Abstract
The application of mine method shallow burying and undercutting method in subway and tunnel engineering is becoming more and more significant, but shallow burying and undercutting method also has its own limitations: the shallow burying and undercutting method can easily cause the subsidence of nearby surface, there is a security threat to surrounding buildings, the instability of the tunnel inside, easy to cause the collapse of construction tunnels, endangering construction safety, so ensuring construction safety becomes the key to the project. By combining the examples of the Heyi River Tunnel in Quzhou, the project focuses on the safety measures of tunnel surrounding rock, and simulates tunnel excavation with BIM technology.
Highlights
With the development of economy, people are more and more perfect in the construction of infrastructure, and the construction of infrastructure is becoming more and more complicated
The shallow burying and undercutting method is convenient for the operation of the used machines and has low cost requirements, the cost of construction is greatly reduced, but the shallow burial method has its own limitations: the shallow burying and undercutting method is likely to cause the settlement of the nearby ground surface to cause the instability of the tunnel and the collapse of the construction tunnel, which is dangerous to the construction safety
Yi Xiaoming[1]etc. conducted a mechanical analysis on the overall subsidence of the overlying stratum of the shallow buried tunnel through the analysis of the onsite monitoring data of urban tunnel construction, and believed that the overall subsidence and collapse of the overlying stratum of the tunnel was caused by the surrounding area
Summary
With the development of economy, people are more and more perfect in the construction of infrastructure, and the construction of infrastructure is becoming more and more complicated. Many scholars have conducted researches on the limitations of the shallow burying method in design and construction. Conducted a mechanical analysis on the overall subsidence of the overlying stratum of the shallow buried tunnel through the analysis of the onsite monitoring data of urban tunnel construction, and believed that the overall subsidence and collapse of the overlying stratum of the tunnel was caused by the surrounding area. Used the theory of random medium method to study the prediction of surface movement and deformation caused by the construction of large-section shallow buried tunnels, and obtained relevant prediction formulas for surface movement and deformation. Zhou Shunhua[3] took the tunnel Based on in-situ observations and indoor centrifugal model tests, the scaffolding principle of the pipe roof method in the construction of shallow burial excavation in soft ground is studied. Because the shallow burying and undercutting tunnels are located under the Qujiang River, the The safety of tunnels digging across the river needs further study
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