새만금 방조제 끝막이 구간의 사석 및 돌망태의 안정성 평가 = Stability Evaluation of Rock and Gabion in the Final Closing Stage of Saemanguem Sea Dike

다국어 초록 (Multilingual Abstract)

The hydraulic stabilities and the applicable range of the rock and gabion analyzed from the hydraulic physical modeling were synthetically evaluated relating with the successful final closing of Saemanguem Sea Dike. In the modeling the critical velocities of gabions are changed depends on the gap position, and they are as great as 1.22~1.38 times of those of rock. And the more the mixed ratio of gabion increase, the larger the critical velocity linearly. In the analysis 10% increasing of the mixed ratio of gabion effectuates the increasing of critical velocities in 0.24～ 0.29cm/s in average. From these results the rocks and gabions designed and used for the final closing of Saemanguem Sea Dike could preserve the stability during the closing work. In conclusion, the use of gabion for the final closing of dike gives greater positioning and interlocking so that it made increasing of resistance to the flow velocity, and gave assurance of the stability of structure.