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Civil Engineering     
Effect of water content on failure modes of evapotranspiration landfill cover
KONG Ling-gang, YAO Hong-bo, ZHAN Ling-tong, CHEN Yun-min
1. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
2. Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education, Zhejiang University, Hangzhou 310058,China
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Two approaches were developed for the internal and external failures, respectively, in order to analyze the influence of water content on failure modes of evapotranspiration cover caused by subsidence. The unsaturated characteristics of the soil in the evapotranspiration cover were involved based on the theory of soil arching effect. In the two developed approaches, it was assumed that an arch-shape failure surface is formed above the subsidence in the internal failure mode and two vertical failure planes which emanating from the sides of the subsidence occur in the external failure mode. The proposed approach for the internal failure predicts the arch-shape failure surface and that for the external failure proposes a failure criteria quantified by a safety factor. Centrifugal trapdoor tests for Xi’an loess were conducted. The test data, as well as those of Qiantang river silt reported by other researchers, agreed well with the theoretical results. In the range of water content of the soils used in this study, the height of the failure surface increases with water content and the risk of the external failure increases as the safety factor decreases with water content. Increase of water content of the evapotranspiration cover decreases its stability.

Published: 01 May 2017
CLC:  TU 478  
Cite this article:

KONG Ling-gang, YAO Hong-bo, ZHAN Ling-tong, CHEN Yun-min. Effect of water content on failure modes of evapotranspiration landfill cover. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(5): 847-855.



[1] KOEMER R M,SOONG T Y. Leachate in landfills: the stability issues [J]. Geotextiles & Geomembranes, 2000, 18(18): 293-309.
[2] 柯瀚,陈云敏,谢焰,等.适宜降解条件下填埋场的沉降模型及案例分析[J].岩土工程学报,2009,31(6):  929-938.
KE Han,CHEN Yun-min,XIE Yan,et al. Settlement analysis of landfills under optimal decomposition conditions and case study [J]. Chinese Journal of Geotechnical Engineering,2009,31(6): 929-938.
[3] QIAN X D,KOERNER R M,GRAY D H. Geotechnical aspects of landfill design and construction[M]. New Jersey,USA: Prentice-Hall,Inc., 2002.
[4] CJJ176-2012. 生活垃圾卫生填埋岩土工程技术规范[S].北京:中国建筑工业出版社,2012.
CJJ176-2012. Technical code for geotechnical engineering of municipal solid waste sanitary landfill [S]. Beijing: China Architecture and Building Press, 2012.
[5] 詹良通,焦卫国,孔令刚,等.黄土作为西北地区填埋场覆盖层的可行性及设计厚度分析[J].岩土力学,2014,35(12): 3361-3369.
ZHAN Liang-tong,JIAO Wei-guo,KONG Ling-gang,et al. Feasibility analysis of using loess as soil cover material for landfills in Northwest China and its analysis of design thickness [J]. Rock and Soil Mechanics,2014,35(12): 3361-3369.
[6] 吴子树,张利民,胡定.土拱的形成机理及存在条件的探讨[J].成都科技大学学报,1995(2): 15-19.
WU Zi-shu,ZHANG Li-min,HU Ding. Studies on the mechanism or arching action in loess [J]. Journal of Chengdu University of Science and Technology,1995 (2):15-19.
[7] 贺可强,王滨,万继涛. 枣庄岩溶塌陷形成机理与致塌模型的研究[J]. 岩土力学,2002,23(5): 564-569.
HE Ke-qiang,WANG Bing,WAN Ji-tao. Study on forming mechanism of Zaozhuang karst collapse and collapse model [J]. Rock and Soil Mechanics, 2002, 23(5): 564-574.
[8] VILLARD P,GIRAUD H,GOURC J P. A geosynthetic reinforcement solution to prevent the formation of localized sinkholes [J]. Canadian Geotechnical Journa, 2011, 37(5): 987-999.
[9] 蔺港.局部沉陷诱发腾发型覆盖层破坏的理论与试验研究[D]. 杭州:浙江大学,2014.
LIN Gang. Theoritial and Experimental study of fracture caused by differential subsidence in Evapotranspiration Landfill Cover [D]. Hangzhou: Zhejiang University, 1993.
[10] IGLESIA G R,EINSTEIN H H,WHITMAN R V. Investigation of soil arching with centrifuge tests[J]. Journal of Geotechnical & Geoenvironmental Engineering,2014,140(2): 248-256.
[11] TERZAGHI K. Theoretical soil mechanics[M]. 4th ed,New York: John Wiley and Sons, Inc,1943.
[12] 刘丹珠,张家发,李少龙,等.基于土拱理论的土体坍塌机理研究[J].长江科学院院报,2011,28(5): 35-41.
LIU Dan-zhu,ZHANG Jia-fa,LI Shao-long,et al. Mechanism of soil collapse based on soil arching theory [J]. Journal of Yangtze River Scientific Research Institute,2011,28(5): 35-41.
[13] BERBAUMER A. Die dimensionerung des tunnelmauerwerks[M]. Leipzig: Engelmann,1913.
[14] 胡敏云,夏永承,高渠清.无锚撑桩排式支护护壁桩侧土压力计算方法[J].岩石力学与工程学报,2000,19(4): 517-521.
HU Min-yun,XIA Yong-cheng,GAO Qu-qing. Calculating method of earth pressure against Rretaining piles of pilerow retaining structure [J]. Chinese Journal of Rock Mechanics and Engineering,2000,19(4): 517-521.
[15] MARSTON A,ANDERSON A O. The theory of loads on pipes in ditches and tests of cement and clay drain tile and sewer pipe[R]. IA: Iowa Engineering Experiment Station, Iowa State College, 1913.
[16] 蔺港,孔令刚,詹良通,等.基于太沙基土拱效应考虑基质吸力影响的松动土压力计算模型[J].岩土力学,2015,36(7): 2095-2104.
LIN Gang, KONG Ling-gang, ZHAN Lang-tong,et al. An analytical model for loosening earth pressure considering matric suction based on Terzaghi soil arch effect [J]. Rock and Soil Mechanics,2015,36(7):2095-2104.
[17] 贾海莉,王成华,李江洪.关于土拱效应的几个问题[J].西南交通大学学报,2003,38(4): 398-402.
JIA Hai-li,WANG Cheng-hua,LI Jiang-hong. Discussion on some Issues in theory of soil arch [J]. Journal of Southwest Jiaotongs University,2003,38(4):398-402.
[18] 蔡美峰.岩石力学与工程[M].北京:科学出版社,2002, 330-333.
[19] YAMAMOTO K,LYAMIN A V,WILSON D W,et al. Stability of dual circular tunnels in cohesive-frictional soil subjected to surcharge loading[J]. Canadian Geotechnical Journal, 2013, 50(12): 41-54.
[20] ABBO A J,WILSON D W,SLOAN S W,et al. Undrained stability of wide rectangular tunnels [J]. Computers & Geotechnics,2013,53(3) :46-59.
[21] IGLESIA G R. Trapdoor experiments on the centrifuge,a study of arching in geomaterials and similitude in geotechnical models[D]. MA: Dept of Civil Engineering,MIT,1991.
[22] 申春妮,方祥位,王和文,等.吸力、含水率和干密度对重塑非饱和土抗剪强度影响研究[J].岩土力学,2009,30(5): 1347-1351.
SHEN Chun-ni,FANG Xiang-wei,WANG He-wen,et al. Research on effects of suction,water content and dry density on shear strength of remolded unsaturated soils[J]. Rock and Soil Mechanics,2009,30(5):1347-1351.
[23] 林鸿州,李广信,于玉贞,等.基质吸力对非饱和土抗剪强度的影响[J].岩土力学,2007,28(9):1931-1936.
LIN Hong-zhou,LI Guang-xin,YU Yu-zhen,et al. Influence of matric suction on shear strength behavior of unsaturated soils [J]. Rock and Soil Mechanics,2007,28(9):1931-1336.
[24] 龚壁卫.非饱和击实膨胀土总应力强度探讨[J].长江科学院院报,1998(3):40-42.
GONG Bi-wei. Discussion on shear strength of total stress of unsaturated compacted expansive soil[J]. Journal of Yangtze River Scientific Research Institute,1998(3):40-42.
[25] KRYNINE D P. Discussion of ‘Stability and stiffness of cellular cofferdams’ by Karl Terzaghi[J]. Transactions of the American Society of Civil Engineers,1945,110(1): 1120-1186.
[26] GB/T50145-2007. 土的工程分类标准[S].北京:中国计划出版社,2008.
GB/T50145-2007. Standard for engineering classification of soil [S]. Beijing: China Planning Press,2008.
[27] GB/T50123-1999.土工试验方法标准[S].北京:中国计划出版社,1999.
GB/T50123-1999. Standard for soil test method[S]. Beijing: China Planning Press,1999.

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