Almost all the sediment yield models of heavy rainfall built in recent years have adopted the assumption of sediment transport concentration of gullies and rivers being equal to 1.
近几年来建立的各类暴雨产沙模型，基本都采用沟道、河川泥沙的输移比等于1的假定。
Meanwhile the author conducts preliminary exploration on ice jam entrainment sediment concentration, total sediment discharge, sediment transport distance and its estimation method;
对冰凌含沙量、输沙总量、输沙距离的估算方法进行了初步探讨；
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