浅析双上侧壁导坑隧道开挖施工工艺
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摘要：双上侧壁导坑施工技术是根据新奥法原理，通过对双侧壁导坑法的改进，同时与台阶法相结合进行大跨度隧道开挖的新技术。该技术采用双侧壁导坑法与台阶法相结合进行施工，既能保证施工安全，又能降低造价，加快施工进度，能够满足对变形要求严格的项目施工。本文详细介绍了双上侧壁导坑施工方法与注意事项。
关键词:隧道; 双上侧壁导坑; 起拱线; 施工工艺
abstract: double wall daokeng construction technology is in new orleans method according to the principle of
meshshotcreting firstly the improvement of the method, and the steps method of large span tunnel excavation of the new technology. the technology uses meshshotcreting firstly method and steps method for construction, which can ensure the construction safety and reduce cost, speed up the construction progress and can meet the requirements of the project construction strictly deformation. this paper introduces the construction method of the double wall daokeng and precautions.
keywords: tunnel; double wall on daokeng; bulging lines; construction technology