摘要
为提高千秋煤矿2#煤层注水防冲效果,对煤样进行浸水软化试验以确定煤层超前注水的最佳时间,并对煤样浸水前后的冲击性能进行分析。实验结果表明,煤样浸水周期为14 d时软化效果最佳,且煤样冲击能量指数比浸水前明显减小。
In order to enhance the impact resistance effect of No.2 coal seam after water injection in Qianqiu Coal Mine,the coal samples were wetted and softened.The premium time for water injection was determined and the impact resistances of coal samples were tested before and after wetting.The results indicated that the coal sample showed the premium softening effect after wetting for 14 days,and its impact energy index was decreased obviously.
出处
《中国煤炭》
北大核心
2011年第7期98-101,共4页
China Coal
基金
国家自然科学基金项目(51074065)
河南理工大学青年基金资助项目(Q2009-10)
关键词
煤层注水
浸水软化
冲击地压
冲击能量指数
water injection into coal seam
wetting and softening
rock burst
impact energy index
