【摘要】 针对我国西北高纬度地区宽浅式渠道无法通过结冰盖输水的问题,以新疆北疆长距离输水渠道为依托,开展宽浅式渠道水内冰演变输移规律研究,通过构建一维冰水二相流输水模型,分析冰期渠道水内冰时空分布规律,利用部分渠段单日实测资料验证模型的可靠性,最终对全渠段冬季冰期进行模拟,揭示渠道水内冰生成的初始时间及位置,并计算得出水内冰浓度沿时空变化规律,研究成果对保证渠道冬季安全输水具有一定的借鉴意义。更多还原

【Abstract】 In view of the problem that the wide-shallow channels in the high latitudes of northwest China can’t carry water through the ice cover,based on the long-distance water transport channels in northern Xinjiang,the evolution and transport law of ice in the wide-shallow channels is studied. Through the construction of an one-dimensional ice-water two-phase flow water transport model,the temporal and spatial distribution law of ice in the channel water during the ice age is analyzed,and the reliability of the model is verified by using the daily measured data of some channel sections. Finally,the winter ice age of the whole channel section is simulated,the initial time and location of ice formation in the channel water are revealed,and the variation law of ice concentration along time and space is calculated. The research results have a certain reference significance to ensure the safe water transport of the channel in winter.更多还原