Abstract Filling and discharge tests of reduced-scale and full-scale squat silos with aboveground conveying channels are carried out to investigate the pressure distribution and the overpressure evolution on the wall and the channel. The filling tests imply that the pressure distribution on the wall bottom is significantly influenced by the channel. Rankine’s active earth pressure equation gives accurate prediction of the lateral pressure on the wall, which is overestimated by the Jaky’s equation. The filling pressure on the channel wall is related to the stored material heights caused by the repose cone. The arch effect of the channel and the equilibrium effect of the wall friction in the squat silos should not be overrated. The shallow buried theory gives more reasonable prediction of filling pressure on the wall and the channel in the squat silos. The discharge tests show the overpressure coefficient does not increase with the increase of the discharge eccentricity. Meanwhile, the aspect ratio has a great influence on the overpressure coefficient. An overpressure on the top wall and the side wall of the channel is observed in multi-scale discharge tests. It is suggested that the overpressure coefficient of the channel should be considered when calculating the discharge load.

中文翻译：

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带地上输送通道的矮筒仓充放料多尺度试验研究

摘要 对带地上输送通道的小型和全尺寸矮筒仓进行了充排试验，研究了筒壁和通道上的压力分布和超压演化。填充试验表明，墙底压力分布受通道影响很大。Rankine 的主动土压力方程可以准确预测壁上的侧压力，而 Jaky 方程高估了该压力。通道壁上的填充压力与休止锥引起的储存材料高度有关。不应高估通道的拱形效应和矮筒仓壁面摩擦的平衡效应。浅埋理论对矮筒仓内壁和通道的填充压力给出了更合理的预测。排放试验表明，过压系数不随排放偏心率的增加而增加。同时，纵横比对超压系数有很大影响。在多尺度放电测试中观察到通道顶壁和侧壁上的超压。建议在计算排放负荷时考虑通道的超压系数。在多尺度放电测试中观察到通道顶壁和侧壁上的超压。建议在计算排放负荷时考虑通道的超压系数。在多尺度放电测试中观察到通道顶壁和侧壁上的超压。建议在计算排放负荷时考虑通道的超压系数。