摘要
对多雨地区的浅埋、大跨度、软弱围岩隧道的洞口段施工,其施工方案的选择与确定、将直接对施工进度、工程质量产生影响。大梅沙隧道洞口段施工采用长大管棚超前支护、中隔壁法施工、围岩监控量测技术,较好地解决了施工难题,为浅埋、大跨、软弱围岩公路隧道的洞口段施工探索出一套较为科学的施工技术。
For construction of portal segment of soft surrounding rock tunnel with shallow - depth and large - span in rainy area, the determination of construction scheme will directly influence process and quality of construction. During the construction of portal segment in Dameisha tunnel, the large pipe -roof protection, the medium diaphragm and the surrounding rock supervisory control were used, which solved some difficult problems in construction very well. This construction provides a set of scientific construction techniques for future construction of portal segment of road tunnel with shallow -depth and large -span in soft surrounding rock.
出处
《世界隧道》
1999年第6期36-39,16,共5页
关键词
浅埋隧道
大跨
软岩
公路隧道
洞口施工
Shallow - Depth Tunnel
Large-Span
Soft Rock
Portal Construction
