深部大变形巷道“锚杆+短锚索+长锚索”支护机理与实践  

Mechanism and Practice of"Anchor Rod+Short Anchor Cable+Long Anchor Cable"Support in Deep Deformation Roadway

作　　者：张巨川 苑龙峰 李广峰 张金彪 孔德闯 师皓宇[2] ZHANG Juchuan;YUAN Longfeng;LI Guangfeng;ZHANG Jinbiao;KONG Dechuang;SHI Haoyu(Tangshan Mining Branch Company,Kailuan(Group)Limited Liability Corporation,Tangshan 063012,China;College of Safety Engineering,North China Institute of Science and Technology,Beijing 101601,China)

机构地区：[1]开滦(集团)有限责任公司唐山矿业分公司,河北唐山063012 [2]华北科技学院矿山安全学院,北京101601

出　　处：《煤炭技术》2024年第10期87-91,共5页Coal Technology

摘　　要：唐山矿0293工作面回采巷道存在变形大、难支护等问题,理论分析表明:处于高偏应力环境的巷道围岩易于产生较大的变形,理论分析和现场实测表明,巷道围岩局部区域的塑性区破坏深度达到3.8 m左右,巷道表面位移量达400 mm左右,基于此,设计了针对围岩的“塑性区内+塑性区外+稳定岩层”的“锚杆+短锚索+长锚索”三重支护方案:即选用2.4 m锚杆、4.5 m短锚索与10.5 m长锚索协同支护,实现软岩巷道的安全稳定。The mining roadway in the 0293 working face of Tangshan mine has problems such as large deformation and dfficulty in support.Analyze the characteristics of rock damage and deformation in the roadway surrounding rock,and finds that the roadway surrounding rock in a high deviatoric stress environment is more prone to large roadway displacement.Theoretical analysis and on-site measurement show that the plastic zone damage depth in the local area of the roadway surrounding rock reaches about 3.8 m,and the surface displacement of the roadway reaches about 400 mm,based on this,a triple support scheme of"anchor rod and short anchor cable and long anchor cable"was designed for the surrounding rock,which includes"plastic zone inside and plastic zone outside and stable rock layer".That is,2.4 m anchor rod,4.5 m short anchor cable,and 10.5 m long anchor cable were used for collaborative support to achieve safety and stability of soft rock roadway.

关 键 词：大变形巷道 高应力 锚杆支护 蝶形塑性区 协调控制 

分 类 号：TD353[矿业工程—矿井建设]