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| Causes of Shallow Landslides of Expansive Soil Slopes |
| XIAO Jie, TONG Chao, YANG He-ping |
| Research Institute of Special Soil Engineering, Changsha University of Science and Technology, Changsha Hunan 410114, China |
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Abstract Shallow landslides often occur in the vast majority of expansive soil cutting slopes during or after rainfall, resulting in newly-built highway traffic disruption, ecological environment destruction along roads, and high costs required for repair. The actual causes of shallow landslides are still unclear. Therefore, analyses of test data are used to study the attenuation law of the shear strength of expansive soil under the dry-wet cycle conditions. The shear strength of surface soil was found to have a nonlinear property resulting from the natural expansion soil. In addition, shallow landslides of expansive soil slopes in dry-wet cycles are analyzed. The serious attenuation of cohesion was found to be the main cause of shallow landslides in expansive soil slopes. Therefore, the measured nonlinear strength parameters of soil samples should be applied to analyze the stability of expansive soil slope, the results of which can be consistent with the calculation result of actual conditions.
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Received: 19 February 2016
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| Fund:Supported by the National Natural Science Foundation of China (No.51478054; No.51608053); the Scientific Research Fund of Hunan Provincial Education Department (No.15C0043); the Guangxi Communications Science and Technology Projects (No.2011-20);and the Natural Science Foundation of Hunan Province (No.2017jj3335) |
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Corresponding Authors:
XIAO Jie,E-mail address:xiaojie324@sina.com
E-mail: xiaojie324@sina.com
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[1] LIAO Shi-wen. Expansive Soil and Railway Engineering[M]. Beijing:China Railway Publishing House, 1984. (in Chinese)
[2] LI Sheng-lin, QIN Su-juan, BO Zun-zhao, et al. Study on Engineering Geology of Expansive Soil in China[M]. Nanjing:Jiangsu Science and Technology Publishing House, 1992. (in Chinese)
[3] QU Yong-xin, ZHANG Yong-shuang, YANG Jun-feng, et al. Theory and Practice of Engineering Geological Classification for Expansive Rock and Soil in China[C]//Fifty Years of Chinese Engineering Geology. Beijing:Seismological Press, 2000:140-164. (in Chinese)
[4] YANHG He-ping, LIN Li-ping, XIAO Jie, et al. Improvement Effect of Expansive Soil by Soil-water Characteristic Curve[J]. Journal of Highway and Transportation Research and Development, 2011, 28(10):1-6. (in Chinese)
[5] YANG He-ping, ZHENG Peng. Geological Investigation and Reflection on the Expansive Soil in Nanning-Youyiguan Highway[J]. Journal of Changsha University of Science and Technology:Natural Science Edition, 2004, 1(1):14-19. (in Chinese)
[6] WANG Wen-sheng, XIE Yong-li, LIANG Jun-lin. Classification of Expansive Clay Slope on Road Cutting[J]. Journal of Chang'an University:Natural Science Edition, 2005, 25(1):20-24. (in Chinese)
[7] BAO Cheng-gang, GUO Xi-ling, CHENG Zhan-lin, et al. Study on Some Geotechnical Problems on the South To North Water Diversion Project (Middle Line)[C]//Ninth Soil Mechanics and Geotechnical Engineering Conference of Chinese Civil Engineering Society (Volume 1). Beijing:Chinese Civil Engineering Society, 2003:120-132. (in Chinese)
[8] WANG Zhao, GONG Bi-wei, BAO Cheng-gang. Measurement of Matrix Suction of Expansive Soil Slope in Northern Hubei[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(1):64-67. (in Chinese)
[9] ZHENG Jian-long, YANG He-ping. Expansive Soil Engineering of Highway[M]. Beijing:China Communications Press, 2009. (in Chinese)
[10] YIN Zong-ze, XU Bin. Slope Stability of Expansive Soil under Fissure Influence[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(3):454-459. (in Chinese)
[11] XIAO Jie, YANG He-ping, WANG Xing-zheng, et al. Analysis of Nonlinear Characteristics of Shear Strength of Nanning Expansive Soil and Its Influencing Factors[J]. China Journal of Highway and Transport, 2014, 27(10):1-8. (in Chinese)
[12] XIAO Jie, YANG He-ping, FU Hao, et al. Comparison Model Test on Effect of Geogrid Reinforcement for Expansive Soil Slope[J]. China Journal of Highway and Transport, 2014, 27(7):24-31. (in Chinese)
[13] LIU Te-hong. Problems Related to Expansive Soil in Engineering Constructions[M]. Beijing:China Architecture and Building Press, 1997. (in Chinese) |
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2017, Vol. 11 
