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Relationship between slurry density and bed flow state
Figures of the Article
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Slag discharge situation of slurry shield tunneling in a tunnel project in Anhui Province
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Rheological curve of slurry
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Schematic diagram of contact mechanics model
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Mass proportion of gravel with different particle sizes
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Models for gravel particles with different shapes
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3D model and mesh division of slurry discharge pipeline
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Test materials for settlement of rock particle
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Curves of average settling velocity of rock particles
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Schematic diagram of gravel transport morphology
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Schematic diagram of impact of gravel bed on slurry inside pipeline
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Cross section distribution of slurry velocity and pressure in second simulation group
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Schematic diagram of model for stress on gravel
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Schematic diagram of movement forms of gravel
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Velocity distribution of gravel beds with different sizes
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Diagram of relationship between gravel size and bed flow state
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Effects of gravel size on increase of slurry pressure and flow velocity in pipelines
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Velocity distribution of gravel beds with different shapes
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Relationship between gravel shape and bed flow state
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Effects of gravel shape on increase of slurry pressure and flow velocity in pipelines
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Velocity distribution of gravel bed transported by slurry with different densities
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Relationship between slurry density and bed flow state
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Effects of slurry specific gravity on increase of slurry pressure and flow velocity in pipelines
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Velocity distribution of gravel bed transported by slurry with different flow rates
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Relationship between slurry flow rate and bed flow state
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Effects of slurry flow rate on increase of slurry pressure and flow velocity in pipelines
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Zoning map of sedimentary risk for simulation groups 1~16
Tables of the Article
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Simulation parameters of rocks
密度/
(g·cm-3)弹性模量/
GPa泊松比 抗压强度/
MPa2.70 17.5 0.16 42.5~116.2 -
Contact parameters for simulation
相互作用 恢复系数 静摩擦系数 滚动摩擦系数 颗粒-颗粒 0.4 0.32 0.012 颗粒-管道 0.5 0.28 0.01 -
Simulation plans
模拟
组号砾石
形状砾石尺寸/
cm砾石
数量泥浆流速/
m/s泥浆相对质量密度 1 纺锤形 2.5 2500 2.0 1.15 2 纺锤形 3.0 2500 2.0 1.15 3 纺锤形 3.5 2500 2.0 1.15 4 纺锤形 4.0 2500 2.0 1.15 5 圆形 — 2500 2.0 1.15 6 纺锤形 — 2500 2.0 1.15 7 三角形 — 2500 2.0 1.15 8 条形 — 2500 2.0 1.15 9 三角形 3.0 2500 1.5 1.15 10 三角形 3.0 2500 2.0 1.15 11 三角形 3.0 2500 2.5 1.15 12 三角形 3.0 2500 3.0 1.15 13 纺锤形 2.5 2500 2.0 1.05 14 纺锤形 2.5 2500 2.0 1.15 15 纺锤形 2.5 2500 2.0 1.25 16 纺锤形 2.5 2500 2.0 1.35
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