大倾角煤层分段走向密集采煤法

A Sublevel-Strike-Prop Wall Coal Mining Method of High Dip Coal Seams

文章介绍了一种大倾角煤层在伪俯斜工作面内沿走向布置密集支柱的新采煤方法。

The paperproposes a new sublevel-strike-prop wall coalmining method used for high dip seams. Thefeatures of this method are that the prop wall arelocated along strike in false inclined face, and theface is divided into several parts along the dip. Thefunction is of intercepting waste from goaf, so thata waste pack is formed in working area to supportroof. As a result, it may be to improve theunderground behaviour of the working area in highdip seams, to reduce the strength of periodicalweighting and successfully to solve the problems of large square pending roof, high pressure,unstability of support, waste flushing frequentlyand choking face in the upper stope of high dipworking face. Author also introduces a reasonablemeans to select the porameters of the coal miningmethod, such as slanting angle and the direction ofslanting; the impact pressure and static pressurebearing on the strike prop wall, the spacing alongdip and the distance between props, etc.. Theeconomic efficeint and more safety have beenobtained by use of this methed since it has beentested in mines.