【摘要】 通过对回采面利用局扇进行辅助通风，改善回采面通风条件，增加供风量，减少进回风巷之间漏风，实现回采面安全高产。更多还原

【Abstract】 The use of auxiliary fans for local ventilation of working face can improve the ventilation conditions of the face, increase the quantity of air supply and reduce air leakage between intake and return air ways, and thus realize the safety and high productivity of the working face.更多还原