当前铁路隧道建设中几个问题的探讨  

Discussion on Several Problems Concerning Current Railway Tunnels Construction

作　　者：张建生[1] 

机构地区：[1]南宁铁路局田德铁路建设指挥部,广西百色533000

出　　处：《铁道标准设计》2013年第7期78-80,共3页Railway Standard Design

摘　　要：针对当前铁路隧道钻爆法建设中普遍采用的机具装备与工序组织,分析现阶段存在仰拱栈桥长度不足、初期支护工序矛盾、锁脚锚杆设置意见不统一、初期支护缺乏检测4个方面的问题,提出加长仰拱栈桥、调整初期支护工序、规范锁脚锚杆设置、增加初期支护无损检测的解决方案。Focusing on commonly-used machinery and equipment in current railway tunnels constructed by drill-blasting method as well as process organization, four existing problems are discussed in this paper, including insufficiency of inverted arch trestle length, contradiction of initial support process, difference of feet-lock bolt settlement, and shortage of initial support testing. And then the methods to solve above-mentioned problems are proposed in this paper, including lengthening inverted arch trestle, adjusting initial support process, standardizing settlement of feet-lock bolt, increasing nondestructive testing of initial support.

关 键 词：铁路隧道 仰拱栈桥 初期支护 锁脚锚杆 无损检测 

分 类 号：U459.1[建筑科学—桥梁与隧道工程]