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基于高浊度水的动态沉积原理,堆场疏浚泥被划分为清水层、浑水层和底部淤积层,考虑吹填中疏浚泥泥量、水量的动平衡,建立堆场疏浚泥动态沉积计算模型,预测施工期泥面、浑液面及水位随时间的变化关系,确定所需的围埝高度、沉积区面积及存储容积。通过算例分析泥浆初始颗粒浓度、吹填流量与浑液面沉速对围埝高度、沉积区面积及存储容积的影响。结果表明:吹填流量、浑液面沉速对沉积区面积的影响较大,而泥浆初始颗粒浓度对沉积区面积的影响很小;围埝高度与吹填流量无关,而泥浆初始颗粒浓度、浑液面沉速对围埝高度的影响较大;吹填流量对沉积区存储容积的影响最大,浑液面沉速的影响次之,而泥浆初始颗粒浓度的影响最小。
Based on the principle of dynamic sedimentation of high-turbidity water, the dredged silt in the yard is divided into a clear water layer, a muddy water layer and a bottom silt layer. Considering the dynamic balance of the amount of dredged mud and water in the dredging, the dynamic sediment dredging calculation is established Model to predict the relationship between mud surface, muddy water level and water level over time during the construction period, and determine the required height, area and storage volume. The influences of the initial particle concentration of mud, the flow of blow-fill and the sedimentation velocity of sediment on the height, sediment area and storage volume of the enclosure were analyzed through a numerical example. The results show that the effect of blowing flow rate and sedimentation velocity on sedimentation area is relatively great, but the effect of initial slurry concentration on sediment area is very small. The height of enclosure is not related to the flow of purge, but the initial particle concentration, The effect of sediment deposition velocity on the height of the enclosure was greater. The effect of the blow-fill flux on the storage volume of the sedimentation area was the largest, followed by the sedimentation velocity of the sediment surface, and the effect of the initial particle concentration of slurry was the least.