FANG Xinghua,LIU Shu,CHEN Wei,et al.Seasonal Characteristics of Surrounding Rock Deformation in Soft Rock Tunnel and Prevention Measures[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(06):1331-1338.
FANG Xinghua,LIU Shu,CHEN Wei,et al.Seasonal Characteristics of Surrounding Rock Deformation in Soft Rock Tunnel and Prevention Measures[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(06):1331-1338. DOI: 10.13409/j.cnki.jdpme.201907023.
Seasonal Characteristics of Surrounding Rock Deformation in Soft Rock Tunnel and Prevention Measures
This paper analyzed the relationship between the surrounding rock deformation of a carbonaceous slate tunnel and the seasonal rainfall, based on the field monitoring results. To propose the prevention and control measures for large deformation in the surrounding rock, the difference of surrounding rock deformation during tunnel construction between the dry season and the rainy season was studied. The results show that the surrounding rock deformation has certain seasonal characteristics. Compared with the dry season, the deformation in the rainy season is larger and the deformation rate is faster. Besides, surrounding rock conditions, groundwater and excavation are the main factors that contribute to large seasonal deformation of surrounding rock. Finally, based on the above three main influencing factors, measures for deformation prevention and control of surrounding rock in Walibie tunnel are proposed. The research can provide guides for subsequent construction of the tunnel.
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