小净距隧道施工控制要点作者:沈天佑来源:《价值工程》第 07 期 摘要: 小净距隧道普通是指并行双洞隧道间夹岩石厚度较小,普通不大于 1
5 倍隧道开挖断面宽度的一种特殊隧道构造型式
本文针对成渝客专新中梁山隧道小净距隧道的特点,从施工角度探讨小净距隧道的超前支护、洞身开挖、中间岩柱加固、锚喷支护、监控量测等核心工序的施工办法和技术方法
Abstract : A small spacing tunnel usually refers to a special tunnel structure with a small thickness between two parallel double tunnels and generally less than 1
5 times the width of the tunnel excavation section
In this paper , according to the characteristics of the Zhongliangshan Tunnel with small spacing tunnel in Chengdu-Chongqing Highway , this paper discusses the construction methods and technical measures of key processes such as advanced support , excavation of tunnel body , reinforcement of middle rock columns , support of anchor and shotcrete , monitoring and measurement , etc
from the perspective of constr