深部软岩巷道底鼓机理与治理技术研究  

Research on Mechanism and Treatment Technology of Floor Heave in Deep Soft Rock Tunnels

作　　者：袁长才 YUAN Changcai(Hongsi Coal Industry Co.,Ltd.,Ningxia Baofeng Group)

机构地区：[1]宁夏宝丰集团红四煤业有限公司,宁夏回族自治区银川市750000

出　　处：《现代矿业》2023年第11期223-225,230,共4页Modern Mining

摘　　要：针对某矿8110工作面运输巷底板破坏严重问题,采用数值模拟巷道底板塑性区分布情况,得到塑性破坏范围与工作面距离呈负相关。通过分析该矿底板岩性和结构状态、水理作用及采动应力对巷道底鼓情况的影响,提出底板超挖锚杆加固回填的支护方案。治理后,巷道最大底鼓量仅为58 mm,较治理前降低了80.67%,支护有效提高了底板围岩强度。In response to the serious problem of damage to the bottom plate of the transportation roadway in the 8110 working face of a mine,numerical simulation was used to investigate the distribution of plastic zones in the roadway bottom plate,and it was found that the plastic failure range is negatively correlated with the distance from the working face.By analyzing the rock properties and structural state of the mining floor,the influence of hydraulic action,and mining stress on the floor heave of the roadway,a support plan of bottom plate overbreak,anchor reinforcement,concrete backfrlling is proposed.After treatment,the maximum floor heave of the roadway was only 58 mm,a decrease of 80.67%compared to before treatment,and the support effectively improved the strength of the surrounding rock of the floor.

关 键 词：软岩底鼓 塑性破坏 底板超挖 锚杆加固 混凝土回填 

分 类 号：TD353[矿业工程—矿井建设]