陕西煤炭2026，Vol.45Issue(7)：67-72,6.DOI:10.20120/j.cnki.issn.1671-749x.2026.0711
近距离煤层群开采下伏巷道破坏特征与控制技术
Failure characteristics and control technology of underlying roadways in close-distance coal seam group mining
任鸽鹏 1王华瑞 1李明杰 1杨飞 1杨朋朋1
作者信息
- 1. 陕西彬长大佛寺矿业有限公司,陕西 咸阳 713500
- 折叠
摘要
Abstract
In view of the occurrence characteristics of different interlayer spacings in close-distance coal seams,the surrounding rock of roadways underlying the goaf is significantly affected by different roof thicknesses and surrounding rock stresses.A single support parameter for the roadway can hardly meet the deformation and stress requirements of the surrounding rock.Taking the different interlayer spacings between the 40203 haulage roadway and the goaf of the 41205 working face in Dafosi Coal Mine as the research background,this paper uses theoretical analysis,numerical simulation and field measurement to study the failure characteristics of the 40203 haulage roadway roof under different interlayer spacings.The results show that,based on the analysis of the floor failure depth of the coal pillar in the close-distance goaf,the maximum floor failure depth at the edge of the goaf is 13.1 m.Through numerical simulation of the deformation and failure laws of the roadway surrounding rock under different interlayer spacings,it is found that when the interlayer spacing of close-distance coal seams is less than 13 m,the failure depth on both sides of the roadway roof exceeds 4 m,and the plastic zone on the roof and sidewalls of the roadway connects with the goaf.The roadway support parameters were adjusted.Field support results of the 40205 haulage roadway show that the maximum deformation of the roadway roof and sidewalls is 35 mm,verifying the feasibility of the reinforced support scheme under the condition of an interlayer spacing of less than 13 m.关键词
近距离煤层/不同层间距/巷道变形破坏/底板破坏深度/支护技术Key words
close-distance coal seams/different interlayer spacings/roadway deformation and failure/floor failure depth/support technology分类
矿业与冶金引用本文复制引用
任鸽鹏,王华瑞,李明杰,杨飞,杨朋朋..近距离煤层群开采下伏巷道破坏特征与控制技术[J].陕西煤炭,2026,45(7):67-72,6.
