掘进巷道分区特征多参量联合监测与防冲实践  

Multi Parameter Joint Monitoring and Anti Erosion Practice for Zoning Characteristics of Excavation Roadway

作　　者：陈国华 Chen Guohua(Wushenqi Mengda Mining Co.,Ltd.,Ordos 017307,China)

机构地区：[1]乌审旗蒙大矿业有限责任公司,内蒙古鄂尔多斯017307

出　　处：《煤矿机械》2024年第4期52-56,共5页Coal Mine Machinery

基　　金：国家重点研发计划项目(2022YFC3004604);国家自然科学面上基金(52374076)。

摘　　要：根据掘进巷道冲击地压分区理论,研究了迎头滞后区域不同分区(塑性圈动态演化区与塑性圈稳定区)的冲击特征。提出了监测分区特征的多参量联合监测方案,并以纳林河二号矿井31120沿空掘进巷道为工程背景,展开现场实测。联合监测结果表明,31120工作面沿空掘进巷道迎头后方0~150 m,巷道围岩结构处于破裂调整状态,将此范围划分为塑性圈动态演化区;迎头后方150 m范围外,围岩结构趋于稳定,将此范围划分为塑性圈稳定区。进一步,选取与掘进关联性高的塑性圈动态演化区内的地音数据,对31120沿空掘进工作面合理推进速度展开分析。分析结果表明,31120工作面沿空巷道掘进期间掘进最大进尺不应超过15 m/d。研究成果可指导掘进巷道冲击地压监测及防控。Based on the theory of rock burst zoning in excavation roadway,the impact characteristics of different zones(plastic circle dynamic evolution zone and plastic circle stability zone)in the forward lag zone were studied.A multi-parameter joint monitoring scheme for monitoring zoning features was proposed,and on-site measurements were carried out using the engineering background of the 31120 goaf excavation roadway in the Nalinhe No.2 mine.The joint monitoring results indicate that within the range of 0-150 m behind the heading of the goaf excavation roadway in the 31120 working face,the surrounding rock structure of the roadway is in a state of fracture adjustment,and this range is divided into a dynamic evolution zone of the plastic circle.The surrounding rock structure tends to stabilize within a range of 150 m from the front and rear,and this range is divided into a plastic circle stability zone.Furthermore,the ground sound data from the dynamic evolution zone of the plastic circle with high correlation with excavation were selected to analyze the reasonable advancing speed of the 31120 goaf excavation working face.The analysis results indicate that the maximum daily excavation footage during the excavation of the goaf roadway in the 31120 working face should not exceed 15m/d.The research results can guide the monitoring and prevention of rock burst in excavation roadway.

关 键 词：掘进工作面 冲击地压 多参量监测 地音监测 掘进速度 

分 类 号：TD324[矿业工程—矿井建设]