The analysis of creep characteristics of the surrounding rock of the carbonaceous rock tunnel based on Singh-Mitchell model

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Luo, Junhui^1 ; Mi, Decai^1 ; Ye, Qiongyao^1 ; Deng, Shengqiang^1 ; Zeng, Fuquan^2 ; Zeng, Yongjun^2

Guangxi Communications Planning Surveying and Designing Institute Co., Ltd, Nanning

530029, China^1

Guangxi Vocational and Technical College of Communications, Nanning, Guangxi

530029, China^2

关键词: Creep characteristics;    Deformation of surrounding rock;    During excavations;    Environmental sensitivities;    Long term stability;    Singh-mitchell models;    Soft surrounding rocks;    Surrounding rock of tunnel;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/3/032033/pdf
DOI  :  10.1088/1755-1315/108/3/032033

来源: IOP

【 摘 要 】

Carbonaceous rock has the characteristics of easy disintegration, softening, swelling and environmental sensitivity, which belongs to soft surrounding rock, and the deformation during excavation and long-term stability of the surrounding rock of carbonaceous rock tunnel are common problems in the construction of carbonaceous rock tunnel. According to the above, the Monitor and measure the displacement, temperature and osmotic pressure of the surrounding carbonaceous rock of the tunnel of Guangxi Hebai highway. Then it based on the obtaining data to study the creep mechanism of surrounding rock using Singh-Mitchell model and predict the deformation of surrounding rock before the tunnel is operation. The results show that the Singh-Mitchell creep model can effectively analyse and predict the deformation development law of surrounding rock of tunnel without considering temperature and osmotic pressure, it can provide reference for the construction of carbonaceous rock tunnel and the measures to prevent and reinforce it..