1. Analysis of Surrounding Rock Stability of Tunnel and Shotcrete Anchor Support Design and Construction: A Case Study of Jiaoxiling Tunnel.
- Author
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GONG Shu-hui, YU Xi, CHEN Guang-hui, and YU Jiang-hua
- Subjects
ROCK analysis ,SHOTCRETE ,TUNNELS ,CONSTRUCTION projects ,ENGINEERING design ,LONGWALL mining - Abstract
The stability analysis of tunnel surrounding rock plays an important role in both engineering design and construction. Jiaoxiling Tunnel is the controlling project of water supply project of Jiaohua Reservoir in Hunan Province. It has the characteristics of complex geological conditions, passing through multiple fault zones, shallow buried sections and broken zones, and rich water layers. Based on the analysis of the engineering geology and hydrogeology of Jiaoxiling Tunnel, this case adopts the method of combining axial strain theory with practice to predict the limit height of spalling and caving of surrounding rock of the tunnel, and then determines the support design of each section of the tunnel. The results show that it is better to determine the thickness of shotcrete and the size of anchor rod according to the type of surrounding rock, and to determine the grouting measures in combination with the groundwater condition. The case results are helpful to provide scientific reference for the design and construction of similar projects. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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