• Title/Summary/Keyword: Abandoned

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Analysis of Photovoltaic Potential of Unused Space to Utilize Abandoned Stone Quarry (폐채석장 부지 활용을 위한 유휴 공간의 태양광 발전 잠재량 분석)

  • Kim, Hanjin;Ku, Jiyoon;Park, Hyeong-Dong
    • Tunnel and Underground Space
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    • v.31 no.6
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    • pp.534-548
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    • 2021

  • In this paper, the feasibility of generating solar power near an abandoned quarry is examined with the objectives of resolving the essential problems that quarries encounter, such as rockfalls and space usage issues. On an abandoned quarry site in Sadang, Seoul, Republic of Korea, two different PV installation methods were analyzed. The first is attaching PV directly on the quarry slope. Since there are no corresponding safety standards and precedents for installing solar panels directly on slopes, the power generation potential was calculated by using topographic data and reasonable assumptions. The surface area of cut slope section was extracted from the Digital Elevation Model(DEM) via ArcGIS and Python programming to calculate the tilt and power capacity of installable panels. The other approach is installing PV as a rockfall barrier, and the power generation potential was analyzed with the assumption that the panel is installed in the direction of facing solar irradiation. For the derivation of power generation, the renewable energy generation analysis program SAM(System Advisor Model) was used for both methods. According to the result, quarries that have terminated resource extraction and remain devastated have the potential to be transformed into renewable energy generation sites.

  • https://doi.org/10.7474/TUS.2021.31.6.534 인용 PDF KSCI

Evaluation of Traffic Vibration Effect for Utilization of Abandoned Mine Openings (휴·폐광산 채굴 공동 활용을 위한 교통 진동 영향 평가)

  • Hyeon-Woo Lee;Seung-Joong Lee;Sung-Oong Choi
    • Tunnel and Underground Space
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    • v.33 no.2
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    • pp.95-107
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    • 2023

  • In this study, the effect of repeated traffic vibration on the long-term stability of mine openings is analyzed for re-utilization of abandoned mine galleries. The research mine in this study is an underground limestone mine which is developed by room-and-pillar mining method, and a dynamic numerical analysis is performed assuming that the research mine will be utilized as a logistics warehouse. The actual traffic vibration generated by the mining vehicles is measured directly, and its waveform is used as input data for dynamic numerical analysis, As a results of dynamic numerical analysis, after 20,000 repetitions of traffic vibration, the mine openings is analyzed to be stable, but an increase in the maximum principal stress and an additional area of plastic zone are observed in the analysis section. As shown in the changes of displacement, volumetric strain, and maximum principal stress which are measured at the mine opening walls. It is confirmed that if the repeated traffic vibration is continuously applied, the instability of the mine openings can be increased. Authors expect that the results of this study can be used as a reference for basic study on utilization of abandoned mine.

  • https://doi.org/10.7474/TUS.2023.33.2.095 인용 PDF