浅埋小近距大跨度隧道施工方案浅析

Discussion on shallow closely spaced large span tunnel construction planning

结合朝阳寺隧道下穿渝邻高速段地质情况,介绍了超浅埋大断面隧道的施工方案,重点阐述了超前大管棚和微台阶法的施工方法及监控量测内容,并进行了效果评价,为今后类似的工程施工积累了经验。

Combined with the geological situation of Chaoyangsi tunnel under Yu-Lin express highway section,the advanced shallow large section tunnel construction planning was introduced,the construction methods and monitoring measuring contents of advanced large pipe shed and micro step method were illustrated critically.The effect was evaluated so as to accumulate experience for future similar engineering construction.