作者：王猛；司英涛；胡景宝；邓华易

‍第一作者单位：河南理工大学深井瓦斯抽采与围岩控制技术国家地方联合工程实验室

摘要：为解决深部高应力巷道围岩支护难维护问题,综合采用现场实测、数值计算、理论分析及工业性试验等方法,基于深部巷道钻孔卸压机理、钻孔参数确定方法及卸压钻孔与支护结构作用关系的分析,提出深部巷道围岩卸压协调控制技术,包括一次让压、钻孔卸压和二次高强锚注支护等3方面:一次让压支护使围岩产生恒阻变形,降低卸压引起的支护结构非协调受力;钻孔卸压的作用是转移巷道周边高应力,补偿围岩变形,减小巷道径向收敛;二次高强锚注支护为卸压协调控制技术的核心,目的是控制卸压后破碎岩体的后期蠕变。工程应用效果表明,该技术可有效控制深部巷道围岩大变形,具有一定的推广应用价值。

Abstract：A comprehensive research methods including field measurement, numerical modeling, theoretical analysis, and field test were used to solve the problem of stability maintenance of deep roadway.Based on the analysis of the mechanism of drilling pressure relief in the high-pressure roadwayl, a coordination control technology was proposed for the drilling pressure relief, including the initial pressure yielding, drilling pressure relief and secondary high strength bolt-grouting support.The initial yielding pressure support created constantly resistant deformation in the surrounding rock, and decreased the non-coordinate force caused by the support.The drilling pressure relief could transfer the high confining pressure and compensated the deformation of surrounding rock, and therefore reduced the radial convergence of roadway.The secondary high strength bolt-grouting support, as the core of the controlling technology, was to control the long-term creep of the fractured surrounding rock.It is the parameters used for the drilling pressure relief and the support structure that were determined.The engineering application showed that the technology is able to control the large deformation of surrounding rock in deep roadway, and has a potential value to be applied widely.

基金：国家自然科学基金资助项目(51674101)；河南理工大学博士基金资助项目(B2016-54)；国家级大学生创新创业训练计划项目(201610460063)；

关键词：深部巷道;钻孔卸压;应力转移;二次支护;协调控制;

DOI：10.16186/j.cnki.1673-9787.2017.05.002

分类号：TD353