考虑损伤效应的开拓巷道冲击地压发生机理及防控技术体系  

Mechanism and prevention and control system of rock burst in development roadway considering the damage effect

作　　者：李家卓[1,2] 闫康行 王洪涛 窦林名 马衍坤[4] 宋士康[3] 卢育 徐振忠 黎旭博 LI Jiazhuo;YAN Kangxing;WANG Hongtao;DOU Linming;MA Yankun;SONG Shikang;LU Yu;XU Zhenzhong;LI Xubo(School of Mining Engineering,Anhui University of Science and Technology,Huainan,Anhui 232001,China;School of Mines,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;Shandong Energy Group Xibei Mining Co Ltd,Xi'an,Shaanxi 710018,China;School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan,Anhui 232001,China)

机构地区：[1]安徽理工大学矿业工程学院,安徽淮南232001 [2]中国矿业大学矿业工程学院,江苏徐州221116 [3]山东能源集团西北矿业有限公司,陕西西安710018 [4]安徽理工大学安全科学与工程学院,安徽淮南232001

出　　处：《采矿与安全工程学报》2025年第1期137-146,共10页Journal of Mining & Safety Engineering

基　　金：国家重点研发计划项目(2022YFC3004603);国家自然科学基金区域创新发展联合基金重点项目(U21A20110);山东能源科技计划重大项目(SNKJ2022A15)。

摘　　要：开拓巷道、上下山及其联络巷和巷道内硐室因其服务年限长,长期受到高静载和采掘活动产生的频繁动载影响,常出现远距离采掘引起的冲击地压现象,难以针对性进行防控。以上述巷道为背景,综合采用案例分析、现场监测、实验室试验和理论分析方法,划分诱发开拓巷道冲击地压远-中-近场采掘活动范围,解释远距离采掘活动诱发开拓巷道冲击地压原因,得出考虑损伤效应的开拓巷道冲击地压发生机理及其防控技术体系。研究表明:在工作面采掘活动影响下开拓巷道微震事件频率及震级在增加,根据微震能量密度与开拓巷道和工作面距离定义采动响应指标φ,由采掘活动引起的开拓巷道区域φ值定量阐述煤体损伤与冲击地压危险程度的联系。中-近场采掘活动带来的循环动载使煤体产生不可逆损伤并不断累积,φ值超过冲击临界值,从而中场动载也会成为冲击地压的诱因。结合考虑损伤效应的开拓巷道冲击地压发生机理,提出冲击源头优化-局部精准防控的开拓巷道全生命周期冲击地压防控技术体系。研究结果可为此类开拓巷道冲击地压防控提供理论依据与技术支持。Development roadways,rises,dips,their crosscuts,as well as chambers within roadways are subject to long-term high static loads and frequent mining-induced dynamic loads due to their long service life.As a consequence,they often undergo rock burst disasters caused by long-distance mining,and these disasters are difficult to be prevented and controlled in a targeted manner.This study took development roadways as the research background and conducted research work using a variety of methods,including case analysis,field monitoring,laboratory test,and theoretical analysis.First,the ranges of far-medium-near field mining activities that induce rock burst accidents in development roadways were divided.Subsequently,how long-distance mining activities induce rock burst accidents was explained.Finally,the mechanism of rock burst occurrence was clarified,and the technical system for prevention and control rock burst in development roadways considering the damage effect was proposed.The research results indicate that under the influence of mining activities in the working face,the frequency and magnitude of microseismic events in the development roadway are increasing.According to the microseismic energy density and the distance between the development roadway and the working face,the mining response indexφis defined.The value ofφin the development roadway caused by mining activities quantitatively expounds the relationship between coal damage and rock burst risk.The cyclic dynamic load from the medium-near field mining activities causes irreversible damage to the coal body,and the damage accumulates continuously.As theφvalue exceeds the critical value of rock burst occurrence,the dynamic load from the medium field low-intensity mining activities will also contribute to rock burst.With reference to the mechanism of rock burst occurrence in development roadways con-sidering the damage effect,a comprehensive technical system for rock burst prevention and control throughout the entire life cycle of development roadways was

关 键 词：远-中-近场 开拓巷道 微震能量密度 累积损伤 诱冲机理 防控技术体系 

分 类 号：TD353[矿业工程—矿井建设]