摘要
通过对锚杆与金属网耦合支护的机理进行研究得到金属网可与锚杆进行强度耦合,提高巷道支护能力,并给出了金属网参与耦合支护的判定依据及金属网参数选择方法。运用FLAC3D软件对进风巷建模仿真,得到金属网与锚杆耦合支护可有效改善巷道围岩塑性区分布及减小巷道围岩应力峰值,提高巷道支护的安全性和稳定性。
Through the research on the mechanism of coupling support of bolt and metal mesh,it is found that metal mesh can be coupled with bolt to enhance the support ability of roadway,and the judgment basis of metal mesh participating in coupling support and the method of selecting metal mesh parameters are given.By using FLAC3D software to model and simulate the intake tunnel,it is found that the coupling support of metal net and bolt can effectively improve the distribution of plastic zone of surrounding rock and reduce the peak stress of surrounding rock,and improve the safety and stability of support.
作者
杨军
Yang Jun(No.2 Team of Sitai Mining Machine Excavation,Datong Coal Mine Group Co.,Ltd.,Datong Shanxi 037007)
出处
《山西冶金》
CAS
2020年第1期40-42,共3页
Shanxi Metallurgy
关键词
耦合支护
金属网
围岩应力
锚杆间距
coupling support
metal mesh
surrounding rock stress
bolt spacing
