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J. Ocean Eng. Technol. > Volume 25(1); 2011 > Article
J. Ocean Eng. Technol. 2011;25(1):14-21.    
DOI: https://doi.org/10.5574/KSOE.2011.25.1.014   

A Laboratory Study for Erosional Properties of Cohesive Sediments from Mokpo Coast
Kim Man-Kon,Yang Su-Hyun,Tae Dong-Hyeon,Hwang Kyu-Nam
Civil Engineering Chonbuk National University,Civil Engineering Chonbuk National University,Civil Engineering Chonbuk National University,Civil Engineering Chonbuk National University
목포해역 점착성 퇴적물의 침식특성에 대한 실험적 연구
김만곤,양수현,태동현,황규남
전북대학교 토목공학과,전북대학교 토목공학과,전북대학교 토목공학과,전북대학교 토목공학과
© 2011 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Mokpo coast, Cohesive sediments, Critical shear stress for erosion, Erosion rate coefficient
핵심용어: 목포해역, 점착성 퇴적물, 침식한계전단응력, 침식률계수
Abstract
The purpose of this study is to quantify the erosional parameters, such as the critical shear stress for erosion and the erosion rate coefficient for cohesive sediments from the Mokpo coast. Using Chonbuk annular flume, five erosion tests were conducted under the uniform bed condition but a different bed density respectively. Erosion test results for Mokpo sediments have shown increases in the range of $0.16{sim}0.43;N/m^2$ but decreases exponentially in the range of $272{sim}4.64;mg/cm^2{cdot}hr$ for the given bed shear stress of $1.14{sim}1.34;g/cm^3$. The erosional parameters of Mokpo sediments are found to vary remarkably in quantity compared with those for cohesive sediments from other sites. On the whole, the value of Mokpo coast sediments appears to be similar to Kunsan sediments but smaller than Saemankeum and Okeechobee sediments. On the other hand, Mokpo sediments have been shown to be larger than Saemankeum and Okeechobee sediments but smaller than Kunsan sediments.


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