Browse > Article
http://dx.doi.org/10.12652/Ksce.2021.41.3.0237

A Study on Soil Improvement Agent for Rainfall-Induced Erosion on the Soil Slope  

Kang, Dae-Heung (Dongshin University)
Kim, Young-Suk (Dongshin University)
Hwang, In-Taek (Dongshin University)
Kim, Jae-Hong (Dongshin University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.41, no.3, 2021 , pp. 237-246 More about this Journal
Abstract
With climate change, debris flow has been increasing due to the collapse and erosion of shallow slopes caused by extreme rainfall. It is preferred to an economical and eco-friendly method rather than reinforcement of soil slopes with the earth anchor or nailing method. In this study, a soil improvement agent was developed by utilizing insitu soil, leaf mold, and used harbal medicine to help sufficient vegetation. In addition, to prevent surface erosion, shear strength of the soil was increased by using micro cement and hemihydrate gypsum as additives. The optimum mix ratio of the mixture is determined by increasing the shear strength by checking the erosion progress of the ground surface layer due to rainfall through an laboratory test. The safety factor of soil slope has been improved on the slope surface reinforced by the improvement agent, and the strength of erosion has been increased, making it efficient to cope with heavy rain during wet season.
Keywords
Shallow failure; Reinforced soil; Erosion; Scour; Slope stability;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Bhang, I. H. (2007). A study on the technology related to the control and rehabilitation of slope surface erosion, Master Thesis, Chonbuk National University (in Korean).
2 Edil, T. B., Acosta, H. A. and Benson, C. H. (2006). "Stabilizing soft fine-grained soils with fly ash." Journal of Materials in Civil Engineering, ASCE, Vol. 18, No. 2, pp. 283-294.   DOI
3 Fredlund, D. G. and Rahardjo, H. (1993). Soil mechanics for unsaturated soils, John Wiley & Sons Inc., New York, USA.
4 Kim, J. H., Park, S. W., Jeong, S. S. and Yoo, J. H. (2002). "A study of stability analysis on unsaturated weathered slopes based on rainfall-induced wetting." Journal of the Korean Geotechnical Society, Vol. 18, No. 2, pp. 123-136 (in Korean).
5 Kim, Y. S., Kim, J. H., Bhang, I. H. and Seo, S. G. (2013a). "A study on rainfall-induced erosion of land surface on reinforced slope using soil improvement material." Journal of the Korean Geotechnical Society, Vol. 29, No. 1, pp. 49-59 (in Korean).   DOI
6 Ministry of Land, Transport and Maritime Affairs (MLTMA) (2016). Standard for slope stability design (in Korean).
7 Kim, Y. S., Kim, J. H., Lee, J. K. and Kim, S. S. (2013b). "A study on soil slope stability design considering seepage analysis." Journal of the Korean Geotechnical Society, Vol. 29, No. 1, pp. 135-147 (in Korean).   DOI