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http://dx.doi.org/10.12814/jkgss.2016.15.3.049

Establishment on the Monitoring System for Unsaturated Characteristics Variation in a Mine Waste-Dump Slope  

Song, Young-Suk (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Jung, In-Keun (KCT E&C)
Publication Information
Journal of the Korean Geosynthetics Society / v.15, no.3, 2016 , pp. 49-55 More about this Journal
Abstract
Field measurement units and a system were constructed and installed in a waste-dump slope at the Imgi mine to investigate and analyze the variations in the unsaturated characteristics of the soil. The field instrumentation system was composed of a data acquisition system (DAS), a solar system, and measuring sensors. The rainfall, matric suction, and volumetric water contents were continuously measured from the units in the instrumented site. The variations in matric suction and volumetric water content were primarily affected by the rainfall intensity. At the surface of the slope, the largest increase and decrease in the changes in matric suction and volumetric water content were observed during the wetting and drying processes, respectively. Also, the matric suction and volumetric water content were 5-35 kPa and 0.12-0.24, respectively. However, the ground water level was not suddenly increased just after rainfall but gradually increased after 2 or 3 days later.
Keywords
Waste-dump slope; Field monitoring; Rainfall; Volumetric water content; Matric suction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Cho, S. E. and Lee, S. R. (2001) "Instability of unsaturated soil slopes due to infiltration", Computers and Geotechnics, Vol.28, pp.185-208.   DOI
2 Damiano, E., Olivares, L. and Picarelli, L. (2012) "Steepslope monitoring in unsaturated pyroclastic soils", Engineering Geology, Vol.137-138, pp.1-12.   DOI
3 Fredlund, D.G. and Rahardjo, H. (1995) Soil mechanics for unsaturated soils, John Wiley & Sons Inc., New York.
4 Gasmo, J. Hritzuk, K.J., Rahardjo, H. and Leong, E.C. (1999) "Instrumentation of an unsaturated residual soil slope", Geotechnical Testing Journal, Vol.22, No.2, pp.128-137.
5 Godt, J.W., Baum, R.L. and Lu, N. (2009) "Landsliding in partially saturated materials", Geophysical Research Letters, Vol.36, L02403.
6 Lee, I.M., Cho, W.S., Kim, Y.U., Sung, S.G. (2003) "In-situ monitoring of matric suctions in a weathered soil slope", Journal of Korean Geotechnical Society, Vol.19, No.1, pp.41-49 (In Korean with English abstract).
7 Lim, T.T., Rahardjo, H., Chang, M.F. and Fredlund, D.G. (1996) "Effect of rainfall on matric suctions in a residual soil slope", Canadian Geotechnical Journal, Vol.33, pp.618-628.   DOI
8 Mofiz, S.A.. Sarkar, D.C., Rahman, S., Awall, M.R., Taha, M.R. and Hossain, M.K. (2005) "Instrumentation and matric soil suction measurement in a decomposed granite soil slope", Proc. Advanced Experimental Unsaturated Soil Mechanics, Trento, Italy, pp.527-532.
9 Ng, C.W.W. and Shi, Q. (1998) "A numerical investigation of the stability of unsaturated soil slopes subjected to transient seepage", Computers and Geotechnics, Vol.22, No.1, pp.1-28.   DOI
10 Oh, S.B. and Lu, N. (2015) "Slope stability analysis under unsaturated conditions: Case studies of rainfall-induced failure of cut slopes", Engineering Geology, Vol.184, pp.96-103.   DOI
11 Rahardjo, H., Lee, T.T., Leong, E.C. and Rezaur, R.B. (2005) "Response of a residual soil slope to rainfall", Canadian Geotechnical Journal, Vol.42, pp.340-351.   DOI
12 Rahardjo, H., Leong, E.C. and Rezaur, R.B. (2008) "Effect of antecedent rainfall on pore-water pressure distribution characteristics in residual soil slopes under tropical rainfall", Hydrological Process, Vol.22, pp.506-253.   DOI
13 Song, Y.S., Chae, B.G. and Lee, J.T. (2016) "A method for evaluating the stability of an unsaturated slope in natural terrain during rainfall", Engineering Geology, Vol.201, pp.84-92.
14 Song, Y. S., Kim, K.S., Jeong, S.W. and Lee, C.O. (2014) "Estimation on unsaturated characteristic curves of tailings obtained from waste dump of Imgi mine in Busan", Journal of the Korean Geotechnical Society, Vol.30, No.3, pp.47-58 (In Korean with English abstract).   DOI
15 Tu, X.B., Kwong, A.K.L., Dai, F.C., Tham, L.G. and Min, H. (2009) "Field monitoring of rainfall infiltration in a loess slope and analysis of failure mechanism of rainfall-induced landslides", Engineering Geology, Vol.105, pp.134-150.   DOI