煤炭与化工2024，Vol.47Issue(8)：21-26,6.DOI:10.19286/j.cnki.cci.2024.08.005
钱营孜煤矿W3233工作面过跳采段切顶卸压及围岩控制技术研究
Research on cutting top to relief pressure and surrounding rock control technology passing jump mining section of No.W3233 Face in Qianyingzi Mine
刘石 1况开明 1黄姝羽 2孙荣言2
作者信息
- 1. 安徽恒源煤电股份有限公司钱营孜煤矿,安徽宿州 234001
- 2. 中国矿业大学(北京)能源与矿业学院,北京 100083
- 折叠
摘要
Abstract
In the face of large faults,the working face needs to jump mining to ensure the mining efficiency.The roadway in the jump mining area is affected by the roof pressure,which is easy to produce roof fall,rib spalling and other failure forms.In order to solve the problem of roadway support in the jump mining section of No.W3233 Face in Qianyingzi Mine,combined with the field engineering conditions,through the theoretical analysis of the roof pressure situation,combined with similar engineering experience,a reasonable pre-splitting blasting roof cutting scheme was proposed for the coal exploration roadway in the jump mining area and the W3233 air roadway retaining part,and a set of reasonable blasting parameters were studied and analyzed.At the same time,the roadway was strengthened and supported.Through theoretical analysis and FLAC3D finite element analysis software simulation,the prestress field generated by the bolt-cable system under the design support scheme was analyzed.The results showed that a continuous effective high stress zone could be formed near the roadway,which played a reinforcing role in the surrounding rock mass.Combined with the pre-splitting blasting roof cutting scheme,the ideal support effect was achieved.关键词
跳采/切顶卸压/爆破参数/巷道围岩控制/数值模拟/预应力分析Key words
jump mining/cutting top to relief pressure/blasting parameters/roadway surrounding rock control/numerical simulation/prestress analysis分类
矿业与冶金引用本文复制引用
刘石,况开明,黄姝羽,孙荣言..钱营孜煤矿W3233工作面过跳采段切顶卸压及围岩控制技术研究[J].煤炭与化工,2024,47(8):21-26,6.
