【摘要】 为进一步研究冲击地压发生的机理,以煤体冲击作为研究对象,以粘滑导致冲击为切入点,运用弹性力学及弹性动力学理论,建立了煤体相对顶底板发生粘滑力学模型,根据此力学模型,研究了煤体粘滑发生的条件,建立了粘滑发生后煤体的动力学方程。合理假定边界条件,采用试探法得到了动力学方程的解析解。应用动力学方程的解析解分析了粘滑发生后弹性区煤体的破坏条件及煤体冲击发生的条件。更多还原

【Abstract】 In order to further study the mechanism of rock burst,took the coal rock burst as study object,and took stick-slip leading to rock burst as entry point,the relative stick-slip of coal to roof and floor mechanical model was established by elasticity and elastodynamics. Based on this mechanical model,the stick-slip condition of coal was studied and stick-slip dynamics equation was established. Properly assuming the boundary conditions,analytic solution of the dynamic equation was obtained by means of heuristics. According to the analytic solution of dynamic equation,the destruction of elastic area coal and the occurring conditions of coal burst were analyzed.更多还原