洞门 meaning in Chinese
tunnel portal
Examples
- Application of soil nailing in tunnel portal excavation
土钉支护在隧道洞门开挖中的应用 - The construction technologies of cave without top fill and tunnel gate
明洞和洞门工程施工技术； 4 - 2 . the ground pressure and lining stress of lining of entrance increases as gradient of up - slope increases
( 2 )洞门段围岩压力及衬砌结构受力随仰坡坡度增大而增大。 - 4 . the characteristics of stress distribution in entrance structure prove that spatial effect occurs within certain length
( 4 )洞门段结构受力分布特征表明洞口段空间效应长度是一定的。 - The main characteristics are as follows : l . the stress characteristic of lining of entrance corresponds with that of shell structure
其主要特征为： ( 1 )洞门段衬砌结构受力特征与壳体结构受力特征相符。