综采工作面过断层巷道稳定性多参量监测  

Multi-parameter monitoring the stability of rock around roadway while fully mechanized coal face passing through fault

作　　者：姜耀东[1,2] 吕玉凯[2] 赵毅鑫[1,2] 高占学 

机构地区：[1]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083 [2]中国矿业大学(北京)力学与建筑工程学院,北京100083 [3]宁夏宁鲁煤电有限责任公司任家庄矿,宁夏银川750004

出　　处：《煤炭学报》2011年第10期1601-1606,共6页Journal of China Coal Society

基　　金：国家重点基础研究发展规划(973)资助项目(2010CB226801);国家自然科学基金资助项目(50704034);北京市教育委员会共建项目建设计划

摘　　要：以综采工作面前方出现小断层为研究背景,采用锚杆测力计、锚索测力计、多功能测枪、电磁辐射仪、红外测温仪、风速计及湿度计等多参量手段对巷道稳定性进行了监测;通过对巷道围岩的应力、位移、电磁辐射和温度同步监测的同时,实现了对巷道围岩体的宏细观相结合的成功监测。结合数值模拟对断层位置处的应力和内能变化规律进行研究,并对多参量监测结果应用主成分分析方法得出:温度作为内能的直接表现形式,有着和应力、位移相同的发展变化规律;电磁辐射体现着煤岩体内部结构的应力分布规律及微破裂的频次,能在细观上监测巷道围岩体变化;多参量中各参量依照其重要性及敏感性由强到弱依次为巷道变形量、电磁辐射强度值、巷道内部温度、巷道应力;结合电磁辐射、温度、应力和位移的多参量监测方法可以实现对巷道围岩体进行不同的空间尺度、全方位的监测。Taking the small fault as research background,which existence ahead of fully mechanized coal face,the roadway stability were monitored by the means of multi-parameter method.Monitoring equipments include bolt dynamometer,anchor dynamometer,multi-function measured gun,electromagnetic radiation instrument,infrared thermometer,anemometer and hygrometer.Through the synchronous monitoring of stress,displacement,EME and temperature,micro-macro measurement methods of rock around roadway were realized successfully.Combining with the numerical simulation of stress in the fault and internal energy,meanwhile,the principal component analysis for multi-parameters,some conclusions were concluded.As the direct manifestation of internal energy,temperature shows the same variation with stress and displacement.Electromagnetic radiation measurements reflect the law of stress distribution of coal internal structure and micro-fracture frequency.The importance and sensitivity of parameters from strong to weak are displacement,electromagnetic radiation measurements,temperature and stress.Different spatial scales and comprehensive on rock of roadway＇s measurement is realized which need combine with electromagnetic radiation measurements,temperature,stress and displacement monitoring.

关 键 词：综采工作面 断层 多参量监测 主成分分析 宏细观研究 

分 类 号：TD322.4[矿业工程—矿井建设]