离散元法是七十年代初发展起来的一种分析节理岩石的数值计算方法。这种方法以分立的块体为出发点,允许块体有大的位移,甚至可以脱离母体而自由下落。离散元法的基本原理是牛顿运动定律,结合不同的本构关系,用动力松弛法按时步进行迭代求解。本文是用离散元法研究崩落法放矿问题的初步报告,仅考虑平面问题,用计算机进行模拟,所得结果结合AutoCAD由屏幕显示和绘图机、打印机画出图形。离散元法对倾斜壁条件下放矿模拟结果表明,它不但可以就放矿的几何形态进行模拟,而且还能对放矿的运动和力的传递关系进行研究,适用于各种边界条件下的放矿问题,后者是离散元法用于放矿研究的最大优点。 Discrete element method is developed in the early seventies, a method of analyzing the numerical calculation of rock joints. This method takes discrete blocks as the starting point, allowing the block to have a large displacement, even free to fall off the matrix. Discrete element method is the basic principle of Newton’s law of motion, combined with different constitutive relations, using dynamic relaxation method iterative solution in time step. This article is based on the discrete element method to study the caving mining caving problem. Only the plane problem is considered and simulated by computer. The result is combined with AutoCAD to draw the picture by screen display, plotter and printer. Discrete element method of inclined-wall conditions, the results of the ore-draining shows that it not only can simulate the geometry of the ore-draining, but also can study the relationship between the movement and the force of the ore-draining. It is suitable for all kinds of boundary conditions Mine problem, which is the biggest advantage of discrete element method for ore study.