采矿与岩层控制工程学报2025，Vol.7Issue(3)：33-46,14.DOI:10.13532/j.jmsce.cn10-1638/td.2024-1342
巷道底板锚索扩孔注浆锚固机理及参数研究
Research on mechanism and parameters of reaming anchorage for grouted anchor cable in roadway floor
摘要
Abstract
For design of reaming parameters of grouted anchor cables borehole in coal mine roadway of weak floor,the influence of reaming parameters,such as reaming diameter,length,number of segments and spacing,on the anchoring performance was investigated by conducting theoretical analysis,numerical simulation and laboratory tests,and the optimal reaming parameters for floor anchor cables borehole was ultimately determinated.The results show that the anchorage force of floor reamed anchor cables is positively correlated with both reaming diameter and segment length.The growth rate of anchorage force initially accelerates and then gradually slows down with the increase of reaming diameter,while it exhibits an almost linear increase with the segment length.Multi-segment reaming outperforms single-segment reaming,but beyond three segments,the improvement becomes negligible.The anchoring force of floor reamed anchor cables increases first and then decreases with the increase of reaming spacing,achieving the peak at 50 mm in space.By orthogonal simulations and pull-out test validation,the optimal reaming parameters were determined as a reaming diameter of 90 mm,a segment length of 100 mm,two reaming segments,and a spacing of 50 mm.The research results can advance the application of reamed anchorage technology in floor strata control of coal mine roadway.关键词
底板锚索/黏结失效/锚固性能/扩孔参数Key words
floor anchoring cable/bond failure/anchorage performance/reaming anchorage parameters分类
矿山工程引用本文复制引用
刘少伟,张润泽,侯建军,姚丙傲,付孟雄,贺德印..巷道底板锚索扩孔注浆锚固机理及参数研究[J].采矿与岩层控制工程学报,2025,7(3):33-46,14.基金项目
国家自然科学基金资助项目(52074102) （52074102）
中原科技创新领军人才资助项目(244200510013) （244200510013）
河南省高校科技创新团队支持计划资助项目(23IRTSTHN007) （23IRTSTHN007）
河南省高等学校重点科研项目计划资助项目(25A440006) （25A440006）
