摘要
施工水文预报随着工程的不断进展,将呈现出不同的技术特点。针对2008年12月向家坝水电站实施二期围堰截流后,河道水流特性及坝区水文情势较以前发生了根本变化的实际情况,阐述了两个预报难点:二期围堰截流后壅水型水库的形成及坝址下游横江的顶托影响。说明了现阶段坝区水位预报的流程及呈现出的规律。研究结果可为类似工程施工期的水文预报提供借鉴。
Construction hydrological forecasting shows different features with the progress of project.In view of the change of channel flow characteristics and hydrological regime at dam site after the stage II cofferdam closure of Xiangjiaba Hydropower Station in December 2008,we illustrate two difficulties in forecasting,namely the formation of backwater reservoir and backwater effect of Hengjiang River downstream the dam site,and demonstrate the laws and procedures of the water level forecasting at this stage.The results can be referred by similar construction hydrological forecasting.
出处
《人民长江》
北大核心
2011年第6期30-31,60,共3页
Yangtze River
关键词
水文预报
施工期
壅水影响
顶托影响
向家坝水电站
hydrological forecasting
construction period
backwater effect
jacking effect
Xiangjiaba Hydropower Station
