하천제방은 세굴 및 침식에 의해 노후화 및 훼손된다. 본 연구에서 제내지 비탈면의 훼손으로 인한 영향을 평가하고자 침투해석과 비탈면 안정해석을 수행하였다. 침투해석 결과, 제내지 비탈면의 훼손으로 인해 발생되는 침투거동의 변화는 제체의 침윤선에 대한 훼손영역의 상대적 위치에 의해 지배되었다. 훼손영역이 제내지 비탈면의 상부, 즉 침윤선 위에 존재할 때는 유출 동수경사의 변화가 거의 발생되지 않았다. 하지만, 제내지 비탈면의 아래에 존재할 때는 유출 동수경사가 정상 제방에 비해 크게 증가되었다. 비탈면 안정해석결과, 훼손영역이 제내지 비탈면 상부에 존재할 경우, 침윤선 상부의 불포화 영역에 파괴면이 존재하며, 활동력이 감소되므로 비탈면 안전율은 다소 증가되었다. 하지만, 비탈면 하부에 훼손영역 존재시, 안전율이 감소되었다.
하천제방은 세굴 및 침식에 의해 노후화 및 훼손된다. 본 연구에서 제내지 비탈면의 훼손으로 인한 영향을 평가하고자 침투해석과 비탈면 안정해석을 수행하였다. 침투해석 결과, 제내지 비탈면의 훼손으로 인해 발생되는 침투거동의 변화는 제체의 침윤선에 대한 훼손영역의 상대적 위치에 의해 지배되었다. 훼손영역이 제내지 비탈면의 상부, 즉 침윤선 위에 존재할 때는 유출 동수경사의 변화가 거의 발생되지 않았다. 하지만, 제내지 비탈면의 아래에 존재할 때는 유출 동수경사가 정상 제방에 비해 크게 증가되었다. 비탈면 안정해석결과, 훼손영역이 제내지 비탈면 상부에 존재할 경우, 침윤선 상부의 불포화 영역에 파괴면이 존재하며, 활동력이 감소되므로 비탈면 안전율은 다소 증가되었다. 하지만, 비탈면 하부에 훼손영역 존재시, 안전율이 감소되었다.
Embankment is deteriorated and damaged by mainly scouring and erosion. In this study, analysis of seepage and slope stability were conducted to examine the influences of embankment damages. From the results of seepage analysis, variation of the seepage behavior caused by the damage of embankment was...
Embankment is deteriorated and damaged by mainly scouring and erosion. In this study, analysis of seepage and slope stability were conducted to examine the influences of embankment damages. From the results of seepage analysis, variation of the seepage behavior caused by the damage of embankment was dominated by the relative position of the damaged area about phreatic line. If the damaged area was located upper side of embankment, that existed upper than phreatic line, the exit hydraulic gradients showed small variations. However, if the damaged area is located lower side of it, the exit hydraulic gradients is increased significantly compared to the normal embankment. From the results of slope stability analysis, if the damaged area is existing upper side of embankment slope and the slope failure surface appeared in unsaturated area, that is the upper side of phreatic line, therefore the driving force of slope failure is reduced and it increased the safety factor of slope. However, if the damaged area appeared in lower part of it, the safety factor was reduced.
Embankment is deteriorated and damaged by mainly scouring and erosion. In this study, analysis of seepage and slope stability were conducted to examine the influences of embankment damages. From the results of seepage analysis, variation of the seepage behavior caused by the damage of embankment was dominated by the relative position of the damaged area about phreatic line. If the damaged area was located upper side of embankment, that existed upper than phreatic line, the exit hydraulic gradients showed small variations. However, if the damaged area is located lower side of it, the exit hydraulic gradients is increased significantly compared to the normal embankment. From the results of slope stability analysis, if the damaged area is existing upper side of embankment slope and the slope failure surface appeared in unsaturated area, that is the upper side of phreatic line, therefore the driving force of slope failure is reduced and it increased the safety factor of slope. However, if the damaged area appeared in lower part of it, the safety factor was reduced.
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