矸石变形非线性及其对岩层移动的影响

The nonlinear features of waste deformation and its impaction on strata movement

采用数值模拟方法研究了矸石充填体变形非线性特征对岩层移动的影响,比较了双屈服模型和弹性模型在开采沉陷动、静态规律以及覆岩破坏等方面模拟结果的差异.研究结果表明:在达到充分采动后,采用弹性模型和双屈服模型模拟地表沉陷基本一致;在非充分采动模拟过程中,采用弹性模型和双屈服模型在模拟地表移动与变形极值、下沉速度、移动盆地特征等方面均存在较大的差异.

The nonlinear features of waste deformation and its impaction on strata movement was analyzed by numerical simulation. Differences of simulation results of double-yield model and elasticity model in surface movement, static laws and destroy of the strata subsidence were mainly compared. The results of the simulations that were made by elasticity model and double-yield models show that, the rules of surface subsidence are basically same under the condition of critical extraction, but when in sub-critical extraction there are larger differences in surface movement, extreme deformation, subsidence speed, the features of movement basin.