以汤丹铜矿复杂采空区条件下的通风系统为工程背景，介绍了多中段进风和集中回风的机械通风系统及存在的问题；针对通风系统进风段阻力大、进风困难以及采空区未进行有效封闭的状况，开展了压－抽结合二级机站通风系统优化整改，进一步完善了通风系统，收到了很好的通风效果。
The paper takes the ventilation system under complex goaf conditions in Tangdan Copper Mine in Yun -nan as engineering background ,introduces the mechanical ventilation system of multi-stage inlet air and centralized re-turn air and its problems .the high resistance of the downcast section ,the difficulty of inlet air and the ineffective con-finement of goafs facilitate the renovation of press-pump two-stage ventilation system ,which further complete the venti-lation system ,achieving good ventilation effects .
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