The dimensions of unsupported span for gangway, working place and pillar were decided based on the values of RMR as well as the Q system. The mining method was determined by considering the geometry of the deposit as well as the recovery. The stability for suggested mine design was examined through the 3-D numerical analysis.

Keywords

Underground mining

Rockmass classification

Mining method

Gangway and pillar

Safety

쌍용하장 석회석광산은 노천채광에서 지하채굴 방식으로 전환하기 위하여 다음과 같은 연구들이 수행되었다. 지질, 지질구조 및 코아 조사를 통한 광상의 확인, 현장의 불연속면 조사, Schmidt hammer 시험 그리고 시추코아에 대한 RQD 측정이 이루어졌다. 또한 광산설계 및 수치해석의 입력자료를 위하여 실험실 시험과 현지암반평가를 실시하였다. 이 값들을 이용하여 무지보 상태로 안정성을 유지할 수 있는 갱도 및 채광장의 규격과 광주의 크기를 결정하였고, 광체의 형태 등을 고려하여 채광법을 결정하였다. 조사자료를 바탕으로 설계된 갱도 및 채광장에 대해 3차원 수치해석으로 채광장의 안정성 검토를 실시하였다.

키워드

지하채굴

암반평가

채광법

갱도 및 광주

안정성

References

대한광업진흥공사, 2002, 정밀조사보고서(석회석: 삼척-하장지구), DS2002-LS(II).
선우춘외, 2004, 한국지질자원연구원보고서KR-04(c)-17, 석회석광산갱내채광및갱도의안전유지기술연구, 산 업자원부, p. 157
Barton N., Lien R. and Lunde J., 1974, “Engineering Classification of Rock Masses for the Design of Rock Support,” Rock Mechanics, vol. 6, pp189-236.
Barton N., 2002, “Some new Q-value correlations to assist in site characterization and tunnel design,” Int. J of Rock Mech. Min Sci, vol.39(2), pp. 185-216.
Bieniawski Z.T., 1968, “In-situ strength and deformation characteristics of coal,” Engng. Geol., Vol.2, pp. 325-340.
Bieniawski Z.T., 1973, “Engineering classification of rock masses,” Trans S. Afr Inst Civ Eng, Vol.15, No.12, pp. 335-344.
Bieniawski Z.T., 1989, Engineering rock mass classification, John Wiley & sons, New York, p. 251.
Hoek E. and Brown E.T., 1997, “Practical estimates of rock mass strength,” Int. J of Rock Mech Min Sci., Vol.34(8), pp. 1165-1186.
Holland C.T. 1964, “The strength of coal in mine pillars,” Proced. of 6th Symp. on Rock Mechanics, pp. 450-466.
Holmberg, R., 1982, “Charge Calculation for Tunnelling, in Underground Mining Methods Handbook,” Soc. of Mining Engineers of AIME, New York, 1580-1589.
Lynx Geosystems S.A. (Pty) Ltd, 2004, Lynx 4.9 User s Guide
Terry Wiles, 2004, MAP3D Manual, Mine Modelling Pty Ltd.
Serafim J.L., Pereira J.P., 1983, “Consideratrions of the Geomechanics classification of Bieniawski,” Proceedings of the International symp. Eng. Geology and Underground Construction, LNEC, Lisbon, pp. 1II-33-II-42.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society for Geosystem Engineering
Journal Title(Ko) :한국지구시스템공학회지
Volume : 42
No :6
Pages :575-587

[1] 대한광업진흥공사, 2002, 정밀조사보고서(석회석: 삼척-하장지구), DS2002-LS(II).

[2] 선우춘외, 2004, 한국지질자원연구원보고서KR-04(c)-17, 석회석광산갱내채광및갱도의안전유지기술연구, 산 업자원부, p. 157

[3] Barton N., Lien R. and Lunde J., 1974, “Engineering Classification of Rock Masses for the Design of Rock Support,” Rock Mechanics, vol. 6, pp189-236.

[4] Barton N., 2002, “Some new Q-value correlations to assist in site characterization and tunnel design,” Int. J of Rock Mech. Min Sci, vol.39(2), pp. 185-216.

[5] Bieniawski Z.T., 1968, “In-situ strength and deformation characteristics of coal,” Engng. Geol., Vol.2, pp. 325-340.

[6] Bieniawski Z.T., 1973, “Engineering classification of rock masses,” Trans S. Afr Inst Civ Eng, Vol.15, No.12, pp. 335-344.

[7] Bieniawski Z.T., 1989, Engineering rock mass classification, John Wiley & sons, New York, p. 251.

[8] Hoek E. and Brown E.T., 1997, “Practical estimates of rock mass strength,” Int. J of Rock Mech Min Sci., Vol.34(8), pp. 1165-1186.

[9] Holland C.T. 1964, “The strength of coal in mine pillars,” Proced. of 6th Symp. on Rock Mechanics, pp. 450-466.

[10] Holmberg, R., 1982, “Charge Calculation for Tunnelling, in Underground Mining Methods Handbook,” Soc. of Mining Engineers of AIME, New York, 1580-1589.

[11] Lynx Geosystems S.A. (Pty) Ltd, 2004, Lynx 4.9 User s Guide

[12] Terry Wiles, 2004, MAP3D Manual, Mine Modelling Pty Ltd.

[13] Serafim J.L., Pereira J.P., 1983, “Consideratrions of the Geomechanics classification of Bieniawski,” Proceedings of the International symp. Eng. Geology and Underground Construction, LNEC, Lisbon, pp. 1II-33-II-42.

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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