【浅埋煤层长壁开采顶板结构及岩层控制研究】黄庆享.pdf
Studyon Roof Stpuctupeand Gpound Contpol inShallowSeamLongwalMining 02362.
ABSTRACT By field observation in four differentshallow seam longwall faces,the ground behavior and the law of roof weighting is revealed.It is found that the intense weighting and roof step are caused by singlekey stratumbreakingandinstability,and theroof has structure effect.