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Evaluation of Drainage System and Coupled Analysis of Heat Transfer and Water Flow for Ice Ring formation in Daejeon LNG Pilot Cavern  

Jeong Woo-Cheol (SK건설 CEOTASK팀)
Lee Hee-Suk (SK건설 GSUC팀)
Lee Dae-Hyuck (SK건설 GSUC팀)
Kim Ho-Yeong (SK건설 GSUC사업담당)
Choi Young-Tae (SK건설 토목기술본부)
Publication Information
Tunnel and Underground Space / v.16, no.1, 2006 , pp. 38-49 More about this Journal
Abstract
LNG storage in lined rock cavern demands various techniques concerned with rock mechanics, thermo-mechanics and hydrogeology in design, construction and maintenance stage. LNG pilot cavern was constructed in Daejeon in order to verify these techniques. In this paper, evaluation of drainage system and ice ring formation was studied by numerical simulation. By Modflow analysis in the viewpoint of aquifer and Seep/W analysis in the viewpoint of flow system, it was verified that the drainage system in the pilot cavern was efficiently operated. Since ice ring formation can be simulated by interactive relation between heat transfer and water flow, coupled analysis of those was performed. In this analysis, the position of ice ring was presumed and it was demonstrated that the formation is affected by velocity and direction of groundwater flow.
Keywords
LNG storage; lined rock cavern; drainage system; ice ring; coupling analysis of heat transfer and water flow;
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