摘要
上隅角瓦斯超限是放顶煤开采遇到的主要安全问题 ,除采用E型通风方式外 ,在较薄煤层布置专用瓦斯排放巷困难时 ,可以采用顶板纵向钻孔抽排瓦斯。本文通过实验室模拟和现场实践研究 ,进行了钻孔的合理参数和实验效果的分析 。
Methane excessive limit in upper corner angle area is a major problem during roof-coal - caving operation, when it is difficulty to lay out specialized methane discharging roadways in thinner coal seams, besides using E ventilation mode, vertical roof boreholes are used to discharge methane. In this paper, through laboratory simulation and on-the-spot test and study, reasonable parameters of boreholes and experimental effect are analyzed; its conclusion has reference and guide effect on methane prevention and control during roof-coal-caving operation.
出处
《煤矿安全》
CAS
北大核心
2001年第6期17-19,共3页
Safety in Coal Mines
