深部高构造应力巷道冲击地压发生临界应力及影响因素研究  

Study on critical stress and influencing factors of rock burst in deep roadway with high tectonic stress

作　　者：宋义敏 邓文良 张苑玉 赵亚周 许海亮 安栋 张军徽 韩大永 SONG Yimin;DENG Wenliang;ZHANG Yuanyu;ZHAO Yazhou;XU Hailiang;AN Dong;ZHANG Junhui;HAN Dayong(School of Civil Engineering,North China University of Technology,Beijing 100144,China;Hongyang Third Mine,Shenyang Coking Coal Co.,Ltd.,Liaoyang Liaoning 111300,China)

机构地区：[1]北方工业大学土木工程学院,北京100144 [2]沈阳焦煤股份有限公司红阳三矿,辽宁辽阳111300

出　　处：《中国安全生产科学技术》2023年第9期83-88,共6页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(51774015,51474013)。

摘　　要：为研究深部高构造应力巷道中构造应力对冲击地压发生的影响,采用层滑结构失稳力学模型,获得冲击地压发生临界条件,分析巷道尺寸、煤性质、构造应力等因素对冲击地压发生的影响。研究结果表明:冲击地压受巷道尺寸、煤性质、构造应力、煤岩厚度和煤岩界面摩擦影响,临界载荷随巷道宽度、构造应力和煤岩界面摩擦系数增大而减小,随煤峰值前后模量比、煤层厚度和顶板厚度增大而增大;临界塑性活动区长度随巷道宽度、煤峰值前后模量比、构造应力、煤层厚度和顶板厚度增大而增大,随煤岩界面摩擦系数增大而减小。研究结果可为高水平构造应力巷道冲击地压发生临界条件及冲击地压发生影响因素的研究提供理论参考。In order to study the influence of tectonic stress on rock burst in deep roadway with high tectonic stress,the mechanical model of layered sliding structure instability was used to obtain the critical conditions of rock burst,and the influence of roadway size,coal properties,tectonic stress and other factors on rock burst was analyzed.The research results show that the rock burst is affected by roadway size,coal properties,tectonic stress,the thickness of coal-rock and coal-rock interface friction.The critical load decreases with the increase of roadway width,tectonic stress,and coal-rock interface friction coefficient,and increases with the increase of modulus ratio before and after coal peak,coal seam thickness,and roof thickness.The length of critical plastic activity zone increases with the increase of roadway width,modulus ratio before and after coal peak,tectonic stress,coal seam thickness,and roof thickness,and decreases with the increase of coal-rock interface friction coefficient.The research results can provide theoretical reference for the study of critical conditions and influencing factors of rock burst in high level structural stress roadway.

关 键 词：冲击地压 构造应力 层滑结构失稳 

分 类 号：X936[环境科学与工程—安全科学]