论文部分内容阅读
本文是葛洲坝水利枢纽南京泥沙模型河势试验的总结。试验表明,建坝后所形成的河势是典型弯道,而大江航道和电站处于弯道的凸岸,泥沙淤积严重。为了解决这个问题,试验了双槽方案和单槽方案,而前者优于后者。在单槽已定的情况下,除了大江在总流量35,000米~3/秒时敞泄以外,在大江电站右侧设置泄水闸,使大江分流比保持50%左右,就能较好地解决大江航道、电站的淤积和减少粗沙通过机组,并能改善大江下游航道水流条件和降低大江电站下游尾水位。文中提出了低水头径流枢纽河势的规划原则。
This article is a summary of the river regime test of Nanjing sediment model in Gezhouba Hydropower Station. Experiments show that the river formed after dam construction is a typical curve, while the large waterway and power station are located at the convex bank of the curve, causing serious sedimentation. In order to solve this problem, the two-slot scheme and the single-slot scheme were tested, while the former is superior to the latter. In the case of a single tank has been set aside, in addition to the river at a total flow of 35,000 m ~ 3 / s when the open vent, the right side of the Dajiang Power Station to set the sluice, so that the diversion ratio of about 50% to better solve the river Silting up of waterway and power station and reducing coarse sand through the unit, and can improve the water flow conditions in the lower reaches of the Great River and lower the tailrace level of the Dajiang Power Station. In this paper, the planning principle of river head with low head runoff is proposed.