Page - 341 - in Book of Full Papers - Symposium Hydro Engineering

The results of the parameter calibration are as follows: 1) WUHEE Zhang Ruijin formula: m is taken as 1.0; for k value, it is taken as 0.3 for the middle section of reservoir, and 0.2 for the rest sections; 2) Comprehensive Coefficient of Recovery Saturation: It is taken as 1.0 at the scouring condition, and as 0.75 and 0.5 respectively for the two groups of finest suspended sand, and 0.25 for the rest groups. 4.2. CALCULATION FOR THE SEDIMENTATION VERIFICATION The above-mentioned calibrated parameters are applied to calculate the sedimentation till the time before the flood season in 2003 on the basis of the measured terrain data in 2000. The inflow water level adopted for the sedimentation calculation is the average monthly water level recorded at Jiajiu Station from 2000 to 2002. The average monthly operating water level of the Manwan Reservoir from 2000 to 2002 is adopted as the water level in front of dam. Refer to Table 3 for the sedimentation grain classification and parameter calibration. See Fig. 5 for comparison between the sedimentation calculation and the calculated longitudinal section in 2003; and see Table 4 for comparison between the calculated sedimentation volume and the measured sedimentation volume. Table 4 Verification results of the sedimentation volume Time Measured Sedimentation Volume (10,000 m3) Calculated Sedimentation Volume (10,000 m3) 2000-2003 11234 11710 According to the verification results, the sedimentation longitudinal section is still slightly lower at the section in front of the dam and slightly higher at the section at the tail of reservoir, and the sedimentation volume is still well consistent with the measured data, which verifies that the calibrated parameters for the calculation is appropriate, and can be used for sedimentation forecast calculation of the reservoir. 341