Research On Tirbutary Channel Classification Of Three Gorges Reservoir Area

After the completion of the three gorges project, the size is the superior tributarynavigable conditions,for Reservoir area of shipping and economic developmentprovides new opportunities. Due to the tributary of channel has small flow velocity、theuniform flow process、navigation continuity、single ship traffic advantages，with inlandnavigation conditions of natural has great difference. Actual investigation shows that.Part of the tributaries of the channel dimensions is far from the 《inland navigationstandard》 provisionsⅠ、Ⅱlevel waterway This presents a problem，Whether《inlandnavigation standard》 still apply to determine the tributary of channel level?Based on the field investigation, water mathematical model and mathematicalmodel of the voyage, and other comprehensive method In three gorges reservoir areaand the grading standards branch navigation channel in the applicable tributary level，The ongoing work of the main conclusions and access are:（1） Application of three gorges reservoir area of typical tributaries flowconditions、ship type material，to establish the two-dimensional flow model、The shipmaneuvering mathematical model, was verified and calibration, Can be used as the basisof study method.（2） Application two-dimensional flow mathematic model to the flow conditiontypical tributaries is simulated。The results showed that the flood season tributaries forstatic water velocity general or less than0.1m/s; The flood season for less than0.5m/svelocity；perennial fluctuating velocity about0.5¹.0m/s；the return water changesabout1.0².0m/s; Section coefficient generally more than50；Navigation flowcondition is superior.（3）Based on the reservoir area representative tributaries of ship type and flowconditions，Consider the speed V0、longitudinal velocityV、lateral velocityVy、sailingdirection、bending radiusR、the captainL、and other comprehensive influence factors,Navigation application model is nearly700group the numerical simulation of TheTimes. Found sailing direction, longitudinal velocity to determine the key parameter ofnavigation wide——Sailing drift Angle not sensitive，build a line segment、bendingperiod of drift Angle calculation formula for the voyage β=64（V_y/V₀） and β=120（（V/V₀））/（R/L）)。Tributary of the flow condition is superior，a line segment, bending period of driftAngle for2.6³.8°、4⁸°about sailing.（4）Given the applicable to the tributary of Ⅰ^Ⅶlevel of aeromagnetic deepnavigation channel, wide, such as turning radius channel dimensions standards. And the curren《tinland navigation standard》compare，Ⅰ^Ⅳlevel navigation wide narrowingsomewhat, turn radius reduced significantly.（5）Analyzes the three gorges reservoir area of the main tributaries flowconditions、channel geometry dimension and regulation sex，combined with the localresearch results，Its main tributaries channel technology level。Such as the daning river、meixi rever as the level Ⅰ channel，baolong rever、long rever for Ⅳchannel.