摘要
在对工作面各种通风方式分析研究的基础上指出 :两进一回Y型通风方式是适合无煤柱开采技术要求的预防和治理工作面上隅角瓦斯积聚最有效的通风方式 ;要提高其通风和治理瓦斯的能力 ,进而提高工作面单产量 ,则必须提高其沿空回风巷瓦斯允许浓度或风速。
Based upon analysis and study of various ventilation manner of coal face, the paper points out that Y model ventilation manner of two air entering way and one air return way is best efficient ventilation manner adapting to mining request without coal pillar, controlling and fathering and preventing gas of corner of coal face; that if its abilities of ventilation and controlling gas would be increased, moreover single yield of coal face is increased, the permission concentration of its air return way along the stope or wind speed must be increased. The paper also gives relevant air flux calculating formulas.
