适应煤层倾角的不同放煤方式研究
Research on Different Coal Discharge Methods Adapted to Coal Seam Dip Angle
黄立鑫1
作者信息
- 1. 晋能控股煤业集团永定庄煤业公司,山西大同 037003
- 折叠
摘要
我国存在大量的大倾角煤层,这些煤层的倾斜较大,受到的重力及矿压作用不同,因此,采用不同的放煤方式开采倾斜煤层会产生不同效果.为了研究不同倾斜度煤层的开采效果,采用PFC2D仿真分析的形式对不同倾角煤层3种放煤方式的放煤过程进行模拟分析,并统计分析顶煤的放出率.结果表明,当煤层倾角小于35°时,单轮顺序放煤的效果最佳,当煤层倾角大于35°时,双轮顺序放煤的效果最佳.
Abstract
China has a large number of coal mining with high inclination angle.These coal seams have large dip angle and are subject to different gravity and ground pressure.Therefore,using different coal discharge methods to mine inclined coal seam will produce different effects.In order to study the mining effect of coal seams with different dip angles,PFC 2D simulation analysis was used to simulate the coal discharge process of three coal discharge methods in coal seams with different dip angles,and the top coal discharge rate was statistically analyzed.The results show that when the coal seam dip angle is less than 35 °,the effect of single round sequential coal discharge is the best,and when the coal seam dip angle is greater than 35 °,the effect of double round sequential coal discharge is the best.
关键词
大倾角煤层/放煤方式/顶煤放出率/仿真分析Key words
coal seam with high inclination angle/coal discharge method/top coal discharge rate/simulation analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据