In Situ Test and Mechanical Analysis of Multi-Arch Tunnel with Large Section in Soft and Weak Rock Mass

Abstract:

According to the characteristic of multi-arch highway tunnel,based on a practice engineering, the monitoring work was consisted of four sections:the displacement of surrounding rock; such as crown settlement, displacement of the ground, displacement of inner surrounding rock; that of stress and stain of support structure; that of force in middle-wall. In course of construction,monitoring data was analyzed in time.Structural timbering parameters were modified in response to abnormal monitoring data in order to guarantee safety.the testing results of the safety monitoring system are satisfactory, which serves as a symbol of our research work. Thus, our engineering practice has proved the applicability and feasibility of the safety monitoring and information construction methods.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 1262-1265
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.1262
• Online since: May 2011
• Authors: Tong Liu, Zi Chao Dong, Hai Yong Yang
• Keywords: In Situ Test, Multi-Arch Tunnel, Safety Construction Technology, Soft and Weak Surrounding Rock

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