Some measurements for the rational match for mining district design and mine ventilation and for safe production are proposed.
就生产矿井的采掘布局与通风工作的合理匹配，以及开采煤炭、保障生产安全方面进行剖析，并提出一些匹配措施。
Systematic researches on the supporting design for the breaking cavern in No. 3 Mining District of Jinchuan are conducted, and some valuable achievements are obtained.
针对金川三矿区破碎硐室进行了较系统的支护设计研究，得到了一些有价值的成果。
This paper introduces the design method for a kind of the explosion-division intelligent electromagnetic starter specially used in the fans of the underground coal mining district.
介绍了一种煤矿井下对旋式风机专用隔爆型电磁启动器的设计方法。
This paper introduces the design method for a kind of the explosion-division intelligent electromagnetic starter specially used in the fans of the underground coal mining district.
介绍了一种煤矿井下对旋式风机专用隔爆型电磁启动器的设计方法。
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