莫斯科地下鉄道建筑者們最近創造了一种新的建筑方法——开敞法,这种方法此較封閉法(地下施工法)可大量降低造价和加快施工速度。 施工次序是首先在200米長工作段上应用一台3-752或3-1004單斗掘土机掘槽,其后应用推土机平整地槽,在做好基础混凝土垫层及防水层之后 Moscow underground corps builders recently created a new building method - the open method, a more closed method (underground construction method) that can significantly reduce costs and speed up construction. The construction sequence is to first apply a 3-752 or 3-1004 single bucket excavator on a 200-meter long section of work, and then use a bulldozer to level the ground trench. After making the foundation concrete cushion and waterproof layer