前言我省各灌区已大量推广应用U形断面渠道,而量水设施大多仍沿用适应于梯形渠道的巴歇尔量水槽。由于U形渠道在同流量下的水深一般超出梯形和矩形渠道的水深,使巴歇尔量水槽形成高度淹没,造成测流困难,因此,很有必要适当研究适宜于U形渠道测流的新型的量水设施。 Preface Irrigation areas in our province have promoted the use of a large number of U-shaped cross-section channels, and most of the water facilities are still used to adapt to trapezoidal channel Parschel sink. Because the water depth of U-shaped channel generally exceeds the water depth of trapezoidal and rectangular channels, the Parshall-type water trough is highly submerged, which makes it difficult to measure current. Therefore, it is necessary to properly study the new type of suitable U-shaped channel flow measurement The amount of water facilities.