• Journal of Korean Port Research
• /
• v.12 no.2
• /
• pp.303-312
• /
• 1998

It is necessary to quantitatively asses the influence of tidal currents to analysis the coastal current patterns before or after constructing offshore structures like as breakwaters. This assesment can be made through the use of simulation models designed to reproduce the water movements of the area. And it is very important to predict a phenomenon of pollutant dispersion in the area. In this study, in order to predict the changes of sea water quality for the port development plan, Ilgwang harbour, located at the east coast of Pusan, the numerical computations were carried out. The flow patterns were investigated before and after the development of the harbour bay and coastal area connected on it. The computational models are an extension of earlier work on the flow which used the ADI Method (Alternating Direction Implicit Method) in appling to Osaka Bay by KANEKO et al. The transport of pollutant constituents depends upon the currental characteristics of the water-transporting medium. In the currental flow model, water velocities and water levels are computed throughout the regions of it. These value are then used in the mass-balance equation to obtain the pollutant-constituent transport. As a result of this research, the present water quality of Ilgwang harbour and the coastal areas connected on it was proved out some good condition. The changes of sea water quality due to the port development plan of the Ilgwang habour bay and the coastal area were not large compared with the present condition, but it will be likely able to get worse by increasing the semi-enclosed areas in the harbour bay. In order to improve the water quality of the area after development, the method to activate tidal exchange in the area can be needed, as a mitigation technique.

• 한국방재학회:학술대회논문집
• /
• 2007.02a
• /
• pp.271-274
• /
• 2007

Lately, there are actively proceeding in making a plan for subway construction, a high-speed railway construction and a expansion of road and also all kinds of large-scaled construction in Korea. Construction works were delayed from noises and vibrations occurred by usage of a large-sized construction equipments and driven and also blast or there were often stopped from them under construction. Therefore, this study was modeling operation of the cyclic loading and conforming effects from grasping displacement-changing method through a variable analysis.

• 한국방재학회:학술대회논문집
• /
• 2007.02a
• /
• pp.376-379
• /
• 2007

In recent years, the natural damage associated with flood disaster has been dramatically increased. However, there is no rational method which reflects urban characteristics to estimate the regional safety assessment for flood disaster. The purpose of this study is to develop the regional safety assesment model for urban flood. Flood risk and reduction assesment were estimated by using the linear sum of the Z score of the assessment factors and the weight value of each factor from the expert survey data. And then the regional safety assessment was estimated by subtracting reduction factor value from risk factor value. GIS tool was used to estimate the factor assesment and integrated regional safety. This study can be used to determine the priority of flood protection project, execute the flood insurance and establish the urban plans and the flood mitigate plan.

• 한국방재학회:학술대회논문집
• /
• 2007.02a
• /
• pp.223-230
• /
• 2007

Nowaday, for the promotion of producing forest trees, production of excellent timbers, and build-up of public forest area, it is on the increase of the thinning-forest for artificial forest, natural forest, eco-friendly forest, and the forest for development and improvement of forest resources nationwide. Even though the thinning-forest is applied around 180,000ha every year, the quantity of collected/used products is only 18,000ha $(240,000m^3)$ which is 10% of the whole thinning-forest area. Meanwhile, some reports represent that the left products after thinning-forest might increase the severity of forest fire and the waste of resources. Therefore, this study focused on the analysis of correlation between the accumulated products after thinning-forest and forest fire, and providing a preparation plan for the forest fire.

• Journal of Energy Engineering
• /
• v.27 no.3
• /
• pp.41-47
• /
• 2018

Bauxite is the principal raw material to produce alumina. Bauxite mining industry has grown gradually due to the rising demand for alumina. U.S Geological Surveys (USGS 2018) estimates the world's reserves of bauxite roughly 55-75 billion tonnes. Vietnam holds up to 3.7 billion tonnes, the third after Guinea and Australia. Most of bauxite reserves are located in Tay Nguyen (Central Highlands), and have only been minimally mined to date. The approved master plan in 2007 of the Government of Vietnam licenses bauxite mining and alumina production projects in Central Highlands through six projects until 2025. These projects constitute many potentially enormous economic, social and environmental impacts.

• Journal of the Korean housing association
• /
• v.13 no.3
• /
• pp.21-31
• /
• 2002

The purpose of this study is to find the architectural characteristics of Verbena Heights, super high-rise complex housing, which has been most highly evaluated as a new town development model in Hong Kong, as a successful case of new housing type and sustainable design. The analyzed features of Verbena Heights are as follows; 1) Formation of various open spaces by a creative layout. 2) Enhancement of natural ventilation and daylighting by a linear plan instead of conventional cruciform plans. 3) Applications of integrated facade design for noise mitigation and for sunlight shading. 4) Adoption of energy-efficient devices, use of recyclable materials, and improvement of livability by a sustainable design process. These architectural characteristics provide the high-density high-rise housing with more efficient and comfortable environments for residents. And it is proved that the sustainable design can enhance the quality of dwelling environment.

• Proceedings of the KSR Conference
• /
• 2004.06a
• /
• pp.303-308
• /
• 2004

It is recently reported that the importance of environmental impact assessment(EIA) about groundwater outflow problems is beingy raised in the case of tunnel excavation during railroad construction. The EIA about groundwater outflow into railroad tunnel is generally performed using the results of numerical analysis embodied through groundwater flow modeling program like MODFLOW. The basic data for this modeling include (1) the geological and hydrogeological investigation data along the planned block of tunnel excavation, (2) total amount of outflowed groundwater during tunnel excavation, and (3) the status of groundwater level fluctuation in the water-supply wells distributed in the planned block of tunnel excavation. In this study, the authors analyzed the cases of the computational modeling about groundwater outflow in three planned blocks of railroad tunnel, and suggest the environmental impact factors and mitigation plan during EIA of tunnel excavation in railroad construction.

• Journal of Korea Water Resources Association
• /
• v.51 no.11
• /
• pp.951-958
• /
• 2018

Catastrophic tsunamis triggered by undersea earthquakes may invade not only neighboring but also distant coastal communities. Many coastal communities and nuclear power plants are located along the Eastern Coast of the Korean Peninsula and they may be very vulnerable to unexpected tsunami attacks. In this companion review, field survey of tsunamis, prevention against tsunamis, furture research topics will be described.

• 한국방재학회:학술대회논문집
• /
• 2010.02a
• /
• pp.69.2-69.2
• /
• 2010

특정관리대상시설은 "재난 및 안전관리 기본법" 에서 재난발생의 위험이 높거나 재난예방을 위하여 계속적으로 관리할 필요가 있다고 인정되는 시설 및 지역을 의미한다. 특정관리대상시설은 재난관리책임기관의 장이 지정하고 관리하도록 되어 있으나, 그 시설의 대상이 약10만개에 이르고, 시설의 종류도 42개에 달하며, 각기 개별법에 의한 안전관리가 추진되고 있어 실제적인 종합안전관리에는 많은 어려움이 있다. 본 연구에서는 다종다양한 특정관리대상시설물의 안전관리 실태를 조사하고, 효과적이고, 통합적인 특정관리대상시설의 안전관리를 위하여 종합안전관리시스템 개발을 위한 구축방안을 제시하였다.

• 한국방재학회:학술대회논문집
• /
• 2010.02a
• /
• pp.109.2-109.2
• /
• 2010

방재계획의 하나인 대피장소 및 대피경로의 결정은 방재계획 중 가장 기본이 되는 사항으로 재해발생 시 대비가 적절치 못하면 대규모 인명피해가 발생할 우려가 있기 때문에 결정에 신중을 기해야 한다. 대피장소 및 대피경로의 결정은 직접 대규모 인원이 참여한 모의실험을 실시하여 효율적이고 안전한 방법을 찾는 것이 가장 바람직하다. 그러나 이러한 접근은 현실적으로 불가능하기 때문에 본 연구에서는 대상 지역의 지진해일 대피 시뮬레이션 모형을 제작하고 이를 적용하여 최적의 대피장소 및 대피경로를 지정할 수 있도록 하였다. 이러한 접근을 통하여 실제 지진해일 발생 시 주민들이 가장 빠르고 안전하게 대피하도록 할 수 있으며, 나아가 효율적이고 안전한 방재계획 수립에 큰 역할을 할 수 있을 것이다. 본 연구에서는 과거 지진해일로 인한 피해 경험이 있는 삼척항을 지진해일 대피 시뮬레이션을 위한 대상지역으로 선정하였다. 또한, 현장 조사를 실시하여 대상지역의 지형특성을 고려한 결과를 토대로 지진해일 대피 시뮬레이션에 앞서 필요한 가상 시나리오를 작성하였고 지진해일 대피 시뮬레이션을 통해 비상대처계획(EAP, Emergency Action Plan) 수립에 필수 사항인 대피계획을 검토하였다.