임해매립지의 염분 모세관 상승차단을 위한 식재기반설계 연구

Abstract

영종도 신공항건설을 기점으로 대규모 임해매립지의 식재에 대한 연구와 시공경험 등이 축적되었음에도 불구하고 수목의 하자는 지속적으로 발생하고 있다. 이와 같은 배경에서 본 연구는 임해매립지의 식재기반 조성에 대한 선행된 연구와 사례 분석을 통해 임해매립지에서의 염분모세관 상승차단을 위한 식재기반 조성에 대한 설계방법을 모색 하고자 하였다. 본 연구 수행결과 이론 고찰을 통해 임해매립지 염해차단을 위한 적정 토심확보, 염해방지 차단 배수층 등의 식재기반 설계기준을 제시하였다. 또한 사례분석을 통해 기존의 식재기반 조성은 매립지의 환경적 특성에 대한 체계적인 조사가 미비하고 표준단면도를 작성하여 단지 전체에 일률적으로 적용하는 등 대상지의 지역적 특성을 반영하지 못하고 있음을 파악 하였다. 이에 본 연구에서는 현재 토목매립공사가 진행 중으로 지반현황 및 매립과정을 관찰할 수 있고 서해안 매립지로서 보편성 있는 석문산업단지를 대상지로 선정하여 염분모세관 상승차단을 위한 식재기반설계를 수행한 결과 첫째, 임해매립지의 식재기반 조성을 위해서는 매립재료, 지하수위, 성토재의 특성 등 매립기반 현황의 체계적 조사 분석을 시행해야 한다. 둘째, 조사 분석된 매립기반 현황을 토대로 설계대상지의 지반특성을 유형화하고 염분모세관 상승차단을 위한 식재기반설계는 배수와 차단을 함께 고려하여 평면설계와 단면 설계를 함께 진행 하도록 해야 한다. 셋째, 임해매립지의 공원녹지의 식재기반조성을 후속 공종인 조경공사에서 별도 시행하지 않고 기반조성공사에서 수행하도록 하여야 하는 것이 효율적인 것으로 연구되었다. 본 연구는 앞으로 조성되는 임해매립지의 공원 및 가로수 식재기반설계 과정에서 시공이 용이하고 경제적이며 지속적 유지관리가 가능한 식재기반설계의 가이드라인으로서의 역할을 할 수 있을 것으로 기대된다. 그리고 향후 다양한 환경특성을 고려한 임해매립지 사례조사를 통해 임해매립지 식재기반설계 지침서에 대한 연구가 진행 되어야 할 것으로 사료된다.|Since the construction of the new airport in Yongjong-do, defective plants have been continuously found despite the accumulation of the research and construction experiences on planting ground at large-scale seashore reclaimed lands. Under the current circumstance, through the previous research and case study analyses on the developed planting ground at seashore reclaimed land, the study is to investigate the design method of planting grounds to prevent saline capillary rise. Through theoretical approach, the study results suggested the proper soil depth to protect seashore reclaimed lands from the damage from salt water and design standards for planting grounds of a drainage layer to block saltwater. Also, through case study analyses, the study showed that he previous developments of planting ground lacked the systematical investigation on the environmental property of the land, and had a limitation in the reflection of the target site’s local property due to the indiscriminate application of a standard profile of the cross section. In this study, the Seokmoon Industrial Complex was selected as an ordinary West reclaimed land where the civil landfill construction is undergone so it is available to observe the ground condition and the process of reclamation, and planting ground design was performed to prevent saline capillary rise. The results are as followings. First, it is necessary to operate the systematical investigation and analysis on the status of the landfill base including the material, underground water level, and the characteristics of soil cement. Second, based on the investigation and analysis on the landfill base status, the ground characteristics of target design sites need to be categorized, and the design of planting ground needs to proceed both the flat design and section design together concerning the drainage and block in order for preventing saline capillary rise. Third, it is effective to develop the planting ground for parks and green spaces at seashore reclaimed lands, instead of operating the construction during the separate landscaping later on. The study is expected to contribute as the guideline for the design of planting ground that would make the construction easy, economic, and enable a sustainable maintenance in the process of planting ground designing for parks and trees at seashore reclaimed lands in the future. It would be necessary to conduct additional research on the guideline for planting ground designs through the case study of seashore reclaimed lands concerning a variety of environmental characteristics.; Since the construction of the new airport in Yongjong-do, defective plants have been continuously found despite the accumulation of the research and construction experiences on planting ground at large-scale seashore reclaimed lands. Under the current circumstance, through the previous research and case study analyses on the developed planting ground at seashore reclaimed land, the study is to investigate the design method of planting grounds to prevent saline capillary rise. Through theoretical approach, the study results suggested the proper soil depth to protect seashore reclaimed lands from the damage from salt water and design standards for planting grounds of a drainage layer to block saltwater. Also, through case study analyses, the study showed that he previous developments of planting ground lacked the systematical investigation on the environmental property of the land, and had a limitation in the reflection of the target site’s local property due to the indiscriminate application of a standard profile of the cross section. In this study, the Seokmoon Industrial Complex was selected as an ordinary West reclaimed land where the civil landfill construction is undergone so it is available to observe the ground condition and the process of reclamation, and planting ground design was performed to prevent saline capillary rise. The results are as followings. First, it is necessary to operate the systematical investigation and analysis on the status of the landfill base including the material, underground water level, and the characteristics of soil cement. Second, based on the investigation and analysis on the landfill base status, the ground characteristics of target design sites need to be categorized, and the design of planting ground needs to proceed both the flat design and section design together concerning the drainage and block in order for preventing saline capillary rise. Third, it is effective to develop the planting ground for parks and green spaces at seashore reclaimed lands, instead of operating the construction during the separate landscaping later on. The study is expected to contribute as the guideline for the design of planting ground that would make the construction easy, economic, and enable a sustainable maintenance in the process of planting ground designing for parks and trees at seashore reclaimed lands in the future. It would be necessary to conduct additional research on the guideline for planting ground designs through the case study of seashore reclaimed lands concerning a variety of environmental characteristics.