小峪矿402盘区2208巷围岩支护技术实践

Practice on Surrounding Rock Support at 2208 Roadway of 402 Panel in Xiaoyu Colliery

2208巷掘进时受上覆19#煤层采空区及煤柱影响,巷道围岩控制相对困难;为确保巷掘进安全,同时为8208综放工作面回采创造良好条件,拟采用工程类比法对在采空区下、煤柱下掘进的2208巷围岩控制方案进行专门设计;现场实践表明,顶底板、巷帮变形量分别只有31 mm、27 mm,围岩控制效果良好。

Aiming at the difficult surrounding rock control influenced by goaf of overlying No.19 coal seam and coal pillar in driving 2208 roadway,the author proposes the surrounding rock control scheme through engineering analogy method to designing at 8208 fully-mechanized working face,whose field practice shows that the surrounding rock is effectively controlled with deformation of 31 mm and 27 mm respectively in roof and floor and the roadway sides.