黑龙江科技大学学报2025，Vol.35Issue(5)：738-746,9.DOI:10.3969/j.issn.2095-7262.2025.05.008
深部煤层切顶留巷巷道围岩破坏特征及控制技术
Surrounding rock failure characteristics and control technology of roof-cutting roadway in deep coal seam
摘要
Abstract
This paper aims to ensure the stability of the surrounding rock of deep roadways along the gob-side roadway retention.Taking the roof cutting roadway of C2105 working face in mine as the engi-neering background,the study involves exploring the stress changes and key parameters of roadway sur-rounding rock before and after roof cutting and pressure relief in deep roadway with high stress by using numerical simulation and on-site measurement methods,and giving the corresponding control scheme and practising support simulation.The results show that after the roof-cutting by blasting,the cutting seam structure blocks the stress transfer pat,with the stress concentration position shifting to the depth of the coal slope,and the stress peak value decreases,thus weakening the deformation of the roadway roof,floor and the surrounding rock.Along with the cutting angle of 15°and the height of 10 m,the peak stress of the solid coal slope is smaller and the concentration area is far away from the solid coal side,showing the subsidence of roof and floor within a controllable range.After the reinforcement support for the road-way surrounding rock deformation,the displacement of roadway roof and floor is reduced by 120 mm,which effectively improves the stability of retained roadway.关键词
深部开采/沿空留巷/围岩破坏/巷道支护Key words
deep mining/gob-side roadway retention/surrounding rock failure/roadway support分类
矿业与冶金引用本文复制引用
张永彬,沈斌..深部煤层切顶留巷巷道围岩破坏特征及控制技术[J].黑龙江科技大学学报,2025,35(5):738-746,9.基金项目
黑龙江省"百千万工程"科技重大专项项目(2020ZX04A01) （2020ZX04A01）
