本文選題：河道堤防 + 多波束條帶測深技術��； 參考：《水利水電技術》2017年04期

【摘要】：針對河道堤防水面線以下的表觀病害具有隱蔽性、難于探測和發(fā)現(xiàn)的特點,將多波束條帶測深技術和雙頻識別聲吶技術相組合,實現(xiàn)了準確布置計劃測線確保水下外觀病害全覆蓋掃測。通過在雙頻識別聲吶換能器上安置GPS接收機,基于位置信息將病害中心位置在多波束點云圖上準確地標示出來,從而彌補了兩種技術各自的局限性,并在工程實踐中開展應用。實踐表明,選擇波束角小的多波束條帶測深系統(tǒng),可獲取高質(zhì)量、高分辨率的數(shù)據(jù),便于發(fā)現(xiàn)細微的外觀破碎、剝落等病害。在多波束掃測工作中船速不宜太快,應控制在5節(jié)以內(nèi),同時聲吶探測時應平行水流方向布置測線。工程實例表明,將兩種技術組合在一起,能準確發(fā)現(xiàn)水下破損、塌陷等表觀病害。研究成果為類似工程的病害探測和除險加固提供技術支撐。
[Abstract]:In view of the fact that the apparent diseases below the water surface line of the river embankment are hidden and difficult to detect and discover, the multi-beam strip sounding technique and the dual-frequency sonar technology are combined. The accurate layout of the measuring lines is realized to ensure the full coverage of underwater appearance diseases. By placing GPS receiver on the dual-frequency sonar transducer, the disease center position is accurately marked out on the multi-beam cloud map based on the position information, which makes up for the limitation of the two technologies and is applied in engineering practice. The practice shows that selecting the multi-beam sounder system with small beam angle can obtain high quality and high resolution data, and it is convenient to find fine appearance breakage and spalling diseases. The ship speed should not be too fast and should be controlled within 5 knots in the multi-beam scanning and sonar detection should be parallel to the direction of the water flow. The engineering example shows that the combination of the two techniques can accurately detect the apparent diseases such as underwater damage and collapse. The research results provide technical support for disease detection and reinforcement of similar projects.
【作者單位】： 江蘇省水利科學研究院;
【分類號】：TV871.4

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