{"title":"Field test study on large deformation control of strongly weathered carbonaceous slate tunnel in high geostress","authors":"G. Cui, Yong Xiong, D. Wang","doi":"10.1680/jtran.23.00001","DOIUrl":null,"url":null,"abstract":"The problems of large deformation often occur in strongly weathered carbonaceous slate tunnels with high geostress. In order to control the large deformation in the process of tunnel construction, the advanced drilling measure and the advanced pilot tunnel measure are proposed and relevant field tests are carried out to verify their results. Compared with conventional support measure, the advanced pilot tunnel measure has better control effect on horizontal convergence and vault settlement, which are reduced by 29.70% and 75.81% respectively. What's more, the advanced drilling measures has more advantages in the control of the maximum of surrounding rock stress and the maximum of steel frame stress, which are reduced by 77.44% and 23.12% respectively. The results show that the large deformation of strongly weathered carbonaceous slate tunnel in high geostress cannot be effectively solved by the conventional support measure, but the two advanced stress control measures can effectively reduce the deformation of the surrounding rock of the tunnel, and decrease the stress of the tunnel steel frame and surrounding rock.","PeriodicalId":49670,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Transport","volume":"25 1","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institution of Civil Engineers-Transport","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jtran.23.00001","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0
Abstract
The problems of large deformation often occur in strongly weathered carbonaceous slate tunnels with high geostress. In order to control the large deformation in the process of tunnel construction, the advanced drilling measure and the advanced pilot tunnel measure are proposed and relevant field tests are carried out to verify their results. Compared with conventional support measure, the advanced pilot tunnel measure has better control effect on horizontal convergence and vault settlement, which are reduced by 29.70% and 75.81% respectively. What's more, the advanced drilling measures has more advantages in the control of the maximum of surrounding rock stress and the maximum of steel frame stress, which are reduced by 77.44% and 23.12% respectively. The results show that the large deformation of strongly weathered carbonaceous slate tunnel in high geostress cannot be effectively solved by the conventional support measure, but the two advanced stress control measures can effectively reduce the deformation of the surrounding rock of the tunnel, and decrease the stress of the tunnel steel frame and surrounding rock.
期刊介绍：
Transport is essential reading for those needing information on civil engineering developments across all areas of transport. This journal covers all aspects of planning, design, construction, maintenance and project management for the movement of goods and people.
Specific topics covered include: transport planning and policy, construction of infrastructure projects, traffic management, airports and highway pavement maintenance and performance and the economic and environmental aspects of urban and inter-urban transportation systems.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
