摘要
坚硬厚煤层(f>2.5)综放开采的关键问题是顶煤破碎和垮落困难,顶煤预先弱化技术是解决这一问题的有效方法。本文根据红会一矿现场试验和观测,分析了综放工作面坚硬顶煤预先爆破的弱化作用机理和规律。
The key question of hard thick seam for fully mechanized mining with top coal caving is broken and the top coal caving difficulties, pre - weak- ening of top coal is an effective way to solve this problem. The text is trying to analysis of the mechanism and laws. of pre - blasting weakening on the top coal caving face through the tests and observation about Coal Mine No. 1 of Honghui.
出处
《山东煤炭科技》
2011年第4期151-152,共2页
Shandong Coal Science and Technology
