深部大采宽条带开采地表移动的预计

Surface movement predicting problems of deep strip pillar mining

以概率积分法模型为基础,分析了现有条带开采几种计算预计参数的方法及其预计结果,探讨了这些方法用于深部大采宽条带开采预计存在的问题及优缺点.研究结果表明:现有条带开采几种计算预计参数的方法,其预计结果均不能很好地描述深部大采宽条带开采的地表移动和变形规律.提出了全采多工作面叠加预计方法与用文中公式(3)计算预计参数的预计方法相结合的方法,能更准确地进行深部条带开采地表移动和变形预计.

Based on the model of probability integral method, the current calculating methods of predicting perimeters and their predicted results were studied through a typical case. The problems of these methods and their advantages and disadvantages were discussed when they were used to predict surface movement and deformation of deep strip mining. The results demonstrate that the results of all of these methods cannot describe perfectly the surface movement and deformation of deep strip pillar mining. The method combined by equations （ 3 ） in this paper and multi-face predicting method using full extraction parameters was put forward. This method can predict the surface movement and deformation of deep strip pillar mining accurately.