厚煤层错层位巷道布置工作面老顶断裂形式研究

摘要

The broken form of the main roof above the coal miming face would relate to the support pressure distribution of the coal mining face, would influence the fracturing effect of the top coal and the broken location would have different influences to the mine roof pressure behaviors of the coal mining face. With the analysis on the mechanics features of the main roof broken form by the top coal caving in the conventional gateway layout, in combination with the layout features of the mining gateway for the dislocated level coal mining face, a mechanics calculation analysis was conducted on the main roof broken form and the broken form of the main roof was obtained when the dislocated level gateway was laid out to provide the mechanics theoretical basis to the rational selection of the dislocated level mining gateway layout and the support features of the coal mining face.%工作面采场上方老顶的断裂形式关系到工作面支承压力的分布,进而影响顶煤的压裂效果,并且断裂位置对工作面矿压显现有不同程度的影响.通过分析传统巷道布置放项煤老顶断裂形式的力学特性,结合错层位采煤方法工作面回采巷道布置特点,对老顶断裂形式进行力学计算分析,得出了采用错层位巷道布置时老顶的断裂形式,为选择合理的错层位回采巷道位置以及工作面支护特点提供了力学理论依据.