深井粉砂岩巷道全断面返修支护技术研究  

Research on Whole Section Support of Repaired Roadway in Deep Siltstone

作　　者：严斌 叶飞 马海涛 YAN Bin;YE Fei;MA Haitao(Shaanxi Binchang Xiaozhuang Mining Co.,Ltd.,Xianyang 713500,China)

机构地区：[1]陕西彬长小庄矿业有限公司,陕西咸阳713500

出　　处：《煤炭技术》2022年第3期58-62,共5页Coal Technology

摘　　要：以深井粉砂岩巷道围岩大变形为研究对象,通过研究深部巷道围岩变形破坏机理,分析围岩破坏特征和变形规律,并结合现场实际,提出了采用"O"形全断面支护(锚网索+环U型钢)控制围岩变形的方法。现场工程试验表明,采用"O"形全断面支护方法后,最大两帮移近量为147 mm,巷道最大顶底板移近量为190 mm,与原锚网索支护方法相比,分别减小了53%及88.7%,说明该方法能有效控制深井巷道围岩大变形。By taking the large deformation of roadway in deep siltstone as the research object.Based on site actual conditions put forward an O-shape support scheme for control the deformation of surrounding rock,by using deformation failure mechanism research and the deformation law and failure characteristics analysis of deep roadway. The result of field test shows that the maximal horizontal displacement is 147 mm and the maximal convergence between roof and floor is 190 mm,when the deep roadway was supported by the O-shape scheme.Comparing the deformation of the O-shape support scheme with the original support method,the deformation decreased respectively 53% and 88.7%, thus it can be seen that the deformation of deep roadway was effective controlled by the O-shape support scheme.

关 键 词：变形破坏机理 “O”形支护 深井巷道 

分 类 号：TD353[矿业工程—矿井建设]