采动巷道煤柱分区演化特征及控制技术研究  

Evolution of Area Characteristics of Coal Pillars in Mining Influenced Roadway and Its Control Technology

作　　者：何建宏[1] 龙鑫 韩连昌 HE Jianhong;LONG Xin;HAN Lianchang

机构地区：[1]贵州盘江精煤股份有限公司金佳矿,贵州六盘水553000

出　　处：《中国矿山工程》2025年第1期20-24,43,共6页China Mine Engineering

摘　　要：本文以某公司110303工作面回风巷道为研究对象,针对采动巷道帮部变形量大、变形持续时间长的问题,采用现场调研、理论分析和数值模拟相结合的方法分析工作面回采对巷道保护煤柱稳定性的影响规律。以巷道保护煤柱水平应力和垂直应力为研究对象,进行巷道煤柱应力分区,提出巷道煤柱应力分区判据,并对各分区特征进行描述。根据巷道帮部围岩变形规律受邻近工作面回采影响的特征,分析采动巷道煤柱分区演化特征。研究结果表明,非稳定区向破碎区演化,稳定区向非稳定区演化时采动巷道帮部破坏的根源。提出将锚杆、索锚固段安置于煤柱深部稳定区的控制方案,针对性控制采动巷道大变形的问题,为类似工程条件提供理论和实践基础。This paper took the 110303 return airway of a certain company as the research object and researched the influence law of working face mining on the stability of roadway surrounding rock.Firstly,the paper investigated the problem of large deformation and long duration of deformation of the roadway gang.Then the horizontal and vertical stresses of the roadway protection coal pillar were taken as the research object,the coal pillar stress division of the roadway was carried out,the stress criterion of the coal pillar stress of the roadway was proposed,and the characteristics of each section are described.According to the characteristics of the surrounding rock deformation of the roadway gangs affected by the mining of adjacent working faces,the evolution characteristics of the coal pillars in the mining roadway were analyzed,and the unsteady zone evolves to the fracture zone,and the mining zone gangs are destroyed when the stability zone evolves to the unsteady zone.The control scheme of anchoring anchor and cable anchoring section and deep stability zone of coal pillar was proposed,and the problem of large deformation of mining roadway was controlled in a targeted manner,which provides theoretical and practical basis for similar engineering conditions.

关 键 词：采动巷道 煤柱 分区演化 加强支护 

分 类 号：TD353[矿业工程—矿井建设]