漢江下流部 水害輕減을 爲한 調査 硏究 = A Study on the Flood Damage Reduction at the Downstream of the Han River

다국어 초록 (Multilingual Abstract)

The effect of reducing flood magnitudes, flood stages, and flood damage by upstream reservoir regulation are investigated in this study.
The analytical procedures which has been established newly, are treated through this study for 7 index stations and same numbr of reaches.
The method of this study could be expressed briefly as following procedures. Using stage-frequency relations and the potential damage survey data, damage-frequency relations are established, and from this, average annual flood damages computed. By holding out portions of the floods with various amounts of flood control storage in 6 reservoirs in the basin, routing were made to establish modified stage-frequency relations. From damage frequency relation, average annual damages are computed with and without condition of each control volume.
The study result are concluded as follows;
(1) The relationtship of corresponding water level between nearby stations are useful tools to adjust error of the data due to observation error and change of the gaging location.
(2) The number of records about 10 years could not be applied for the statistical methods of flood frequency analysis.
(3) The regional skew factors are recommended to apply flood frequency study by the log-Pearson Type III method.
(4) The effect of damage reductions are greatly affectedin accordance with the routed flood.
Therefore application of the Typical Tributary Contribution Flood are reasonable for this type of study.
(5) In the North Han, effect of damage reduction due to the lacation of control point are gradually increased from upstream to downward until the confluence of North and South Han.
(6) In the South Han, control effect are increased from Chungju to Yeoju where the maximum effect are analyzed and then decrease gradually until the confluence.
(7) Better hydrologic and topographic combinations for the flood control are existed in South Han to compare with North Han in this study results.

목차 (Table of Contents)

• 1.緖言
• 2.資料 및 方法
• 3.水害經濟調査
• 4.洪水 解析
• 5.年平均被害額의 推定
• 6.調節效果 分析
• 7.結論