复杂施工条件下城市隧道深基坑施工技术的研究

Study on Deep Foundation Pit Construction Technology of Urban Tunnel under Complicated Construction Condition

伴随城市化进程的日益发展,我国各大中城市交通压力迅速上升,交通拥堵这一普遍性社会问题已日益凸显,城市隧道工程作为缓解交通压力的重要措施,在城市交通建设中得到了极大的应用。通过对兰州市南山路工程第五标段民大隧道复杂施工条件的分析,针对该工程地处陇海铁路沿线狭长地带的特殊性,从明挖城市隧道深基坑开挖及支护、铁路营业线路周围施工安全等相关因素出发,对复杂施工条件下城市明挖隧道施工技术进行探讨。

With the growing urbanization, the traffic pressure in large and medium-sized cities of China rises quickly. As a result, the universal social problem of traffic jam has become increasingly prominent. The urban tunnel engineering as an important measure to ease traffic pressure has been widely applied in urban transport development. The paper probes into the construction technology of urban tunnel excavation under the complicated conditions by analyzing the complicated construction conditions of Bid Section 5 Minda Tunnel of Lanzhou Nanshan Road Project, aiming at the particularity of this project located in the long and narrow region along Longhai Railway and considering the relative factors of the deep foundation pit excavation and supporting of urban tunnel, the construction safety around the railway operation lines and etc.