主井矿区是夏甸金石广的一个独立矿井,其上部开采是用斜井与盲竖井及盲斜井三级联合开采的,具有较完善的通风系统。由于深部矿源的变化,2007年在主井矿区新建了一个2 000 t/d 主竖井工程项目,工程分两段进行,分别在-368 m 与-693 m处各开拓一个独头平巷掘进巷道,以迎接竖井工程进度。这两项工程需2 a 的时间才能完成,目前-368 m The main shaft mine area is an independent mine in Jidian Jinshi Guang. The upper part of the mine is mined using a combination of inclined shaft, blind shaft and blind shaft, and has a well-developed ventilation system. Due to the change of deep mine sources, a 2 000 t / d main shaft project was newly built in the main shaft mine in 2007 and the project was carried out in two stages. A single-head laneway was opened at -368 m and -693 m respectively , In order to meet the shaft project progress. These two projects take 2 a time to complete, currently -368 m