Estimation of Soil Water Characteristic Curves (SWCC) of mining sand using soil suction modelling

11th International Conference on Geotechnical Engineering in Tropical Regions;1st International Conference on Highway and Transportation Engineering 2019

矿业工程;运输工程

Azmi, M.^1 ; Ramli, M.H.^1 ; Hezmi, M.A.^2 ; Mohd Yusoff, S.A.N.^1 ; Alel, M.N.A.^2

School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, Seberang Perai Selatan, Pulau Pinang

14300, Malaysia^1

Faculty of Civil Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor

81310, Malaysia^2

关键词: Degree of saturations;    Direct measurement;    Initial water contents;    Mechanical behaviour;    Pressure plate test;    Soil water storage;    Soil-water characteristic curve;    Unsaturated soil;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/527/1/012016/pdf
DOI  :  10.1088/1757-899X/527/1/012016

来源: IOP

【 摘 要 】

Soil water characteristic curve (SWCC) is widely known as the relationship between matric suction and water content. It is used as a tool to determine the hydraulic and mechanical behaviour of unsaturated soils and to predict soil water storage. Direct measurement is difficult and time-consuming. Many empirical models have been developed to represent SWCC. The objective of this study is to validate the Van Genuchten and Fredlund and Xing models. The SWCC was obtained from pressure plate tests for different soil gradations of mining tailing sand samples taken from Kuala Trong, Taiping, Perak, Malaysia. The results presented include moisture content and degree of saturation versus matric suction. The constructed SWCCs were fitted using the Van Genuchten and Fredlund and Xing equations, and the behaviour of the parameters analysed and discussed. The study found that this method is good for the SWCC for mining tailing sand, and that SWCC is greatly affected by initial water content and the grain size of the sample.