Study on the Influencing Factors of Drop Distance of Flood Control Stone Sliding and Rolling Along the Slope During Throwing
In order to demonstrate the influencing factors of the throwing distance of flood control stone sliding and rolling along the slope dur-ing throwing,based on the working conditions of throwing along the embankment slope in the lower reaches of the Yellow River,a model of throwing flood control stone for daily root removal and reinforcement under ideal conditions was established.The theoretical formulas consider-ing the current velocity,water depth,embankment slope and slope roughness were derived,and then the theoretical analysis results were ver-ified and compared with the flume test to find out the throwing distance law of different shapes of flood control stones.The results show that the larger the current velocity,the deeper the throwing depth,the slower the slope of the river embankment,the larger the slope roughness and the larger the drop distance of the flood control stone.The different shapes of flood control stones have different drop distances,and in the case of other factors are the same,the four-sided stone block has the smallest drop distance,which is the optimal shape.Using reinforced concrete shell and sandstone core to make a new type of large volume composite flood control stone,the field test is carried out in the lower Yellow River,and the falling distance is in good agreement with the calculated results.
flood control stonedrop distanceflume testlower reaches of the Yellow River
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