CAJ | 학술논문

通过实体模型试验研究分析了取水枢纽修建前后江道的河床演变趋势，优化比较了取水枢纽及泄洪闸的不同布置方式，运用理论分析和试验2个方法研究了泄洪闸闸下极限冲刷能力及其消能防护措施，同时验证了取水枢纽修建后引水渠道的引水能力并提出了相应的防沙措施。试验结果表明，取水枢纽泄洪闸的布置是合理的，对江道水流特性及床面冲淤变化的影响较小；设计引水闸的引水量可以达到149 m3／s ，能满足相应的设计要求。建议适当增加泄洪闸消力池和海漫的设计尺寸以满足实际需要；提出了采用泄洪闸拉沙可以降低鱼嘴附近的床面高程，从而有利于减少粗颗粒泥沙进入引水渠道的防沙措施。
통과실체모형시험연구분석료취수추뉴수건전후강도적하상연변추세，우화비교료취수추뉴급설홍갑적불동포치방식，운용이론분석화시험2개방법연구료설홍갑갑하겁한충쇄능력급기소능방호조시，동시험증료취수추뉴수건후인수거도적인수능력병제출료상응적방사조시。시험결과표명，취수추뉴설홍갑적포치시합리적，대강도수류특성급상면충어변화적영향교소；설계인수갑적인수량가이체도149 m3／s ，능만족상응적설계요구。건의괄당증가설홍갑소력지화해만적설계척촌이만족실제수요；제출료채용설홍갑랍사가이강저어취부근적상면고정，종이유리우감소조과립니사진입인수거도적방사조시。
This paper mainly analyzes the evolution trend of river bed before and after the construction of water intake project , and optimizes the layout of water intake project and sluice by comparing the difference through physical model experiment study . Meanwhile , it examines the limit scour ability and protective measures for energy dissipation of sluice by using theoretical analysis and experimental research , and verifies the diversion capacity of the channel after the construction of water intake project and put forward the corresponding sediment control measures . The experiment results show that the layout of water intake project and sluice is reasonable , and it is less affected the flow characteristics of the river channel and changes in scouring and silting of the bed surface;it is met the requirements of the design that the amount of water for design sluice can reach 149 m3/s;it is recommended to appropriately increase the design size of stiller and apron for the actual needs ;the measure of sediment control is proposed that scouring sediment by using sluice can reduce the bed surface elevation near Fish Mouth in order to reduce the coarse sediment into the diversion channel . This research provides the scientific basis and technical support for the optimization design of North Canal expansion project .