本文通过ShapeMetrix 3D系统对金星金矿12 号脉各中段测点节理数据进行统计,结合室内岩石力学实验,基于Q系统、RMR分级对井下岩体进行质量分级,得出金星金矿12 号脉各中段围岩绝大部分属于Ⅱ～Ⅲ类岩体.并通过理论计算,得出井下巷道可采用管缝式锚杆和金属网对顶板及两帮进行支护,锚杆网度2 m×2 m;锚杆长度2.2 m,锚杆间距1.5 m.
Optimization Theory of Support System of Jinxing Gold Mine in Qingdao based on Rock Mass Quality Classification
In this paper,ShapeMetrix 3D system is used to make statistics on the joint data of the measurement points in the middle section of vein 12 of Jinxing Gold mine.Combined with the indoor rock mechanics experiment,the quality of underground rock mass is classified based on Q system and RMR classification.It is concluded that most of the surrounding rocks in the middle section of vein 12 of Jinxing Gold mine belong to class Ⅱ～Ⅲ rock mass.Through theoretical calculation,it is concluded that the roof and two walls of underground roadway can be supported by pipe joint bolt and metal mesh,and the mesh of bolt is 2 m×2 m.Bolt length 2.2 m,bolt spacing 1.5 m.
rock mechanicsrock mass quality classificationsupport optimization
NETL
NSTL
万方数据
