Study On The Roof Bedding Separation And Anchoring Effect Of Extremely Thick Coal Seam Large Section Roadway

Whole coal main roadway's span is broad, and its surrounding rock is made up of coal body whose physical characteristics is relax and cracked and lower strength, and in a complex state,the magnitude of deformation and yielded range are large. For the limited in the theory, big section whole coal roadway's mechanism of deformation and destroying and the control is not known clearly. The law of Surrounding rock's stability which under affection of mining-induced consider or study less, especially exist weak plane in the rock stratum in roof bedding. So it is important to study the deformation law of big section whole coal roadway and analyse the corresponding anchored effection, while study result displayed by now the characteristics and structure of the bedding roof are main factor which affect the designing and effect of anchoring, roof bedding separation is the essence character and the direct reason which caused roof bedding destroyed, so it first need to analyse the roof bedding separation cause of formation and mechanism and influence factors, and grasp the law of coal roadway roof bedding separation under different influence factors well and truly.The treatise's study contents and results as the followings:...