摘要
中夹岩的稳定是小净距隧道建设成功的关键。而小导管注浆、系统锚杆及水平贯通预应力锚杆是应用最为广泛的3种中夹岩加固技术,并在实践工程中得到有效验证。中夹岩加固技术主要通过提高围岩力学参数与改变力学状态等发挥加固作用。小导管注浆多适用于低类别围岩;高类别围岩中采用系统锚杆较为合理;水平贯通预应力锚杆及其组合加固方法适用于各类别围岩。
The stabilization of the shared rock is an importomt factor for success of neighborhood tunnel.Little tremie grouting,systemic rock bolt and horizontal prestressed rock bolt are the most effective reinforcing techniques which have been validated in practice.These techniques have an effect by improving the mechanical parameters and changing the mechanical state.The little tremie grouting is applicable to low-level surrouding rock;systemic rock bolt is reasonable to be used in the high-level surrouding rock;horizontal prestressed rock bolt and its assembled measures are the same with different surrouding rock.
出处
《施工技术》
CAS
北大核心
2006年第S2期172-174,共3页
Construction Technology
基金
北京工业大学研究生科技基金项目资助(yjk-2005-109)
关键词
小净距隧道
加固技术
稳定性
neighborhood tunnel
reinforcing technique
stabilization
