| The WuJian river is one of the main subsidiary currents of upper stream in Yangtze River, the navigation resources is abundant. Because of various reason, transport capability didn't empolder well。If YingPan ship lock is limited by existing go through ships scale and dimensions to build, the development of serious dimensions and conveyance quantity of the check and supervision ships, and produce to the development of future WuJian river's shipping graveness disadvantageous influence. Base on those, a post-research consists of two special subjects is presented in this paper according to the issue of YinPan Project in Wu River. Through a lot of computation, analysis, come up with the following preliminary conclusions.1. As for the temporary diversion channel project and the navigation period of about 22 months. In order to avoid excessive increase in project cost and design of the nullah difficult, resulting in unnecessary waste of investment to develop the flow of the diversion channel prohibited 7000 m~3 / s, the water level at this time corresponding to the dam site 193.52 m. In this flow standard for the 345-day shipping period.2. Wujiang River navigable by ship on the survey, prepared for a nullah navigable representation: 46.8×8.8×2.2m scale motorized split. The ship is a fairly large number, from top to bottom will usually carry 300 to 500 tons, with better representation. By using "river navigation standards" formula recalculations, single-channel diversion channel width of 20 m.3. The Wujiang River Beach on behalf of the ship and resistance study, the following ships from the nullah shipping routes are allowed to drop the flow rate and composition than the more appropriate standard: slope (‰) 0,1,2,3,4,5,6 the velocity (m / s) respectively 4.4,4.2,3.8,3.4,2.8,2.2,1.1.4. This study used 2-D finite element model to analyze water flow at the diversion channel is feasible. Through the use of Hung, dry and the water level in the measured velocity data validation test results show that the data model and prototype results anastomosis shows that the model can be used for the optimization of the nullah program.5. The original design (flat bottom) Test results showed that the nullah program, and open channel flow cross-section scale distributed evenly, resulting in dry season (Q <400m~3 / s), less than 2.6 m water depth. Between 3000 m~3 / s flow, open channel has been on non-flight zone through Bands, the first half of the entire drainage waters are unable to route, therefore navigable only in the period of 400 ~ 3000 m~3 / s flow range. 5000 m~3 / s flow over due to excessive flow of the route, the ship unable to twist Beach flights starting point. Results show that the transport disadvantage of the program.6. Diversion channel optimization program results showed that the four revised and amended III and IV program navigation program optimum conditions, that is, 3500 m~3 / s flow below fairways scales and flow conditions can meet shipping demands. Flood period 3500 to 7000 m~3 / s throughput, since the ship can enter the aircraft cutter Beach (starting point) to cable location can better meet shipping demands. From the shipping point of view, than the revised programⅣslightly modifiedⅢgifted program (Laws III program except 6000 m~3 / s throughput over navigation area slightly larger than, other navigable conditions and not much below the IV program); From the works of comparison, the amendment proposalⅢexcavation of less than 18079 m~3 programⅣ, backfill concrete programⅣof less than 4507 m~3. Considering that Q = 3500m~3/s flow conditions following the route the ship could meet the demand, Q = 3500 ~ 7000m~3/s, can be hanged at passing ships. Therefore, after the diversion program that the two projects of navigable conditions and integrated comparison maintained that the amendment of section III penthouse flat-bottom design of the program is better than the original program.7. According to the original concept and the cutter Beach cutter Beach traction, the recommendations of this nullah cutter Beach Rally machine equipped with not less than 15 t. Cutter Beach machine installation location in the diversion channel right bank embankment, depending on Wujiang River flood level changes, cutter Beach 140 ~ 380 m. Recommended floats back to cable systems.8. This analysis shows that uplink route dry season: Wujiang 3 m below the warning dry season, ships uplink center partial routes at the right bank side of the nullah. 3 m above the water level, on the left bank of the nullah route vertical at the side of the cofferdam. Route planning downlink route downlink channels Center in the side of the left bank of biased, and the Sheung Shui route location nearer. |
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