According to the study of the working face with a strong probability of rock burst, the EME can be used to forecast the rock burst and to check the effect of unloading blasting in coal mine.
对具有强冲击危险工作面进行的研究表明,电磁辐射完全可以预测煤矿冲击矿压危险,检验卸压爆破效果,而且准确率高,效果明显。
This paper briefly analyzed the common running fault of coal mining transformer. It also provides the methods that how to check the faults and how to solve the problem.
文章浅析煤矿主变压器常见的故障,日常故障巡查方法,以及如何排除故障。
Already during the 13th century, domestic coal consumption in London is said to have been so great that restrictive by-law became necessary to check the increasing smoke nuisance.
早在13世纪,据说在伦敦家庭煤的消耗就很大,所以必须制订限制性的地方法规来检测不断增加的烟雾污染。
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