摘要
为安全高效回收煤柱资源,以中兴煤业3207保护层工作面地质条件为背景,采用现场试验方法,确定了沿空留巷高水充填方案,对充填体大小、充填系统以及流程进行了设计,同时制定了3207运输巷支护设计方案,采用锚杆+锚索+W钢带+单体柱棚联合支护技术保证留巷稳定性。根据留巷内矿压监测结果,顶底板移近量最大为86 mm,变形以底鼓为主,巷帮变形量最大为58 mm,围岩变形均在可控范围内。
In order to safely and efficiently recover coal pillar resources,taking the geological conditions of the 3207 protective layer working face of Zhongxing Coal Industry as the background,and using on-site testing methods,the author determines the high water filling scheme for gob-side entry retaining,designs the size of the filling body,filling system and process,and develops the support design scheme for the 3207 transportation roadway,which uses the combined support technology of anchor rod,anchor cable,W steel belt and single column shed to ensure the stability of the retaining roadway.According to the monitoring results of the mine pressure inside the retaining roadway,the maximum displacement of the roof and floor is 86 mm,and the deformation is mainly caused by the floor heave,the maximum deformation of the laneway’s side is 58 mm,and the deformation of the surrounding rock is within a controllable range.
作者
刘建红
Liu Jianhong(Dianping Colliery,Shanxi Coking Coal Huozhou Coal and Power Group Co.,Ltd.,Lvliang,Shanxi 033100)
出处
《江西煤炭科技》
2024年第3期83-85,共3页
Jiangxi Coal Science & Technology
关键词
薄煤层
沿空留巷
高水充填
支护设计
thin coal seam
gob-side entry retaining
filling by high water content material
support design
