摘要
针对顾桥矿深部进风井井筒揭8煤、7-2煤,8煤层埋深955.49~958.34 m,7-2煤在8煤下方6.5 m,属深部井筒。双煤层瓦斯含量与瓦斯压力均超出指标,为保障井筒揭煤安全,提出采用深孔预裂爆破增透技术。取得了良好的增透效果,消除了煤与瓦斯突出危险。
For deep ventilation shaft of Guqiao Coal Mine uncover No. 8 coal seam and No. 7-2coal seam. The No.8 coal seam buried depth 955.49~958.34 m. No.7-2coal seam beneath No.8 coal seam6.5m, belong to the deep shaft.Double coal seam gas content and gas pressure were exceed indicators.In order to ensure the security of the shaft uncovering coal, deep hole pre-splitting blasting anti-reflection technology in presented in this paper. Through the anti-reflection, good anti-reflection effect is obtained, the danger of coal and gas outburst in eliminated.
出处
《煤炭技术》
CAS
北大核心
2014年第6期16-18,共3页
Coal Technology
基金
国家自然科学基金项目(51074006)
安徽省高等学校省级自然科学基金项目(KJ2013A102)
关键词
深部井筒
双煤层
井筒揭煤
深孔预裂爆破
增透
deep shaft
double coal seam
seam opening in mine shaft
deep-hole pre-splitting blasting
permeability improvement
