摘要
针对复采区掘进巷道支护困难等问题,采用现场调研、理论分析、物理试验、数值模拟及工程应用相结合的研究方法,对掘进巷道的合理支护技术进行研究,提出工字钢棚与膏体充填联合支护技术,并通过数值模拟确定,当膏体材料配比为水泥∶粉煤灰∶矸石=2∶5∶5时,巷道能够保持稳定,现场监测表明,巷道掘进60d后,围岩变形稳定,变形量不再增加,围岩变形量与数值模拟结果相近,变形量较小,所设计支护方案能够满足生产需要,可为同类型地质条件矿井提供参考。
Aiming at the support difficulties of roadway excavation in compound mining area,the reasonable support technology of roadway was studied by means of field investigation,theoretical analysis,physical experiment,numerical simulation and engineering application.The combined support technology of工-shaped steel shed and paste filling was put forward.Through numerical simulation,it was determined that when paste material ratio of cement,fly ash and gangue was 2∶5∶5,the roadway could keep stable.Field monitoring showed that after 60 days of roadway excavation,the deformation of surrounding rock was stable,and the amount of deformation would be no longer increasing.The deformation value of surrounding rock was similar to the result of numerical simulation,and the amount of deformation was small.The designed support scheme could meet the production needs,and provided reference for mines with similar geological conditions.
作者
金志远
徐佑林
邓川
许猛堂
JIN Zhiyuan;XU Youlin;DENG Chuan;XU Mengtang(College of Mining Engineering,Guizhou Institute of Technology,Guiyang,Guizhou 550003,China;Guizhou Anhe Mining Technology Engineering Co.,Ltd,Guiyang,Guizhou 550003,China)
出处
《矿业研究与开发》
CAS
北大核心
2019年第1期49-52,共4页
Mining Research and Development
基金
贵州省教育厅青年科技人才成长项目(黔教合KY字[2016]230)
国家安全生产监督管理总局重特大事故防治关键技术研究项目(guizhou-0003-2017AQ)
贵州理工学院高层次人才科研启动基金项目(2003001060)
关键词
复采区
活化巷道
数值模拟
膏体充填
巷道支护
Compound mining area
Activated roadway
Numerical simulation
Paste filling
Roadway support
