基于FDEM的岩石颗粒破碎后碎片形状的统计分析

周剑,马刚,周伟,程勇刚,黄泉水,曹学兴

Statistical analysis of fragment shape of rock grain after crushing based on FDEM

Jian ZHOU,Gang MA,Wei ZHOU,Yong-gang CHENG,Quan-shui HUANG,Xue-xing CAO

表 4 不同形状指标累积分布的拟合参数

Tab.4 Fitting parameters of cumulative distribution for different shape descriptors

颗粒 ${S_{\rm{f}}}$ ${S / L}$ ${\psi _{{\rm{3D}}}}$ ${C_{\rm{x}}}$ $q$ $a$ $b$ $a$ $b$ $a$ $b$ G1 2.345 0.506 5.248 0.617 12.330 0.828 3.854 G2 1.881 0.503 3.530 0.601 13.200 0.852 2.810 G3 2.402 0.527 4.618 0.604 10.020 0.834 4.289 G4 2.455 0.543 4.213 0.613 10.620 0.811 4.064 G5 2.193 0.518 4.280 0.606 12.730 0.842 4.056 G6 2.292 0.525 4.078 0.609 11.590 0.804 5.400 G7 2.242 0.525 4.300 0.607 9.881 0.809 3.736 G8 2.595 0.557 4.260 0.617 10.990 0.844 4.093 G9 1.907 0.487 4.327 0.596 12.220 0.871 5.366