井倉鉱山における残壁の長期変形計測とその解析 Measurement and Analysis of Long-Term Deformation of a Rock Slope on Ikura Limestone Quarry

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Several characteristics of deformation of a rock slope due to excavation are clarified through a displacement measurement on Ikura limestone quarry for more than ten years. However, some causes of measured deformation have been still unknown. The rock slope behind the Tarumi face showed continuous contraction while the excavation was interrupted at this face. In this study, a cause of the continuous deformation was studied to evaluate stability of the rock slope by means of numerical analysis. Complex topography of the mining area on Ikura limestone quarry was modeled in three dimensions at several excavation stages. Then, an elastic analysis was carried out to estimate the deformation of the rock slope due to excavation in the whole mining area. Through the analysis, it was found that the rock slope could deform elastically while the excavation was interrupted at the Tarumi face. It was estimated to contract gradually due to progressive excavation at the Kawamukai face, which was located at 400m away from the rock slope. Analyzed results were consistent with the observed results under an adequate elastic constant. Therefore, this rock slope was evaluated to be stable because the continuous deformation caused by the excavation was elastic.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 120(4), 182-189, 2004-05-25

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10012934303
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    6967209
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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