全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

不同应力水平下红砂岩短时蠕变声发射特征

DOI: 10.3969/j.issn.1005-3026.2015.09.028, PP. 1347-1352

Keywords: 红砂岩,分级加卸载,应力水平,短时蠕变,声发射

Full-Text   Cite this paper   Add to My Lib

Abstract:

为认识岩石蠕变过程中的声发射特征,进行了短时蠕变声发射试验,研究了红砂岩在不同应力水平下的声发射特征.试验结果表明:在减速蠕变至等速蠕变过程中,声发射事件率与能率随时间的增大而减小,并且减小的幅度随着应力水平的增大而减小;当加载应力约为峰值应力的40%~60%时,声发射振幅随时间的增大而减小;当加载应力约为峰值应力的70%~80%时,声发射振幅保持相对稳定.在加速蠕变阶段,声发射振幅发生跃迁的频率显著增大,而声发射事件率与能率在加速蠕变的中后期开始增大.因此,可根据不同应力水平下的声发射特征,对红砂岩不同蠕变阶段进行辨别.

References

[1]  Gasc-Barbier M,Chanchole S,Bérest P.Creep behavior of bure clayey rock[J].Applied Clay Science,2004,26(1/2/3/4):449-458.
[2]  Heap M J,Baud P,Meredith P G,et al.Brittle creep in basalt and its application to time-dependent volcano deformation[J].Earth and Planetary Science Letters,2011,307(1/2):71-82.
[3]  Brantut N,Heap M J,Meredith P G,et al.Time-dependent cracking and brittle creep in crustal rocks:a review[J].Journal of Structural Geology,2013,25:17-43.
[4]  Fujii Y,Kiyama T,Ishijima Y,et al.Circumferential strain behavior during creep tests of brittle rocks[J].International Journal of Rock Mechanics and Mining Sciences,1999,36(3):323-337.
[5]  Kranz R L,Harris W J,Carter N L.Static fatigue of granite at 200°C[J].Geophysical Research Letters,1982,9(1):1-4.
[6]  Baud P,Zhu W L,Wong T F.Failure mode and weakening effect of water on sandstone[J].Journal of Geophysical Research,2000,105(B7):16371–16389.
[7]  刘保国,崔少东.泥岩蠕变损伤试验研究[J].岩石力学与工程学报,2010,29(10):2127-2133.(Liu Bao-guo,Cui Shao-dong.Experimental study of creep damage of mudstone[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(10):2127-2133.)
[8]  Heap M J,Baud P,Meredith P G,et al.Brittle creep in basalt and its application to time-dependent volcano deformation[J].Earth and Planetary Science Letters,2011,307(1/2):71-82.
[9]  陈文玲,赵法锁,弓虎军.三轴蠕变试验中云母石英片岩蠕变参数的研究[J].岩石力学与工程学报,2011,30(sup 1):2810-2816.(Chen Wen-ling,Zhao Fa-suo,Gong Hu-jun.Study of creep parameters of mica-quartzose schist during triaxial creep test[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(sup1):2810-2816.)
[10]  夏才初,王晓东,许崇帮,等.用统一流变力学模型理论辨识流变模型的方法和实例[J].岩石力学与工程学报,2008,27(8):1594-1600.(Xia Cai-chu,Wang Xiao-dong,Xu Chong-bang,et al.Method to identify rheological models by unified rheological model theory and case study[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(8):1594-1600.)
[11]  Chmel A,Shcherbakov I.A comparative acoustic emission study of compression and impact fracture in granite[J].International Journal of Rock Mechanics and Mining Sciences,2013,64(4):56-59.
[12]  Xie H P,Liu J F,Ju Y,et al.Fractal property of spatial distribution of acoustic emissions during the failure process of bedded rock salt[J].International Journal of Rock Mechanics and Mining Sciences,2011,48(8):1344-1351.
[13]  Lei X L,Kusunose K,Satoh T,et al.The hierarchical rupture process of a fault:an experimental study[J].Physics of the Earth and Planetary Interiors,2003,137(1/2/3/4):213-228.
[14]  李元辉,刘建坡,赵兴东,等.岩石破裂过程中的声发射b值及分形特征研究[J].岩土力学,2009,30(9):2559-2563.(Li Yuan-hui,Liu Jian-po,Zhao Xing-dong,et al.Study on b-value and fractal dimension of acoustic emission during rock failure process [J].Rock and Soil Mechanics,2009,30(9):2559-2563.)
[15]  孙钧.岩石流变力学及其工程应用研究的若干进展[J].岩石力学与工程学报,2007,26(6):1081-1106.(Sun Jun.Rock rheological mechanics and its advance in engineering applications[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(6):1081-1106.)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133