• Title/Summary/Keyword: 지하구조

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Rock Mechanics at Great Depth (대심도에서의 암반역학적 문제)

  • Park, Eui-Seob;SunWoo, Chun
    • Proceedings of the Korean Geotechical Society Conference
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    • 2009.09a
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    • pp.573-583
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    • 2009
  • 심부암반에 건설되는 지하공동의 형상과 규모는 지질구조, 암반조건 및 건설방법 (굴착, 보 강)에 따라 변화될 수 있으므로 이전에 사용해오던 공동의 크기와 형상을 그대로 답습하는 관행을 탈피하고 지하공동이 갖고 있는 특수한 용도와 목적에 따라 대형화, 심부화 추세로 가고 있는 지하공동의 설계개념을 수립하여야 한다.

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Guideline for the Diagnose of Geotechnical Structure (Underground Oil Storage Cavern) using a Microseismic Monitoring System (음향미소진동기반 모니터링 시스템을 이용한 지반구조물(유류 지하저장시설) 진단평가 가이드라인)

  • Cheon, Dae-Sung;Jung, Yong-Bok
    • Tunnel and Underground Space
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    • v.28 no.4
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    • pp.293-303
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    • 2018
  • Monitoring is the act of collecting and analyzing accurate engineering information using various methods and instruments. The purposes of the monitoring are design verification, construction management, quality control, safety management, and diagnose of structure etc.. The diagnose evaluation of the geotechnical structures corresponds to the confirmation of the structural performance. It is aimed to judge the soundness of geotechnical structures considering the degree of damage due to the environmental change and elapsed time. Recently, microseismicity, which is widely known in Korea, can be used for safety management and diagnoses of structure as it detects the micro-damage without disturbance of the structure. This report provides guideline on the procedure for assessing an underground oil storage cavern using microseismic monitoring techniques. Guidelines cover the selection of monitoring systems, sensor array, sensor installation and operation of systems, and interpretation.

Three-Dimensional Dynamic Analysis of Underground Openings Subjected to Explosive Loadings (폭발하중에 대한 지하공동구조체의 3차원 공적 유한요소해석)

  • 김선훈;김진웅;김광진
    • Computational Structural Engineering
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    • v.10 no.2
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    • pp.171-178
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    • 1997
  • Three-dimensional dynamic analyses of underground openings subjected to explosive loadings are carried out. Dynamic analyses consist of two steps; one-dimensional source calculation and three-dimensional tunnel analysis. One-dimensional source calculation includes explosive charge and the free field surrounding rock. The input pressure time history for three-dimensional tunnel analysis is obtained from the companion one-dimensional source calculation. The computer program MPDAP-3D incorporated this analysis capability. It is shown that the computer program is a useful tool for the analysis of the structural safety evaluation of underground openings during construction by drill and blasting method.

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Analysis of support loads in large underground space for high-density arrangement of complex plant (복합플랜트 고집적 배치를 위한 지하대공간 지지하중 해석)

  • Kim, Sewon;Park, Jun Kyung;Lee, Sangjun;Kim, YoungSeok
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.23 no.2
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    • pp.77-92
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    • 2021
  • For the construction of a large underground space with a complex plant installed, it is necessary to analyze the stability considering the ground conditions and various load conditions. In this paper, finite element analysis was performed to analyze the support load that can be used in the design of a large underground space for high-density arrangement of complex plant. An analysis of underground continuous wall (D-wall) was performed considering the load and horizontal earth pressure in the large underground space. In addition, foundation ground analysis was carried out according to the load condition of the complex plant. In order to shorten the construction period, increase the space layout utilization, and secure the stability of the plant structure when installing the complex plant underground, the pipe rack module structure analysis was conducted. This study proposes a design and construction method for the optimal arrangement of underground complex plants using the analysis results.