加锚裂隙岩层损伤机理及围岩控制现状及展望  

Present situation and prospect of damage mechanism and surrounding rock control of anchored fractured rock

作　　者：韦四江[1,2] 李鑫鹏 黄英俊 WEI Sijiang;LI Xinpeng;HUANG Yingjun(School of Mining Engineering,Henan Polytechnic University,Jiaozuo 454000,China;Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization,Jiaozuo 454000,China)

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]煤炭安全生产与清洁高效利用省部共建协同创新中心,河南焦作454000

出　　处：《煤炭工程》2023年第8期88-95,共8页Coal Engineering

基　　金：河南省矿产资源高效开采与综合利用重点实验室开放基金项目(KCF2205);国家自然科学基金项目(51974104)。

摘　　要：以突出煤层瓦斯抽采为背景,介绍了回采巷道尤其是底板巷围岩受到的多重扰动过程,梳理了回采巷道裂隙围岩损伤机理及稳控方法。介绍了抽采钻孔裂隙扩展规律、煤层卸压裂隙分布特征;总结了加锚层状裂隙岩层裂隙扩展规律、滑移面失稳机制和锚杆作用机制方面的研究进展;探讨了循环荷载条件下,煤岩样及加锚煤岩样的损伤演化机制。回顾了复杂条件下(采动影响、高应力、破碎围岩)巷道控制方法,包括注浆加固、锚注加固及围岩联合控制技术等。最后,分析了上述研究存在的不足,对未来的发展趋势进行了展望;多重扰动条件下,应在回采巷道围岩裂隙发育演化特征和围岩地质强度因子演化、裂隙岩层和加锚裂隙岩层低周疲劳损伤演化特征、本构关系及回采巷道围岩稳控方法和技术等方面加强研究。Based on the background of gas extraction in outburst coal seam,the multiple disturbance process of surrounding rock of mining roadway,especially floor roadway,is introduced,and the damage mechanism and stability control method of surrounding rock of mining roadway are combed.The expansion law of the fractures in the extraction boreholes and the distribution characteristics of the pressure relief fractures in the coal seams are introduced.The research progress on the crack propagation law,the instability mechanism of the sliding surface and the action mechanism of the anchor bolt in the anchored layered fractured rock is summarized.The damage evolution mechanism of coal samples and anchored coal samples under cyclic loading is discussed.the roadway control methods under complex conditions(mining influence,high stress,broken surrounding rock)in recent years are reviewed,including grouting reinforcement,bolt-grouting reinforcement and surrounding rock joint control technology.Finally,the shortcomings of the above research are analyzed and the future development trend is prospected.Under the multiple disturbances,the research should be strengthened in the aspects of the development and evolution characteristics of the surrounding rock fractures of the mining roadway,the evolution of the geological strength factors of the surrounding rock,the evolution characteristics of the low-cycle fatigue damage of the fractured rock strata and the anchored fractured rock strata,the constitutive relationship,and the stability control methods and technologies of the surrounding rock of the mining roadway.

关 键 词：瓦斯抽采 巷道围岩 加锚裂隙岩层 损伤机理 围岩控制 

分 类 号：TD353[矿业工程—矿井建设]