深部开采松散破碎全煤巷道变形特征及合理支护技术  

Deformation characteristic and reasonable supporting technique of loose and fractured coal roadway in deep mining

作　　者：吴德义[1] 程建新 查亦林 WU De-yi;CHENG Jian-xin;ZHA Yi-lin(National and Local Joint Engineering Laboratory of Building Health Monitoring and Disaster Prevention Technology, Anhui Jianzhu University, Heifei 230022, China;Anhui Key Laboratory of Building Structure and Underground Engineering, Anhui Jianzhu University, Hefei 230022, China;School of Civil Engineering, Anhui Jianzhu University, Hefei 230022, China)

机构地区：[1]安徽建筑大学建筑健康监测及灾害预防技术国家地方联合工程实验室,安徽合肥230022 [2]安徽建筑大学建筑结构与地下工程安徽省重点实验室,安徽合肥230022 [3]安徽建筑大学土木工程学院,安徽合肥230022

出　　处：《煤炭工程》2018年第7期34-37,共4页Coal Engineering

基　　金：国家自然科学基金(51374009;51674005);安徽省自然科学基金(1608085ME105)

摘　　要：以安徽淮南地区新集二矿162302运输巷道的实际工程为例,根据工程实测结果对深部开采松散破碎全煤巷道两帮及顶板的变形特点进行了分析。结果表明:巷道两帮中部呈现为显著的不稳定塑性变形,顶板松散煤体与直接顶结构面中部产生不稳定层间离层。为保证巷道的稳定性,结合已有的数值模拟结果,在原梯形棚巷道两帮中部布置锚杆来控制巷道中部塑性变形,在巷道顶板中部布置预应力锚索保证松散顶煤离层稳定,在松散煤体浅部2.0~2.5m范围内布置导管以保证锚索顺利施工。Based on the engineering practice of 162302 transport roadway in Xinji Coal Mine, the deformation characteristic of roadway sides and roof was analyzed by engineering test. The conclusion were drawn that the unstable plastic deformation was obvious in the middle of roadway sides, and unstable interlayer separation formed in middle of construction surface. The bolts were applied in middle of roadway sides to keep plastic deformation stability and pre-stress anchor cable was applied in middle of roadway roof to keep loose coal interlayer stability, and conduit was layered within 2.0-2. 5m of shallow loose coal to ensure successful installation of anchor cable.

关 键 词：深部开采 全煤巷道 塑性变形 锚杆支护 锚索支护 

分 类 号：TD353[矿业工程—矿井建设]