CAJ | 학술논문

利用水槽试验模拟浅海沙床进行试验，观察波浪和沙床互相作用及其对各自形态变化的影响。通过数据采集及定义两个参数K1(波高变化率)和K2(沙坝高宽比)的数据处理方法，研究试验现象发生的原因并归纳出规律。试验中海床模型由中值粒径为0.47 mm 的原型沙铺设而成，坡度为1∶20。研究结果表明：波浪在斜坡上的传播受到斜坡高程变化的影响。波浪传播距岸越近，斜坡高程越高，波高越大，同时波峰变尖，波谷坦化。在波浪作用下，底床形成沙纹和沙坝，沙纹和沙坝床面形态的不规则性将对波浪上爬产生一定的阻力，导致平均波高在破碎前减小，最大平均波高发生位置移动，相对波高变化率K1和沙坝高宽比K2之间成正比关系。
이용수조시험모의천해사상진행시험，관찰파랑화사상호상작용급기대각자형태변화적영향。통과수거채집급정의량개삼수K1(파고변화솔)화K2(사패고관비)적수거처리방법，연구시험현상발생적원인병귀납출규률。시험중해상모형유중치립경위0.47 mm 적원형사포설이성，파도위1∶20。연구결과표명：파랑재사파상적전파수도사파고정변화적영향。파랑전파거안월근，사파고정월고，파고월대，동시파봉변첨，파곡탄화。재파랑작용하，저상형성사문화사패，사문화사패상면형태적불규칙성장대파랑상파산생일정적조력，도치평균파고재파쇄전감소，최대평균파고발생위치이동，상대파고변화솔K1화사패고관비K2지간성정비관계。
Based on the wave flume experiments,the interaction of waves caused by the impact of their morphological changes will be observed.Data collection is used and two parametersK1 (wave height variation rate)andK2 (sandbar aspect ratio)are defined u-sing data processing methods to study the reason of experimental phenomena.The sea-bed model is used as a prototype sand whose median diameter is 0.47 mm and the slope is 1∶20.The results show that the wave propagation on slopes affected by the slope ele-vation changes.The closer to shore the wave propagation is,the higher the slopes eleva-tion,and the higher the wave height,while the wave peak becomes sharp and wave trough becomes plain.The sand waves and the sandbar are formed under wave action,the irregularities of the sand waves and the sandbar will be resistant to the wave climbing. The average wave height is decreased before the wave is broken,the maximum average wave height occurs position.A proportional relationship between the relatively wave height variation rate K1 and the sandbar aspect ratio K2 is obtained.