• JOURNAL OF ELECTRICAL WORLD
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• no.9 s.201
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• pp.52-57
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• 1993

• 도로교통
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• s.83
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• pp.28-41
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• 2001

• 도로교통
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• s.100
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• pp.107-114
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• 2005

• 한국도로학회지:도로
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• v.2 no.1
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• pp.79-84
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• 2000

• 한국도로학회지:도로
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• v.13 no.2
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• pp.17-27
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• 2011

• 한국도로학회지:도로
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• v.3 no.1 s.7
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• pp.103-106
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• 2001

• 한국도로학회지:도로
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• v.8 no.4 s.30
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• pp.42-45
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• 2006

• 한국도로학회지:도로
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• v.18 no.1
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• pp.6-8
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• 2016

• KSCE Journal of Civil and Environmental Engineering Research
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• v.35 no.6
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• pp.1405-1412
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• 2015

In Korea, public infrastructure projects employ "long term continuation (LTC) contracts," which require budgets to be reevaluated and re-appropriated annually throughout the multi-year life of the project. However, such contracts also make it susceptible to frequently changing government policies, in which budgets required for existing projects are allocated to new projects and thus does not provide a consistent stream of capital to multi-year projects. Each year, the KEC needs to attain government funds for construction of its multiple highway construction sites. Because it is difficult to know the amount that may be actually appropriated to KEC in a given year, it is in turn difficult to anticipate and provide sufficient funds necessary for construction to run smoothly and continuously. The lack of a good logic for appropriation has resulted in projects having a skewed distribution of capital. To get better budget appropriations from the central government, the KEC first needs a systemized approach that rationalizes the annual construction capital optimally required for its individual sites. The goal of this research was to devise a way that allows the KEC to determine and calculate the optimal construction costs that would be required for its individual construction sites on an annual basis. Both the optimal progress rate and the essential work types were assessed through a workshop with 24 professionals (KEC employees and contractors) who had extensive experience in KEC projects and also were currently working in these projects.

• Journal of Korean Tunnelling and Underground Space Association
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• v.24 no.3
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• pp.279-292
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• 2022

Unexpected anomalies in the geotechnical investigation at design stage may cause problems during tunnel excavation. Therefore, it is important to predict the ground condition ahead of a tunnel face during tunnel excavation in order to prevent tunnel collapse. Despite the fulfillment of an electrical resistivity survey at the tunnel face, the existing electrical resistivity survey program can produce distorted results by the limitation of tunnel modelling. In this background, this study develops a modelling program for an electrical resistivity survey considering the tunnel shape. Numerical simulation and inverse calculation were performed for the electrical resistivity survey in the tunnel using the developed program. As a result, it was proved that the developed program could predict accurately the anomalous object's location and condition ahead of the tunnel face.