수치해석을 통한 해상처분장 연직차수공 안정성 및 지반 내 흐름특성 평가

• 영문명: Numerical Analysis on the Flow and Stability of Vertical Hydraulic Barrier at Offshore Containment Facility
• 발행기관: 한국연안방재학회
• 저자명: 채광석(Kwangseok Chae) 오명학(Myounghak Oh)
• 간행물 정보: 『한국연안방재학회지』제8권 제2호, 69~78쪽, 전체 10쪽
• 주제분류: 사회과학 > 사회과학일반
• 파일형태: PDF
• 발행일자: 2021.04.30

영문 초록

Preventing leakage and structural stability of vertical barrier at offshore containment facilities are very important. Two-dimensional numerical analysis were performed to evaluate seepage and flow characteristics regarding to different embedded depths and hydraulic permeability of vertical barrier. In addition, stress and displacement at corner of vertical barrier were evaluated by using 3-dimensional numerical analysis. The effluent flux in the case of vertical barrier with insufficient embedded depth was significantly increased by 200 ~ 240 times compared with the case of embedded barrier in low permeable clay layer. The effluent flux was increased by 4.5 and 45 times according to 10 and 100 times increase of hydraulic permeability of vertical barrier, respectively. The seepage and flow analysis results imply that the most important factor to prevent leakage is to embed the vertical barrier in low permeable layer. The 3-dimensional stress and displacement analysis results showed small displacement but large moment and shear stress at the corner of vertical barrier. Therefore, the stiffness and strength at the corner of vertical barrier compared with other parts should be increased to secure stability of vertical barrier at offshore disposal facilities.

목차

1. 서 론

2. 수치해석방법

3. 침투흐름 해석결과

4. 우각부 거동해석 결과

5. 결 론

키워드

offshore containment facility waste disposal vertical hydraulic barrier PLAXI