Model Test Research of the Influences of Rock-Fall Impaction on Deformation of the Cut-and-Cover Tunnel Structure

Abstract:

On conditions of different weight，height, shape and the property of slope surface, the tunnel portal structure’s deformation evoked by rock-fall impaction has been researched in laboratory by using a 1/30 scale similar model. The study shows that there is a simple linear relationship between the structure’s deformation , the rock weight and the rockfall height when the slope gradient is 1:0.5 and the slope surface is slippery and the multiple linear relationship between the structure’s deformation , the rock weight and the rockfall height has been obtained. Effect of the shape of the rockfall and the property of slope surface on structure’s deformation has been comparative analyzed.

• Periodical: Advanced Materials Research (Volumes 368-373)
• Pages: 2716-2721
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.368-373.2716
• Online since: October 2011
• Authors: Yu Suo Wang, Ju Mei Zhao, Jian Hui Tang, Guo Qing Li
• Keywords: Cut-and-Cover Tunnel, Deformation, Regression Analysis, Rock-Fall Impaction

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