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在“八五”国家科技攻关项目研究过程中，结合拉西瓦泄水孔进行了斜交门槽的压力特性和空化特性的试验研究。研究结果表明，泄水孔的门槽与流道斜交后，其压力分布具有明显的空间性质，用最小压力系数能较好地表征斜交门槽的压力特性；槽内３个壁面、槽下角隅两侧以及错距后斜坡上的最小压力均随斜交角的增加而减小；斜交门槽初生空化数随斜交角的增大而增大，这意味着斜交门槽比正交门槽更易发生空化现象。
In the “Eighth Five-Year” national science and technology research project in the process of research, combined with Laxiwa scuppers, the pressure cross-sectional characteristics of the portal and cavitation characteristics of experimental study. The results show that the pressure distribution of the gate groove and the flow channel of the drainage hole has obvious spatial properties. The minimum pressure coefficient can characterize the pressure characteristics of the cross-sectional gate groove. The three walls of the groove, The minimum pressure on both sides of the lower corner and on the slope after the offset decreases with the increase of skew angle. The number of primary cavitation in skew gate increases with skew angle, Crossing the door more prone to cavitation.