• 한국측량학회지
• /
• 제31권5호
• /
• pp.393-400
• /
• 2013

최근 기후변화에 따른 국지성 집중호우나 홍수로 인해 침수피해, 환경파괴 등 인명피해나 재산피해가 증가하고 있는 추세이다. 특히, 도시의 난개발로 인한 불투수율 증가로 인해 침수 빈도 증가와 함께 침수지역의 확대로 인한 많은 재산피해가 발생하고 있다. 이에 본 연구에서는 2009년부터 구축된 부산지역의 침수흔적도를 이용하여 부산광역시의 해운대구, 수영구, 사하구를 대상으로 침수지역의 유형화를 통해 각 유형별 침수피해 원인 분석 및 방지 대책을 제시하였다. 이를 위해 침수지역을 내수범람형, 하천범람형, 해수범람형으로 분류한 후 사전예방 중심의 방지대책을 관리체계 측면, 인프라 구축 측면, 시스템 측면으로 나누어 관련성을 부여함으로써 보다 더 객관적이고 과학적으로 침수문제에 접근하였고 이러한 연구를 통해 추후 침수흔적도의 활용에 관한 활성화 방안을 제시하였다.

• 대한공간정보학회지
• /
• 제20권3호
• /
• pp.91-99
• /
• 2012

진주시는 과거 발생한 태풍 및 집중호우 등으로 피해를 입은 지역을 대상으로 홍수침수위험지구를 8곳 선정하고 이 지역에 대한 대피소를 지정하여 운영하고 있다. 본 연구에서는 침수위험지구 중 시가지에 위치하고 인구밀도가 높은 나불지구와 상평지구를 연구 대상지역으로 선정하였다. 침수재해가 발생할 경우 대피조건을 고려하여 아동, 일반성인, 노약자로 구분하고 이동속도와 도달시간을 계산하여 대피소의 위치에 대한 적합성 평가를 GIS의 네트워크분석을 적용하였다. 그 결과 아동과 노약자의 경우 대피시간이 많이 소요되어 대피소로 대피하는데 적정대피 계획시간을 초과하고 있으며 일부지역은 일반성인도 규정된 대피시간을 초과하는 것으로 나타났다. 따라서 나불, 상평지구에 현재 지정된 대피소의 문제점을 보완할 수 있는 대피소를 1-2개 추가 지정하여 대피시간에 따른 문제점을 개선하였으며, 향후 대피경보발령과 연령별 대피계획을 보다 구체적으로 구축하여 재해발생 시 인적 물적 피해를 줄일 수 있는 대책 마련이 요구된다.

• 한국환경과학회지
• /
• 제19권6호
• /
• pp.665-670
• /
• 2010

Pollutants from urban pavement consists various kinds of substances which are originated from dry deposition, a grind out tire, corrosive action of rain to pavement and facilities and raw materials of the road etc.. These are major pollutants of urban NPS (Non-point source) during rainfall period. However there is not enough information to control such pollutants for appropriate management of natural water quality. In this study of transportation areas, three monitoring stations were set up at trunk road, urban highway and national road in Gyeongnam province. Runoff flow rate was measured at every 15minutes by automatic flow meters installed at the end of storm sewer pipe within the road catchment area for water quality analysis. Data was collected every 15 minutes for initial two hours of rainfall. Additional samples were collected 1-4 hours interval till the end of rainfall. The monitoring parameters were $COD_{Mn}$, SS, T-N & T-P and heavy metals. The average EMCs of TSS and $COD_{Mn}$ were 62.0 mg/L and 24.2 mg/L on the city trunk road, which were higher than those of urban highway and national road, indicating higher pollutant loads due to activities in the city downtown area beside the vehicle. On the other hand, the average EMC of T-N and T-P were in the range of 2.67-3.23 mg/L and 0.19-3.21 mg/L for all the sampling sites. Heavy metals from the roads were mainly Fe, Zn, Cu and Mn, showing variable EMCs by the type of road. From the TSS wash-off analysis in terms of FF(first flush) index, first flush phenomenon was clearly observed in the trunk road(FF : 0.89-1.43). However, such mass delivery behavior was not apparently shown in urban highway(FF : 0.90-1.11) and national road(FF : 0.81-1.41).

• 한국수자원학회논문집
• /
• 제54권2호
• /
• pp.71-80
• /
• 2021

최근 이상강우에 따른 고빈도 강우 발생율의 증가 및 집중호우의 증가로 인한 침수발생 가능성이 증가하고 있다. 또한 도시화로 인한 인구집중과 개발 집중으로 인한 도시의 불투수층의 증가로 우수유출량이 증가하고 있다. 도시가 발달한 지역 특성상 하천 주변 및 저지대지역에 위치하고 있다. 내수침수분석에는 수리·수문분석을 바탕으로 우수관로 및 지표흐름 분석이 가능한 XP-SWMM 과 홍수-수문곡선과 강우-유출곡선을 추적 할 수 있는 FLO-2D 모형을 이용하여 실재 침수가 발생한 지역의 침수분석을 실시하여 비교 검토를 실시하였다. 두 모형의 침수발생 양상을 비교한 결과, 울진군 울진읍의 경우 LSSI 는 71.68%로 우수관망을 적용하지 않고 지형자료만을 이용한 FLO-2D도 양호하게 분석되었다. 따라서 XP-SWMM은 도시침수해소, 침수양상등 다양한 목적으로, FLO-2D는 침수양상만을 검토할 때 사용이 가능하다.

• 한국농공학회논문집
• /
• 제64권5호
• /
• pp.53-65
• /
• 2022

Most of the reservoirs managed by the city and county are small and it is difficult to respond to climate change because the drainage area is small and the inflow increases rapidly when a heavy rain occurs. In this study, the current status of reservoirs managed by city and county in Gyeonggi-do was reviewed and flood vulnerability due to climate change was analyzed. In order to analyze the impact of climate change, CMIP6-based future climate scenario provided by IPCC was used, and future rainfall data was established through downscaling of climate scenario (SSP8-8.5). The flood vulnerability of reservoirs due to climate change was evaluated using the concept provided by the IPCC. The future annual precipitation at six weather stations appeared a gradual increase and the fluctuation range of the annual precipitation was also found to increase. As a result of calculating the flood vulnerability index, it was analyzed that the flood vulnerability was the largest in the 2055s period and the lowest in the 2025s period. In the past period (2000s), the number of D and E grade reservoirs was 58, but it was found to increase to 107 in the 2055s period. In 2085s, there were 17 E grade reservoirs, which was more than in the past. Therefore, it is necessary to take measures against the increasing risk of flooding in the future.

• 농업과학연구
• /
• 제31권1호
• /
• pp.53-75
• /
• 2004

This study is aimed at identifying the national economic value of the irrigation facilities by reviewing the existing papers on economic values of the irrigation facilities and presenting current status of dual O & M problems of the irrigation facilities. This study suggested the unified O & M system rather than continuing the existing dual O & M system of irrigation facilities based on the surveyed results of the activities of irrigation fraternities in Chungnam Province. The findings and proposals for the successful unified and mono O & M system of the irrigation facilities are as follows: (1) Total number of irrigation facilities in the nation accounts for 67,582, while the total length of irrigation and drainage canals amounted to about 174,259km. On account of the total length of structural canals was estimated at 31%, much losses of water and much O & M costs have been inevitable for the full irrigation rice culture. In spite of the past heavy investment for irrigation facilities, the ratio of rain-fed and partially irrigated paddy fields accounts for 23% in 2003. Both Korea Agricultural and Rural Infrastructure Corporation (KARICO) and the city and Gun Governments have managed the irrigation facilities separately by irrigation fraternities. The KARICO have commanded 59% of irrigation paddy area with 18% of the total irrigation facilities, while the city and Gun governments covered 41% of irrigation paddy area with 82% of the existing number of irrigation facilities representing small and medium scale. (2) The 1999 demand prices of irrigation water per ton expressed in 2000 constant market price was estimated at 388 won, the supply price was amounted to 184 won per ton. Considering the supply and demand curve of the irrigation water, the existing irrigation facilities could not satisfy the demand of irrigation water. (3) In 1999, total present added value of the irrigation facilities during the economic life accounted for 48 trillion won, while total supply cost was 44.7 trillion won. The marginal benefit and cost ratio of irrigation water was 1.08. (4) The total O & M cost per year amounting to 681.1 billion won have been required to maintain and repair the existing irrigation facilities in Korea. For the successful unified O & M of irrigation facilities covering whole irrigated paddy field in Korea, 950 billion won of O & M costs are required to keep up the marginal benefit of irrigation water as 2,800 billion won per year. The total O & M cost as 950 billion won should be allocated 40%, 380 billion won for O & M costs of irrigation facilities and 60%, 570 billion won for improvement of irrigation facilities. (5) The study investigated and reviewed the present O & M status of the irrigation facilities by small and medium irrigation fraternities. Most of the farmers belong to the irrigation fraternities preferred not only unified O & M but also KARICO take-over of the whole O & M activities of the irrigation facilities. The prevailing O & M cost per 10a expended by the Corporation was amounted to 104,890 won, while that of city and Gun governments was only amounted to 4,600 won per 10a. regarding the small amount of O & M cost expended by city and Gun governments, it is evident that the existing irrigation system have been managed ineffectively and deteriorated the facilities comparing that of KARICO. In conclusion, the Government could not satisfied the demand of irrigation water by suppling water with existing irrigation facilities. Therefore new additional investment and financial support for irrigation water development should be made to convert rain-fed and partially irrigated paddy fields into fully irrigated ones. The operation and maintenance cost should be supported to keep the marginal values of rice production of existing irrigation facilities in the national economy and to modernize the obsolete irrigation facilities. By unifying the existing dual O & M systems, all the farmers belong to the irrigated paddy fields have to be equally benefited and could be increased their farm income and be stabilized their rural lives.

• 한국재난정보학회 논문집
• /
• 제14권1호
• /
• pp.17-27
• /
• 2018

본 연구의 목적은 자연재난을 경험한 농촌주민을 대상으로 재난 후 개인의 변화와 재해인식, 심리적 스트레스를 알아보고 이에 따른 농촌주민의 재난대책방안을 모색하고자 하였다. 연구대상은 2017년 7월 집중호우로 직간접적인 피해를 입은 충청남도 청주시에 거주하는 농촌주민을 대상으로 하였으며, 설문조사와 인터뷰 방법을 사용하였다. 연구결과 성별에 따른 재해인식에 유의미한 차이가 있었으며, 많은 주민들이 외상 후 스트레스를 겪고 있는 것으로 나타났다. 마지막으로 본 연구의 고찰 및 제언을 통해 농촌주민의 재난 후 성장을 위한 방향을 제안하였다.

• 한국관개배수논문집
• /
• 제21권1호
• /
• pp.109-117
• /
• 2014

Multi water-loop system is the efficient customer centered facilities of water supply by utilizing the multi water resources. Multi water-loop system is divided into various types. The system is classified potable and non-potable type. Mostly, the potable type utilizes surface water and ground water. However, the non-potable type utilize the multi water resources, such as rain water, sea water, reclaimed water, etc. Selective intake is possible when characteristics of region, physiographic condition and purpose of use are considered. For instance, downtown type, new-city type, agriculture type, island type are available. For development and application of these multi water-loop system, standardization is needed. For standardization, several methods are given; design principles, selection and composition method of multi water-loop system structure, BIM/GIS application method, safety inspection method. Consequently, a road map of design standardization method can be established. In this road map, there are three parts for the standardization of multi water-loop system. Three parts are the considerations, base material and ways of standardization. Design standardization become close when this road map followed by someone who plan the multi water-loop system. In this way, loop system's development is more efficient and economic. In hereafter research, each type's characteristic will be analysed and standardization methods can be established.

• 한국조경학회지
• /
• 제29권5호
• /
• pp.37-42
• /
• 2001

This research is related to house entrance recognition of residents, who have long kept the entrance without a closing door in Eoeun village, Geumho, Keongbook. The purpose of the research was to interpret the recognition of a house entrance in Eoeun village with the theories of cultural ecology. Final results suggest the belief for all the inhabitant\`s welfare through anthropological adaptation to habitat. The fish in the Geumho River had sought the shelter from the heavy rain in summer. The Eoeun forest at the entrance of the village provided good shelter for the fish. The Eoeun residents thought that the safe shelter fur the river fish is also semantic for the people. They believed that if the fish could not find shelter, i.e., the Eoeun forest and left, the village could be not safe for their life. Therefore, even the entrance of house should be structurely opened for the fish shelter in a symbolic sense. The entrance without a closing door has implied that their life should depend upon their natural environments because they have believed that till now there have been no considerable accidents in the village.

• 한국주거학회논문집
• /
• 제25권3호
• /
• pp.53-62
• /
• 2014

This paper investigates whether the use of Rainwater Harvesting Systems (RWHSs) to provide water for washing machines in Hong Kong residential buildings would be financially attractive. In such systems, rainwater is accumulated and reused for doing laundry, garden irrigation, flushing toilets, and even drinking. Thus, the analysis of RWHSs' financial feasibility is essential for construction projects. RainCycle is used to validate financial feasibility, considering particular circumstances and data relevant to the Hong Kong context. A range of different scenarios by adjusting three factors are evaluated: catchment area, water demand, and discount rate. It is suggested that $2,000m^2$ would be a suitable catchment area in a typical Hong Kong residential building and it is demonstrated how water demand and discount rate influence the financial performance of RWHSs. In particular, the financial performance of RWHSs is sensitive to discount rates. The results suggest that the RWH system would be worthwhile for buildings with a lower number of floors, but would barely achieve financial validation in Hong Kong's super high-rise residential buildings.