欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
利用黄河下游21a实测水文数据，逐年计算了其中6个河段的单位水流功率，分析了各河段的演化发展特征。研究结果表明：黄河下游弯曲河段的单位水流功率小于游荡河段的单位水流功率，过渡型河段的单位水流功率介于弯曲河段和游荡河段的单位水流功率之间；花-夹和夹-高游荡型河段21a的单位水流功率变化幅度较大，说明这两个河段的游荡特性至今没有得到改善，远离相对平衡状态；高-孙和孙-艾过渡型河段的单位水流功率逐渐下降，且自90年代中期以来变化幅度不大，其游荡特性已逐渐消失，越来越趋近于相对平衡状态；艾-泺和泺-利弯曲型河段21a的单位水流功率围绕着其平均值变化幅度越来越小，趋于相对平衡状态。
英文摘要：
Based on the data of the lower Yellow River during the range of 21 years, the unit stream pow-er was analyzed for 6 reaches and the law of the river evolution was investigated. The results show that the unit stream power of the meandering reach is lower than the one in the wandering reach, and the unit stream power of the transitional reach is higher than the one in the meandering reach but lower than the one in the wandering reach. Furthermore, the unit stream power of both Huayuankou-Jiahetan and Jiahet- an-Gaocun reaches varies in a very large range, which means that the wandering characteristic of the reach-es has not been improved so far and the reaches are far away from the relative state of equilibrium. While, the unit stream power of Gaocun-Sunkou and Sunkou-Aishan reaches has decreased and varied in a relative small range since the mid-1990s, which means that the wandering characteristic has gradually disappeared and the reaches are more and more closer to the relative state of equilibrium. Besides, the unit stream power of Aishan-Luokou and Luokou-Lijin meandering reaches within the range of 21 years var-ies around its average value and the reaches are close to the relative state of equilibrium.
同期刊论文项目
同项目期刊论文
Two-phase flow numerical simulation of a bend-type ice sluice in the diversion water channel of powe
Experimental study on the bed topography evolution in alluvial meandering rivers with various sinuou
Analysis of agricultural pollution by flood flow impact on water quality in a reservoir using a thre
Three-dimensional simulation of the water flow field and the suspended-solids concentration in a cir
Numerical investigation on vortex-induced vibration of an elastically mounted circular cylinder at l
An Integrated Groundwater Management Mode Based on Control Indexes of Groundwater Quantity and Level
Short-term optimal operation of Three-gorge and Gezhouba cascade hydropower stations in non-flood se
Risk identification on hydropower project using the IAHP and extension of TOPSIS methods under inter
The effects of strong motion duration on the dynamic response and accumulated damage of concrete gra
Observation of microscopic damage accumulation in brittle solids subjected to dynamic compressive lo
Laboratory observation of acoustic fluidization in granular fault gouge and implications for dynamic
Laboratory measurements of the rate dependence of the fracture toughness anisotropy of Barre granite
Optimal sensor placement for large structures using the nearest neighbour index and a hybrid swarm i
Joint impact of rainfall and tidal level on flood risk in a coastal city with a complex river networ
Eulerian-Eulerian solid-liquid two-phase flow of sandstone wastewater in a hydropower station rectan
Research on virtual-reality interactive simulation for concrete dam construction process based on ve
Seismic cracking analysis of concrete gravity dams with initial cracks using the extended finite ele
Constructioin Schedule Real-time Control Coupling Consruction Quality in Large Scale Underground Pow
Comprehensive Evaluation of the Coupling Construction Progress and Quality of High Core Rockfill Dam
Joint probability distribution of winds and waves from wave simulation of 20 years (1989-2008) in Bo
Construction Schedules Simulation and Prediction of Water Conveyance Tunnel Based on Karst Geologica
Research on Management Information System for Construction Consultant in Hydropower Project Based on
A Study on the Controllability of Deepwater Manifold during Launch through Pendulous Installation Me
Research on Construction Schedule Real-Time Control of High Core Rock-Fill Dam Based on Digital Moni
Tracking methods for free surface and simulation of a liquid droplet impacting on a solid surface ba
Finite element analysis on thermal upheaval buckling of submarine burial pipelines with initial impe
期刊信息
位置：