三峡库区支流航道技术等级定级及其应用

三峡蓄水后支流的航道条件得到根本改善,但由于常规的内河通航标准没有考虑水库蓄水对支流航道的影响,因此不能采用常规体系来定级三峡库区支流航道的技术等级。以支流梅溪河为例,从水流条件、航道尺度、通航保证率等方面对三峡成库后支流的航道技术等级定级进行了初步探讨;将该标准体系应用于梅溪河,得到了三峡蓄水后梅溪河的航道标准。成果为三峡及类似库区支流航道技术等级的界定及相关研究提供了参考和借鉴。

Preliminary Study and Its Application of Navigation Grading Standard Planning of the Tributary Channel in TGP Reservoir Area

The navigation condition of tributaries at TGP reservoir area has improved essentially but it still lacks navigation grading standard,for the normal grading standard of inland river takes no consideration of the effect of reservoir on the tributary channel navigation.So the normal grading standard can't be applied to determine the technical grade of tributary channel.Taking Meixi River as the typical tributary,the preliminary exploration of grading the tributaries navigation technically after the accomplishment of TGP reservoir is carried out;the exploration is discussed from various aspects,such as flow condition,channel dimension and the navigation guarantee rate.The proposed standard is applied to Meixi River,and its channel navigation standard after the accomplishment of TGP is obtained,which can be taken as the reference for the navigation grading study of TGP reservoir and navigation tributaries of similar reservoirs.