摘要
神东煤炭集团自1999年在大柳塔矿20605综采面运用深孔预裂爆破技术以来,在初次来压前切断顶板、减小来压步距、减小对采场支架和人员安全的威胁等方面做了大量工作,并对施工工艺进行了不断优化,得了良好的效果,但诸如确定炮眼装药系数、炮眼深度、封泥长度,装药过程中如何保护导爆索和雷管等问题仍然值得不断的研究和总结。
Since applying the deep-hole and pre-shear blasting technology at 20605 fully mechanized face of Daliuta mine in 1999,Shendong Coal Mining Group cuts the roof for the first weighting,reduces the weighting intervals and does plenty of job for reducing the threat on the stope support and the security of personnel and optimizes the construction techniques continuously and obtains good effect. But how to confirm the filling coefficient of blast hole,blast hole depth,lute length and how to protect the detonating cord and blasting cap during the process of filling are worth studying and summarizing continuously.
出处
《神华科技》
2009年第5期14-17,共4页
Shenhua Science and Technology
关键词
综采工作面
深孔
强制放顶
Full-mechanized mining face
Deep hole
Forced caving
