大断面回采巷道锚网索支护技术优化  

Optimization of Bolt-mesh-cable Supporting Technology for Large-scale Mining Roadway in Ganhe Colliery

作　　者：陈晓宁 Chen Xiaoning(Shanxi Huobao Ganhe Coal Mine Co.,Ltd.,Linfen,Shanxi 041600)

机构地区：[1]山西霍宝干河煤矿有限公司,山西临汾041600

出　　处：《江西煤炭科技》2020年第2期34-36,共3页Jiangxi Coal Science & Technology

摘　　要：干河煤矿102工作面1021运输巷掘进时受下部106工作面采动影响,围岩变形严重。通过分析巷道原锚网(梁)与锚索联合支护不足之处,对支护方式进行了优化,提高锚杆、锚索预紧力,取消钢筋托梁,采用单体锚杆配套W钢护板,优选锚固剂,简化施工工艺。现场试验表明,不仅掘进速度大幅提高,回采期间很好地控制了巷道变形,大幅减少维修量,支护效果良好。In view of the serious deformation of the surrounding rock of the 1201 transportation roadway in Ganhe Colliery,the paper analyzes the shortcomings of the original support mode of the roadway,optimizes the support parameters,cancels the steel joist,adopts the W steel plate,and greatly improves the pre tightening force of the anchor cable.The field test shows that not only the driving speed is greatly increased,but also the maintenance amount of the tunnel is greatly reduced.

关 键 词：大断面回采巷道 采动影响 围岩变形 支护方式优化 

分 类 号：TD353.6[矿业工程—矿井建设]