近壁面采用壁面函数法来处理。
本文在力学模型的基础上，利用弹性理论的位移函数法导出了长壁采煤法采空区上方岩层及地表移动的函数表达式，同时给出了岩层及地表最大移动值的计算公式。
Based on the model of mechanics, some functional formulae of strata and surface movement above longwall mining goaf are derived by using the displacement method of theory of elasticity.
数值离散时，将时间与空间分开进行处理，空间上的离散采用有限体积法，而时间上的离散则用三阶龙格-库塔法，对固壁边界的处理使用了“壁函数”法。
The finite volume approach in space, the three order Runge Kutta method in time and a "law of the wall" for the solid wall condition were used.
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