摘要
在参照国内其他类似工程的基础上,采用了浇筑套拱、超前中管棚、超前小导管等方式进行超前预支护,开挖过程采用"三台阶七步开挖法",然后施工仰拱完成初期支护,后续二衬混凝土跟进的方式施工。整个浅埋段施工过程中安全稳妥,并且保证了施工进度,可以取得良好的效果。
On the basis of referring to other similar projects in China,the advanced support and protection is carried out by pouring sleeve arch,leading middle pipe shed,leading small pipe,etc..In the excavation project,the"three steps and seven steps excavation method"is adopted,and finally the inverted arch is constructed,the initial support is completed,and the subsequent construction of the second lining concrete is followed up.The whole construction process of shallow buried section is safe and secure,and the construction progress is guaranteed,and good results can be obtained.
作者
温东北
WEN Dong-bei(PowerChina Huadong Engineering Corporation Limited,Hangzhou 311122,China)
出处
《工程建设与设计》
2020年第18期163-164,共2页
Construction & Design for Engineering
关键词
浅埋段
大跨度
隧洞
管棚
shallow buried section
large-span
tunnel
pipe shed
