摘要
Abstract
The drainage system is one of the important components of cable tunnels,which plays an important role in ensuring the safety of cable tunnel.For shield cable tunnels,there is no complete and clear design and value basis for the drainage system in the standard specifications.At the same time,changes of the tunnel paths and longitudi-nal section caused by external factors also make new requirements for the design of the tunnel drainage system.Through a specific analysis of the source,characteristics,and drainage standards of water inside shield cable tun-nels,combined with the corresponding standard specifications and relevant documents of State Grid Corporation of China,the principles of determining the drainage amount of shield cable tunnels and the design calculation method of tunnel drainage ditches were introduced in this paper.The design method of drainage system in the conventional vertical shaft was proposed for the design of tunnel sumps and drainage pump groups.By investigation and research,an innovative design method for sumps and drainage pump group in the tunnel inner passage was proposed for the first time,as well as the basis for relevant data values,which can effectively improve the flexibility of tunnel design and construction safety,and reduce comprehensive costs and shorten the construction period.This can provide ref-erence for similar forms of tunnel design.关键词
盾构电缆隧道/排水系统/隧道内道中集水坑Key words
shield cable tunnel/drainage system/sump in tunnel inner passage分类
交通工程
