Abstract: Slowly inclined medium thick and thick ore bodies mining has always been a technical problems in the mining industry. The surface of Zhangjiaxialou iron mine is not allowed to collapse and the ore grades is low. According to this situation, the sublevel open stopping method based on ordinary scraper and remote control scraper is proposed. By technical and economic comparison, if the remote control scraper is adopted, some mining engineerings such as sublevel mine roadways and ore loading roadways, the mining-cutting ratio of the remote control scraper is 33.9% of that of ordinary scraper, the cost of tonnage ore is reduced to 13.98 yuan. So the sublevel open stopping method is technically feasible and economically rational.

Key words: Slowly medium thick and thick ore bodies, Remote control Scraper, Mining-cutting ratio, Economic benefits