摘要
基于脆性煤体介质的破坏机理,分析和探讨了爆炸应力波在煤层中的传播规律及其对煤体的破坏特性,得出了考虑冲击波作用下煤体破坏范围的计算公式。通过与现场工程计算方法对比,结果表明该公式能准确反映应力波对煤体的破坏范围,计算结果具有更高的可靠性。
Based upon brittle coal medium breakage mechanism,regularities of blasting stress wave propagation in coal seam and its destructive characteristics on coal body are analyzed and studied.A calculation formula to calculate coal body cracking range is obtained which takes into account the functions of shock waves on coal seam.Compared with calculating method used on site,this formula distinctly expresses the destroy processes of stress wave in coal seam,and the result is much more credible.
出处
《中国煤炭》
北大核心
2010年第3期52-55,共4页
China Coal
关键词
预裂爆破
破坏机理
应力波
参数设计
pre-splitting blasting
breakage mechanism
stress wave
parameter design
