| 英文摘要 |
This paper is a study based on two stations at the Pa-Chang Chi called Chun Huei Station and Yi Chu Station. This study consists of taking data from the period of 1972-1981, using the hydraulic characteristic of the largest discharge of water. The methods used were nonlinear resistance relationship approach, Einstein and Barbarossa method, and Engelund method. The average velocity of these methods is used to analyze the data looking at the relationship of Froude number、D/dsand the energy slope. This study is attempts to find the suitable formula for this river section. The bed of river of Chun Huei Station consists of gravel. This study shows most of the value of are under 0.06 which means the bed form will not exist. After analyzing the calculation’s graphics, the average velocity formula for the Chun Huei Station are Einstein and Barbarossa method found to be more suitable. The bed of river of Yi Chu Station consists of sand. Therefore, the bed form will exist. The Einstein and Barbaroosa and Engelund Formula are suitable methods to use. The Engelund formula shows the difference of the irregular velocity and depth of the river. The calculation’s graphics show the range of energy slope to be wide. It is not easy to deside definitely. Therefore, we should build an assistant station at upstream and downstream in order to measure the slope of the water. |
