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首页> 外文期刊>Journal of Hydraulic Engineering >Analytical Approach to Calculate Rate of Bank Erosion
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Analytical Approach to Calculate Rate of Bank Erosion

机译：计算河岸侵蚀率的分析方法

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摘要

Bank erosion consists of two processes: basal erosion due to fluvial hydraulic force and bank failure under the influence of gravity. Because bank resistance force varies with the degree of saturation of bank material, the probability of bank failure is the probability of the driving force of bank failure being greater than the bank resistance force. The degree of saturation of bank material increases with river stage; therefore, the frequency of bank failure is correlated to the frequency of flooding. Consequently, the rate of bank erosion is due to both basal erosion and bank failure, and bank failure is a probabilistic phenomenon. In this paper, for cohesive bank material experiencing planar bank failure, a deterministic approach was adopted for basal erosion analysis, whereas the probability of bank failure was included in the analysis of bank failure. A method for calculating the rate of bank erosion was derived that integrates both basal erosion and bank failure processes, and accounts for the effects of hydraulic force, bank geometry, bank material properties, and probability of bank failure.
机译：堤岸侵蚀包括两个过程：由于水力作用引起的基础侵蚀和重力作用下堤岸的破坏。由于堤坝阻力随着堤坝材料的饱和度而变化，因此堤坝破坏的可能性是堤坝破坏的驱动力大于堤坝阻力的概率。河岸物质的饱和度随河水位的增加而增加。因此，堤岸故障的频率与洪水的频率相关。因此，银行侵蚀的速度既是由于基础侵蚀又是由于银行破产，而银行破产是一种概率现象。在本文中，对于粘性粘结材料遇到平面破坏的情况，采用确定性方法进行基础腐蚀分析，而破坏的可能性则包括在破坏分析中。推导了一种计算堤岸侵蚀率的方法，该方法综合了基础侵蚀和堤岸破坏过程，并考虑了水力，堤岸几何形状，堤岸材料特性和堤岸破坏概率的影响。

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