Research On Automatic Water Sluice Gate In The Use Of High Silt Concentration Flood Resource

Use of silt-laden and hyper-concentration flood resource is one of supplements of water resource shortage in our country. In order to using the flood resource sufficiently, we analyze the water height data of Liugoulongtouguai station on the west bank of river. The conclusion is that the flood is hyper-concentration and burst. Base on the feature of the flood, diversion works can be built. Most of the flood can be spreading in the case of little flood, and it can refill ground water of desert, at the same time it releases the problem of sediment accumulation of lower stream. Because it is remote, so we hope to sue automatic water sluice gate and start and stop according to the design criteria. Automatic water sluice gate is under the waterpower and action of gravity, in the given water height condition; and it start and stop automatically as the flux change. Now automatic water sluice gates are almost use in clear water stream, while in hyper-concentration stream is seldom. Because the flood is hyper-concentration and burst, it needs to design a new type automatic water sluice gate. This test adopts the late model automatic water expansion cylinder sluice, which designed by professor Wenheng (Inner Mongolia Agricultural University). Clear water hydraulic model test was done, and the result verifies that the late model automatic water expansion cylinder sluice can start and stop automatically. According the scheme comparison and analysis of experiment data, we get the main factors that influent the water depth when the automatic water expansion cylinder sluice is start. Then we do the theoretical calculation and verify the experiment data. Silting experiment verify that automatic water expansion cylinder sluice can start and stop automatically, but the water depth increases when the sluice is open. According differential analysis of experiment data and theoretical result, we get the theoretical formula in designing automatic water expansion cylinder sluice in clear stream.