Devdopment of mining mothod presnent mining mothod at Yixingzai Gold Mine were compared and anaylzed in detail.Based on condition of ore mass and minable high,the improving methods were put forward.

　
英 美
  • 對義興寨金礦采礦方法的演變及現行采礦方法作了詳細的分析與比較,并根據目前礦山礦體賦存條件、開(kāi)采深度等實(shí)際情況,提出了切實(shí)可行的改進(jìn)方案。
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目錄 附錄 查詞歷史
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