xishimen 中文意思是什麼
xishimen
解釋
西石門-
Application of caving mining technology with bottom under condition of flat dipping mid - thick body and unstable rock caused the most of trench and bottom drift, located in abutment, to be destroyed and low recovery in south area, xishimen iron mine
摘要在緩傾斜中厚礦體底板巖性不穩固的條件下，採用有底柱崩落法，由於電耙道大多處于空區邊部應力集中的部位，致使塹溝及底部結構巷道破壞嚴重而使回收率極低，採用無底柱崩落卸壓則可有效解決上述難題。 -
Evaluation of ventilation system in xishimen iron mine and study on its transformation scheme
西石門鐵礦通風系統可靠性評價及改造方案研究 -
The directional breaking blasting technology for underground development used in xishimen iron mine is described. a comprehensive summary is made of it which includes the test technology, the blasting parameters and the on - site application effect so as to provide precious experiences for other mines
論述了西石門鐵礦井下掘進定向斷裂爆破技術，對其試驗工藝、爆破參數、現場應用效果等方面進行了全面總結，為其它礦山井下掘進提供了寶貴經驗。
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