“桥式”大锁脚支护装置在膨胀性土层隧道中的应用

The application of “Bridge”big lock feet support device in expansion soil layer tunnel

简述了传统锁脚方案的缺点,以太兴铁路小河沟隧道为例,介绍了"桥式"大锁脚支护装置在膨胀性土层隧道初期支护中的应用,并分析了"桥式"大锁脚方案的优势,指出采用"桥式"大锁脚方案施工,效果显著,操作方便,有效保证了小河沟隧道的安全施工。

This paper briefly described the shortcomings of traditional feet lock scheme, taking Taixing railway Xiaohegou tunnel as an example, introduced the application of ＂Bridge＂ lock feet support device in expansive soil layer tunnel initial support, and analyzed the advantages of ＂Bridge＂ big feet lock scheme, pointed out that the ＂Bridge＂ big lock feet scheme construction had obvious effect, convenient operation, effec- tively ensured the construction safety of Xiaohegou tunnel.