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结合葛泉矿1528工作面运输巷的工程条件,在关键层理论研究成果基础上,通过计算机数值模拟的方法,建立了反映岩层基本特征的力学模型,研究了留巷上方顶板断裂的应力特征、变形特征、破坏特征。采用正交试验法对老顶断裂影响因素进行数值模拟,并对其进行影响分析和排序,从而确定了影响次序。
Combined with the engineering conditions of the transportation lane of Gequan Mine 1528 working face, based on the research results of the key layer theory, a mechanical model reflecting the basic characteristics of the rock strata is established by computer numerical simulation method. The stress characteristics of the roof fracture above the retaining lane are studied, Deformation characteristics, destruction characteristics. Orthogonal test method is used to simulate the influencing factors of the failure of the roof, and the influence analysis and sorting are carried out to determine the influencing order.