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本文介绍了应用信息熵理论研究明渠水力学问题的新概念，借助最大熵原理导得了非宽浅明渠断面流速分布的计算公式及其有关参数，计算结果与试验水槽中毕托管激光测速资料及现场测速资料吻合较好。
This paper introduces a new concept of applying the theory of information entropy to the study of open channel hydraulics. Based on the principle of maximum entropy, the formula for calculating the velocity distribution of non-shallow and shallow channels and its parameters are obtained. The calculated results are in good agreement with the experimental data Speed data consistent with good.