• The Journal of Engineering Geology
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• v.16 no.3 s.49
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• pp.307-313
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• 2006

• Proceedings of the KSEEG Conference
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• 2002.04a
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• pp.83-85
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• 2002

• Proceedings of the SAREK Conference
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• 2003.07a
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• pp.243-243
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• 2003

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.06a
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• pp.487-491
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• 2008

UFSN 지하시설물관리시스템에서 유량, 유속, 압력, 진동 등의 센서 정보를 실시간으로 모니터링 하기 위해서는 미들웨어의 기능과 설계가 중요하다. 본 논문에서는 UFSN 지하시설물관리시스템 미들웨어의 센싱 데이터의 오류 데이터를 분류하기위한 방안에 대한 연구를 수행하였다. 센싱 데이터 인터페이스를 정의하였고, 테스트를 위한 게이트웨이와 UFSN 지하시설물관리시스템을 개발하여 미들웨어 테스트를 수행하였다.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.36-37
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• 2007

지중배전설비의 시공품질 향상과 정전을 감소시키기 위해 지중설비의 시공과정을 동영상으로 촬영하여 내실 있는 시공을 유도하고, 촬영된 영상 자료를 편집하여 국산 3D GIS 기반의 DB에 저장할 수 있도록 하였다. 평상시엔 개인용 컴퓨터로 설비점검 스케줄에 따라 관리하다가, 돌발적인 정전이 발생하면 시공당시의 정보를 조회하여 신속히 대응할 수 있는 지중배전설비 시공관리시스템을 연구 개발하였다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2001.11a
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• pp.284-293
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• 2001

본 연구는 지하공동구내의 화재가 자주 발생하므로 도시가 마비되고 그 피해는 국민생활을 위협하고 막대한 재산 및 인명피해를 내고 있다. 지하공동구 화재로 인한 조기진압은 소방법의 연소방지설비 기준에 적용하였을 경우 화재 진압시 문제가 있다고 판단된다. 지하공동구의 연소방지설비 중에는 여러방식을 적용할 수가 있다. 본 연구는 물로 이용한 연소방지설비 방식중 스프링클러설비, 연결살수설비, 물분부설비 등이 있으나 아직 소방법에서 거론되지 않는 일명 워터 미스트 방식에 대해서 연구하고 방안제시를 하므로 이 논문지가 연소방지설비의 기초자료가 되었으면 한다.

• Journal of the Korean Institute of Gas
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• v.18 no.3
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• pp.44-52
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• 2014

Small petrol stations have great potential for a wide distribution in metropolitan area in which the land value possesses primary installation cost of the facility. The objective of the present study is to propose appropriate facility regulations of small petrol stations in Korea that can be popularly installed in the future in terms of securing safety in addition to serviceability. The hazard analysis and damage prediction from the possible fire and explosion accidents were performed using a software, PHAST v.6.5. As essential components of the facility regulations proposed in this study, the regulations about the refueling lot, maximum capacity of underground tank, location of fixed refueling facilities, height of firewall for small petrol stations were subsequently compared with those for regular-sized petrol stations.

• Journal of Korea Water Resources Association
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• v.52 no.3
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• pp.227-234
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• 2019

The vulnerability of urban disasters is increased with the rapid urbanization and industrialization, and the extreme rainfall event is increased due to the global climate change. Urban inundation is also increased due to the extreme rainfall event beyond the capacity limit of facility for the damage prevention. The underground detention vault and the underground drain tunnel are rapidly being utilized to prevent urban inundation. Therefore, the hydraulic review and design analysis of the inlet of the underground facility are important. In this study, the water level of the approach flow according to the inflow discharge is measured and the flow characteristic of the inlet (tangential and spiral) is analyzed. For the spiral inlet, the multi-stage is introduced at the bottom of the inlet to improve the inducing vortex flow at low discharge conditions. In case of the tangential inlet, the discharging efficiency is decreased rapidly with hydraulic jump in the high flow discharge. The rising ratio of the water level in the multi-stage spiral inlet is higher than the tangential inlet, but the stable discharging efficiency is maintained at low and high discharge conditions. And the empirical formula of water level-flow discharge is derived in order to utilize inlets used in this study.

• Journal of Korean Tunnelling and Underground Space Association
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• v.23 no.5
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• pp.339-357
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• 2021

As the construction of trans infrastructure using the underground tunnel have been rapidly increased, various nearby excavation of existed underground facility including subway structure has been occurred in urban tunnelling. The concern and worry relating to the safety and stability of the existed facility by nearby excavation is becoming the key issues in urban tunnelling. In this study, it was conducted for existed the subway station structure at Seoul subway line which was closely located in the new Dongbuk urban metro railway to determine the behavior characteristics of station structure according to adjacent tunnel construction. Also, it was reviewed the evaluation of the safety zone and excavation method for subway structure. And after a review of damage evaluation, track irregularities and structural calculation by using a numerical analysis, stability of the subway structure according to nearby tunnel excavation was evaluated to be secured. This study is expected to be applied as useful reference in advance if you need to review the effects of existed structure according to nearby construction in complex urban tunnelling.

• Journal of the Korean Geotechnical Society
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• v.38 no.11
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• pp.107-118
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• 2022

The social need for stable hydrogen storage technologies that respond to the increasing demand for hydrogen energy is increasing. Among them, underground hydrogen storage is recognized as the most economical and reasonable storage method because of its vast hydrogen storage capacity. In Korea, low-depth hydrogen storage using artificial protective structures is being considered. Further, establishing corresponding safety standards and ground stability evaluation is becoming essential. This study evaluated the hydro-mechanical behavior of the ground during a hydrogen gas leak from a low-depth underground hydrogen storage facility through the HM coupled analysis model. The predictive reliability of the simulation model was verified through benchmark experiments. A parameter study was performed using a metamodel to analyze the sensitivity of factors affecting the surface uplift caused by the upward infiltration of high-pressure hydrogen gas. Accordingly, it was confirmed that the elastic modulus of the ground was the largest. The simulation results are considered to be valuable primary data for evaluating the complex analysis of hydrogen gas explosions as well as hydrogen gas leaks in the future.