隧道工程斜井进正洞挑顶加强支护方法

摘要

以南三龙铁路乾山隧道1号斜井施工为例，依据该工程场区的地质条件，提出了斜井进正洞挑顶施工中的支护加固措施，并对其施工工艺流程进行了阐述，总结了隧道施工过程中的注意事项，以期在保证施工质量与安全的前提下，加快施工进度。%Taking Qianshan tunnel No. 1 inclined shaft construction of Nansanlong railway as an example,according to the engineering field geol-ogy conditions,the paper puts forward picking peak bearing strengthening measures of the inclined shaft entering main tunnel,describes its con-struction technology procedures,and summarizes matters needing attention in tunnel construction process,so as to speed up the construction schedule in the premise of guaranteeing construction quality and safety.