• Title/Summary/Keyword: 지하비축공동

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Groundwater Flow Characteristics Affected by the Seawater Intrusion near Simulated Underground Storage Caverns in the Coastal Area (임해지역의 모의 지하 비축 시설 주변에서 해수 침투에 의한 지하수 유동 특성)

  • 황용수;배현숙;서동일;김경수;김천수
    • The Journal of Engineering Geology
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    • v.9 no.1
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    • pp.17-29
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    • 1999
  • There are three major processes to impact the groundwater flow near underground storage caverns in the coastal area; effect of topography, effect of sea water intrusion, and effect of excavation. In this paper, the effects of three items were numerically studied to identify the major cause for altering the flow pattern. It turned out that the excavation is the most significant effect on the groundwater flow system. The groundwater pressure distributions and consequent groundwater pathways were significantly altered near the openings. By increasing the groundwater pressures from water curtain holes, the potential leakage of storage cavern was properly prevented

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지하원유저장 공동주위 암반의 변형거동 특성에 따른 지하수 유동해석

  • 장근무;이정인
    • Proceedings of the Korean Society for Rock Mechanics Conference
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    • 1994.03a
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    • pp.38-51
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    • 1994
  • 지하원유비축 기지 저장공동의 원유 유출이나 기화누설을 방지하기 위하여 지하수압을 조절하는 수벽공의 운영이나 공동주위 암반의 그라우팅 공법 설계에 있어서는 공동의 굴착으로 인한 주위 암반의 변형에 따른 투수계수의 변화와 지하수위의 변화에 대한 해석이 대단히 중요하다. 본 연구에서는 순간증압법을 이용한 삼축압축하의 암석의 투수계수 측정을 통하여 변형율과 투수계수와의 관계함수식을 구하였다. (중략)

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Feasibility Study of Underground LNG Storage System in Rock Cavern (LNG 지하공동 비축시스템의 타당성분석)

  • Chung, So-Keul;Han, Kong-Chang;Park, Eui-Seob
    • Tunnel and Underground Space
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    • v.16 no.4 s.63
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    • pp.296-306
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    • 2006
  • It is difficult to solve problems regarding the adjustment on demand and supply of LNG due to seasonal variations of domestic demand of LNG, a discordance among import pattern and limits of storage facilities and so on. Also, there may be instability in LNG supply due to chances of accidents at LNG producing areas. Therefore, it is very important to secure large LNG storage facilities and to stabilize LNG supply management on a long term basis. The objective of this study is to examine the real-scale applicability of a lined underground rock storage system, which have been verified by a successful operation of the Daejeon LNG pilot plant. The new technology has many advantages of better economy, safety and environment protection, for above-ground and in-ground storage systems. The results of this study may promote the first ever real scale underground LNG storage system in a rock cavern.

스웨덴과 노르웨이의 지하비축시설 관찰기

  • Kim, Yeong-Jun
    • Korea Petroleum Association Journal
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    • no.7 s.5
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    • pp.45-48
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    • 1981
  • 지난5월 스웨덴과 노르웨이 등 스칸디나비아 반도를 방문하여 이들 국가들이 전쟁에 대비하여 만들고 있는 각종지하시설들과 공동을 만드는 기술수준 ,노르웨이 북해유전개발 현황등을 연구시찰하였는바, 우리의 입장과 관련하여 간략히 소개하고자 한다.

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A comparative study on stability evaluation of caverns by 2D continuum analysis in terms of shape factor (2차원 연속체 해석에 의한 지하공동 형상비별 안정성 평가 비교)

  • You, Kwang-Ho;Jung, Ji-Sung
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.10 no.2
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    • pp.193-205
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    • 2008
  • The construction of underground structures such as oil and food storage caverns are recently increasing in our country. The stability of those underground caverns are greatly influenced by their shape and size. In this study therefore, the effect that the shape of an underground cavern have on its stability were analyzed in terms of safety factor. To this end, caverns with 5 different shapes were investigated and sensitivity analyses were performed based on rock class, overburden, and lateral earth pressure coefficient. The proper amount of shotcrete and rockbolt as supports of a cavern was also assumed based on the shape and site of the cavern and rock conditions. This study is expected to be helpful in designing and evaluating the stability of caverns in future.

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Hydrogeological Performance Assessment for Underground Oil Storage Caverns (지하유류비축시설 수리안정성 평가방안)

  • 김천수;배대석;김경수;고용권;송승호
    • The Journal of Engineering Geology
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    • v.7 no.3
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    • pp.229-245
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    • 1997
  • There are Common aspects between the underground oil storage cavern and the radioactive waste disposal facility. Both facilities use appropriately the intrinsic natural berrier characteristics of the rock mass and additionally the engineered barrier system for the long term safety. The geological structures and their hydrogeological characteristics in a faactured rock mass act a major role in the safety and performance of the underground oil storage facility through the design, construction and the operation stages. Because the fracture system distributed in a fractured rock block is complicated owing to their own geometrical and hydrogeological attributes, the hydrogeological perforrmrnce of the facility would depend mainly upon the understandings of their characteristics. This study reviews the uncertainties and key issues which have to be considered to analyse the groundwater flow system in a fractured rock mass and proposes the techniques applicable to characterize the hydrogeological parameter.

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Elasto-viscoplastic Dynamic Analysis of Subterranean Storage Cavern for Petroleum Reserve (석유비축을 위한 지하저장공동의 탄.점소성 동적해석)

  • 진지섭;김수석
    • Computational Structural Engineering
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    • v.2 no.2
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    • pp.53-62
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    • 1989
  • In recent times, the subterranean caverns for storing crude oils and oil products are increasingly needed. The elasto-VIScoplastic DYNamic finite element analysis program(VISDYN) has been developed in order to investigate dynamic responses of the storage cavity. And validity of the program is studied through a numerical example. Mohr-Coulomb yield criterion is adopted and associated flow rule is assumed. Geometrically nonlinear behaviour is taken into account using a total Lagrangian formulation. In dynamic deformation reponses, the difference between the steady state displacements and the unsteady state ones by the static analysis can be neglected.

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The effect of the shape factor of an underground cavern in good rock conditions on its stability by 2D discontinuum analysis (2차원 불연속체 해석에 의한 양호한 암반 내의 지하공동 형상비가 안정성에 미치는 영향 검토)

  • You, Kwang-Ho;Jung, Ji-Suug
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.11 no.2
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    • pp.189-198
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    • 2009
  • Recently the concern about the construction of underground structures such as oil and food storage caverns is increasing in Korea and abroad. The stability of those underground caverns is greatly influenced by shape factor and the size of excavation area as well as the joint conditions. In this study, therefore, the effect of the shape factor of an underground cavern on its stability was analyzed in terms of safety factor. To this end, four different shape factors of a cavern excavated in good rock conditions were investigated and sensitivity analyses were performed based on overburden, lateral earth pressure coefficient, joint spacing, properties, and orientation. The stability of a cavern is evaluated in terms of safety factor estimated numerically based on the shear strength reduction technique. In future, this study is expected to be helpful in designing and evaluating the stability of caverns excavated in discontinuous rock masses.

Underground Space Development and Strategy in Korea (국내 지하공간 개발 및 대책)

  • Shin, Hee-Soon
    • Tunnel and Underground Space
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    • v.23 no.5
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    • pp.327-336
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    • 2013
  • Approximately 70% of the Korean peninsula is composed of mountains, around 99,274 $km^2$. Even worse, population rate of Korea is the No.3 in the world now. Accordingly, it is necessary to develop the potential underground space actively with the concept of another territory to be utilized. The development of underground space should be considered not a choice but an indispensable issue. Since 1970s, many large-scale underground structures have been constructed like as crude-oil storage bins, liquefied petroleum gas storage caverns, and underground pumped storage powerplants. Also, In urban area, the underground facilities such as subway networks, underground shopping mall, underground pedestrian network, electric power tunnels, and car parking lots have been used extensively. The scale of Yeosu oil and gas underground storage facility and Seoul subway systems are one of the massive scale in the world. Recently, the trend of the development of underground space becomes more diverse and larger scale. The current status of Korean underground space developments and strategy are described in this paper.