• 采用井下仰斜钻孔端堵观测技术对白庄煤矿综放开采条件下,覆破坏规律进行了实测,得出断裂带的发育高度

    Adopting survey technology of double-head water-stopped machine flowing high of upward-inclined drillhole rock destruction rules were surveyed, development height of water conducted zone was gained.

    youdao

  • 采用井下仰斜钻孔端堵观测技术对白庄煤矿综放开采条件下,覆破坏规律进行了实测,得出断裂带的发育高度

    Adopting survey technology of double-head water-stopped machine flowing high of upward-inclined drillhole rock destruction rules were surveyed, development height of water conducted zone was gained.

    youdao

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