摘要
煤矿主提升系统存在制动响应延迟慢(>1.2 s)、速度控制精度低(±0.5 m/s)及保护系统误报率高(2.1次/kh)3大安全隐患。为解决多参数动态耦合检测难题,提出基于应用检测技术、检测分析、计算机技术对矿井提升机进行多参数检测系统,构建速度—制动力—闸盘分析模型,利用集成CTD26W测试仪(采样率10 kHz)与分布式无线蓝牙传感器的动态监测系统进行检验。实验表明,系统实现制动力矩在线校准误差1.8%(传统方法4.5%),制动故障识别率98.7%(F1-score=0.92),过卷保护定位精度±12 mm(标准允许±50 mm),速度控制稳定性提升3.2倍(标准差0.04 m/s),该方法突破现有单维度检测技术局限,为千米深井提升系统提供毫秒级安全预警解决方案。通过对当前煤矿主提升系统安全检测检验现状的深入分析,结合矿井提升安全风险的评估与预防,提出了一套科学、系统的安全检测检验方法。研究成果可降低矿井提升事故率42%以上(国家矿山安全监察局数据,2023年),对保障深部开采安全及智能化矿山建设具有重要工程意义。
There are three potential safety hazards in the main hoist system of coal mine:slow bmking response delay(>1.2 s),low speed control accuracy(±0.5 m/s)and high false alarm rate of protection system(2.1 times/kh).In order to solve the problem of multi-parameter dynamic coupling detection,a multi-parameter detection system for mine hoists based on application detection technol-ogy,detection analysis and computer technology was proposed.The analysis model of speed-braking force-brake disc was constructed.The dynamic monitoring system was integrated with CTD26W tester(sampling rate 10 kHz)and distributed wireless bluetooth sensor.The experiment shows that the system achieves an online calibration error of 1.8%for braking torque(traditional method 4.5%),a brake fault recognition mate of 98.7%(F1-score=0.92),an over roll protection positioning accuracy of±12 mm(standard allowable±50 mm),and a speed control stability improvement of 3.2 times(standard deviation 0.04 m/s).This method breaks through the limitations of the existing single-dimensional detection technology and provides a millisecond-level safety early warning solution for the kilometer-deep well hoisting system.Through the in-depth analysis of the current status of the safety detection and inspection of the main hoist-ing system in coal mines,combined with the evaluation and prevention of safety risks in mine hoisting,a set of scientific and systematic safety detection and inspection was proposed.The research results can increase the accident rate of mines by more than 42%(data from the State Mine Safety Supervision Bureau,2023),which is of great engineering significance for ensuring the safety of deep mining and the construction of intelligent mines.
作者
魏金玉
王衡
贾吉林
Wei Jinyu;Wang Heng;Jia Jilin(Henan Coal Science Research Institute Co.,Ltd.,Zhengzhou 450001,China;Henan Coal Research Institute Testing Technology Co.,Ltd.,Zhengzhou 450001,China)
出处
《能源与环保》
2025年第11期333-338,347,共7页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
煤矿主提升系统
多参数动态监测
制动力矩测试装置
深井提升系统
main hoisting system of coal mine
multi-parameter dynamic monitoring
braking torque testing device
deep well hoisting system
