In the mining area of Dragon Head Mine, the faulted structure is extremely well-developed with a crisscross of faults, thus resulting in a certain ore loss and dilution in mining operation.
龙首矿矿区内断裂构造极其发育，断层纵横交错，因而在采矿作业中，存在着一定的矿石损失和贫化。
2
Finally a calculating method for air supply in mining area by dilution equation was proposed.