• Proceedings of the Korean Society for Rock Mechanics Conference
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• 1994.03a
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• pp.89-101
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• 1994

기 발표된 보문에서, 정수두압이 작용하는 수갱측벽의 두께 산정과 수갱굴하의 특성을 간략하게 설명하였다. 이 두 부문에 대해서는 계속 다루어 나갈 예정이며, 본 회부터는 수갱굴하의 원론적인 문제도 다루기도 한다. 광산이나 탄광의 수갱은, 심부에 부존하는 광체 또는 탄층에서 채굴된 광물과, 갱도굴진에서 나온 버럭을 권양하고, 작업인원, 제반 자재, 압기동력원이 되는 전기, 급수 등을 공급하여 안전한 갱내작업을 유지하기 위한 통기회로를 형성시키고, 또한 갱내수를 배출하는 다목적의 대동맥과 같은 역할을 하는, 말하자면 광산의 가장 핵심체이다. (중략)

• Tunnel and Underground Space
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• v.5 no.1
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• pp.57-69
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• 1995

"수갱공사의 기술적 문제에 대해서(ll)"에서 4가지 특성중 굴하용 권양기의 용량을 결정하는 지표가 되는 한계심도의 결정, 대형 수갱 또는 출수가 많은 경우 폭약의 불발 사고를 방지하는 방법을 다루었으며, 금회에는 수갱의 출수문제를 검토하기로 한다. 검토하기로 한다.

• Proceedings of the Korean Society for Rock Mechanics Conference
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• 1995.03a
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• pp.220-238
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• 1995

수갱공사의 기술적 문제에 대해서 (II)에서 4가지 특성중 굴하용 권양기의 용량을 결정하는 지표가 되는 한계심도의 결정, 대형 수갱 또는 출수가 많은 경우 폭약의 불발사고를 방지하는 방법을 다루었으며, 금회에는 수갱의 출수 문제를 검토하기로 한다. (중략)

• Tunnel and Underground Space
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• v.28 no.6
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• pp.609-619
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• 2018

This study was carried out at a local limestone mine to analyze the ventilation efficiency of the shaft equipped with a main fan. The results show that its ventilation efficiency is clearly verified for the natural as well as the mechanical ventilation. The airflow rate of $11.7m^3/s$ was induced by the natural ventilation force and the maximum quantity is almost same as the airflow rate estimated by monitoring the average temperatures in the upcast and downcast air columns. Meanwhile, the airflow rate exhausted by the main fan through the shaft was $20.3{\sim}24.8m^3/s$; variation of the quantity was caused by the upward shift of the mine ventilation characteristic curve due to the frequent movement of the equipment. This indicates efforts are required to reduce the ventilation resistance and raise the quantity supplied by the main fan. The turbulent diffusion coefficients along the 1912 m long airway from the portal to the shaft bottom was estimated to be $15m^2/s$ and $18m^2/s$. Since these higher coefficients imply that contaminants will be dispersed at a faster velocity than the airflow, prompt exhaust method should be planned for the effective air quality control. The ventilation shaft and main fan are definitely what local limestone mines inevitably need for better working environment and sustainable development.

• Explosives and Blasting
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• v.39 no.3
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• pp.15-23
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• 2021

Ventilation shafts are pathways in mines and tunnels for the removal of dust or smoke during underground space construction and operation. In mines, blasting with long blast holes is preferred for the excavation of a ventilation shaft in the 10~20m long crown pillar section. In this case, the bottom part of the blast hole is completely drilled in order to determine the drilling error, and this causes a problem of lowering the explosive charge and blasting efficiency. It is possible to solve the problem of explosive loading and to increase the blast efficiency by covering the curb of the blasthole by using stemming material. In this study, simulations for the blasting of a ventilation shaft were performed with various stemming lengths and the blasthole diameters(45, 76mm) using AUTODYN 2D SPH(Smooth particle hydrodynamics) analysis technique. Also the optimal bottom stemming column was derived by checking the size of the boulder and burden line according to blasting. Analysis result, blasting efficiency is lessened in case of stemming length less than 30cm and the optimal length of the stemming material should be 30cm or higher to achieve high efficiency of blasting.

• Tunnel and Underground Space
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• v.3 no.2
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• pp.152-162
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• 1993

• Journal of the Korean Professional Engineers Association
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• v.19 no.1
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• pp.39-42
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• 1986

• Journal of the Korean Professional Engineers Association
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• v.18 no.3
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• pp.36-44
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• 1985

• Tunnel and Underground Space
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• v.1 no.2
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• pp.158-167
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• 1991

• Journal of the Korean Professional Engineers Association
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• v.1 no.4
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• pp.26-34
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• 1968