3D identification and analysis of fracture and damage in soil-rock mixtures based on CT image processing

被引：0

作者：

Sun, Hua-Fei ^{[1
]}

Ju, Yang ^{[2
,3
]}

Xing, Ming-Xu ^{[1
]}

Wang, Xiao-Fei ^{[1
]}

Yang, Yong-Ming ^{[1
,3
]}

机构：

[1] School of Mechanics and Civil Engineering, China University of Mining and Technology(Beijing)

[2] State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology

[3] State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology(Beijing)

来源：

Meitan Xuebao/Journal of the China Coal Society | 2014年 / 39卷 / 03期

关键词：

CT identification; Damage; Fracture; Ratio of rock content; Soil-rock mixture(SRM);

D O I：

10.13225/j.cnki.jccs.2013.1729

中图分类号：

学科分类号：

摘要：

Soil-rock mixture(SRM) is a unique type of discontinuous and inhomogeneous geomaterials. It is very difficult to analyze the deformation and failure of SRM using the experimental techniques and analytical theories of conventional soil mechanics. A novel 3D identification method was proposed to identify the fracture and damage of SRM based on CT and image processing techniques. Using the self-developed identification algorithm and computer program, we extracted and analyzed the mesoscopic characteristics of interior fractures of SRM with various rock contents subject to uniaxial compressive loads. A 3D model was reconstructed to represent the fracture and damage of SRM, based on which the damage evolution and characteristics of SRM under uniaxial compression and the effects of rock contents were determined. It is shown that the properties and evolution of fracture and damage of SRM can be characterized visually and quantitatively through the proposed method. The damage evolution of SRM and the effects of rock closely relate to the rock content. There is a critical ratio of rock content.

引用

页码：452 / 459

页数：7

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