Seite - 340 - in Book of Full Papers - Symposium Hydro Engineering

calculation results and the data measured in 2000 will be compared. The inflow water level adopted for the sedimentation calculation is the average monthly water level recorded at Jiajiu Station from 1996 to 2000. The average monthly operating water level of the Manwan Reservoir from 1996 to 2000 is adopted as the water level in front of the dam. See Figure 4 for the comparisons between the calculated and the measured sedimentation longitudinal sections in 2000; See Table 3 for the Comparison Between the Calculated and the Measured Sedimentation Volumes. Table 3 Comparison of the parameter-calibrated sedimentation results Time Measured Sedimentation Volume (10,000 m3) Calculated Sedimentation Volume (10,000 m3) 1996 - 2000 13402 13270 Fig. 4 Comparison of Sedimentation Longitudinal Section of the Reservoir in 2000 (Model Calibration) According to the calculation of the sedimentation longitudinal section, the sedimentation thalweg point of the section in front of the dam is slightly lower, while that of the section at the tail of the reservoir is slightly higher. From the total sedimentation volume point of view, the measured and the calculated results are almost consistent. On the whole, the calculation can basically reflect the actual sedimentation, but the calculated sedimentation of the tail section is slightly higher than the actual situation. When analyzing the impact on the Xiaowan HPP, it will be safer. 340