NDLI: Experimental Research on Mechanical Property of Phyllite Tunnel Surrounding Rock Under Different Moisture State

Content Provider	Springer Nature Link
Author	Hu, Kaifeng Feng, Qian Wang, Xutao
Copyright Year	2016
Abstract	Based on the Tian Cheng tunnel engineering project, the phyllite are collected to analyze the cementation type and internal structure by powder X-ray diffraction and electron microscope through INSTRON-1346 electrohydraulic servo tester. In addition, physical properties test, uniaxial compression test and triaxial compression test under different moisture state to analyzes the mechanical property of phyllite. The results indicate: Poisson ratio of phyllite fluctuates from 0.15 to 0.25 when structural plane’s dip angles fluctuate. There are fewer connections between poisson ratio and the included angle between the structural surface and loading direction. The failure mode of phyllite under dry state are: shear failure and bedding slide occurs under uniaxial pressure; when the dip angle of structural surface is perpendicular to the axial force, under different confining pressure, main failure mode of samples is shear failure. When the confining pressure is 10 MPa, poisson ratio of sample increases and compressive strength and elastic modulus decline when the soaked time increases. The plastic yield behavior occurs before the peak stress and strain and strain softening occurs over the peak. The plastic yield degree and softening degree increase with the increase of the soak time.
Starting Page	303
Ending Page	311
Page Count	9
File Format	PDF
ISSN	09603182
Journal	Geotechnical and Geological Engineering
Volume Number	35
Issue Number	1
e-ISSN	15731529
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-10-18
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Tunnel Phyllite Moisture content Laboratory test Mechanical property Water–rock coupling Geotechnical Engineering & Applied Earth Sciences Hydrogeology Terrestrial Pollution Waste Management/Waste Technology Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Soil Science Geology Architecture Geotechnical Engineering and Engineering Geology

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