论文部分内容阅读
近几年发生了一些因使用刨削式和切割式采煤机、工作面运输机和巷道掘进机而引起的瓦斯燃烧事件。幸而没有造成人员和物质损失。已经确认,这些事故的增加是由于近来使用了局部断面掘进机的缘故。 其原因可列举如下: 煤巷掘进从钻眼爆破工作转向使用局部断面掘进机。随着局部断面掘进机使用数量的增加,由使用这种机器而引起可能燃烧的机会也就增加。
In recent years there have been some cases of gas combustion caused by the use of planing and shearer mines, face conveyors and roadheaders. Fortunately, no personal and material losses were caused. It has been confirmed that the increase of these accidents is due to the recent use of partial section heading machines. The reasons may be cited as follows: Coal Roadway heading from blasting blasting work to the use of local section boring machine. As the number of tunnel boring machines used in local sections increases, the chance of possible combustion resulting from the use of such machines also increases.