巴音沟河渠首泄洪闸冲刷模型试验研究

Experimental Study on Owerflow Capacity of Spillway Sluice at the Headwork of Bayingou River

对拟除险加固的巴音沟河渠首引水枢纽开展水工模型冲刷试验。试验结果表明:设计洪水时(流量322m3/s)内库上坝(坝顶高程876.2m)坝前水面高程875.7m,较坝顶低0.5m,在校核洪水时,坝前水面高于坝顶出现漫溢,建议加高内库上坝高度;2种工况下冲刷坑基本趋于稳定。

The scour test of hydraulic model is carried out for the diversion project of bayingou river head to be reinforced. The test results show that the elevation of the water surface in front of the dam is 875.7 m, which is 0.5 m lower than the dam crest during the design flood(flow of 322 m3/s). During the check flood, the water surface in front of the dam is higher than the dam crest, so it is suggested to increase the height of the upper dam of the internal reservoir. Under the two conditions, the foundation of the scour pit tends to be stable.