施工技术 2017年7月下 104 CONSTRUCTION TECHNOLOGY 第46卷第14期 D0I:10.7672/sgjs2017140104 超浅埋隧道短台阶临时仰拱法施工技术 邓洪亮，马丽斌，郭树祥，赵树杰 (北京工业大学建筑工程学院，北京100124) [摘要]黄董坡隧道以超浅埋方式下穿21公路.为保证施工安全，采用既有线路改移、中管棚支护及小导管超 前注浆预加固措施和短台阶临时仰拱法施工，提高了围岩的自稳能力，控制了隧道在施工过程中的沉降和收敛，保 证了隧道的施工安全.监测结果表明：拱顶下沉、水平收敛、地表沉降最大值分别为19.57 16.78 20.17mm 均在 规范规定的控制基准范围之内，隧道围岩处于稳定状态，施工过程隧道没有出现任何开裂和塌陷等现象，说明所采 用的施工技术措施合理可行，方案安全可靠. [关键词]地下工程；隧道；监控；测量；施工技术 [中图分类号]U455 [文献标识码]A [文章编号]1002-8498(2017)14-0104-04 Construction Technology of Short Step Temporary Invert Method for Ultra Shallow Burried Tunnel DENG Hongliang MA Libin GUO Shuxiang ZHAO Shujie (School of Architecture Engineering Beijing University of Technology Beijing 100124 China) Abstract:Huangdongpo tunnel goes through the S201 highway in an ultra shallow buried way.In order to ensure the safety of the construction the existing lines changed the middle pipe shed support and the small pipe pregrouting reinforeement measures and the short step temporary inverted arch method are used for construction.The stability of surrounding rock is improved the settlement and convergence of the tunnel in the construction process are controlled and the construction safety of the tunnel is ensured.The monitoring results show that the crown settlement and horizontal convergence the maximum surface subsidence were 19.57 16.78 20.17mm which are within the control range of reference standard the tunnel wall rock is stable and the construction process of the tunnel without any crack and collapse phenomen...
超浅埋隧道短台阶临时仰拱法施工技术.pdf
