Study of particle breakage behaviour of calcareous sand by dyeing tracking and particle image segmentation method

PENG Yu; DING Xuan-ming; XIAO Yang; CHU Jian; DENG Wei-ting

doi:10.16285/j.rsm.2018.0689

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Study of particle breakage behaviour of calcareous sand by dyeing tracking and particle image segmentation method

更新时间：2026-06-25

- Study of particle breakage behaviour of calcareous sand by dyeing tracking and particle image segmentation method
- Vol. 40, Issue 7, Pages: 2663-2672(2019)
- 作者机构：
  
  1. 重庆大学土木工程学院,重庆,400045
  2. 重庆大学山地城镇建设与新技术教育部重点实验室,重庆,400045
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2018.0689
  CLC： O319.56
- Online First：19 July 2019，
  
  Published：2019
- 稿件说明：
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PENG Yu, DING Xuan-ming, XIAO Yang, et al. Study of particle breakage behaviour of calcareous sand by dyeing tracking and particle image segmentation method[J]. 2019, 40(7): 2663-2672.
DOI：

PENG Yu, DING Xuan-ming, XIAO Yang, et al. Study of particle breakage behaviour of calcareous sand by dyeing tracking and particle image segmentation method[J]. 2019, 40(7): 2663-2672. DOI： 10.16285/j.rsm.2018.0689.

摘要

针对混合粒径钙质砂中不同粒径颗粒绝对破碎量无法获得和现有破碎率难以考虑破碎重叠掩盖破碎量这两个问题开展研究。设计了粗砂、中砂、细砂颗粒集中分布的3种级配钙质砂试样，进行侧限压缩试验。对不同粒径区间钙质砂分别染成不同颜色，拍照获取各粒径区间钙质砂破碎信息；采用Image J软件进行彩色图像颗粒分割、二值化处理、统计各颜色颗粒面积，换算得各颜色颗粒破碎后含量；并提出考虑破碎重叠掩盖的试样累积破碎率指标Ba。结果表明，随压力增大及颗粒分布集中，试样的重叠掩盖破碎量增大。混合粒径钙质砂中的中间粒径（0.25～1.00 mm）颗粒易于破碎，各粒径颗粒破坏模式以颗粒边角破碎为主；累积破碎率Ba值较相对破碎率Br较大，与垂向压力对数值间满足线性关系，为颗粒破碎研究提供了新的思路。

Abstract

The main study of this paper focus on the problems that the absolute breakage amount of particles in a certain size range can not be acquired and the hidden breakage amount can not be considered in the particle breakage rate in a sample. Three kinds of calcareous sands

rich in coarse

medium and fine sands respectively

are subjected to the confined compression test. Particles with different sizes are dyed in different colors

and pictures contain the breakage information of particle in all certain particle size range are taken. Then

the Image J software is employed to segment and binarize these pictures and records the area of particles with different colors

which is used to calculated the content of the particles with different colors after failure. Finally

an accumulated particle breakage Ba

which considers the absolute breakage amount of particles in a certain size range

is proposed. Test results show that with the increase of pressure or the concentration of particle distribution

overlapping breakage of samples increases. Among these calcareous sand samples consisting of particles in different sizes

the sand in intermediate particle sizes (0.25-1 mm) is breakable

and edge and corner breakages are the dominant break pattern in the particles with different sizes. The accumulated particle breakage Ba is larger than the relative breakage Br

and has a linear relationship with the logarithmic value of vertical pressure. The study of this paper provides a new method for the research on particle breakage.

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