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在煤炭井下生产中,合理选择放煤步距,对于降低产品含矸率,提升煤炭资源采出率具有十分重要的作用。这是因为,在实践生产过程中,如果放煤步距过大,顶煤极有可能串入采空区,造成丢煤现象;而发唱歌放煤步距太小的话,则容易使矸石混入,不仅对煤质有较大影响,还可能诱导操作者错误认为煤已放尽,出现因操作原因而形成的丢煤现象。因此,探讨放煤步距的合理选择具有一定的现实意义。
In the coal mine production, a reasonable choice of coal walking step, for reducing product rock refuse rate and improve the recovery rate of coal resources has a very important role. This is because, in the practice of production, if the coal step is too large, the top coal is likely to string into the goaf, resulting in the phenomenon of coal lumping; and singing songs put coal step is too small, it is easy to make the gangue mixed , Not only has a greater impact on the quality of coal, but also may induce the operator to mistakenly believe that coal has been exhausted, resulting in operation due to the phenomenon of coal lumping. Therefore, it is of practical significance to explore the reasonable choice of the coal laying step.