• Journal of Korean Tunnelling and Underground Space Association
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• v.4 no.1
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• pp.13-25
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• 2002

The construction method for Young Dong Tunnel has been chosen following detailed risk assessment. In this paper, the specific risks to the project programme, associated with adopting either mechanical excavation in the form of a shielded TBM, or drill and blast excavation methods, are assessed. From the risk assessment results, and taking other important factors into account, such as project sensitivity and local experience, the recommendation is made that the relatively low risk drill-and-blast method is the most appropriate for construction of Young Dong Tunnel.

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.189-199
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• 2002

영동선 이설사업 일환으로 영동선 동백산역(강원도 태백시 연화동)과 도계역(삼척시 도계읍)간의 본 터널은 총 연장 16.4km인 장대터널로서 전북 완주 전라선 슬치터널(6.12km)보다 10km 이상 길고, 정선 고한과 태백 추전을 잇는 4.5km의 정암터널의 3배가 넘는다. 특히 이 터널은 구간의 높이 차(약 3백80m)를 극복하기 위해 Loop형태로 설계되었고, 열차의 안정성, 구난대피, 환기측면에서 단선병렬 터널로 설계되었다. 또한 불량한 선형과 노후된 터널구조물로 인한 열차 안전운행 저해요인을 해소하기 위해 천공발파공법을 굴착공법으로 채택하였다. (중략)

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.200-206
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• 2002

The construction method for the Young Dong Tunnel has been chosen following detailed risk assessment. In this paper, the specific risks to the project programme, associated with adopting either mechanical excavation in the form of a shielded TBM, or drill and blast excavation methods, are assessed. From the risk assessment results, and taking other important factors into account, such as project sensitivity and local experience, the recommendation is made that the relatively low risk drill-and-blast method is the most appropriate for construction of the Young Dong tunnel.

• Magazine of korean Tunnelling and Underground Space Association
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• v.1 no.2
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• pp.134-148
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• 1999

• Magazine of korean Tunnelling and Underground Space Association
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• v.2 no.2
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• pp.15-23
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• 2000

• Magazine of korean Tunnelling and Underground Space Association
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• v.11 no.1
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• pp.36-50
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• 2009

• Journal of Korean Tunnelling and Underground Space Association
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• v.5 no.1
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• pp.89-100
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• 2003

Seismic Reflection Methods (TSP, HSP) have been applied in the junction between 2nd Adit and Main Tunnel (Solan Tunnel) of Youngdiong Railroad (Mt. Dongbaek~Dokye). In this paper, methods and case study will be introduced to predict discontinuties in the tunnel before excavation by the Seismic Reflection Methods (TSP, HSP)and secure construction stability of the tunnel in blasting and excavation.

• Proceedings of the Korean Society for Rock Mechanics Conference
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• 2002.10a
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• pp.16-30
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• 2002

• Magazine of korean Tunnelling and Underground Space Association
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• v.14 no.2
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• pp.67-76
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• 2012

• Journal of Korean Tunnelling and Underground Space Association
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• v.4 no.2
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• pp.155-165
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• 2002

This paper presents a case study on the construction of a long tunnel named as "Solan tunnel", which connects between Mt. Dongbaek station and Dokye station in the Youngdong Railroad. The tunnel will be the longest tunnel with length of 16.4 km in Korea when completed. The tunnel site is located in a complex geological region with faults, cavities and coal measures. In construction of adit No. 2, geophysical investigation methods such as electrical resistivity method and GPR(Ground Penetration Radar) were used to detect faults, cavities and coal measures in advance with some success. The geophysical investigation results and in-situ boring data were used as feedback to improve tunnel reinforcement design. Also, the tube umbrellas of grouted steel pipes were found to have a good reinforcement and grouting effects in zones of faults, cavities. In zones of coal measures, swellex rockbolts with mortar grouting were verified as successful.