Calculation and optimization of slope reinforcement at tunnel entrances—taking manyanpo tunnel as an example

Frontiers in Earth Science

Earth Science

Junzhi Chen¹  Mingqing Chen¹  Jia Song¹  Chunfang Ren² 

[1] Faculty of Land and Resources, Kunming University of Science and Technology, Kunming, China;null;

关键词: slope support optimization;    orthogonal test;    bending moment of frame beam;    FLAC3D;    support parameter calculation;   

DOI  :  10.3389/feart.2023.1138018

 received in 2023-01-05, accepted in 2023-02-15,  发布年份 2023

来源: Frontiers

【 摘 要 】

Slope reinforcement is a common method to solve the problem of slope instability, and reasonable optimization of the corresponding support parameters is crucial for practical engineering. In this paper, the slope support method of Manyanpo tunnel entrance section is taken as an example, and the theoretical calculation method is used to optimize the project cost. Combined with the orthogonal test, the sensitivity analysis of the influencing factors of the stability of the support system and the selection of the optimal parameter combination scheme are carried out. Then, based on flac3d software, the optimization scheme is compared with the original design scheme. The results show that the safety factor of the optimized scheme is increased from 1.32 to 1.43 compared with the actual project. The optimized support parameters have better control effect on the displacement of the slope, especially in the Z direction. The optimized parameters have better support effect. This study can provide reference for the optimization design of slope engineering support.

【 授权许可】

Unknown   
Copyright © 2023 Chen, Chen, Ren and Song.