基于连采施工工艺大断面切眼一次成巷技术  

Study on Once-tunneling Technology for Large Cross Section Open-Off Cut Based on Continuous Mining Construction

作　　者：刘平 贾江伟 刘伟[2] 

机构地区：[1]国电建投内蒙古能源有限公司,内蒙古鄂尔多斯017000 [2]西安科技大学建筑与土木工程学院,陕西西安710054

出　　处：《煤矿安全》2013年第3期89-92,共4页Safety in Coal Mines

摘　　要：为提高大断面切眼掘进速度及保证巷道掘进过程的整体稳定性,提出了一种适合连采机施工的一次成巷技术,大大提高了巷道掘进速度。采用Midas/GTS数值模拟研究了连采施工一次成巷与传统分断面二次成巷2种开挖方式下,开切眼的围岩变形特点及应力分布特征。研究结果表明:连采施工一次成巷时顶板下沉量、底臌量及围岩塑性区都较小,并且巷道受力相对均匀,更有利于巷道稳定。In order to improve the driving speed of large section open - off cut and ensure roadway overall stability during tunneling process,the once -tunneling technology suited for continuous miner is proposed, which greatly improves the driving speed. A Midas/ GTS numerical simulation is applied to study the surrounding rock deformation features and the stress distribution features of the open - off cut under two kinds of excavation modes of continuous mining once - tunneling and traditional sub - sectional secondary tunneling. The results show that the roof subsidence value, the floor heave value and the plasticity zone of the surrounding rock are small with con- even and favorable to the stability of the surrounding rock.

关 键 词：大断面切眼 连采施工 一次成巷 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]