Rock stability analysis and site monitoring of mechanical behavior for
excavation of closely adjacent tunnels |
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| Authors: | LI Li-ping LI Shu-cai ZHANG Qing-song MA Fu-kui |
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| Institution: | 1. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China; 2. The Thirteenth Bureau of China Railway Group, Dalian 116033, China |
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| Abstract: | The mechanical behavior of supporting system for closely adjacent tunnels is the direct indication of its safety in the excavation of diverging tunnels; combined practical work of Miaoya diverging tunnel with small interval in Hu-Rong Expressway, the lateral reinforcement theory of inter-space rock and site monitoring of closely adjacent tunnels are introduced; based on the results, the deformation of surrounding rock and mechanical behavior of supporting system are presented; together with the study on the field experiments for blasting vibration of inter-space rock, the stability of closely adjacent tunnels is evaluated; and the conclusions obtained will devote to the following studies. |
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| Keywords: | diverging tunnel closely adjacent tunnels mechanical behavior of supporting system site monitoring analysis |
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