Combined with mine production, a coal pillar recovery method is introduced, and how to determine recovery form and to rule safety measures are narrated in detail.

结合矿井生产实例，介绍了一种煤柱回采方法，并从合理布置回采方式和制定安全技术措施等方面进行了详细论述。

youdao

Combined with mine production, a coal pillar recovery method is introduced, and how to determine recovery form and to rule safety measures are narrated in detail.

结合矿井生产实例，介绍了一种煤柱回采方法，并从合理布置回采方式和制定安全技术措施等方面进行了详细论述。

youdao