基于FLAC3D的高抽巷围岩稳定性数值模拟分析
Numerical simulation analysis of surrounding rock stability of high pumping roadway based on FLAC3D
芦盛亮1
作者信息
- 1. 山西潞安化工集团 余吾煤业有限责任公司,山西 屯留 046100
- 折叠
摘要
为提高高抽巷的稳定性,本文采用数值模拟的手段分析了S1302高抽巷在开挖过程中的支承压力分布规律,采用分段掘进的方法共计掘进了 3次.研究结果表明,高抽巷在开挖过程中,左右两侧的侧向支承压力分布特征并不相同.在靠近实体煤一侧,侧向支承压力随距离增加逐渐缩小.在靠近回风平巷一侧,侧向支承压力随距离增加迅速下降,当超过S1302回风平巷影响范围后,侧向支承压力逐渐增加至原岩应力,然后保持不变.
Abstract
In order to improve the stability of high pumping roadway,the abutment pressure distribution of S1302 high pumping roadway during excavation is analyzed by numerical simulation.the method of subsection driving was used for a total of 3 times.The results show that the distribution characteristics of lateral abutment pressure on the left and right sides of high drainage roadway are different during excavation.On the side near the solid coal,the lateral abutment pressure decreases gradually with the increase of distance.On the side near the return air drift,the lateral abutment pressure decreases rapidly with the increase of distance.When the influence range of S1302 return air drift is exceeded,the lateral abutment pressure gradually increases to the original rock stress and then remains unchanged.
关键词
高抽巷/数值模拟/支承压力/原岩应力Key words
high pumping roadway/numerical simulation/abutment pressure/primary rock stress引用本文复制引用
出版年
2025
NETL
NSTL
万方数据