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浮泥的流变特性对于研究浮泥的运动特性至关重要,其中屈服应力作为重要的流变参数,表征使浮泥产生流动状态的临界应力。针对目前大多数研究中浮泥屈服应力确定方法较为单一的情况,作者系统地介绍了浮泥屈服应力的直接确定方法和原理,包括流变学的方法、斜面平衡法、自由流动重力平衡法等。并通过实例,利用流变模型拟合法和自由流动重力平衡法确定连云港区浮泥样本的屈服应力,并对这2种方法得到的结果进行了比较和探讨。
The rheological properties of the floating mud are very important for the study of the movement characteristics of the mud. The yield stress, as an important rheological parameter, characterizes the critical stress that causes the mud to flow. In the light of the relatively simple method for determining the yield stress of the floating mud in most of the current studies, the authors systematically introduced the direct determination methods and principles of the yield stress of the floating mud, including the rheological method, the slope balance method and the free-flowing gravity balance method . Through the example, the yield stress of the floating mud sample in Lianyungang District was determined by rheological model fitting method and free-flowing gravity balance method, and the results obtained by these two methods were compared and discussed.