Abstract
The stress path division of soil strata surrounding the excavation tunnel was obtained by numerical simulation, and based on this, the impact variation of different stress paths to the surrounding soil strength was gotten by laboratory triaxial test. The results show that tunnel excavation can result in four different stress path divisions of the soil strata, which have deferent failure to the tunnel stability. Deferent paths have respective failure forms, and the failure strengths are basically the same when the forms are identical (extrusion failure or compression failure) even if the paths are different, but to deferent forms, the failure strength are deferent, generally speaking, the strength of extrusion failure will be 10% ~25% lower than that of compression failure. These researches can provide strong basis for accurately study about the influence of engineering property of environmental soil strata.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
