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Grain-size distribution curve of sand and gravel particles
Figures of the Article
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Grain-size distribution curve of sand and gravel particles
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Failure characteristics of specimen
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Numerical triaxial shear tests
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Stress-strain curves of specimen
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Principle of Archard wear model
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Model for pebble particle
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Schematic diagram of particle bed and compression force
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Schematic diagram of tool configuration mode
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Model for spoke type cutter head
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Numerical model for EDEM shield tunnelling model
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Relationship between wear value of ripper and length of.cutting trace
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Wear characteristics of ripper
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Wear characteristics of scraper
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Wear characteristics of radial rippers
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Wear characteristics of circumferential rippers
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Example of actual wear of ripper and scraper
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Design diagram of optimized ripper and scraper
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Comparison of wear conditions of high and low rippers on same trajectory
Tables of the Article
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Proportion of soil with different particle sizes
粒径/mm 60~120 40~60 20~40 < 20 质量百分比/% 6.9 11.6 24.4 57.1 -
Contact parameters
接触部位 参数 静摩擦系数 滚动摩擦系数 恢复系数 颗粒-加载盘 0.7 0.001 0.25 颗粒-边界墙 0.7 0.001 0.25 颗粒间 0.8 0.04 0.75 -
Material parameters
接触部位 参数 剪切模量/Pa 密度/(kg·m-3) 泊松比 盾构机 7.9×1010 7800 0.25 边界墙 7.9×1010 7800 0.25 卵石颗粒 1.12×107 2200 0.27 -
Parameters of shield tunneling
刀盘直径/
m掘进速度/
(m·s-1)刀盘转速/
rpm螺旋输送机转速/
rpm9.0 1.33×10-3 2.8 5.5
