用滑移线法确定放顶煤工作面两侧煤壁支承压力分布及其范围

Using Slip Line Method to Determine the Distribution and Range of the Abutment Pressure in the Two Sides of the Rib in the Sublevel Caving Face

本文从弹塑性力学角度出发,运用塑性力学中滑移线场理论,推导出放顶煤工作面两侧煤壁支承压力分布及其范围.结果表明.在靠近采空区的一段区域内,支承压力沿煤壁呈均匀台阶分布。支承压力大小与煤壁支反力以及煤体的性质C、ф有关,而其分布范围则与割煤高度m、放采比1、煤体性质等有关。

The ship line theory belonging to the plastic mechanics is used to determine the distribution and range of the abutment pressure in this paper. The result is ,near the goaf, the distribution appears pedestal sit shape. The value is related to the anti-support of the rib and C、(?),its range to the mining height, l、c、(?).