1978年7月1日中午,长江口外海域发生了一起多年未有的水下爆炸事件:一万三千吨的大型挖泥船“山峰”号突然被炸了!被炸经过“山峰”号是1975年从日本进口的耙吸式挖泥船,设备齐全,挖泥效率也比较高。挖泥时,能从两舷分别伸出一个巨大的吸耙。耙头上是四排16个耙齿构成的大爪子,耙齿宽6厘米,齿距40厘米。每只耙头重12吨,借助这个重量,吸耙可插入泥沙半米左右。耙管中的高压水, At noon July 1, 1978, an unexplored underwater explosion occurred in the waters off the mouth of the Yangtze River: a 13,000-tonne large-scale dredger “Mountain” suddenly exploded! "Is a trailing suction dredger imported from Japan in 1975, fully equipped and dredging efficiency is relatively high. Dredging, from the two sides were a huge stretch of the rake. Rake head is a row of four rows of 16 claws composed of large claws, rake tooth width of 6 cm, pitch 40 cm. Each rake head weighing 12 tons, with this weight, suction rake can be inserted into the sediment about half a meter. Rake pipe in the high-pressure water,