摘要
为了充分提高煤炭资源回收率,保证沿空留巷围岩稳定性。文章以2106孤岛工作面沿空掘巷小煤柱护巷及围岩控制为背景,采用FLAC数值模拟、现场实测等方法,确定了2106工作面轨道巷留设8 m小煤柱护巷技术,并针对开采技术条件提出了合理的支护方案,经现场实测,采用8 m小煤柱以及与之相适应的支护方案后,巷道围岩变形量控制在较小范围,支护系统能充分发挥作用,完全能够保障巷道的整体稳定性。
In order to fully improve the recovery rate of coal resources and ensure the stability of surrounding rock of gob-side entry retaining.Based on the gob-side entry protection with small coal pillar and surrounding rock control of 2106 isolated island working face, the technology of 8 m small coal pillar protection in track entry of 2106 working face is determined by FLAC numerical simulation and field measurement, according to the technical conditions of mining, a reasonable supporting scheme is put forward.After field measurement, the deformation of the surrounding rock is controlled in a small range by using 8 m small coal pillar and supporting scheme, the support system can fully play its role, and can fully guarantee the overall stability of the roadway.
作者
陈飞
CHEN Fei(Shanxi Coke Huozhou Coal Power&Longbo Mining Industry Co.,Ltd.,Linfen 042100,China)
出处
《煤》
2023年第2期25-28,共4页
Coal
基金
内蒙古自治区高等学校科学研究资助项目(NJZY21387)。
关键词
孤岛工作面
沿空掘巷
小煤柱
巷道支护
isolated island working face
gob-side entry drining
small coal pillar
roadway support
