深埋大断面巷道底鼓影响因素及治理技术研究  

Research on the Influencing Factors and Treatment Techniques of Bottom Bulging in Deep Buried Large Section Tunnels

作　　者：赵丹 ZHAO Dan

机构地区：[1]山西高平科兴申家庄煤业有限公司,山西晋城048400

出　　处：《中国矿山工程》2024年第5期84-87,共4页China Mine Engineering

摘　　要：为研究深埋大断面巷道底鼓的影响因素及针对性的综合治理措施,以260303轨道巷为工程背景,对其深埋大断面巷道底鼓影响因素进行深入的理论分析,进一步对分析结果提出了综合性的治理措施。结果表明:260303轨道巷发生底鼓的主要原因是地质应力环境复杂、巷道围岩自身条件差、岩石水化作业明显、原有支护形式不合理等多因素叠加,导致巷道出现多次频发的底鼓现象,进一步地针对影响因素提出了改变原有巷道形状-打卸压孔-长锚索交错短锚杆联合支护-底部可摩擦滑动的全封闭式钢支架支护的综合性治理措施,通过现场监测底板变形量由48 mm减小为15 mm,满足矿山生产需求,大大减小返修、维修工程,能够保障矿山进行安全高效生产。In order to study the influencing factors of deep buried large section roadway floor heave and targeted comprehensive treatment measures,taking the 260303 track roadway as the engineering background,this paper conducts in-depth theoretical analysis of the influencing factors of deep buried large section roadway floor heave,and further proposes comprehensive treatment measures based on the analysis results.The results showed that the main reasons for the occurrence of floor bulges in track roadway 260303 were the complex geological stress environment,poor surrounding rock conditions,obvious rock hydration operations,and unreasonable original support forms,which resulted in multiple frequent occurrences of floor bulges in the roadway.Further comprehensive measures were proposed to change the shape of the original roadway,drill pressure relief holes,alternate long anchor cables and short anchor rods for joint support,and fully enclosed steel support with frictional sliding at the bottom.Through on-site monitoring,the deformation of the floor was reduced from 48 mm to 15mm,meeting the production needs of the mine,greatly reducing repair and maintenance projects,and ensuring safe and efficient production of the mine.

关 键 词：深埋巷道 大断面 底鼓 

分 类 号：TD325[矿业工程—矿井建设]