板桃隧道洞口段两超小净距隧道的施工

Portal section construction of Bantao twin tube tunnel with small interval

文章主要介绍了新建渝怀铁路板桃隧道洞口段两超小净距隧道的施工概况以及施工中采用的注浆水平导管预加固和低振动控制爆破技术。

This paper introduces the portal section construction of Bantao twin tube tunnel with small interval on Yuhuai railway line. In addition pre - reinforcement with horizontal grouting pipe and control blast with low vibration are implemented during the construction.