耙吸式挖泥自动土方计量仪在航道疏浚中的应用

Application of automatic measurement instrument of trailing suction hopper dredgers for channel dredging

为解决自航耙吸船在航道疏浚特别是冲淤变化大、施工中无法精确测量水下土方的难题，依托大型自航耙吸式挖泥船“长鲸6”在长江南京以下12．5m深水航道二期工程施工中进行研究．采用自动土方计量仪进行耙吸船疏浚精确计量，探讨自动土方计量仪原理并总结应用。

To solve the problems of the great change of scouring and silting and the imprecise measurement of earthwork, we measure the earthwork accurately by the automatic measurement instrument, which is equipped in the trailing suction hopper dredger： Changjing No. 6, in the 12.5 m deepwater phase-II project of the Yangtze River below Nanjing.We also discuss the principle of the measurement and summarize its applications.