Systematic researches on the supporting design for the breaking cavern in No. 3 MiningDistrict 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。
2
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 miningdistrict.
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。
3
Some measurements for the rational match for miningdistrictdesign and mine ventilation and for safe production are proposed.