摘要
双鸭山矿业集团公司东荣二矿先后在两个回采工作面进行了毫秒爆破的推广试验,取得了良好的效果,放炮时间缩短近1倍,提高了煤炭回收率。
The popularization and experiment of the millisecond blast were in progress early and late in the two mining face in Dongrong No. 2 Coal Mine. The good effect was obtained. The blasting time was shortened as much as one time. The coal recovery rate was increased.
出处
《煤炭技术》
CAS
2006年第7期42-44,共3页
Coal Technology
关键词
毫秒爆破
煤炭回收率
顶板管理
millisecond blast
coal recovery rate
roof management
