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金哲淳,林煥大,金雲中 조선대학교 국토개발연구소 1989 국토개발연구 Vol.9 No.1
This study places emphasis on invastigation each average rainfall record of the period of twenty years on the main districts(Kwangju, Mokpo, Yeosu) of Kwanju and Chunnam, and extracting the actually mesured amount of consistent rainfall per minute(10, 20, 30, 40, 60, 80, 100, 120, 180, 240, 300, 360, and 720 minutes). In order to study this paper, the caculation of probability rainfall amount selected four method(Formality distribation, Logarithm formality distribtuion, moment and Gumbel-chow method), and four appropriate types(Talbot, Sherman, Japanese and Semi-log types) for a Korean rainfall characteristic among various types are selected, the induction of optimal rainfall intensity formula is computerised, and laber saving and thechnical improvement is designed. The are as follows. 1. Semi-log type is suited to Kwangju district, and an average fit extent appeared to be 92.6%. 2. Japanese type is suited to Mokpo and Yeosu districts, and an average fit extent appeared to be 95.9% and 95.2%. 3. The average fit of this study's formulas appeared more high than the existing formulas.
小規模貯水池에 있어서 물넘이의 設計降雨量算定에 關한 硏究
金哲淳 조선대학교 국토개발연구소 1980 국토개발연구 Vol.2 No.1
In the spillway design of small reservoiers, the outflow of severe rainfall shorter than an hour is a diffisult problem. To calcurate the outflow, two Rainfall Intensity formula may be used. Thet are Exact calaulation method and Specific coefficient method. In this paper, comparing with these two methods, I havw obtained following results. 1) Depending on the Exact calculation method, Japanese type is applied better than other types in logarithmic normalization method and Gumbel-Chow method. 2) Depending on the Exact calculation method, Sherman type is applied better than other types in moment method. 3) The caseⅢ type by the Specific coefficient method is applied better than given data. 4) The calculation of probable Rainfall Intensity by the Specific coefficient method is more simpler than the Exact calculation method. 5) Therefore, Specific coefficient method can be applied to spillway design of the time of concentration shorter than an hour in small reservoiers.
特性係數法에 의한 確率降雨强度式 誘導 : 高興, 長興地方을 中心으로 on the kohung and changhung district
金哲淳,金雲中,表永平 조선대학교 국토개발연구소 1996 국토개발연구 Vol.16 No.1
This study has for the extract on invastigation the rainfall intensity lasting for 10 minutes. 60 minutes and we applied to this study the Isiguro characteristic coeficient value which is simple in calculation and is high in application in order to induce the Rainfall intensity formula of Kohung and Changhung that south seacost districts of Korea and then it was induced with three formula(Talbot, Sherman, Japanese) and comparatively analyzed again by the root mean square error. We would propose the Sherman method with the least error for the suitability in these districts. This formula will be the most economical and reasonable plan in making drainage plan in the Kohung and Changhung districts.
金哲淳,文完錫 조선대학교 국토개발연구소 1988 국토개발연구 Vol.8 No.1
Among the characteristics of the river geomophology, meander is a considerable problem in river channel because of its maintenances. To analyse the meander characteristics, the ideal model was used but the references and the methods of the geometrical parameters can be changed on account of personal preferences. In this study the meander characteristics of the Bosung River were analysed by using the linear generalized algorithm which is newly developed method, and to eliminate the demerit of the modelling of the river configuration, it was applied the statistical method. The results showed that the variances of the curvature parameter can be a index to analyse the intensity of the meander, and the kurtosis showed to be a parameter that indicate the inear intensity of the river.
金哲淳 조선대학교 동력자원연구소 1985 動力資源硏究所誌 Vol.7 No.2
The purpose of this paper is to study and analyze the basic elements of the river basin morphology, the stream morphological characteristics, and the meandering characteristics of Tamjin river basin, the soutmost river in Korean Peninsula, and to provide the necessary informations for water utilization projects of Tamjin river. 1. The basic elements of the basin morphology, such as the average width, height, and density are quantified. 2. Analyzing on Horton's three laws on the stream morphology, it is found that the laws are well suited to the river. 3. There are high correlations between the river basin characteristics and the channel characteristics, that is, between the stream length and the river basin area, and between the relative height and the relative area. 4. We also find that the proportional stream order has a high correlation with the drainage area.
金哲淳 조선대학교 국토개발연구소 1979 국토개발연구 Vol.1 No.1
Estmating the quantity of outflow of short-time rainfall, which is troublesome problem, in urban Sewerage Planning, there are various of Rainfall-Intensity Formula. Among them three types such as I=a/(t+b), I=a/tⁿ, I=a/(√t+b) are widely used. Where t denotes rainfall duration in minutes, and the constants a, b and n are generally determined by either of the following tqo method: 1) Based on long-term observation values, Probability is calculated for each mintues(10,20,60,…80,120 min.)rainfall intensity is derived for the same return period, and finally the values for these constants are determined by mean of least square fitting.(Exact calculation method). 2) On the premise that "All the Rainfall-Intesity curve can be expressed multiplying the coefficient which represents inclination of the curve by Rainfall-Intesity of an hour." Dr. Isiguro expressed the Rainfall-Intensity for N-year probability in the form I_T=K_T. r_t where r_T and K_T denotes 1-hour rainfall and specific coefficient for N-year probability, respectively, and the latter can be determined by 10 and 60 minutes rainfall only.(Speific coefficient method). In this paper, though comparative study on the fitness of Exact calculation method and specific coefficient method in Sewerage planning of Gwang ju area, I have got following conclusions. 1. Exact calculation method applies better for return period T=20,30,50 years than specific coefficient method. 2. Specific coefficient method applies brtter for return period T=3,5,10 years than Exact calculation method. 3. There are little difference in suitability those of two methods for t ganging from 10 to 60 mintues and from 10 to 120 mintues. 4. Therefore, Specific coefficient method is more suitable partly in accordance with return period.