基于水温因子的改进输沙率计算模型及其应用  

Water sediment-based transport rate model and its application

作　　者：麻蓉[1] 白涛[1] 黄强[1] 哈燕萍 

机构地区：[1]西安理工大学西北旱区生态水利工程国家重点实验室培育基地,陕西西安710048

出　　处：《西安理工大学学报》2017年第1期66-70,共5页Journal of Xi'an University of Technology

基　　金：水利公益性行业科研专项经费资助项目(201501058);国家自然科学基金资助项目(51409210);陕西省水利科技计划资助项目(2016slkj-8;2017slkj-16);西安理工大学水利水电学院科研资助项目(2016ZZKT-15)

摘　　要：本文以黄河宁蒙河段为研究对象,以2006—2010年日资料为准,引入水温因子,对传统基于场次洪水的输沙率计算模型进行改进,并采用多元回归法率定模型参数。实例计算结果表明:传统输沙率模型适用于常温下场次洪水的输沙率计算,在低水温洪水条件下的计算误差大,而考虑水温的河道输沙率模型误差显著减小,与实测资料具有高度一致性;低水温条件有利于河道泥沙的输移。Taking Ningxia-Inner Mongolia as the research object,using the data from 2006to2010,we improved the traditional flood sediment transport model by introducing water temperature,and calibrated the model parameters by multiple regression.The example calculation results show that the traditional sediment transport rate model is suitable for the calculation at normal temperature,with the larger error and poor accuracy at low temperature;however the error of temperature model is significantly reduced and highly correlated with measured data.Also shown is that low temperature is conducive to the river sediment transport.

关 键 词：水沙规律 水温 输沙率 宁蒙河道 

分 类 号：TV142[水利工程—水力学及河流动力学]