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《Engineering Journal of Wuhan University》 2010-01
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Effect of shrub on stability of loess slope

LIU Chuanshun1,ZHENG Yong1,GUAN Honglin2,YE Wenhua2(1.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China;2.Hubei Water Resources Research Institute,Wuhan 430070,China)  
Vegetation contributes to slope stability through reinforcement of the soil,dissipation of pore pressures caused by root water uptake,and increasing the shear strength by matric suction.In this investigation,laboratory shear tests of unsaturated loess samples with shrub roots were conducted;and a shear strength model of the root permeated soil was established via fitting the test data,which indicates the shear strength is the function of root density and soil water content.Furthermore,a two-dimensional model of root water uptake was developed;and the numerical modeling of shrub root water uptake from a canal slope was demonstrated.Based on the dynamical distribution of soil water in canal slope and the shear strength model of the root permeated soil,the stability factors of the vegetated canal slope in different hydrological stages were computed.Compared the stability factors of vegetated slope with that of bared slope at same moments,it can be seen that the vegetation obviously strengthens the canal slope by reinforcing the soil and uptaking the soil moisture.
【Fund】: 国家自然科学基金项目(编号:50578127);; 教育部留学回国人员科研启动基金(编号:2008-890)
【CateGory Index】: TU434
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 LIU Chuan-shun~1,ZHAO Hui~1,LUO Ji-wu~2(1.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China;2.Central and Southern China Municipal Engineering Design & Research Institute,Wuhan 430010,China);Experiment and Numerical Simulation of Percolation Control Using Evapotranspirative Landfill Cover System[J];Environmental Science;2009-01
2 LIU Chuanshun,WANG Wei,LIU Xiangqing (State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,Hubei 430072,China);A MACROSCOPIC WATER UPTAKE MODEL OF TREE ROOTS AND ITS VERIFICATION[J];Chinese Journal of Rock Mechanics and Engineering;2007-S2
【Secondary Citations】
Chinese Journal Full-text Database 3 Hits
1 WANG Kang,LIU Chuan-shun,WANG Fu-qing,TANG You-sheng(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China);Field Test and Evaluation of Landfill Performance and Structure with Evapotranspiration Cover[J];Environmental Science;2007-10
2 Liu Chuanshun Shen Rongkai Luo Huaibin Liang Yongda Li Anshi Chen Zhuangli;Dynamic Equilibrium Method for Estimating the Evapotranspiration of Fruit Trees[J];Journal of Wuhan University of Hydraulic and Electric Engineering;1991-06
3 Liu Chuanshun;USING THE DATES OF SOIL WATER POTENTIAL TO ESTIMATE THE WATER UPTAKE BY TWO-DIMENSIONAL ROOT SYSTEM[J];;1993-02
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