分布式实时监测测力锚杆的开发与应用  

Development and application of distributed real-time monitoring force measuring bolt

作　　者：侯俊领 吕晓雪 李垂宇 胡冰 HOU Jun-ling;LYU Xiao-xue;LI Chui-yu;HU Bing(Vanadium and Titanium Institute,Panzhihua University,Panzhihua 617000,China;State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Science and Technology,Huainan 232000,China;School of Civil Architecture,Anhui University of Science and Technology,Huainan 232000,China;Huainan Mining(Group)Co.,Ltd.,Huainan 232000,China)

机构地区：[1]攀枝花学院钒钛学院,四川攀枝花617000 [2]安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232000 [3]安徽理工大学土木建筑学院,安徽淮南232000 [4]淮河能源(集团)股份有限责任公司,安徽淮南232000

出　　处：《煤炭工程》2022年第12期121-127,共7页Coal Engineering

基　　金：四川省重点研发项目(2020YFS0512);国家重点实验室开放基金资助项目(SKLMRDPC19KF03)

摘　　要：针对顶板事故频发的煤矿生产安全背景,进行测力锚杆原理的分析,构建分布式实时监测测力锚杆系统,包括分布式测力锚杆、实时采集分站、智能网关和动态智能预警平台等,可动态实时监测锚杆轴力、弯矩等工况信息,当锚杆轴力超过安全阀值时,系统会准确发出安全预警。给出分布式测力锚杆工作原理、制备工艺和标定方法。分布式实时监测测力锚杆在淮南顾桥矿1126(1)轨道运输巷和山西汾西高阳煤矿21105工作面运输巷成功应用,依据监测成果分析了锚杆轴力、弯矩演化规律,预测了轴力与采场周期来压的响应关系,揭示了该巷道采动期间锚杆的工况响应规律,在测力区段划分出“非超前支承应力区、采动影响区、剧烈影响区”。为类似条件矿井进行巷道锚杆支护设计优化时提供参考和借鉴。In view of the coal mine production safety background of frequent roof accidents,the principle of force-measuring bolt is analyzed,and a distributed real-time monitoring force-measuring bolt system is constructed,including distributed force-measuring bolt,real-time acquisition substation,intelligent gateway and dynamic intelligent early warning platform.The working conditions such as axial force and bending moment of the bolt can be dynamically monitored in real-time.When the axial force of the bolt exceeds the safety threshold,the system will accurately issue safety warning.The working principle,preparation process and calibration method of distributed force measuring bolt are given.The distributed real-time monitoring force-measuring bolt was successfully applied in the transportation roadway of 21105 working face in 1126(1)rail entry in Guqiao Coal Mine,Huainan,and Gaoyang Coal Mine,Fenxi,Shanxi.Based on the monitoring results,the evolution laws of axial force and bending moment of the bolt were analyzed,the response relationship between axial force and periodic weighting of the stope was predicted,and the working condition response law of the bolt during the mining of the roadway was revealed.In the force-measuring section,the in-situ stress zone,mining influence zone,and severe influence zone were divided,which provided data support and guarantee for the bolt support design optimization and roof safety of the roadway.

关 键 词：测力锚杆 锚杆支护 传感器 监测预警 

分 类 号：TD353.6[矿业工程—矿井建设]