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船队进出闸门上下引航道口门区,必须安全可靠。大坝溢流、电站引水和泄水时,上下引航道口门区的水流对船队航行有一定的影响,而对航行最危险的是和航行方向垂直的横向分流速,因此在船闸的总体布置中应给予充分地考虑。 四川山区河流弯多水急,在水利枢纽中要选择满足口门区限定流速值的船闸位置往往遇到困难,加上四川水利部门经常利用河弯兴建裁弯取直的引水式电站,迫使船舶也走裁弯取直之路,致使口门区的航行条件更
The fleet should be safe and reliable when entering or exiting the gate. When the overflow of a dam, the diversion of a power station and the discharge of water, the water flow at the entrance area of the upper and lower guideways has a certain impact on the navigation of the fleet, and the most dangerous for navigation is the transverse split velocity perpendicular to the navigation direction. Therefore, Should be given full consideration. In Sichuan, mountainous rivers tend to be more water-prone. It is often difficult to select the position of shiplock that meets the limited flow velocity value in the port area. In addition, Sichuan Water Resources Department often uses river bend to build diversion-type diversion power stations, forcing ships Also take the straight cut straight road, resulting in the gate area of navigation conditions more