摘要
东峰煤矿在回采工作面应用顶板预裂爆破技术,既减小了工作面回采过程中对相邻巷道的动压影响,又避免了工作面初次来压时,因大面积悬顶的一次性垮落,造成上隅角及回风流中瓦斯超限报警事故。
The use of the roof pre-split blasting technology in the working face of Dongfeng Coal Mine, not only reduces the influence on the adjacent roadway in the process of mining, and avoids the gas overrun accident alarm in the corner and return air flow, because of the hanging roof area is too large during first roof pressure.
出处
《山东煤炭科技》
2015年第12期6-7,共2页
Shandong Coal Science and Technology
关键词
预裂爆破
爆破方案
工作面
pre-splitting blasting
blasting scheme
working face
