Content of Geotechnical Engineering in our journal

Published in last 1 year |  In last 2 years |  In last 3 years |  All Please wait a minute... For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails Select Analytical Solution of Matric Suction for Advanced-Peak Pattern Rainfall Infiltration into a Two-Layered Foundation XU Ruilin, QIN Weixing, HE Yong, HU Huiren, YANG Le, WANG Cong, XIONG Xuanyu Journal of Jishou University(Natural Sciences Edition)    2022, 43 (3): 57-65.   DOI: 10.13438/j.cnki.jdzk.2022.03.010 Abstract （473）      PDF（pc） （509KB）（86）       Knowledge map    Save In order to reveal the influence of advanced-peak rainfall infiltration on the matrix suction distribution of a two-layered foundation,the following research work is carried out.Firstly,based on Richards transient unsaturated seepage equation and Gardner soil water characteristic function,the water transport model of a two-layered unsaturated foundation for advanced-peak rainfall infiltration is established,and the transient analytical solution of matrix suction for advanced-peak pattern rainfall infiltration into a two-layered foundation is established by Laplace transform.Then,the analytical results are compared with those obtained from the finite element simulation,which indicates that the analytical solution is reasonable.The research results provide a convenient means to predict the evolution characteristics of matrix suction of a two-layered foundation for non-uniform rainfall infiltration,and can provide technical support for the evaluating bearing performance and reducing disaster of a foundation in rainy season. Reference | Related Articles | Metrics | Comments（0） Select Significance Analysis of the Influencing Parameters of Maximum Leachate Depth in Landfill Drainage Layer LIU Jinlong, QIN Weixing, XU Ruilin, HU Huiren, LIU Zechen, DENG Chuanxiong Journal of Jishou University(Natural Sciences Edition)    2022, 43 (3): 66-71.   DOI: 10.13438/j.cnki.jdzk.2022.03.011 Abstract （349）      PDF（pc） （473KB）（83）       Knowledge map    Save In order to predict the maximum leachate depth in landfill drainage layer and determine the significance of its influening parameters,the following research work is carried out.Firstly,an analytical solution to leachate depth along drainage layer is obtained during leachate infiltration based on the extended Dupuit assumption;the distribution law of leachate depth along drainage layer is analyzed with different leachate infiltration intensity.Then,orthogonal design method is used for comparing the effectiveness of the five main parameters influencing maximum leachate depth,which are leachate infiltration intensity,permeability coefficient,horizontal drainage distance,layout slope as well as water head at the drainage blind ditch ,and the most influential parameters for changing maximum leachate depth are obtained.The variance analysis gives the degrees of impact for each parameter on the maximum leachate depth.The results show that:(1) the analytical solution of leachate depth obtained above considers the actual hydraulic state of the drainage blind ditch in the drainage layer more reasonably,and the distribution characteristics of leachate depth are accurately described;(2) leachate infiltration intensity and horizontal drainage distance have significant impact on the maximum leachate depth in the landfill drainage layer.The findings will facilitate the optimization of design parameters of landfill drainage layer and the prevention of landfill instability caused by high leachate depth. Reference | Related Articles | Metrics | Comments（0）