| In recent years,with the continuous development of China’s economy,city population growth,traffic congestion occurred in each big city,city to sustainable development must solve the traffic problems,and the use of underground space is an effective means to solve this problem.More and more large projects in our country,and the subject of deep foundation pit engineering is constantly developed,and there are a lot of related engineering technology and theory.In this paper,the construction of the road station of Lanzhou Rail Transit Line 1 is the engineering background,the protection of the pipeline around the metro station,the construction scheme and construction technology of special parts are studied.The main research contents are as follows:1.The construction method of the underground excavation red yarn sandstone subway station is studied,analyzed the pipeline protection,building envelope,support system of precipitation and water technology,and so on.2.The characteristics of red sandstone are combined to control the red yarn sandstone.3.Cut red yarn rock subway station built around the building(structure)on-site monitoring data analysis,according to the monitoring results of construction,ensure the safety of the project,it has very important practical significance for similar engineering. |