热敏式双频测深仪在航道沙波研究中的应用  

The Application of Thermal Depth Sounder Recorder in the Study of Sandwaves in Channel

作　　者：张正惕[1] 杨世伦[1] 谢文辉[1] 

机构地区：[1]华东师范大学河口海岸研究所河口海岸国家重点实验室,上海200062

出　　处：《华东师范大学学报（自然科学版）》1999年第4期68-73,共6页Journal of East China Normal University(Natural Science)

摘　　要：该文简单介绍了Innerspace 449 热敏式双频测深仪的功能和基本工作原理,并以实例说明Innerspace 449 热敏式双频测深仪在航道沙波研究中是一种直接快速有效的方法。利用Innerspace 449 热敏式双频测深仪和GPS( 全球定位系统) ,我们于1997 年3 月、7 月和8 月在长江口南港和南北槽主航道进行了走航观测,根据Innerspace 449 热敏式双频测深仪的记录结果,确认南港( 吴淞口以下) 上段航道在洪季正常风况下存在尺度较大的沙波群。而且,通过仪器记录分析,揭示了单个沙波和沙波群的一系列特征值,如沙波的分布、沙波几何特征、沙波指数、沙波对称性以及沙波运动与水流的关系等,为底沙运动、沙波研究和航道的开挖、维护提供了理论依据。The fundamental function and work principle of the Innerspace 449 Thermal Depth Sounder Recorder were given firstly in this article. then a real example was presented to demonstrate that the application of Innercpace 449 Thermal Depth Sounder Recorder in the study of sandwaves in channel was a valid and direct method. We carried out a field survey with the Innerspace 449 Thermal Depth Sounder Recorder and GPS (Globe Position System) in South channel, South Passage and North Passage of Changjiang estuary in March, July and August, 1997. According to the mark of the Innerspace 449 Thermal Depth Sounder Recorder, it was sure that there were large scale sandwaves in fore section of south channel of Changjiang in normal flood season. and based on the analysis of these datas, a series of characteristics of both single wave and sandwaves were revealed, such as their distributary, their geometric feature, the rate of L/H and their symmetry the correlation between sandwaves and flow, etc. These findings can offer a good reference for not only the study of sandwave movement and the bed load transport but also the openness and maintenance of channel.

关 键 词：热敏式 双频测深仪 回声测探 航道 沙波群 航道 

分 类 号：TV149[水利工程—水力学及河流动力学]