摘要
利用离散元软件UDEC2D模拟研究了极软煤层综放面的煤壁稳定性,通过2.0m、2.2m、2.5m、2.8m、3.2m五种割煤高度模拟结果得出极软煤综放极限采高;在极限采高下,研究了1∶1、1∶2、1∶3三种不同采放比的上覆岩层宏观运移规律。模拟得出的结论对指导现场生产实践具有重要的意义。
The paper mainly studies the working coal face stability of longwall top-coal caving in the soft coal seam by the distinct element numerical simulation software UDEC2D. The coal-cutting height is divided into five cases: 1.8m,2.0m, 2.2m, 2.5m, 2.8m and 3.2m. The results show that the limit coal-cutting height is 2.2m in the soft coal seam. Under this height, the movement behaviours of the overlying rock stratra for the different coal thickness are studied. The research conclusions are important to the practical mine production.
出处
《矿山压力与顶板管理》
北大核心
2005年第2期1-3,共3页
Ground Pressure and Strata Control
基金
教育部优秀青年教师教学科研奖励计划资助项目
