动载扰动下复合顶板巷道围岩变形破坏特征  

Characteristics of Surrounding Rock Deformation and Failure of Composite Roof Roadway under Dynamic Load Disturbance

作　　者：孙泽权 蒋力帅[1] 郭涛 王文海 冯昊 王庆伟 唐鹏 SUN Zequan;JIANG Lishuai;GUO Tao;WANG Wenhai;FENG Hao;WANG Qingwei;TANG Peng(State Key Laboratory of Mining Disaster Prevention and Control,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东科技大学矿业灾害预防与控制国家重点实验室,山东青岛266590

出　　处：《煤炭技术》2022年第1期13-19,共7页Coal Technology

基　　金：国家自然科学基金资助项目(52074166);中国博士后科学基金第13批特别资助(2020T130385);山东省高等学校青创科技支持计划(2020KJG0016)。

摘　　要：以河南省赵固二矿11020下顺槽为工程地质背景,采用现场调研、数值模拟等方法,建立复合顶板巷道模型组,研究动载扰动下围岩变形特征,总结巷道断面矢量变形与低应力区演化规律及不同顶板结构围岩稳定性评价。研究结果表明:动载扰动下复合顶板围岩变形规律会随着顶板岩层结构的改变而改变,且围岩变形各项结果显著增加:围岩矢量变形面积增加266.3%(18.6 m^(2))、117.8%(26.5 m^(2))、86.7%(19.5 m^(2))、150%(9 m^(2))、78.6%(16.5 m^(2)),低应力区面积增加154.06%(99.2 m^(2))、170.8%(90.5 m^(2))、212.5%(48.0 m^(2))、88.2%(42.8 m^(2))、107.8%(54.2 m^(2)),对其围岩稳定性进行评价划分后,通过现场支护试验验证其分级的合理性。Taking the 11020 lower channel of Zhaogu No.2 mine in Henan province as the engineering geological background,using methods such as field investigation and numerical simulation to establish a composite roof roadway model group,study the deformation characteristics of surrounding rock under dynamic load disturbance,and summarize the vector deformation and low stress of the roadway.Regional evolution law and surrounding rock stability evaluation of different roof structures.The research results show that the deformation law of the surrounding rock of the composite roof under dynamic load disturbance will change with the change of the roof rock structure,and the results of the surrounding rock deformation will increase significantly:the vector deformation area of the surrounding rock increases by 266.3%(18.6 m^(2)),117.8%(26.5 m^(2)),86.7%(19.5 m^(2)),150%(9 m^(2),78.6%(16.5 m^(2)),the area of low stress area increased by 154.06%(99.2 m^(2)),170.8%(90.5 m^(2)),212.5%(48.0 m^(2)),88.2%(42.8 m^(2)),107.8%(54.2 m^(2)),after evaluating the stability of the surrounding rock,the rationality of the classification is verified through on-site support tests.

关 键 词：复合顶板巷道 动载扰动 数值模拟 围岩稳定性评价 

分 类 号：TD325[矿业工程—矿井建设]