摘要
针对陕西彬长胡家河矿业有限公司402104工作面回风顺槽掘进时受邻近402103工作面回风巷掘进影响,应力叠加、围岩变形,通过分析原锚网索支护的不足,对支护参数进行了优化,提高锚杆、锚索预紧力,加密锚杆排距,采用锚网索+W型钢带+槽钢联合支护。现场试验表明:顶底板和两帮移近量分别为初期变形量的34.5%和17.6%,支护效果良好。
In view of the influence of the excavation of the return air gateway in the 402104 working face of Shaanxi Binchang Hujiahe Mining Co.,Ltd.,the stress superposition and surrounding rock deformation are caused by the excavation of the return air gateway adjacent to the 402103 working face.Through the analysis of the shortcomings of the original anchor mesh cable support,the support parameters are optimized,the bolt and anchor cable pretension are improved,the bolt row spacing is increased,and the combined support of anchor mesh cable+W-type steel belt+channel steel is adopted.The field test shows that the displacement of roof,floor and two sides is 34.5%and 17.6%of the initial deformation respectively,and the supporting effect is good.
作者
杨涛
杨皓博
Yang Tao;Yang Haobo(Shaanxi Binchang Hujiahe Mining Co.,Ltd.,Shaanxi Changwu 713600;Shaanxi Binchang Xiaozhuang Mining Co.,Ltd.,Shaanxi Binzhou 713500)
出处
《山东煤炭科技》
2021年第7期18-19,22,共3页
Shandong Coal Science and Technology
关键词
扰动
顺槽
支护
优化
disturbance
channel
support
optimization
作者简介
杨涛(1993—),男,陕西合阳人,本科,现任陕西彬长胡家河矿业有限公司掘进六队主管技术员。
