Abstract: The designed mining method of Zhangzhuang Iron Mine is backfilling after blasting with large diameter and deep drilling holes.In order to maximize the performance of mining equipments,reduce the amount of drifting,and improve the mining efficiency,the height of the mining level has been raised from the original 60m to 90m through a series of technical breakthroughs.As the initial compensation space and the free surface of blasting mining ,blasting cutting raise construction technology is the key factors influencing the high level of stope blasting mining effect,the construction quality directly decide if the chamber blasting mining production can run smoothly,and the secondary processing when fail in the construction cost much and at the same time will bring potential safety hazard.Zhangzhuang Iron Mine face the circumstances of less reliable experience for reference,had to take the contrast test with limited resouces.The method of safe,low cost and practicable determines the final plan,which laid a foundation for Zhangzhuang Iron Mine to be safe with stable production,at the same time,research results can provide reference to some large underground mines.

Key words: shighlevel, chamber cutting raise,antiwell driller,artificial raising method of shafting