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1 IntroductionWiththesocialandeconomicdevelopment,dykeplaysmoreandmoreimportantroleinthefloodcontrolsystemforthemiddleandlowerYangtze.Thedykeexperiencesveryhighfloodlevelmoreandmorefrequently.TakingthelowerJingjiangstretchinHubeiProvinceasanexample,i…  相似文献   
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1. INTRODUCTION Study on negatively buoyant jets in cross flow is mainly focused on dense jets in which the nega- tive buoyancy is caused by the difference of con- centration. Example is brine discharged upwards into environment . The effluent is denser than the receiving water andthejets are pointed upwards at some angle to achieve a trajectory resulting in suf- ficient dilution. The negative buoyancy causes the jets to reach a terminal rise height and then fall back to the lower boundar…  相似文献   
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