基于梯级开发的贺江下游航道尺度提升潜力研究  

Study on upgrading potential of navigation conditions of the downstream cascaded channel in the Hejiang River

作　　者：秦杰 吴腾[1] QIN Jie;WU Teng(College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098,China;Key Laboratory of Port, Waterway and Sedimentation Engineering of Ministry of Transport, Nanjing 210024,China)

机构地区：[1]河海大学港口海岸与近海工程学院,南京210098 [2]港口航道泥沙工程交通行业重点实验室,南京210024

出　　处：《水道港口》2021年第4期498-503,516,共7页Journal of Waterway and Harbor

基　　金：国家自然科学基金面上项目(52079043);浙江省交通运输厅科技计划项目(2020015);港口航道泥沙工程交通行业重点实验室开放基金(Yn918004)。

摘　　要：贺江下游河道已兴建多座水利枢纽,各枢纽均建有通航设施,但通航等级较低,制约了航运效益的发挥。文章建立一维数学模型,研究了贺江下游的最低水位、水深条件和通航宽度等问题。研究结果表明:贺江下游航道沿程最低水位受梯级枢纽的运用影响明显,在目前运用模式下和最低水位条件下,贺江下游六级航道能全线通航。贺江白垢至江口河段通航尺度条件最好,可达四级航道通航标准,其余河段通航条件较差,只能满足六级航道标准。贺江下游按照五级航道标准统计,碍航浅滩长度为2.5 km,按照四级航道标准,碍航浅滩长度为9.0 km,按照三级航道标准,碍航浅滩长度为20.6 km。贺江下游航道可通过航道疏浚和梯级枢纽联合调度的方法提升航道尺度等级。A number of reservoirs were built in the lower reach of the Hejiang River.Although each reservoir built navigation facilities,the navigation level of the river is very low,and the river is not fully navigable.In this paper,a one-dimensional mathematical model was established to study the lowest water level,water depth,and the navigation width of the lower reach of the Hejiang River.The research results show that the lowest water level along the downstream channel of the Hejiang River is seriously affected by the operation of the cascade reservoirs.Under the current operation mode,the sixth-class navigation condition can be realized in the river.The navigation condition between Baigou and Jiangkou are the best,and this section reaches the fourth-class navigation condition.The navigation conditions of other sections are poor,and they can only meet the sixth-class navigation standard.According to the requirement of the fifth-class navigation standard,the navigation-obstructing section is 2.5 km in length,and it is 9.0 km and 20.6 km for the fourth-class and third-class requirements,respectively.The downstream navigation conditions of the Hejiang River can be upgraded through channel dredging and joint scheduling of the cascaded dams.

关 键 词：航道整治 数学模型 贺江 梯级枢纽 

分 类 号：U617[交通运输工程—船舶及航道工程]