caa a22 4500 605454736 CHVBK 20210128100208.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10064-014-0647-z doi (NATIONALLICENCE)springer-10.1007/s10064-014-0647-z Experimental and numerical analysis of the time-dependent behaviour of argillaceous red sandstone under high in situ stress [Elektronische Daten] [H. Tian, W. Chen, D. Yang, Z. Gong] Understanding the time-dependent behaviour of soft rock under high in situ stress is essential to the evaluation of the long-term stability of the deep-buried tunnels in expressways or coal mines. This paper presents an experimental and numerical study of the time-dependent behaviour of argillaceous red sandstone under high in situ stress. First, several triaxial creep tests for strongly and moderately weathered specimens under the confining pressure of 20-40MPa were conducted, and the variation of time-dependent damage with time was obtained by investigating the evolution of volumetric strain during the creep process. The test results verify that creep damage has a similar effect on both axial strain and lateral strain of argillaceous red sandstone. Second, a creep damage model that is able to describe nonlinear variation in creep strain and volume expansion for sandstone under high in situ stress was established. Last, the parameters of the proposed model were determined by a back analysis method. The results of back analysis show that the model is able to describe the nonlinear variation in creep strain and volume expansion during the creep process very well. Springer-Verlag Berlin Heidelberg, 2014 Triaxial creep tests nationallicence Argillaceous red sandstone nationallicence High in situ stress nationallicence Creep damage nationallicence Tian H. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 430071, Wuhan, Hubei, China aut Chen W. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 430071, Wuhan, Hubei, China aut Yang D. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 430071, Wuhan, Hubei, China aut Gong Z. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 430071, Wuhan, Hubei, China aut Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/2(2015-05-01), 567-575 1435-9529 74:2<567 2015 74 10064 https://doi.org/10.1007/s10064-014-0647-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10064-014-0647-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tian H. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 430071, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Chen W. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 430071, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Yang D. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 430071, Wuhan, Hubei, China aut NATIONALLICENCE 700 1- Gong Z. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 430071, Wuhan, Hubei, China aut NATIONALLICENCE 773 0- Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/2(2015-05-01), 567-575 1435-9529 74:2<567 2015 74 10064