Research of the Mining Method of the Broken Orebody on the North Limb of Jiaojia Gold Mine,Shandong Province

According to the geological condition of the broken orebody in the north limb of Jiaojia gold mine and the present situation of the mining production safety,through analyzing the economic benefits and efficiency,with the principle of advanced technique,reasonable economy and reliable safety,we selected the filling into the path of mechanized mining method.The output increased three times,the cost of the ore per ton decrease $1.44.And we re-alized a goal of efficient and safety mining production.