大断面硐室开挖支护与围岩稳定性分析  

Large section cavern excavation support and surrounding rock stability analysis

作　　者：韦寒波[1] 高谦[1] 余伟健[1] 王文婷[2] 

机构地区：[1]北京科技大学土木与环境工程学院 [2]中国建筑科学研究院,北京100013

出　　处：《中国矿业》2007年第10期80-82,85,共4页China Mining Magazine

摘　　要：运用有限差分数值计算软件(FLAC),模拟分析了阳泉三矿芦南分区胶带驱动机硐室在分步开挖过程中围岩的稳定性。研究结果表明:以长锚索为主要支护手段的锚网喷支护形式,能保证硐室在使用过程中的安全稳定,初步设计的支护参数,从整体上能够满足硐室的变形使用要求;硐室的底板和拱角是硐室稳定性相对薄弱部位,在硐室施工过程以及硐室施工后,应采取适当措施,确保硐室施工过程以及长期的稳定性。In this paper, FLAC is adopted to simulate the surrounding rock stability of a belt drive conveyor cavern of Yangquan mine district during excavation and support by steps. The research results show that the bolt / steel mesh / shotcrete support system which use the long anchor cable as the chief support method could keep a long team safety stability of the surrounding rock of cavern, and the preliminary design of the support parameters can meet with the deformation demands. The floor and roof are the relatively weak parts of the cavern, so some adequate measure should be taken to assure stability during construction and the long team of the cavern.

关 键 词：锚网喷支护 大断面硐室 围岩稳定性 数值模拟 

分 类 号：TD354[矿业工程—矿井建设]