王家岭18111回风顺槽二次补强支护参数研究  

Parameters of Secondary Reinforcement Support of No.18111 Return Airway in Wangjialing Mine

作　　者：姜青林 JIANG Qinglin(Wangjialing CoalIndustry Co.,Ltd.,Shanxi Jinneng Holding Group,Baode 036600,China)

机构地区：[1]山西晋能控股集团有限公司王家岭煤业有限公司,山西保德036600

出　　处：《山西煤炭》2025年第1期18-25,共8页Shanxi Coal

摘　　要：以王家岭煤矿18111工作面回风顺槽受两次工作面回采动压影响,巷道严重变形为工程背景,基于室内岩石力学实验,通过现场调研、理论分析和数值模拟相结合的研究方法,对两次动压影响下18111回风顺槽补强支护参数进行研究。基于现场观测和钻孔窥视结果,分析由于巷道顶板岩层裂隙较发育,原(补强)支护参数也未能提高浅部破碎岩体的力学参数,针对性地提出了底板分级注浆工艺;提高注浆压力至4~5 MPa,优化浆液配比,确保岩体裂隙被浆液充满,达到强化岩体力学参数的目的。在二次动压影响下,巷道顶板及两帮的塑性区深度小于2.0 m,底板塑性区深度只有0.5 m,二次超前动压影响下巷道最大变形量小于300 mm。This study focuses on the return airway of No.18111 working face in Wangjialing Coal Mine,where severe deformation occurred due to dual dynamic pressure influences from working faces.Based on laboratory rock mechanics experiments,a comprehensive research approach combining field investigation,theoretical analysis,and numerical simulation was employed to study reinforcement support parameters for the No.18111 return airway under dual dynamic pressure influences.The results of field observations and borehole peeping revealed that the original(reinforcement)support parameters failed to improve the mechanical parameters of shallow fractured rock mass due to well-developed roof rock fissures.A targeted graded grouting process for the floor was proposed,increasing grouting pressure to 4~5 MPa and optimizing grout ratio to ensure complete filling of rock fissures,enhancing rock mass mechanical parameters.Under secondary mining pressure influence,the plastic zone depth of the roadway roof and both sides remained less than 2.0 m,while the floor plastic zone depth was limited to 0.5 m.The maximum deformation of the roadway under secondary advance dynamic pressure influence was less than 300 mm.

关 键 词：注浆支护 补强支护 数值模拟 二次动压 

分 类 号：TD353[矿业工程—矿井建设]