정상류하 침투 · 이류 분산 해석을 이용한 폐기물 해상최종처리장차수시스템의 최적 성능 평가
Evaluation of Optimal Performance of Hydraulic Barriers in Offshore Landfill using Seepage-Advection-Dispersion Analysis under Steady State Flow
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초록
본 연구는 정상류 조건에서 폐기물 해상최종처리장에서의 오염원의 누출 방지에 필요한 최적의 최소기준을 제안하기 위하여 각각 바닥 및 연직 차수시스템의 기본적인 차수공에 대하여 침투 · 이류 분산해석을 수행하였다. 연구 결과 바닥 차수시스템의 최소기준으로 투수계수 1 × 10−6 cm/s 이하인 불투수성 지층이 두께 500 cm 이상이거나 이와 동등한 차수효과를 가진 차수시스템이어야 한다. 연직 차수시스템의 최소기준으로 투수계수 1 × 10−6 cm/s 이하인 두께 50 cm 이상이거나 이와 동등한 차수효과를 가진 차수시스템을 설치하여야 한다. 또한, 연직 차수시스템은 바닥 차수시스템과 일체가 되어 차수기능을 발휘하도록 충분한 근입깊이가 필요하다.
Abstract
This study was conducted to propose the optimum minimum requirement of cutoff system composed of the impermeable soil layer and vertical barrier in offshore landfill for prevention pollution leakage by seepage, advection, and dispersion numerical analyses under steady state. According to the study results, the minimum requirement of impermeable soil layer is below 1 × 10−6 cm/s of hydraulic conductivity with more than 500 cm thickness or a system with equivalent cutoff effect. The minimum requirement of vertical barrier is below 1 × 10−6 cm/s of hydraulic conductivity with more than 50 cm thickness or a system with equivalent cutoff effect. In addition, the vertical barrier should be embedded enough to seal securely with the impermeable soil layer for working cutoff effect.
참고문헌 (10)
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