高应力巷道回采期间锚索注联合支护技术研究

Research on Anchor Grouting Combined Supporting Technique in High Stress Roadway during Mining

沿空掘进巷道因为小煤柱围岩结构稳定性较差,煤层强度低,裂隙发育,且处于邻近工作面采空区塌陷影响范围之内,所以采动矿压显现明显,围岩变形严重,巷道维护困难。提出了采用桁架锚固后喷注浆加固的锚索注联合支护方案,通过3239综采工作面风巷回采期间工程实践验证,该技术应用效果较好。

Due to poor stability of the surrounding rock structure of the small coal pillar,low strength of the coal seam,and developed crack within the influence range of the collapse of the goaf near the working face,the mining pressure of gob-side entry driving is obvious,the surrounding rock is seriously deformed,and roadway maintenance is difficult.The article puts forward anchor grouting combined supporting scheme of truss anchoring and grouting reinforcement,which has verified by engineering practice of the mining of 3239 fully mechanized mining face and has a good application effect.