广(州)梧(州)高速公路河口至平台段隧道洞口设计

广梧高速公路隧道洞口设计始终贯彻"零开挖"的环保理念。以广梧高速公路64个隧道洞口为依托,根据不同的地形、地质条件,主要从进洞方法、洞口辅助进洞措施、洞门形式三个方面对全线隧道洞口设计施工情况进行了分析总结。进洞方法采用了正交进洞、斜交进洞和单向进洞;洞口辅助进洞措施采用了明洞、护拱法、地表反压护拱加固土体法、反压回填明洞暗做法、超前小导管、短管棚、长管棚等辅助进洞措施或者是这些措施的组合;洞门形式采用了端墙式和明洞式。

Tunnel Portal Design of He - Kou to Ping - tai Section of Guangzhou - wuzhou Expressway

＂Zero Excavation＂ concept of environmental protection has been implemented in tunnel portal design for Guangzhou - wuzhou Expressway. Based on the 64 tunnel portals at Guangzhou - wuzhou Expressway and the different terrain, geological conditions, the design and construction of portals through the expressway project has been mainly analyzed and summarized from such three aspects as the entering tunnel method, tunnel entrance auxiliary entering measures and portal types. Orthogonal, oblique and unidirectional methods have been adopted for entering tunnel. Opencut tunnel, arch protection method, surface reinforced soil inverted arch pressure method, tunneling by backfilled opencut with inverted pressure, advanced small pipes, short pipe shed, long pipe shed and other auxil- iary entering tunnel measures have been adopted for auxiliary tunnel entering. End wall and opencut have been adopted for portal types.