• 한국정보통신설비학회:학술대회논문집
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• 2003.08a
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• pp.376-378
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• 2003

본 논문에서는 2002년도에 KT에서 개발한 내경 1,000mm의 무인통신구를 건설 할 수 있는 마이크로터널링 장비에 대해 소개하고자 한다. 개발된 장비는 3D 기법을 이용한 최첨단 기법을 통하여 개발되었으며, 소형 굴진기의 취약점인 장애물 돌파능력을 보완하기 위하여 막장으로 진입이 가능한 구조로 되어있다. 따라서 굴진 중 장애물에 직면했을 경우 막장을 통하여 장애물을 효과적으로 제거할 수 있으며, 이 막장 진입통로를 이용하여 면판의 비트와 롤러커터를 교체할 수 있으므로 장거리 굴진이 가능하다. 그리고 굴진작업 시 필요한 원압잭과 후방설비인 Desander, 송 배니펌프등의 주변설비를 Operating Room에서 통합관리 할 수 있는 터널링 관리시스템을 개발하여 적용함으로써 보다. 효율적인 굴진관리를 수행할 수 있는 특징을 갖고 있다. 이렇게 개발된 장비와 시스템은 시험 시공을 통해 그 성능을 확인하였으며, 여기서 그 개발 과정 및 시험 시공 결과에 대해 기술하고자 한다.

• Proceedings of the Korean Geotechical Society Conference
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• 1997.03a
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• pp.113-124
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• 1997

• Geotechnical Engineering
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• v.29 no.2
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• pp.21-27
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• 2013

• Journal of Korean Tunnelling and Underground Space Association
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• v.17 no.4
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• pp.441-455
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• 2015

In the present study, a face safety monitoring system was developed that will enable judging collapse risks on faces during tunnel construction to secure workers' safety. This system enables detecting abnormal behaviors of faces by analyzing the displacement of faces measured in real time using the x-MR control chart technique. In addition, an algorithm to judge false alarms was developed so that abnormal behaviors of faces and errors occurring in the process of work can be distinguished from each other by comparing the number of measured values exceeding the management criteria and moving range k. The results of the present study are applicable to real-time monitoring of behavior on the face in dangerous ground sections to minimize damage to workers.

• Magazine of korean Tunnelling and Underground Space Association
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• v.19 no.2
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• pp.10-22
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• 2017

• Magazine of korean Tunnelling and Underground Space Association
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• v.19 no.1
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• pp.4-17
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• 2017

• The Journal of Engineering Geology
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• v.26 no.2
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• pp.187-196
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• 2016

We conducted three-dimensional finite element analysis to predict the presence of upcoming fault zones during tunneling. The analysis considered longitudinal displacements measured at tunnel face, and used 28 numerical models with various fault attitudes. The x-MR (moving range) control chart was used to analyze quantitatively the effects of faults distributed ahead of the tunnel face, given the occurrence of a longitudinal displacement. The numerical models with fault were classified as fault gouge, fault breccia, and fault damage zones. The width of fault cores was set to 1 m (fault gouge 0.5 m and fault breccia 0.5 m) and the width of fault damage zones was set to 2 m. The results, suggest that fault centers could be predicted at 2~26 m ahead of the tunnel face and that faults could be predicted earliest in the 45° dip model. In addition, faults could be predicted earliest when the angle between the direction of tunnel advance and the strike of the fault was smallest.

• Magazine of korean Tunnelling and Underground Space Association
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• v.20 no.2
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• pp.12-16
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• 2018

• Magazine of korean Tunnelling and Underground Space Association
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• v.19 no.3
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• pp.6-12
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• 2017

• Magazine of korean Tunnelling and Underground Space Association
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• v.19 no.4
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• pp.11-16
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• 2017