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http://dx.doi.org/10.9720/kseg.2017.3.191

Estimation of Debris Flow Impact Forces on Mitigation Structures Using Small-Scale Modelling  

Lee, Kyung-Soo (Principal Engineer, Geotechnical R&D Center, DASAN Engineering Co., Ltd.)
Cho, Seong-Ha (Principal Engineer, Geotechnical R&D Center, DASAN Engineering Co., Ltd.)
Kim, Jin-Ho (Principal Engineer, Geotechnical R&D Center, DASAN Engineering Co., Ltd.)
Yoo, Bo-Sun (Principal Engineer, Geotechnical R&D Center, DASAN Engineering Co., Ltd.)
Publication Information
The Journal of Engineering Geology / v.27, no.3, 2017 , pp. 191-205 More about this Journal
Abstract
We use small-scale modelling to estimate the impact ofrce of debris flows on erosion control dams (ECD) and ring nets. The results indicate that the viscoelastic debris flows produced impact forces of 4.14, 3.66, 1.66 kN from the bottom to the top of the ECD. Ring net tests produced a similar trend with generally smaller impact forces (2.28, 1.95, and 1.49 kN). Numerical analysis showed that the weight of the ECD (e.g., concrete retaining walls) provided resistance against the debris flow, whereas deformation of the ring net by elastic-elongation and aggregate penetration reduced the impact force by up to 45% compared with that of the ECD.
Keywords
Debris flow; Debris mitigation structure; Erosion control dam; Ring net; Debris flow impact force;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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