Abstract: Aiming at the current situation of serious root bed production in the middle and deep hole blasting of Jiugang Xigou Mine,In order to achieve a good blasting effect,Through a brief analysis of the causes of deephole blasting in Jiugang Xigou Mine,combined with similar model tests,Proposed measures such as reasonable deep boreholes,increasing the diameter of the front row holes and filling the bottom of the boreholes with heavy ammonium fried drugs.Through field test verification,the results show that after the above measures are taken,the occurrence of blasting roots is effectively controlled,the blasting quality is significantly improved,the ore shovel efficiency is increased,the mine blasting cost is reduced,and the normal and safe production of the mine is effectively guaranteed.

Key words: Limestone mine,Deep hole blasting,Foundation,Governance