摘要
针对龙门岭隧道洞口段特殊的地质条件,介绍了洞口段浅埋软弱围岩的设计及施工技术,通过多方案对比分析,最终选择了削竹式洞门结构,实现了隧道早进晚出,同时又降低了边仰坡高度,减少了防护工程量。
In view of special geological conditions of tunnel portal in mountain Longraen, this paper introduced the design and construction technology of portal shallow buried soft surrounding rock, through the comparison and analysis on multiple scheme, finally choice of cutting face tunnel structure, ensured tunnel out back into night, reduced the height of slope protection engineering, reduced the amount of supporting.
出处
《山西建筑》
2013年第7期169-171,共3页
Shanxi Architecture
关键词
软弱围岩
洞口设计
隧道
soft surrounding rock
portal design
tunnel
