culvert box造句

• 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
  摘要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。