호안사빈의 단면변화 추정을 위한 수치 모델<해운대사빈 단면변화의 추계학적 특성>

함계운,박준일 한국수자원학회 1981 한국수자원학회 학술대회 Vol.1981 No.1

Radiation Shear Stress에 의한 沿岸流 流速分布 特性에 관한 解析(2) : 水評混合應力을 考慮한 경우

咸契運 慶尙大學校 1984 論文集 Vol.23 No.2

1. 孤立波理論을 適用한 碎波帶內에서의 沿岸流流動分布는 포물선 分布임이 確認되었다. 2. 沿岸流 流動의 變化에 支配的인 因子는 底面摩擦임이 確認되었다. 3. 本人의 沿岸流流動分布曲線의 理論値가 徵小振幅波 適用時의 값보다 다소 큰 값을 보이고 있다. 앞으로 亂類에서의 Reynold 應力을 고려한 沿岸流流速의 變化도 계속 究明하고자 한다. In this paper, author intented to discuss the Longshorecurrents characteristics in the breakzone with the Radiation Shear Stress concept in the consideration with the effect for the Lateral Mixing Friction (Lx). And author calculated longshore-current velocity variation according to wave condition. Discussed and calculated results are as follows ; 1. The longshore-currents distribution are parabola from breaking point to shoreline by solitary wave theory. 2. Maximum velocity point exist in breakzone. 3. The bottom friction is the most factor affecting the velocity of Longshore-Currents.

원형 파일의 파압분포특성에 관한 실험적 연구

함계운,박준일,장대정 경상대학교 생산기술연구소 2003 工學硏究院論文集 Vol.19 No.-

The computation of the water wave forces on offshore structures is one of the primary tasks in the design of the structures. It is also one of the most difficult tasks since it involves the complexity of the interaction of waves with the structures. The Morison equation assumes the wave force to be composed of inertia and drag forces linearly added together. The purpose of this paper is to investigate the wave forces acting on the cylinderical piles. Author set up a cylinderical piles model into 2 dimensional regular wave tank with vaned wave height, water depth, and wave period, and observed wave forced. In practice the wave forces depending on wave height, water depth, and wave period were predicted through the experimental model test. It is presented a good tool to predict qualitatively the wave forces acting on the cyinderical piles.

潛提工 設置에 따른 防波堤 前面에서의 波壓分布特性

咸契運,柳志泫 경상대학교 생산기술연구소 2000 生産技術硏究所論文集 Vol.16 No.-

Rapid industrial development since 1960s and the consequent increase of foreign trades result in the shortage of harbor capacity. Thus, the coastal and harbor development accompanying the construction of coastal structures like breakwaters and sea-wall have been increased. In the analysis of the wave pressure acting on the structures, the small amplitude wave theory has been frequently emp1oyed due to its mathematical simplicity. Thus, it is necessary to simulate the nonlinear wave phenomena numerically for more accurate design of coastal structures. The purpose of this paper is to investigate wave pressure in front of breakwaters by the experimental model test. Wave pressure characteristics by existence or without existence of submerged breakwaters made a conclusion that wave pressure of existence of submersed breakwaters were found to be less than those experienced in without existence of submerged breakwaters, because of wave reflection by submerged breakwaters.

南海岸 島嶼沙濱의 底質漂砂特性에 관한 硏究

함계운 慶尙大學校生産技術硏究所 1997 生産技術硏究所論文集 Vol.13 No.-

Sediment characteristics on beach are the most of one element for the sandy coast process cycle. In coastal engineering region, sediment chraracteristics determined by the sediment grain size and distribution, shpe, sorting coefficient by the waves and currents etc. In this report, author investigated and analysed on plane shape of beaches and sediments characteristics, such as grain size, skewness, sorting coefficient, beach profile gradient, color of sediment at south coast islands beaches. And author will make evolution for the beach development design with data.

Transition Matrices에 의한 海雲台海濱斷面의 遷移解析

咸契運 慶尙大學校 1982 論文集 Vol.21 No.1

In many geologic investigation, a data sequence may be created which consist of a succession of mutally exclusive state. An example includes point-count traverse across thin section, where the state consist of the minerals noted at succeeding points. However, now our interst is in the nature of transitions from one state to another, rather than in the position of states in the sequence. We will consider techniques which sacrifice all infromation about the position of observation within the succession, but which provide in return information on the tendency of one to follow another. In this paper, author studied for the deformation of beach profile by transition matrics. And then, will understanding for the nature of the transition in beach profile's process. Used basic transition model is 6 major transition model proposed by Sonu and Beek.

학동 해빈의 침식에 관한 조사·연구

함계운,김진홍,장대정 한국해안해양공학회 2002 한국해안해양공학회 논문집 Vol.14 No.1

해안의 침식, 하구 및 항로, 항내매몰 등에 관한 저질이동에 기인한 해저지형 변동현상은 해안재해라는 측면에서 오래전부터 사회문제로까지 확대되어 그 문제점이 지적되어져 왔으며 최근에는 해안환경의 보전이라는 관점에서 환경영향평가의 중요 항목으로 인식되어 문제의 재현 및 예측과 대책방법이 절실히 요구되고 있는 중요한 과제이다. 본 연구의 대상지역인 학동해빈은 1996년 기존 돌제형식의 선착장을 연장한 이후 해안선 부근에서 침식현상이 진행되고 있다. 따라서, 학동 자갈해빈의 침식원인을 규명하기 위하여 현장관측을 통한 단면측량 결과 및 One-line 모델을 사용하여 침식원인을 규명하고자 하였다. 그리고 Sonu와 Beek(1971)가 제시한 해수면상 저류표사량 산정모델이 자연해빈뿐만이 아니라 해안 구조물이 설치된 학동 자갈해빈에도 유용한 모델임을 입증하였다. The changes of sea bottom configuration, which may cause the coastal disasters, have been considered as social problems. It is obvious that the beach deformation is attributable to the sediment transport associated with erosion and siltation in coastal areas such esturies, channel and harbors. The prediction method and countermeasures far them, however, are not on the level of satisfaction, which indicates that make efforts should be made on developing them. Groin was constructed at Hak-Dong gravel beach to embark ship at 1996, as a result region of right of groin, severe erosion of beach is proceeding till now 1999. In this study, based on the field measurements, involved the one-line theory model which was selected for the prediction of shoreline change to prepare coastal protection methods of Hak-Deng gravel beach. Author found that the storaged sediment estimation model by Sonu and Beek(1971) is useful model at the Hak-Dong gravel beach by the use of topographical survey data from September, 1998 to September, 1999.

현장관측을 통한 상주해빈 단면변화의 정성적 해석

함계운,장대정 한국해안해양공학회 2004 한국해안해양공학회 논문집 Vol.16 No.2

본 연구는 상주해빈의 침식현상을 진단하기 위하여 해빈 단면 측량결과 및 저질 조사결과를 기초로 하여 해빈의 천이주행 특성 및 각 단면별 저류표사량을 산정 하여 해빈 보호 대책을 수립하기 위한 기초자료를 제시하고자 한다. 현장관측을 통하여 상주해빈에 침식방지의 기능을 도모하고자 설치한 돌제가 역기능을 나타내고 있음을 알 수 있었다. 이러한 이유는 도류제가 건설된 후 침식이 가속화되어 침식방지의 기능을 위하여 설치한 돌제가 침식방지의 기능보다는 침식을 가속화시키는 것으로 조사되었다. 그리고 Sonu and Beek(1971)가 제시한 해수면상 저류표사량 산정모델이 자연해빈뿐만이 아니라 해안 구조물이 설치된 해빈에도 유용한 모델임을 입증하였다. The changes of sea bottom configuration, which may cause the coastal disasters, have been considered as social problems. It is obvious that the beach deformation is attributable to the sediment transport associated with erosion and acceration. The prediction method and countermeasures for them, however, are not on the level of satisfaction, which indicates that efforts should be made on developing them. In this study, it is found at the groin constructed in Sangju beach on e purpose of beach protection did the aversive function. The reason for this was judged that they accelerated the speed of erosion by increasing the velocity wave-induced current rather than brought storage effect of sediment. Authors found that the storage sediment estimation model by Sonu and Beek(1971) is a useful model at the Sangju beach with the use of topographical survey data from July, 1987 to March, 2003.

쌍곡선 모형에 의한 삼천포 항내 정온도 분석

함계운,박준일,장대정 경상대학교 생산기술연구소 2003 工學硏究院論文集 Vol.19 No.-

The calmness inside a harbor plays an important role in the appropriate disposition of harbor structures. However, it is not easy to get the accurate computational results because it is affected by many factors concerning with the wave transformation. Recently, numerical model tests which are more economic and rapid than hydraulic model experiments, are carried out for the purpose of analyzing wave height distribution in harbors. This paper presents the numerical model which is able to calculate wave height inside a harbor. It is based upon the time-dependent mild slope equation involving wave refraction, diffraction, shoaling effect and reflection. In particular, the arbitrary reflectivity is used at the boundary in order to simulate the real harbor reflection condition. The proposed numerical model is applied to Samcheon port in order to investigated harbor calmness.

尙州海水浴場의 砂濱侵蝕 原因과 養濱對策

咸契運 慶尙大學校生産技術硏究所 1987 生産技術硏究所論文集 Vol.3 No.-

Coastal development can affects coastal zone process as follows ; 1. Change the rate of sediment supplied to the coast. 2. Characteristics of sediment supplied to the coast. 3. A justing the level of wave energy flux to the coast. 4. Directly interfering with coastal sediment transport process. Improvement plan for HANREA National Ocean park, SANGJU Beach repaired river channel, constructed jetty and seawall. After project worked, serious erosion of beach profiles proceed now. In this study, author analyzed the causes for the eroison factors and propose the beach nourishment methods at SANGJU Beach. The results for the investigation and analysis as follows ; 1. The structures construction project of coastal development of SANGJU Beach do not regard adverse physical impacts including erosion of beach, littoral currents change and wave deformation vicinity of jetty. 2. With a weir-jetty, a off-shore breakwater, and sloped seawalls system, it is possible to improve adverse impacts of littoral net transport and to make dynamic equilibrium process.