我局70年代中期从日本进口的750m~3/h链斗式挖泥船在承担某港35000t级泊位、港池及调头区的施工中,遇到粘性和附着力很强的土壤,泥土严重粘斗,而且经常由于泥阱中的泥滑不出而堵泥阱,图1为泥阱发生堵塞的现象。堵泥阱现象(以下简称堵阱现象)一旦发生即必须停机排除。由于泥土既硬又粘,清除非常困难,且浪费时间,清除堵阱的时间约为2h,最长的达6h,而且堵阱现象频繁发生,最多时8h内竟出现4次,严重影响 The 750m ~ 3 / h chain bucket dredger imported from Japan in the mid-1970s by our bureau encountered serious viscous and highly adhered soil during the construction of 35000t berth, Sticky bucket, and often due to mud trap in the mud slide out of the mud trap, Figure 1 for the mud trap occlusion phenomenon. Stuffing mud trap phenomenon (hereinafter referred to as the trap phenomenon) in the event of a shutdown must be ruled out. Since the soil is both hard and sticky, it is very difficult to remove and wasting time. The time for removing the trap is about 2 hours and the longest is 6 hours. The phenomenon of frequent blockage occurs at most within 4 hours, causing a serious impact