袖巻充填および側壁軟化法による採炭坑道の維持効果

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書誌事項

タイトル別名
  • The Effects of Face-side Packing and Sidewall Softening on the Maintenance of Gate Roadways
  • ソデマキ ジュウテン オヨビ ソクヘキ ナンカホウ ニ ヨル サイタン コウド

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抄録

The influences of face-side packing and Sidewall softening on the mechanical behaviour of the surrounding rocks and coal seam are investigated using the non-linear finite element analysis method to obtain practical guidelines for the effective measures to maintain gate roadways. The sz-sults of the investigation are summarized as follows.<BR>1) A non-linear finite element analysis is able to provide the optimum design of the packing to corespond with the mechanical properties of roof and floor rocks.<BR>2) It is possible to control the development of failure in the surrounding rocks and enhance the stability of the roadway by selecting the most appropriate conditions of the packing.<BR>3) Sidewall softening by such means as horizontal slot cutting, blasting or boring is effective as analternative method where it is difficult to maintain the roadway by means of packing.<BR>4) The optimum depth of the softened zone is to be at least one to two times asgreat as the width of the roadway.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 103 (1193), 437-442, 1987

    一般社団法人 資源・素材学会

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