摘要
中空涨壳式预应力锚杆作为应对地下洞室岩爆的措施,正得到越来越广泛的应用。本文基于引汉济渭工程深埋TBM施工隧洞施工采用中空涨壳式预应力锚杆和砂浆锚杆支护案例的对比,简要介绍了中空涨壳式预应力锚杆的支护原理。主要通过实体试验,对中空涨壳式预应力锚杆的力学性能、围岩位移影响、拉拔力等应用效果进行研究,以期为隧洞在类似条件下的初期支护措施优化、动态设计等提供参考。
As a measure to deal with the rockburst in underground caverns,hollow inflatable pre-stressed anchor bolts are being used more and more widely.Based on the comparison of the case of hollow inflatable pre-stressed anchor bolts and mortar anchor bolts used in the construction of a deep-buried TBM tunnels of Hanjiang-to-Weihe River Water Diversion Project,this paper briefly introduces the support principle of hollow inflatable pre-stressed anchor bolt.Through physical experiments,the mechanical performance,influence on surrounding rock displacement,pull-out force,and other application effects of the hollow inflatable pre-stressed anchor bolt are studied.The aim is to provide reference for optimizing initial support measures and dynamic design in similar conditions for tunnel construction.
作者
蒋于波
JIANG Yubo(Sichuan Ertan International Engineering Consulting Co.,Ltd.,Chengdu 610072,China)
出处
《水利建设与管理》
2023年第9期60-64,共5页
Water Conservancy Construction and Management
关键词
中空涨壳式预应力
锚杆
TBM
深埋
隧洞
hollow inflatable pre-stress
anchor bolt
TBM
deep-buried
tunnel
