Research on Key Points of Geotechnical Engineering Investigation and Support System Design for Underground Buildings
In order to further clarify the design method of the support structure of underground buildings and improve the design quality,this paper takes the actual project as the research object,and deeply analyzes the key contents of the investigation of underground buildings,the quality evaluation of rock and soil mass,the design and accounting of the support system.It is concluded that the Norwegian tunnel method is recommended to strengthen the supporting structure of this project,and some parameters of the supporting structure are preliminarily given,in which the roof and wall of the tunnel adopt the anchor rod with a diameter of 25 mm and a length of 7.0 m.The thickness of steel fiber concrete on the roof and wall of the tunnel is 120 mm and 100 mm respectively.The research results of this paper have certain reference significance for the subsequent construction of this project and the investigation and design of related underground buildings.
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