盖挖法是国外当前在城市交通繁忙的街道下修建地铁车站或地下隧道应用最为广泛的一种施工方法。北京地铁第一线即将由复兴门站继续向东延伸,首当其冲的是西单车站。西单车站位于长安街的西单路口,是北京市内交通最繁忙的路口之一。车站施工方案经过多方比选,已初步确定采用盖挖法施工,今后还必 Cover excavation method is currently abroad in the busy streets of the city to build subway stations or underground tunnels is the most widely used construction method. The first line of the Beijing Subway will soon extend eastward from Fuxingmen Station, with Xilbany Station the first to suffer. Xidan Station is located at the Xidan intersection of Chang’an Avenue and is one of the busiest junctions in Beijing. Station construction program after more than the election, has initially identified the use of cover excavation construction in the future will