摘要
研究受多中段采动影响的竖井工程稳定性问题,成为我国最大充填法开采矿山——金川二矿区的一项重要课题,其在国内乃至世界上亦是首次,引起了人们的关注。采用数值模拟的方法对此进行了研究,研究结果表明,加大贫矿开采后形成4个中段同时回采相对3个中段开采回采来说,只是加大竖井工程破坏的风险,尤其是竖井井壁位移方面比较突出,但并没有改变竖井今后可能发生变形、破坏的模式,其变形、破坏的模式依然是在延续现今单纯三中段富矿开采时竖井变形和破坏的模式,穿过竖井井筒的断层破碎带仍然是竖井可能发生破坏的突破口。
The study of shaft engineering's stability influenced by muti-level mining as an important research subject of Jinchuan No.2 mine area,the biggest cut-and-fill mine in China,has aroused people's attention.It is the first study in domestic as well as in the world.By using numerical simulation method,this study results indicate that compared with 3 levels stoping,4 levels simultaneous mining formed from lean ore mining's increased will not change the pattern of shaft deformation and cave-in,no more than increasing the risk of shaft engineering's cave-in,especially on shaft wall displacement. The deformation and cave-in mode is still 3 levels rich ores mining mode.Fault fracture zone through shaft wall is still the breakthrough of shaft cave-in.
出处
《金属矿山》
CAS
北大核心
2009年第S1期382-385,共4页
Metal Mine
基金
"十一五"国家科技支撑计划重大项目(编号:2008bab32b01)
关键词
多中段开采
采动影响
竖井工程
数值模拟
Muti-level mining
Mining influence
Shaft engineering
Numerical simulation
