Open AccessStudy on the surrounding rock parameters deterioration and weathered away into soil in deep buried soft rock tunnel excavated by TBM
Author(s) -
Jinqi Li,
Shugen Ma,
Wenbin Xie,
Shuai Wang,
Gao Liu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/804/2/022089
Subject(s) - geotechnical engineering , excavation , geology , mining engineering , limiting , engineering , mechanical engineering
In the engineering fact that excavation will lead to the deterioration of rock parameters in the excavation damage zone of tunnel, based on a diversion tunnel by simulating the continuous dynamic adjustment process of surrounding rock parameters, the dynamic deterioration law of surrounding rock parameters in deep buried soft rock tunnel is studied. It is considered that the deterioration of surrounding rock parameters in the damaged area of deep buried soft rock tunnel constructed by TBM is a continuous process. After the excavation, the angle of friction φ increases, the cohesive strength C decreases, and the supporting structure of the tunnel have a limiting effect on the deterioration of surrounding rock parameters.