Page - 728 - in Book of Full Papers - Symposium Hydro Engineering

Correlation analysis between vibration acceleration of hydroelastic model measuring points and vibration displacement of T9 (Fig. 7) show the coefficients between vibrations of the model stilling pool base and the prototype ground were 0.84. Furthermore, the correlation coefficient between the vertical acceleration of other measuring points in the model and measured vertical displacement, or vertical acceleration of T9, was high (0.71 ~ 0.89). These correlation coefficients indicate that the test results can effectively reflect actual discharge conditions. 5. THE EXPERIMENTAL RESULTS When model verification effectiveness was undertaken, it was found that the vibration intensity of the downstream area had a close relationship with flood discharge volume and mode, such as the opening way of surface holes and mid- level outlets, the changing of the water level upstream or downstream, etc. Therefore, the influence of these factors on ground vibrations was studied by the principle of controlling a single variable factor. The vibration prediction results of measuring point T9 under the different influencing impact factors of the experiment are shown in Fig. 8 to 12. 0 2 4 6 8 10 0.4 0.8 1.2 1.6 2.0 Opening rate of mid-level outlet (m) Upstream water level is 380m Upstream water level is 370m 4 8 12 16 20 24 0.4 0.8 1.2 1.6 2.0 Opening rate of surface hole (m) Upstream water level is 370m Upstream water level is 380m Fig. 8 Prediction results of vertical vibration acceleration of measuring point T9 with mid-level outlet discharge Fig. 9 Prediction results of vertical vibration acceleration of measuring pointsT9 with surface hole discharge 728