The comprehensive harnessing of " retaining , draining , discharging , regulating and excavating " and measures of sediment utilization have been pointed out . dredging river for deposition reduction is one of the key methods but the key technology of dredging river for deposition reduction is still short of systematic research and demonstration 為此,提出“攔、排、放、調(diào)、挖”等多種綜合治理措施,其中,挖河減淤是其中關(guān)鍵措施之一,但對于挖河減淤這項(xiàng)關(guān)鍵技術(shù)還缺乏系統(tǒng)的研究與論證。