城郊煤矿2902工作面瓦斯综合治理技术

Comprehensive Gas Control Technology on 2902 Working Face of Chengjiao Coal Mine

分析了城郊煤矿2902工作面U型通风瓦斯涌出规律,提出了工作面上隅角瓦斯综合治理技术。现场实践证明,采用挡(导)风障、上下隅角封堵充填和强制放顶等措施,有效预防了上隅角瓦斯超限,取得了较好的治理效果;顺层钻孔和高位断裂带钻孔抽放实现了采场围岩瓦斯的分源治理,进一步保障了工作面安全高效生产。

Analyzed gas emission rules of U type ventilation on 2902 working face in Chengjiao Coal Mine, comprehensive gas control technology on upper comer were summarized. Practice shows that, a series of technologies such as block （guide） brattice, sealing and fill- ing wall, forced caving are effective on 2902 working face. Hence, the upper comer gas to limit is effectively prevented. Gas gushing from working face and surrounding rock is controlled separately by gas drainage using bedding boreholes and high-level boreholes in fracture zone, which guarantees safe production of working face.