机场跑道地下穿越方案比较研究

Comparative Research on Construction Scheme of Tunnel under Runway

浦东国际机场二期工程建设存在着在运营跑道下实施地下穿越的可能性,在运营跑道下实施地下穿越难度很大,而目前国内外软土地区在跑道下实施地下穿越工程很少,因此论文通过研究分析了服务车道地下穿越跑道区域的可行性及方案。首先在分析浦东机场地质条件、线路布置、线路断面以及施工的限制条件的基础上,分析了明挖法、管幕箱涵法、盾构法等几种不同方案的实施方案和效果,并从安全、工期、经济等方面进行了综合比较。通过研究得出在浦东机场已有跑道下实施地下穿越是可行的,并提出了建议实施方案,为浦东机场进一步规划细化和服务车道地下穿越提供技术支持。

For the needs of Second - term Project for Pudong Airport there is possibility to construct a tunnel of serving driveway under the operating runway, but it＇s obviously of great difficulty, and nowdays there are few such projects for reference,so it is urgent to carry out the research to make sure of the feasibility for the construction . Based on the analysis of geologic information, cross section of the line and restriction of construction, in this paper three construction schemes and the effects of each scheme were analysed ： cut and cover method, pipe roof culvert box advancing method, shield driving method. In the end, in this paper three construction schemes have been compared in such aspects such as safety ,delivery time and economy. According to the comparison ,this paper draws a conclusion that it is feasible to construct a tunnel under the operating runway and provides some advices for the construction of serving driveway.