黄河下游修筑大堤,多年来都是采用人工挖运土料拖拉机碾压的施工方法,控制工程质量的标准一般是:铺土厚度25厘米,碾压6～8遍,压实后的干容重达到1.5吨/立米以上。自1979年开始,黄河下游逐步建立了机械化土方施工队伍,到目前已拥有铲运机130余台,年生产能力300余万立米。由于过 The construction of the embankment in the lower reaches of the Yellow River has been the construction method of artificial digging earth tractors over the years. The standard for controlling the project quality is generally: the thickness of pavement is 25 cm, the compaction is 6 to 8 times, and the dry weight after compaction reaches 1.5 tons / cubic meters or more. Since 1979, a mechanized earth-moving construction team has been gradually established in the lower reaches of the Yellow River. So far, it has owned more than 130 scrapers and an annual production capacity of over 3 million cubic meters. Because of it