黑龙江科技大学学报2026，Vol.36Issue(5)：712-717,729,7.DOI:10.3969/j.issn.2095-7262.2026.05.002
平岗煤矿断层保护煤柱应力演化规律及尺寸优化
Stress evolution and size optimization of fault-protected coal pillar in Pinggang Coal Mine
摘要
Abstract
This paper aims to further investigate the stress evolution law of the fault in Pinggang Coal Mine,and determine the reasonable size of the fault-protected coal pillar.The study analyzes the interac-tion among the fault,coal seam,and surrounding rock during the mining process at the working face,and conducts a comparative study with a numerical simulation method on vertical stress and vertical displace-ment of the coal pillars under four different width conditions of 20,18,15,and 13 m.The results indi-cate that after the formation of the fault,both the horizontal principal stress perpendicular to the fault strike and the shear stress on the fault plane show an increasing trend compared to those before the fault formation.The stability and bearing capacity of the coal pillar are directly related to its vertical stress and vertical displacement,and the reasonable retained width of the coal pillar should be no less than 14.61 m.Based on comprehensive theoretical analysis and simulation results,it is finally determined that the width of the fault-protected coal pillar in Pinggang Coal Mine can be optimized to 15 m.The study results pro-vide a scientific basis for the retention and size optimization of fault coal pillars in Pinggang Coal Mine.关键词
断层/保护煤柱/应力演化/尺寸优化/围岩稳定性Key words
fault/protecting coal pillars/stress evolution/size optimization/surrounding rock stability分类
矿业与冶金引用本文复制引用
秦涛,杨睿,邱照辉,赵圣雷..平岗煤矿断层保护煤柱应力演化规律及尺寸优化[J].黑龙江科技大学学报,2026,36(5):712-717,729,7.基金项目
黑龙江省省属高等学校基本科研业务费项目(2023-KYYWF-0546) （2023-KYYWF-0546）
