• 同时,实施网索耦合支护深部回采巷道能够满足巷道掘进工作面回采期间稳定性控制要求

    The gateway with bolt-net-anchor coupling support can meet the requirements of the stability control during gateway excavation and coal extraction.

    youdao

  • 随着我国煤矿开采越来越趋向深部,煤矿问题便越来越突出特别是煤层回采巷道围岩控制问题。

    Along with the mines toward deep level in China, the problems of soft rock are becoming more and more outstanding, especially controlling surrounding rock of three-soft coal seam.

    youdao

  • 现场实践表明采用底板支承压力进行深部松动爆破有效控制回采巷道底鼓,满足生产需要

    Field practice shows that the method of making loose blasting deeply in the area of the mining abutment pressure can control the entry floor heave effectively and meet the need of the production.

    youdao

  • 现场实践表明采用底板支承压力进行深部松动爆破有效控制回采巷道底鼓,满足生产需要

    Field practice shows that the method of making loose blasting deeply in the area of the mining abutment pressure can control the entry floor heave effectively and meet the need of the production.

    youdao

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