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The choice of the shape of the wellbore section is mainly determined by factors such as the use of the wellbore, the service life, the nature of the rock formation, and the supporting materials. Vertical Shaft sectional shape of a metal mine, mostly using a circular, rectangular and a few small mine. Large and medium-sized mines with service years of more than 15 years use circular sections, various wellbore applications and equipment configurations.
Shafts can be divided into national wells and square wells according to their shapes. According to different purposes, they can be divided into lifting wells and wind wells. According to the different materials of ore lifting or unloading personnel, they can be divided into main wells and auxiliary wells, depending on the lifting equipment used. Can be divided into bucket wells, tank cages and so on.