宝珠寺水电站泄洪雾化原型观测

宝珠寺水电站雾化原型观测结果表明:右底孔单独泄洪时,水舌溅水很大部分落在左岸,最大降雨强度约为360mm/h,左、右底孔同时泄洪时,左岸最大雨强在1950mm/h以上;在常遇洪水下,左、右底孔同时泄洪时,泄洪雾化将造成防雾廊道右侧的498·7m平台的严重冲刷,对该部位必须用混凝土衬砌保护;宝珠寺坝顶及坝后开关站一般不会受到泄洪雾化的影响,水电站下游河谷开阔,泄洪水雾飘散范围宽,容易散开。不过,电厂出线距离泄洪雾化影响区很近,如果泄洪时间较长,则泄洪雾化可能会对输电安全造成影响。

Prototype observation of discharge atomization at Baozhusi Hydropower Station

The result from the prototype observation on discharge atomization at Baozhusi Hydropower Station shows that most part of the water nappe splashes on the left bank with the maximum rainfall about 360 mm/h during the flood discharge from the right bottom outlet, and with the maximum rainfall above 1 950 mm/h during the flood discharges from both the left and right bottom outlets at the same time. Under the normal flood, serious scouring on the right side of the anti-fogging gallery at el. 498.7 m is to be caused by the flood discharge atomization, and then that location is necessary to be protected by concrete lining. The dam crest of Baozhusi Dam and the switch station is normally not to be affected by the atomization. As the downstream valley of the hydropower station is wide with large splashing area, the splashing is easy to dissipate. However, the outgoing-feeder line is near to the area influenced by the atomization and then the safety of the power transmission is to be possibly impacted by the atomization, if the duration of the flood discharge is too long.