云南冶金2026，Vol.55Issue(2)：42-47,6.
采动条件下双巷掘进煤柱留设宽度数值模拟与优化研究
Numerical Simulation and Optimization Study on Coal Pillar Width Setting for Double-roadway Tunneling Under Mining Conditions
摘要
Abstract
Aiming at the problem of reasonable coal pillar retention for doubleroadway tunneling at the 12108 working face of Lijiahao Coal Mine,a numerical simulation and optimization study on coal pillar width under mining conditions was carried out.The results show that the theoretical calculation indicates that the coal pillar width for roadway protection in doubleroadway tunneling should be greater than 9.41 m.According to FLAC3D numerical simulation,under primary mining,the plastic failure zone of the coal pillar between the two roadways corresponds to the vertical stress distribution.When a stress reduction zone with a"doublehump"shape appears,the plastic zone gradually changes from a through region to a nonthrough region,and the failure of the coal wall is weakened.For the 12109 air return roadway,the vertical stress on the coal pillar side changes from a single peak to double peaks with an increase in coal pillar width,and the peak value first increases and then decreases.Under secondary mining,the abutment pressure on the coal pillar side of the 12109 air return roadway shows no obvious change in stress peak with increasing coal pillar width,and the position where the peak is reached changes little,but the stress still evolves from a single peak to double peaks.Combining theoretical analysis and numerical simulation results,the reasonable coal pillar width under such conditions is determined to be 10 m.After adopting bolt(cable)support,the deformation of the mining-affected roof is significantly reduced,and the surrounding rock deformation is effectively controlled,meeting the requirements for safe production.关键词
双巷掘进/煤柱宽度/FLAC3D/支承压力/围岩控制Key words
double-roadway tunneling/coal pillar width/FLAC3D/abutment pressure/surrounding rock control分类
矿业与冶金引用本文复制引用
田锐,吴山西..采动条件下双巷掘进煤柱留设宽度数值模拟与优化研究[J].云南冶金,2026,55(2):42-47,6.基金项目
云南省基础研究计划(202501CF070049) （202501CF070049）
