Figures of the Article
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Triaxial view of pebble
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Pebbles used in the model test
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Initial testing devices (pipe diameter 150 mm)
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Secondary testing devices (pipe diameter 100 mm)
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Rheological characteristic curves of CMC solution
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Change of starting speed of pebble with shape coefficient under different pipe inclination angles
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Simulation model for pebbles with different shapes
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Curves of movement speed of pebble with different shapes with time
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Comparison between test and numerical results of starting speed of pebbles with different shapes
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Variation of angular velocity during movement of flat pebble and ellipsoidal pebble
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Variation of starting speed of pebble with equal volume particle size (D=150 mm)
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Variation of starting speed of pebble with isometric particle size (D=100 mm)
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Variation of starting speed of pebbles with relative particle size under different inclination angles of
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Stresses on pebbles of horizontal pipeline based on different isometric particle sizes
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Comparison between test and numerical results of starting speed of pebbles with different particle sizes (D=150 mm)
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Variation of starting speed of spherical pebbles with particle size under different inclination angles of pipes
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Variation of pebble starting speed with isometric particle size under different pipe diameters (vertical pipeline)
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Stresses on upstream face of same pebble in pipelines with same flow velocity and different pipe diameters
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Critical starting velocities of spherical and irregular pebbles at each position of pipeline
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Distribution of flow velocity of slurry at special parts of horizontal and inclined pipes under turbulent state
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Distribution of flow velocity of slurry at special parts of horizontal and 60°inclined pipes under turbulent state
Tables of the Article
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Physical and mechanical parameters of soils
材料 浆液黏度/s 浆液密度/(g·cm-3) CMC溶液 22.05 1.15 泥浆 20~35 1.05~1.3 -
Geometric parameters of pebbles with different shapes
标号 密度/
(g·cm-3)形状系数 扁平度 饱满度 等容粒径/
mm29 2.116 0.256 3.958 1.21 36.28 33 2.296 0.351 3.000 1.07 37 2.224 0.471 2.150 1.10 4 2.180 0.548 1.841 1.10 7 2.184 0.635 1.600 1.07 9 2.040 0.728 1.375 1.05 6 2.228 0.803 1.276 1.08 3 2.064 0.904 1.109 1.06 -
Table of geometric parameters of pebbles with different isometric sizes
标号 密度/
(g·cm-3)等容粒径/mm 扁平度 饱满度 形状系数 31 2.893 30.59 2.129~2.222 0.97~1.10 0.470~0.474 36 2.790 38.55 27 2.612 41.71 16 2.664 51.18 18 2.767 59.53 24 2.707 62.85 21 2.786 64.42 -
Geometric parameters of pebbles with different shapes
标号 密度/(g·cm-3) 粒径/mm 右1 2.400 25 右2 2.440 30 右3 2.390 40 右4 2.450 50 右5 2..410 60 右6 2.400 70 右7 2.390 80 -
Parameters of FLUENT and EDEM simulation
参数 渣石 亚克力管 渣石-渣石 亚克力管-渣石 剪切模量/Pa 2.212×1010 3.16×109 — — 泊松比 0.13 0.32 — — 密度/(kg·cm-3) 2000~2800 1190 — — 恢复系数 — — 0.05 0.05 静摩擦系数 — — 0.25 0.25 滚动摩擦系数 — — 0.01 0.01
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