• 한국산업융합학회 논문집
• /
• 제14권1호
• /
• pp.1-7
• /
• 2011

Basalt originates from volcanic magma and flood volcanoes, a very hot fluid or semifluid material under the earth's crust, solidified in the open air. Basalt is a common term used for a variety of volcanic rocks, which are gray, dark in colour, formed from the molten lava after solidification. Recently, attention has been devoted to continuous basalt fibers (CBF) whose primary advantage consists in their low cost, good resistance to acids and solvents, and good thermal stability. In order to investigate reinforcement effect, this paper did FEM analysis with shell element. The result were as follows; BCF deck plate did elastic behavior to 450 kN, reinforcement effect of basalt fiber (BF) was less. But BCF's perpendicular deflection occurred little about 23 mm comparing with RC deck plate in load 627 kN. Stiffness was very improved by basalt fiber reinforcement.

• 한국수자원학회:학술대회논문집
• /
• 한국수자원학회 2022년도 학술발표회
• /
• pp.138-138
• /
• 2022

Understanding a stream's or river's discharge is essential for a variety of hydrological and geomorphological applications at various sizes. However, depending on the stream environment and flow conditions, it is crucial to use the appropriate techniques and instruments. This will ensure that discharge estimations are as reliable as possible. This study presents developed smart system for continuous measurement of open channel discharge and evaluate streamflow measurement over various techniques. This includes developed smart flow meter as flow point measurements, smart water level sensor (installed on Hydraulic Structure ? Weir) and current meters. Advantages and disadvantages of each equipment are presented to ensure that the most appropriate method can be selected. we found that smart water level sensor is more prominent once used during flood event as compared to smart flow meter and current meters, while current meters seems to show better accuracy once applied for open channel.

• 상하수도학회지
• /
• 제29권2호
• /
• pp.243-249
• /
• 2015

To improve stability of the water resources that were seriously affected by climate change and various environmental effects and to supply the clean water always, continuous efforts are essential. Provision of measures with respect of hardware is basically essential to improve the water resources stability due to the topographic characteristic in Korea. However, building a new dam becomes gradually very difficult because of a hardship in selecting right places, opposition forces such as environment and local residents, negative publicity for large civil engineering projects, and so on. The present study, therefore, proposes the Blue dam as an alternative for securing the water resources of a new concept considering domestic conditions. To evaluate the effect of the Blue dam, the Hec-ResSim model is used and the probabilistic discharge flow rate is applied. As a result, when Dam Yeongcheon is applied as a study area, securing water resources of 14 million tons are predicted be secured and the flood control of 15.4 million tons is expected, in comparison with operation of the existing dam only. Consequently, Blue dams are supposed to carry out the function of securing water resources, controling flood, maintaining eco-environmental instream flow, generating hydroelectric power, and providing spaces for recreational activities.

• 한국농공학회지
• /
• 제39권5호
• /
• pp.86-96
• /
• 1997

The arrangement of small streams in rural area, in the past times, attached importance to the prevention of flood damage through the straightening and lining of streams. Recently, the way of small stream arrangement is introducing the idea of water friendly environment or friendly space. As a result, there has been much concern with water favorable river management model which may lead to control flood. However, it is very difficult to develop a model applicable to all types of rivers, since each river has different flow velocity, flow amount and unique ecological characteristics. In this study, photo processing technique, one of landscape simulation methods, has been adopted because it helps to visually express and comprehensively evaluate pre and post scenery and easily applicable. Some important guideline and technique for the planning of small stream landscape arrangement are mentioned in this study. The simulation system for acquiring water favorable space and arranging landscapes needs to develop database which can forecast various types of landscape. It may also be used for the bases of planning and designing river environment arrangement. Computer aided image processing system enables to make selective planning in river environment arrangement. It may also enables to develop the methods for river environment development, ecology conservation, and multipurpose space utilization. Moreover, it makes economic river arrangement by applying river environment arrangement methods relevant to geographical characteristics. There are some limitations in this study, such as shortage of exact investigation on the stream direction and velocity in landscape arrangement. Continuous monitoring and research may be required to develop techniques through the application of computer graphics and digital image processing.

• 국제학술발표논문집
• /
• The 6th International Conference on Construction Engineering and Project Management
• /
• pp.54-55
• /
• 2015

Increase of impervious areas due to expansion of housing area, commercial and business building of urban is resulting in property change of stormwater runoff. Also, rapid urbanization and heavy rain due to climate change lead to urban flood and debris flow damage. In 2010 and 2011, Seoul had experienced shocking flooding damages by heavy rain. All these have led to increased interest in applying LID and decentralized rainwater management as a means of urban hydrologic cycle restoration and Natural Disaster Prevention such as flooding and so on. Urban development is a cause of expansion of impervious area. It reduces infiltration of rain water and may increase runoff volume from storms. Low Impact Development (LID) methods is to mimic the predevelopment site hydrology by using site design techniques that store, infiltrate, evaporate, detain runoff, and reduction flooding. Use of these techniques helps to reduce off-site runoff and ensure adequate groundwater recharge. The contents of this paper include a hydrologic analysis on a site and an evaluation of flooding reduction effect of LID practice facilities planned on the site. The region of this Case study is LID Rainwater Management Demonstration District in A-new town and P-new town, Korea. LID Practice facilities were designed on the area of rainwater management demonstration district in new town. We performed analysis of reduction effect about flood discharge. SWMM5 has been developed as a model to analyze the hydrologic impacts of LID facilities. For this study, we used weather data for around 38 years from January 1973 to August 2014 collected from the new town City Observatory near the district. Using the weather data, we performed continuous simulation of urban runoff in order to analyze impacts on the Stream from the development of the district and the installation of LID facilities. This is a new approach to stormwater management system which is different from existing end-of-pipe type management system. We suggest that LID should be discussed as a efficient method of urban disasters and climate change control in future land use, sewer and stormwater management planning.

• 한국산림과학회지
• /
• 제78권2호
• /
• pp.228-241
• /
• 1989

1987년(年) 7월(月) 21일(日)에서 23일(日)까지 3일간(日間) 우리나라 중부지방(中部地方)에서 호우재해(豪雨災害)가 막심(莫甚)하였는데, 그중에서 충남(忠南) 부여(扶餘), 서천(舒川), 공주(公州), 보령(保寧), 청야지방(靑陽地方)에서 산사태(山沙汰)-토석유(土石流) 재해(災害)로 인명피해(人命被害)가 큰 곳을 조사(調査)하여 산사태재해(山沙汰災害)의 특성(特性)을 분석(分析)하고 또 재해대책면(災害對策面)에서의 예방대책(豫防對策)을 수립(樹立)함에 필요(必要)한 자료(資料)를 도출해 보고저 이 연구(硏究)를 수행하였다. 인명피해(人命被害)가 발생(發生)한 산사태(山沙汰)는 주로 7월(月)22일(日) 아침 6~8시 사이에 많이 발생(發生)되었는데, 그 주원인(主原因)은 집중호우(集中豪雨)(지역내(地域內) 3일(日) 연속강우량(連續降雨量) 300~673mm 정도)에 기인되었다. 산지(山地) 사면붕괴(斜面崩壞)를 방지(防止)하기 위해서는 지형적(地形的)으로 산지사면상부(山地斜面上部)의 곡두(谷頭)hollow 위치(位置)에 대한 붕괴억지대책(崩壞抑止對策)이 필요(必要)할 것이며, 위택(位宅)뒷산에서의 밤나무조성작업(造成作業)과 같은 토지이용변경목적(土地利用變更目的)에는 특히 사면배수계통(斜面排水系統)의 교란이 없도록 유의해야 될 것이다. 산사태재해예방(山沙汰災害豫防) 및 피난(避難)등에 대한 주민의식수준(住民認識水準)에서는 문제점이 많이 나타났음으로 민방위교육이나 반상회 등을 통하여 보다 몸에 닿는 풍수해예방대책홍보교육(風水害豫防對策弘報敎育)을 실시해야 될 것이다. 산사태재해대책상(山沙汰災害對策上)으로도 도로(各道) 치산사업소(治山事業所)를 축소하거나 사방전문직(砂防專門職) 기술인력자원(技術人力資源)을 감축해서는 아니될 것이며, 산림청(山林廳)의 "산사태위험지(山沙汰危險地)" 지정기준(指定基準) 및 조사방법(調査方法)에 대한 사방공학적(砂防工學的) 측면(側面)에서의 근본적인 연구(硏究) 검토(檢討)가 요망(要望)된다.

• 한국지형학회지
• /
• 제25권3호
• /
• pp.71-87
• /
• 2018

As part of further study on Gwangseungri coastal deposits which occurred at 10 ~ 15m above sea level and was analyzed as palaeo-coastal flood-type sediments, six burial ages of six additional samples from the two cross sections (KST1 and, KST2) near to the points of the past study were estimated and the geochemical analysis was performed. Further investigation on the cross section KST1 revealed a reversal of the burial age at the bottom of the section which was identified as palaeo-flooding sediments and supposed to have been buried about 350 years ago. At the lower part of the KST1, the burial age of the sediment layer was estimated to be 3,800 years. The lower part of KST2 sediments was identified as sediments that was formed about 6,600 years ago and about 20,000 years ago. Considering the inclination of the sediment layers, the coastal flooding sedimentsreported to have formed 700 years ago in the previousstudy are located at the top and the KST1 section analyzed in thisstudy seemed to be connected to the lower part. The chemical analysis showed that the relationship between these layers was not continuous but had a discontinuous characteristic influenced by a specific event, and the chemical composition also showed a rapid change. If we judge these together, the lowest part of Gwangseungrisediment layerseemed to have formed during the last glacial period but it was hard to find its origins clearly. On top of this layer, a fine sediment layer containing gravels was also formed.Itseemed thatsedimentation did not occur continuously, but was affected by temporary events in such a way that after a sediment layer was formed, it stopped. Since then, a coastal flooding event occurred about 700 years ago, and part of flooded sediments accumulated in the rear slope. After that, when a flood layer including additional granular materials about 350 years ago was formed, sedimentation along the slope seemed to have occurred.

• 한국응용과학기술학회지
• /
• 제40권2호
• /
• pp.355-362
• /
• 2023

영상매체에 등장하는 캐릭터는 성향이나 역할에 따라 상징적인 의미가 다르다. 『산해경』은 B.C. 3~4세기경에 지어진 판타지 소설로 중국의 고대 소설에 등장하는 캐릭터는 유형에 따라 재해를 비롯한 재물, 질환 등 다양한 의미와 상징성을 가지고 있다. 중국인이 생각하는 동물의 상징성과 판타지 소설에 등장하는 캐릭터의 상징성, 그리고 형태적인 분석은 중국의 캐릭터 개발 및 영화 산업에 필요하다. 본 연구는 중국 고전 판타지 소설 『산해경』,『산해경도상전체』, 『산해경도』와 청나라시대의 『산해경존』, 『산해경도록』을 중심으로 캐릭터 이미지를 분석한 결과 첫째, 삽화 이미지에서 캐릭터의 형태가 조금씩 차이를 보이고 있다. 둘째, 산해경의 453개의 캐릭터 중 수해와 관련된 캐릭터는 8개로 '장우', '합유', '화사', '영령', '부제', '승우', '만만', '나어'로 출현만으로도 홍수 및 장마와 같은 수해를 일으키는 캐릭터로 묘사되어 있다. 셋째, 현실 동물과 산해경 캐릭터에 등장하는 캐릭터의상징적인 의미와는 별도로 사물과 동식물이 결합된 창작 캐릭터임을 알 수 있다. 산해경의 지속적인 캐릭터 분석은 영화산업에 광범위하게 활용될 수 있다고 사료된다.

• 한국수자원학회논문집
• /
• 제44권11호
• /
• pp.853-861
• /
• 2011

본 연구는 연속형 강우-유출모형과 관측유량 자료동화기법으로 앙상블 칼만필터 기법을 연계한 SURF 모형을 낙동강유역에 적용하여 하천유량예측의 적용성을 평가하고자 하는데 그 목적이 있다. 낙동강유역을 43개 소유역으로 구분하고 2006년과 2007년의 홍수기간 동안 12개 평가지점에 대해 유출모의를 수행하였다. 관측유량 자료동화 효과로 인해 예측유량의 정확도가 향상되며 1~5시간의 예측선행시간별 유효성지수를 분석한 결과 자료동화로 인해 46.2~30.1%의 모의유량의 정확도가 개선되는 것으로 나타났다. 또한 관측강우의 50%를 적용하여 자료동화 전 후의 모의 첨두유량에 대한 평균정상절대오차를 비교하였으며 자료동화로 인해 40% 이상의 정확도가 향상됨을 확인하였다. 이상의 결과로부터 SURF 모형은 낙동강유역의 실시간 하천유량예측에 활용될 수 있을 것으로 판단된다.

• 한국농촌건축학회논문집
• /
• 제20권4호
• /
• pp.53-64
• /
• 2018

Disasters that occur most frequently in rural areas are drought, flood, damages from wind and cold weather. In order to overcome the damage caused by natural disasters, various projects related to safety and disaster prevention. However, Government-centered disaster recovery operating system showed difficulties to utilize the natural scenery and ecological environment of rural villages. So the participation of the residents is necessary. Therefore, this study aims to find a more effective disaster recovery direction by suggesting the application method, Inhabitant-friendly improving a village environment contents in Rural Disaster Villages, for continuous disaster management. The research methods were literature analysis, interviews, and expert discussion. As a result, it was found that the rural disaster village environmental improvement facilities, inhabitant-friendly recovery system, and inhabitant-friendly village environment contents and suggests a application method of inhabitant-friendly village environment contents. The research will be used as basic data when preparing a guide for improving the environment for residents in rural villages.