回风大巷漏风成因及治理技术研究

Research on the Causes and Treatment Technology of Air Leakage in Return Airway

针对赵庄煤业回风大巷漏风问题,制定"新掘段破碎巷帮注浆+密闭墙重新构筑"方案,并进行了现场实施。效果考察表明:实施完毕后,闭墙处漏风消失,联络巷闭墙处瓦斯浓度与其他区域基本相当,工作面风量能够满足需求。

In view of the air leakage problem in Zhaozhuang Coal Industry, the scheme of "New excavation section broken roadway side grouting + sealing wall reconstruction" was formulated and implemented on site. The results show that: after the implementation, the air leakage at the closed wall disappears, the gas concentration at the closed wall of the connecting roadway is basically equivalent to that in other areas, and the air volume of the working face can meet the demand.