摘要
根据春季河道武开河初始发生时的边界约束条件,提出以开河期水位增值作为河道开河方式的判别准则。对于某一特定河段,存在一个高于稳封期最高水位的水位增长值,该值可作为区别武开河与文开河的临界值,其大小近似与稳封期冰盖体最大厚度成正比。应用黄河昭君坟水文站原型观测资料对所提出的判别准则中的参数进行率定,使该准则可以用于河道武开河或文开河的判别。
According to the boundary constraint conditions for the onset of violent break-up of rivers in spring,a discrimination criterion for break-up modes of rivers was proposed based on the water-stage increment during the break-up period.For a special river reach,there would be a water-stage increment larger than the highest water stage during the freeze-up period.It was approximately directly proportional to the largest thickness of the ice cover during the freeze-up period and it could be regarded as the critical value for discriminating violent break-up and tranquil break-up of rivers.The parameters for the proposed discrimination criterion were calibrated by use of the observed data at Zhaojunfen hydrological station on Yellow River so as to make it applicable in the discrimination of the violent break-up and the tranquil break-up of rivers.
出处
《水利水电科技进展》
CSCD
北大核心
2010年第6期1-3,共3页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金(50579030)
关键词
开河
武开河
文开河
冰盖断裂
判别准则
break-up
violent break-up
tranquil break-up
ice-cover fracture
discrimination criterion
