平行采动影响大巷“深卸-浅塑”围岩综合控制技术  

Comprehensive control technology of “deep unloading and shallow remodeling” for surrounding rock in parallel mining roadway

作　　者：周逸群 吴建星[1,2,3] 张光亮 李治国 任硕 郝晓刚[3] ZHOU Yi-qun;WU Jian-xing;ZHANG Guang-liang;LI Zhi-guo;REN Shuo;HAO Xiao-gang(Coal Mining and Design Branch,China Coal Research Institute,Beijing 100013,China;CCTEG Coal Mining Research Institute,Beijing 100013,China;Coal Mining and Designing Department,Tiandi Science and Technology Co.,Ltd.,Beijing 100013,China;Shanxi Qinxin Coal Industry Co.,Ltd.,Changzhi 046011,China)

机构地区：[1]煤炭科学研究总院开采研究分院,北京100013 [2]中煤科工开采研究院有限公司,北京100013 [3]天地科技股份有限公司开采设计事业部,北京100013 [4]山西沁新煤业有限公司,山西长治046011

出　　处：《煤炭工程》2022年第11期24-28,共5页Coal Engineering

基　　金：国家自然科学基金(52004126);天地科技股份有限公司科技创新创业资金专项项目“巷道围岩近场裂隙动态迁移特征与注浆扩充改性研究”(2022-2-TD-MS013)

摘　　要：针对受平行采动影响大巷持续大变形的问题,在全面地质力学测试基础上,分析巷道大变形特点及围岩控制难点,将回采巷道切顶卸压、大巷断底卸压与围岩注浆重塑技术相结合,形成了平行采动大巷“深卸-浅塑”围岩综合控制技术。现场应用结果显示:煤柱应力整体升高幅度可控;工作面回采过程中隅角基本无悬顶;巷道顶底板最大变形量为216mm,两帮最大变形量为296mm、锚杆索受力稳定、顶板总离层值小于20mm,较好实现被保护大巷围岩控制的目的。Aiming at the continuous large deformation of roadway,based on geomechanical testing,the characteristics of parallel mining roadway and the difficulties in rock control are analyzed.The roof cutting pressure relief of the mining roadway,floor cutting pressure relief in main roadway and grouting surrounding rock remodeling are combined to form the“deep unloading shallow remodeling”surrounding rock comprehensive control technology of the parallel mining roadway.The monitoring results of roadway ground pressure show that,the coal pillar stress is stable in time after the mining increase;there is almost no suspended roof on the corners;the maximum deformation of roof and floor is 296 mm,the stress on bolt cable is stable;and the total roof separation is within 20 mm.The effect of surrounding rock control in main roadway is favorable.

关 键 词：平行采动 围岩控制 回采巷道卸压 大巷断底卸压 围岩注浆重塑 

分 类 号：TD353[矿业工程—矿井建设]