深部巷道长锚杆支护技术研究及应用  

Long Anchored Bolt Supporting Technology and Application in Deep Roadway

作　　者：于明江[1] 刘国保[1] 李飞[1] 李家全[1] 蔡猛[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤矿开采》2015年第4期85-88,39,共5页Coal Mining Technology

基　　金：国家自然科学基金资助项目(51434006)

摘　　要：分析了深部巷道围岩变形破坏特征主要为围岩变形量大、变形具有持续性和不可控性,提出采用长锚杆支护技术进行深部巷道的支护。数值模拟分析了不同支护系统巷道围岩的塑性区分布,结果表明:深部条件下巷道塑性区范围较大,加大支护强度对塑性区改变较小,普通锚杆锚索支护不再适用;深入研究了长锚杆的围岩控制机理,并说明了其在深部大变形巷道支护中的优越性。现场工业性试验表明,采用长锚杆支护后,围岩控制效果更佳,且帮部长锚杆在扩帮时能够被重新利用,支护效果较好。It was found that large, continuous and uncontrollable deformation was the deformation and damage characteristics of sur-rounding rock of deep roadway.Long anchored bolt supporting technology was put forward for deep roadway.Applying numerical simula-tion to analyzing plastic zone distribution with different supporting systems, results showed that plastic zone range was large under deep condition, improving supporting density only changing less plastic zone range and common anchored bolt and cable supporting was not adaptable.Surrounding rock control mechanism of long anchored bolt was deeply researched and its advantage for deep large-deformation roadway was expounded.Field test showed that surrounding rock effect was excellent after applying long anchored bolt, and long an-chored bolts at two-sides could be reused when expanding rib and supporting effect was good.

关 键 词：深部巷道 长锚杆 围岩控制 支护技术 

分 类 号：TD353[矿业工程—矿井建设]