金川二矿区14行风井返修支护效果分析  

Performance assessment of the supporting program of shaft No.14 in Jinchuan Mine Area No.2

作　　者：邓清海[1,2] 马凤山[1] 杨长祥 卢耀军 丁德民[1] 张亚民[1] 王杰[1] 郭捷[1] 

机构地区：[1]中国科学院地质与地球物理研究所工程地质力学重点实验室,北京100029 [2]山东科技大学,山东青岛266510 [3]金川集团有限公司二矿区,甘肃金昌737100

出　　处：《中国地质灾害与防治学报》2010年第1期81-86,共6页The Chinese Journal of Geological Hazard and Control

基　　金：国家自然科学基金项目(40972197);山东科技大学科学研究"春蕾计划"项目(2008AZZ016)

摘　　要：针对金川二矿区14行风井的返修支护方案,本文根据金川矿区高应力破碎岩体的条件,从锚杆、喷射混凝土、钢筋网三方面,分析了该方案中喷锚网支护的作用机理,并通过数值方法分析了该返修支护方案的效果。研究结果表明:14行风井的返修支护措施对竖井围岩移动、变形有一定的限制作用,但效果不是很好;随着开采深度和规模的扩大,井筒围岩还将产生较大的位移,并有可能重新发生破坏。Taking the supporting program for repairing Shaft No.14 in Jinchuan No.2 mine area as the research object,we firstly analyzed the mechanism of its shotcrete-bolting technique under the condition of high stress and cracked rock mass in Jinchuan Nickel mine.Furthermore,we analyzed its reinforcement performance by numerical simulation.The result showed that the supporting program took effect to restrict movement and deformation of the rock mass,but its performance is fair.As the mining depth and scale increase,the surrounding rock of the shaft would be deformed further or even be destroyed.

关 键 词：14行风井 返修 支护方案 数值分析 金川矿 

分 类 号：P642.3[天文地球—工程地质学]