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一九八五年十月十五日至十九日,我们邀请国家海洋局第二海洋研究所对长江嘶马段护岸抛石工程的效果进行检测,所用的仪器为美国产旁视声纳仪,检测内容主要是丁坝群范围内的抛石分布。总计有效测线长度约12公里,其中17条测线用100KHz拖鱼,双侧扫描宽度约300米;8条测线用500 KHz拖鱼,双侧扫描宽度约100米,探测使用治江一号船,工作船速约3～4节。通过探测,对嘶马丁坝群护岸段水下抛石范围内块石分布的
From October 15 to January 19, 1985, we invited the Second Institute of Oceanography of the State Oceanic Administration to test the effect of the riprap project on the coast of Hohhot, the Yangtze River. The instruments used were American-made parallax sonar The detection content is mainly the distribution of riprap within the range of Dingba Group. The total valid line length is about 12 km, of which 17 lines with 100KHz trawling, bilateral scanning width of about 300 meters; 8 lines with 500 KHz trawling, both sides of the scan width of about 100 meters, the probe using the Jiang one Boat, working boat speed of about 3 to 4. Through detection, the distribution of rocks and stones within the underwater riprap range of the revetment section of the Madgeba dam group is analyzed