xishimen meaning in Chinese

西石门

Evaluation of ventilation system in xishimen iron mine and study on its transformation scheme
西石门铁矿通风系统可靠性评价及改造方案研究
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
论述了西石门铁矿井下掘进定向断裂爆破技术，对其试验工艺、爆破参数、现场应用效果等方面进行了全面总结，为其它矿山井下掘进提供了宝贵经验。
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
摘要在缓倾斜中厚矿体底板岩性不稳固的条件下，采用有底柱崩落法，由于电耙道大多处于空区边部应力集中的部位，致使堑沟及底部结构巷道破坏严重而使回收率极低，采用无底柱崩落卸压则可有效解决上述难题。