煤柱区巷道超前支护段围岩破坏机制及控制技术  

Surrounding Rock Damage Mechanism and Control Technology of Advanced Supporting Section of Roadway under Coal-pillar

作　　者：孙运江[1] 李通达[1] 宋志强[1] 何尚森[1] 谢生荣[1] 李世俊[1] 王金光[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》2014年第3期68-71,共4页Coal Mining Technology

基　　金：国家自然科学基金重点资助项目(51234005);国家重点基础研究发展计划资助项目(2010CB226802);中央高校基本科研业务费专项资金资助项目(2010QZ06)

摘　　要：新阳矿新102综放工作面材料巷超前支护段由于受多重支承压力和新102工作面采动影响,变形严重、支护困难,在详细分析巷道超前支护段变形破坏机制的基础上,提出了＂锚网＋W钢带＋锚索＋U型钢棚＂的联合支护方案,并在超前工作面30m范围内采用ZT2×3200/18/35型超前支护液压支架加强支护,在超前工作面30~100m范围内采用＂单体支柱＋π型钢梁,1梁3柱＂的加强支护方式。现场观测表明,材料巷超前支护段顶板下沉量由原先平均27mm/d减少到8mm/d,保障了工作面安全生产,加快了工作面推进速度,提高了经济效益。In Xinyang Colliery,serious deformation and difficult supporting occurred in advanced supporting section of rail roadway of new 102 full-mechanized caving mining face influenced by multi-time abutment pressures and new 102 face mining. On the basis of analyzing deformation and damage mechanism of the roadway,a combined supporting of ＂anchored mesh＋W steel strip＋anchored cable＋U-style steel＂scheme was put forward. Within 30m of advanced supporting,ZT2×3200 /18 /35 advanced powered support was applied to reinforcing supporting. At the range of advanced 30-100m,reinforcement supporting of ＂single prop＋π-style steel beam,1 beam＋3props＂was applied. On-the-spot observation showed that roof subsidence reduced from 27mm /d to 8mm /d. This technology increased mining speed and improved economic profit in safety.

关 键 词：煤柱下巷道 超前支护 破坏机制 围岩控制 

分 类 号：TD353[矿业工程—矿井建设]