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焦家金矿位于沂述断裂带东侧,黄县弧形断层的下盘。主要矿体有1~#、2~#及3~#矿体,均处于黄县断裂带上,且走向与断裂带走向基本一致,平均倾角为40°～60°,分别位于黄铁绢英岩质碎裂岩、绢英岩化花岗岩及硅化花岗岩内。采用尾矿充填法回采。由于本区工程地质条件比较恶劣,采场冒落事故时有发生,1980年投产以来,已回采的144个采场约有4/5发生不同程度的片帮冒顶,严重威胁井下工作人员的生命安全及
Jiaojia gold deposit is located in the eastern side of Yishu fault zone, Huang County arc fault under the plate. The main orebodies are 1 ~ #, 2 ~ # and 3 ~ # orebodies, which are all located in the Huangxian fault zone and strike toward the same direction as the fault zone. The average dip angle is between 40 ° and 60 °, Cataclasite, sericite granitic granite and silicified granite. Mining tailings filling method. Since the engineering geological conditions in this area are relatively poor, stope accidents have occurred frequently. Since it was put into operation in 1980, about 4/5 of the 144 stopes that have been reclaimed have suffered varying degrees of slagging and roof collapse, which seriously threaten the lives of underground workers Safety and