深部高水平地应力巷道变形机理与控制对策  

Deformation Mechanism and Control Countermeasures of Deep Roadway with High Crustal Stress

作　　者：刘玉祥 武立彬 罗涛 夏传祥 LIU Yuxiang;WU Libin;LUO Tao;XIA Chuanxiang(Shuangyashan Jianlong Mining Co.,Ltd.;College of Resource Engineering,Longyan University;School of Mining Engineering,North China University of Science and Technology)

机构地区：[1]双鸭山市建龙矿业有限公司,黑龙江省哈尔滨市150000 [2]龙岩学院资源工程学院 [3]华北理工大学矿业工程学院

出　　处：《现代矿业》2024年第10期47-52,共6页Modern Mining

摘　　要：为解决深部巷道围岩支护问题,保障深部资源安全开发,针对深部高水平地应力巷道工程的变形破坏特征,采用现场调查与数值分析结合的方法对其破坏机理与控制对策进行了研究。结果表明,受埋深大、地应力高的影响,原支护方案下巷道围岩出现了两帮收缩、顶板下沉、支护体变形破坏与底鼓现象。深部高地应力与采动集中应力的叠加作用加剧了围岩变形与劣化,导致巷道锚喷及锚索支护参数不合理,U型钢支架被动受力,支护结构整体承载力不足。结合现场工程地质条件,提出了高地应力锚网索耦合支护、关键部位锚索耦合支护、钢支架壁后充填耦合支护等组合技术措施,同时优化耦合断面,采用顶、底板水平应力扰动控制技术,实现荷载均匀化,有效地遏制了围岩的变形,提高了巷道围岩整体稳定性。In order to solve the problem of surrounding rock support of deep roadway and ensure the safe development of deep resources,the failure mechanism and control countermeasures of deep roadway engineering with high crustal stress are studied by combining field investigation and numerical analysis.The results show that under the original support scheme,two side shrinkage,roof subsidence,deformation failure and floor heave occur in the surrounding rock of the roadway under the influence of large buried depth and high crustal stress.The superposition effect of deep high crustal stress and mining concentrated stress aggravates the deformation and deterioration of surrounding rock,leading to unreasonable parameters of roadway bolting and shotcrete and cable support,passive force of U-shaped steel support and insufficient overall bearing capacity of supporting structure.Combined with site engineering geological conditions,a combination of technical measures such as high crustal stress anchor mesh coupling support,anchor cable coupling support at key positions,steel support wall backfill coupling support,coupled section optimization and top and bottom horizontal stress disturbance control technology are proposed to achieve load uniformity,which effectively curb the deformation of surrounding rock and improve the overall stability of roadway surrounding rock.

关 键 词：深埋巷道 高水平地应力 破坏机理 控制措施 

分 类 号：TD353[矿业工程—矿井建设]