| 1. | Long - term prediction of annual maximum peak discharge at yangtze three gorges based on artificial neural network
基于人工神经网络的长江三峡年最大洪峰流量长期预报 |
| 2. | The probability density function of net rainfall relative errors , flood peak discharge relative errors and the time error of the forecasted flood peak are calculated by the model developed
通过建立洪水预报误差分布的最大摘模型，计算出9座典型水库洪水预报的净雨相对误差、洪峰流量相对误差和峰现时间预报误差的概率密度函数，并将其概率密度函数曲线与正态分布曲线进行比较。 |
| 3. | In this model , the peak of flood , flood total outflow and flood process are to be considered . a calculation program with monte - carlo method and a simplified method for calculating diversion risk are suggested
在该模型中，可考虑水文中的洪峰流量、洪水总量和洪水过程的不确定性及水力的不确定性，提出了用monte - carlo方法计算施工导流风险的步骤和用近似法计算施工导流风险的方法。 |
| 4. | It is verified by the observed data of xianing port area in changsha city that the model is of high accuracy , with the greatest relative error of the peak flow of only 7 . 85 % , thus can be used in runoff simulation of harbor rainfall drainage system
经长沙市霞凝港区的实测资料检验，证明该模型在港区小流域的雨洪分析中有较高的精度，洪峰流量最大相对误差仅为7 . 85 % ，可用于港区雨水排水的径流模拟。 |
| 5. | The velocity of flood propagation was great and flood deformation was slightly when flood peak increase to bank full discharge . as the discharge increased to 2 - 2 . 5 times of bank full discharge the velocity reduced to the lowest value and the greatest flood deformation occurred
当洪峰流量接近平滩流量时洪水传播速度最快，洪峰变形最小，当洪峰流量约是平滩流量的2 2 . 5倍时，洪水传播速度最慢，洪水变形最大。 |
| 6. | Results showed , taking jia - lu - he catchment as example , that the integrated control of soil and water loess could reduce the flood - peak flow and flood water amount , that the flow process has been prolonged and that the peak flow was postponed
提出了水土流失综合治理对大中流域暴雨洪水影响的研究方法。以佳芦河为例，分析表明：水土流失综合治理使暴雨洪水的洪峰流量、洪水总量降低，洪水过程持续时间延长，洪峰滞后。 |
| 7. | The formula of calculating flood peak at downstream stations according to upstream flood peak at hydrometer station was proposed in this research . in the formula river boundary and flood type factors etc . were main factors and the formula can reflect the impacting factors of flood deformation
报告给出了由上游水文站洪峰流量计算下游站洪峰流量的计算公式，公式包含有河道条件和洪峰峰型因子，较全面地反映了影响洪水变形的因素。 |
| 8. | Ii ) runoff erosivity reflects relationship of water erosion forces and sediment yield more directly than rainfall erosivity . it intergrated ability of runoff volume and flood peak on detaching soil and transporting sediment and is more reasonable than single runoff depth or flood peak volume
( 2 )以径流侵蚀力代替降雨侵蚀力来反映水蚀营力与产沙量的关系更加直接，而且综合了径流量与洪峰在剥蚀土壤和搬运泥沙能力，比单独运用径流深或洪峰流量更加合理。 |
| 9. | The objective of the optimal model is to keep the flood process mode similar and subject to restrictions of the actual peak flow discharge and flood volume in different period of time , the ga and prsaa that have global optimal capabilities are used to solve the model in this paper
在满足洪峰流量约束和分时段洪量约束条件下，本文建立了以洪水过程模式尽量相似为目标的洪水过程放大优化模型，并采用具有全局搜索能力的遗传算法和并行组合模拟退火算法求解该模型。 |
| 10. | The simulative calculation results show that all the three measures mentioned herein have larger effects on the infiltration , runoff , flood peak flow and overland flow and can greatly alleviate the pressure of the draining pipeline , clip the flood peak and increase the infiltration as well , if they are taken as the additional important measures of urban drainage for flood control
模拟计算的结果显示，以上3种方式对入渗、径流、洪峰流量、坡面流等均有较大影响，作为城市防洪排水的重要辅助措施，可以极大地缓解排水管道压力，同时削减洪峰、增加入渗。 |
