| Paleoclimate and Environment Evolution |
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| Experimental Study on Rheological Properties of Neogene Red-bed Soft Rock |
| LIU Xiao-wei1,2, CHEN Wen-wu1,2, ZHANG Fan-yu1,2, YUAN Peng-bo1,2, HAN Wen-feng1,3 |
1.Ministry of Education Key Laboratory of Mechanics on Disaster and Environment in Western China, Lanzhou University, Lanzhou 730000, China;
2.School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China;
3.Department of Civil Engineering, Tianjin College of Urban Construction, Tianjin 300381, China |
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Abstract Rheological property is a major controlling factor for rock mass stability. By a set of rheological experiments, the creep and relaxation curves of Neogene red-bed soft rock are obtained, whose variation process can be classified as three change stages. Compared with argillaceous siltstone, Neogene silty mudstone has lower strength, larger creep and longer time to stabilization. Based on scientific analysis and comparative study, rheological curves of red-bed soft rock are in accord with Burgers rheological model. Using Marquardt algorithm, the rheological parameters of red-bed soft rock under different test conditions were obtained. The rheological parameters of red-bed soft rock are far lower than those of the hard rock, which indicates that Neogene argillaceous siltstone and silty mudstone have remarkable rheological property. All these parameters can be applied to characterize the rheological properties of red-bed soft rock.
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Received: 10 April 2012
Published: 20 September 2012
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| [1]程强,寇小兵,黄绍槟,等.中国红层的分布及地质环境特征[J].工程地质学报,2004,12（01）:34-40.[2]李志文,李保生,孙丽,等.中国东南沿海老红砂的研究现状与展望[J].中国沙漠,2011,31（1）:49-57.[3]朱丽东,周尚哲,叶玮,等.网纹红土稀土元素地球化学特征的初步研究[J].中国沙漠,2007,27（2）:194-200.[4]杜恕环,李保生,温小浩,等.岭南东江流域MIS2阶段红色沙质沉积物粒度分布特征分析[J].中国沙漠,2007,27（5）:771-774.[5]张荷生,崔振卿.甘肃省张掖丹霞与彩色丘陵地貌的形成与景观特征[J].中国沙漠,2007,27（6）:942-945.[6]毛龙江,刘晓燕,许叶华.南京江北地区下蜀黄土粒度分形与全新世环境演变[J].中国沙漠,2006,26（2）:264-267.[7]Griggs D T.Creep of rocks[J].Journal of the Geological Society,1939,47:225-251.[8]Ito H,Sasajima S.A ten year creep experiment on small rock specimens[J].International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts,1987,24（2）:113-121.[9]Haupt M.A constitutive law for rock salt based on creep and relaxation tests[J].Rock Mechanics and Rock Engineering.1991,24:179-206.[10]Okubo S,Nishimatsu Y,Fukui K.Complete creep curves under uniaxial compression[J].International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts,1991,28（1）:77-82.[11]孙钧,章旭昌.软弱断层流变对地下洞室围岩力学效应的黏弹塑性分析[J].岩土工程学报,1987,9（6）:16-26.[12]宋德彰,孙钧.岩质材料非线性流变属性及其力学模型[J].同济大学学报,1991,19（4）:395-401.[13]刘保国,孙钧.岩体流变本构模型的辨识及其应用[J].北方交通大学学报,1998,22（4）:10-14.[14]李永盛.单轴压缩条件下四种岩石的蠕变和松弛试验研究[J].岩石力学与工程学报,1995,14（1）:39-47.[15]赵法锁,张伯友,彭建兵,等.仁义河特大桥南桥台边坡软岩流变性研究[J].岩石力学与工程学报,2002,21（10）:1527-1532.[16]杨松林,张建民,黄启平.节理岩体蠕变特性研究[J].岩土力学,2004,25（8）:1225-1228.[17]袁海平,曹平,万文,等.分级加卸载条件下软弱复杂矿岩蠕变规律研究[J].岩石力学与工程学报,2006,25（8）:1575-1581.[18]朱合华,叶斌.饱水状态下隧道围岩蠕变力学性质的试验研究[J].岩石力学与工程学报,2002,21(12):1791-1796.[19]李铀,朱维申,白世伟,等.风干与饱水状态的花岗岩单轴流变特性试验研究[J].岩石力学与工程学报,2003,22（10）:1673-1677.[20]孙钧.岩土材料流变及其工程应用[M].北京:中国建筑工业出版社,1999.[21]谢和平,陈忠辉.岩石力学[M].北京:科学出版社,2004:65.[22]周维垣.高等岩石力学[M].北京:水利电力出版社,1990.[23]夏才初,孙钧.蠕变试验中流变模型辨识及参数确定[J].同济大学学报,1996,24（5）:498-503.[24]郑永来,周澄,夏颂佑.岩土材料黏弹性连续损伤本构模型探讨[J].河海大学学报,1997,25（2）:114-116.[25]王思敬,杨志法,傅冰骏.中国岩石力学与工程——世纪成就[M].南京:河海大学出版社,2004.[26]刘小伟,谌文武,韩文峰.浅埋红层软岩隧洞围岩变形特征试验研究[J].冰川冻土,2007,29（6）:992-996. |
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2012, Vol. 32 
