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- W2970903685 abstract "Recently, twin-tunnel is often designed in the aspects of disaster prevention and economical reasons. However, the design cases and the studies are relatively insufficient. By the twin-tunnel excavation, deviate stresses of pillar between tunnels are increased and the increased stresses induce the instability of the twin-tunnel. In this study, numerical analyses about the twin-tunnel behaviour were conducted with varying ground strength, width of pillar and depth of earth cover and a series of regression analyses were carried out by using the results of numerical analyses for the twin-tunnel. Based on the numerical analyses, an estimation method of derived stresses is suggested through the regression analyses. Also, based on the results of regression analyses, an quantitative estimation method considering the reinforcement effects is also suggested. Then various parametric studies were conducted to be considered the reinforcement type and various design parameters. Finally, the efficiency of the suggested method based on the Hoek-Brown Failure Criterion is verified through the results of parametric studies." @default.
- W2970903685 created "2019-09-05" @default.
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- W2970903685 date "2009-01-01" @default.
- W2970903685 modified "2023-09-26" @default.
- W2970903685 title "A Study on the Stability Estimation Procedure for Reinforced Pillar of Twin Tunnel" @default.
- W2970903685 hasPublicationYear "2009" @default.
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