CAJ | 학술논문

开河前，冰盖糙率增加造成渠道水位上涨，有武开河的可能，易形成冰坝；开河时的水力半径和综合糙率突变造成渠道水位陡降，存在渠道衬砌破坏的危险。本文通过分析渠系融冰期的水力响应特性，从渠系运行安全（水位波动幅度和波动速率较小）角度提出渠系融冰期安全输水模式--适时适量的调节各分水口取水量，基于冰情预报建立了渠系融冰期自动化控制管理模型。该模型在渠系安全高效运行的基础上可加快渠系由冰期输水转为正常输水的过程，增大了渠系的输水效益。融冰期的冰盖糙率变化过程是影响渠系水位波动和流量调节量的重要因素，需要通过不同气象条件和流量下的详细原型观测进行分析。
개하전，빙개조솔증가조성거도수위상창，유무개하적가능，역형성빙패；개하시적수력반경화종합조솔돌변조성거도수위두강，존재거도츤체파배적위험。본문통과분석거계융빙기적수력향응특성，종거계운행안전（수위파동폭도화파동속솔교소）각도제출거계융빙기안전수수모식--괄시괄량적조절각분수구취수량，기우빙정예보건립료거계융빙기자동화공제관리모형。해모형재거계안전고효운행적기출상가가쾌거계유빙기수수전위정상수수적과정，증대료거계적수수효익。융빙기적빙개조솔변화과정시영향거계수위파동화류량조절량적중요인소，수요통과불동기상조건화류량하적상세원형관측진행분석。
Water level fluctuaes in a big range during ice melting period caused by the changes of rough-ness and thickness (hydraulic radius) of ice cover, with more possibility of ice jam formation. To protect canal system from ice disaster and reduce the ice melting period, the flow target of canal system should be adjusted, and a mathematical model is obtained based on ice condition prediction to direct the automa-tion operation of canal system in this paper. The model is used for canal system security, and canal sys-tem can be free flow earlier and more water can be transport to downstream users. The changing process of ice cover roughness is very important to this model to improve the hydraulic response of canal system;which should be obtained by long term ice observations.