Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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A Basic Study on Effect Analysis of Adjacent Structures due to Explosion of Underground Hydrogen Infrastructure

지하 수소인프라 폭발에 따른 인접 구조물 영향 분석에 대한 기초 연구

  • Choi, Hyun-Jun (Northern Infrastructure Specialized Team, Korea Institute of Civil Engineering and Building Techonology) ;
  • Kim, Sewon (Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Techonology) ;
  • Kim, YoungSeok (Northern Infrastructure Specialized Team, Korea Institute of Civil Engineering and Building Techonology)
  • Received : 2022.08.26
  • Accepted : 2022.09.01
  • Published : 2022.09.30
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Abstract

For carbon neutrality, interest in R&D and infrastructure construction for hydrogen energy, an eco-friendly energy source, is growing worldwide. In particular, for hydrogen stations installed in downtown areas, underground hydrogen infrastructure are being considered to increase a safety distance from hydrogen tank explosions to adjacent structures. In order to design an appropriate location and depth of the underground hydrogen infrastructure, it is necessary to evaluate the impact of the explosion of the underground hydrogen infrastructure on adjacent structures. In this paper, a numerical model was developed to analyze the effect of the underground hydrogen infrastructure explosion on adjacent structures, and the over pressure of the hydrogen tank was evaluated using the equivalent TNT (Trinitrotoluene) model. In addition, parametric analysis was performed to estimate the stability of adjacent structures according to the construction conditions of the underground hydrogen infrastructure.

최근 탄소중립을 위하여 친환경 에너지원인 수소 에너지에 대한 연구 개발 및 인프라 구축에 대한 관심이 증가되고 있다. 특히, 도심지에 설치되는 수소충전소의 경우에는 수소저장탱크 폭발에 따른 인접 구조물의 안정성을 확보하기 위하여 폭발 위험이 있는 수소저장탱크를 지하(지중)에 배치하여 충분한 안전거리를 확보하는 방안이 고려되고 있다. 적절한 지하 수소인프라의 위치 및 심도를 선정하기 위하여 지하 수소인프라 폭발에 따른 인접 구조물의 영향 평가가 필요하다. 본 논문에서는 지하 수소인프라 폭발에 따른 인접 구조물의 영향을 분석하기 위한 수치모델을 구축하였으며, 등가 TNT (Trinitrotoluene) 모델을 활용하여 수소저장탱크의 폭발압을 산정하였다. 또한, 매개변수해석을 수행하여 지하 수소인프라의 시공조건에 따른 인접 구조물의 안정성을 평가하였다.

Keywords

Acknowledgement

This research was supported by a KICT Research Program(project no. 20220232-001, Development of technology to secure safety and acceptability for infrastructure in hydrogen city) funded by the Ministry of Science and ICT.

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