Research and Application of Shaft Digging Construction Technology under Complex Ground Stress Conditions

A dry drilling technology using umbrella drilling and special auger rods was designed for the Shizhu South air intake vertical shaft in the West Shaft Area of the Temple River Mine, and combined with the deep-hole loose blasting technology, which effectively reduces the impact of blasting on the surrounding rocks of the shaft wall.the construction of vertical well borehole construction under complex ground stress conditions has been completed using this technology, Completion rate is 78m per month. This technology not only improves the economic and social benefits, but also provides theoretical support for the construction of shafts under complex geostress conditions and promotes the development of related technologies.