山东煤炭科技2024，Vol.42Issue(2)：59-62,4.DOI:10.3969/j.issn.1005-2801.2024.02.013
运输顺槽深孔爆破断顶卸压护巷技术研究
Research on the Technology of Deep Hole Blasting Roof Breaking Pressure Relief and Roadway Protection in Transportation Grooves
张杰 1李开贤 1陈勇1
作者信息
- 1. 兖矿能源集团股份有限公司济宁二号煤矿,山东 济宁 272000
- 折叠
摘要
Abstract
In view of the problems of large deformation and difficult maintenance of the roadway surrounding rock of the 93lower11-2 transportation groove in Jining No.2 Coal Mine under the influence of mining,combined with the technology principle and theoretical calculation of deep hole blasting roof cutting pressure relief,the roof cutting height of 45 m,roof cutting angle of 75°,and drilling layout mode are determined.The on-site industrial tests show that after deep hole blasting roof breaking pressure relief,the deformation of the roof and floor of the roadway is about 80.5 mm,and the displacement amount of the two sides is about 71.8 mm.The deformation of the roadway surrounding rock is significantly reduced,and good results are achieved.关键词
采动/煤巷/爆破/卸压Key words
mining/coal roadway/blasting/pressure relief分类
矿业与冶金引用本文复制引用
张杰,李开贤,陈勇..运输顺槽深孔爆破断顶卸压护巷技术研究[J].山东煤炭科技,2024,42(2):59-62,4.
