The definition and calculation of fractional dimension is introduced briefly . the pressure fluctuation signals are processed by reconstructing the phase space for sediment - laden and aerated flow . the correlation dimensions are calculated for sediment - laden flow , clear water and aerated flow 简要地介绍了分维的定义和计算，运用相空间重构法对含沙掺气水流脉动压强信号进行处理，计算了浑水、清水、掺气三种不同水流状况的关联维数。
The sediment problems of this project in design is that the deposition of sediment causing the permanent loss of reservoir capacity . the measure of enlarging the discharging of water and sediment can reduce deposition , but the concentration of sediment is bigger and much sediment passes through the pump - turbines 减少水库库容淤积损失，加大排沙量，会造成在发生洪水时期水库内含沙量加大，抽水时会有更多的泥沙过机，机组因泥沙而磨损。
The results show that the equilibrium adsorption from the sediment content to the phosphorous pollutant increases along with the increase of the initial concentration of the water phase phosphorus ; however , no significant effect from the sediment content is there on the parameters of the isothermal adsorption equation 结果显示，泥沙对含磷污染物的平衡吸附量大致随水相磷初始浓度的增大而增大；而含沙量对磷吸附等温式的参数没有显著影响。
In this paper , some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data . the cross section of compound channel can be divided into four regions : the undisturbed region in main channel , the interactive region between channel and plain , the undisturbed region in flood plain and the boundary region . in the undisturbed regions , the distribution of longitudinal velocity along the depth has the feature of lograithmic . whereas , in the interactive region , the longitudinal velocity does not obey the logarithmic distribution law , but it can expressed as a revised logarithmic function by using a wake function . on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained . in the boundary region , the longitudinal velocity obeys the law of parabolic distribution . furthermore , according to the simplified diffusion equation , the transverse distribution of sediment concentration in the interactive region is deduced . the analysis is in good agreement with the measured data 本文根据漫滩水流的运动特点，将漫滩水流的复式断面分为主槽平衡区、滩槽交互区、滩地平衡区及边壁区等4个区，并给出了各区宽度的经验公式.根据滩槽交互区垂线流速分布的变化特点，提出了附加尾流函数的对数流速分布公式.在简化水流运动方程和泥沙扩散方程的基础上，对滩槽交互区内垂线平均流速及含沙量沿横向分布进行了理论分析，提出了反映滩槽水流动量交换强度的横向涡量粘性系数及横向扩散系数的表达式，得到了漫滩水流垂线平均流速及含沙量沿横向分布的解析解，并与实测资料吻合较好
So as the enter point of the stream , the income of the reservoir , the time of the flood peak lasted , the quantity of sandiness income and the strobe of the darn . we must do some work to forecast and watch the different density stream . by experiments , we made out that it is impo rtant for us to reduce the water lever in work of the river belongs lots of sandiness 从异重流试验看，在正常运用下，水库产生泥沙异重流的机率较大，能否运动到坝前排出库外，还要看异重流潜入点位置、入库流量、洪峰历时、入库含沙量、水库闸门运用等因素，需要做好异重流预报监测工作。
Towards the research on two flood water of yuhe river in datong city during 2004 , by measuring and comparing their discharge , sediment concentration 、 nutrient include organic , phosphorus , , potassium , azote , the result shows that the nutrient content of the sediment is greatly larger than that of supernatant fluid 摘要以2004年大同市御河干渠两场洪水为研究对象，对其流量、含沙量、养分（包括有机质，氮，磷，钾）做了测定和比较，研究结果表明：洪水中下层泥沙中的养分含量远大于上清液中的养分含量；洪水中整体养分含量随着含沙量的增大而增大，并且养分含量和含沙量呈近似线性关系。
The influence factors of the river course evolution include climate , hydrology , geology , geological tectonic , colioli force , and human activity , and their functions are different , and they are more and more important in the last 50 years , especially water current containing sand , and human activity 影响河道演变的主要因素有气候、水文、地质、地貌、地质构造、科氏力及人为因素等。但这些因素对河道所起的作用是不一样的。近五十年来，地质构造、水文特别是含沙水流及人为因素对河道改造起了越来越重要的作用。
