Investigation of mechanical properties and crack propagation in pre-cracked marbles using lattice-spring-based synthetic rock mass (LS-SRM) modeling approach

被引：20

作者：

Bastola, Subash ^{[1
,2
]}

Cai, Ming ^{[1
,2
,3
]}

机构：

[1] Laurentian Univ, MIRARCO, Sudbury, ON, Canada

[2] Laurentian Univ, Bharti Sch Engn, Sudbury, ON, Canada

[3] Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang, Liaoning, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2019年 / 110卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

LS-SRM modeling; Non-planar cracks; Pre-cracked marble; Crack propagation; Unconfined/confined compressive strength; Deformation modulus; BONDED-PARTICLE MODEL; DISCRETE ELEMENT METHOD; FRACTURE COALESCENCE; UNIAXIAL COMPRESSION; PREEXISTING CRACKS; FAILURE BEHAVIOR; BRITTLE-FRACTURE; MOLDED GYPSUM; FLAWS; STRENGTH;

D O I：

10.1016/j.compgeo.2019.02.009

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In this study, progressive failure and mechanical properties of pre-cracked marbles with planar or non-planar cracks are studied using the lattice-spring-based synthetic rock mass (LS-SRM) modeling approach. The modeling results show that a combination of wing, anti-wing, shear, and secondary cracks are observed in models with pre-existing planar cracks. Complex cracking mechanism is observed in models with pre-existing nonplanar cracks. Both the peak strength and the deformation modulus decrease with the increase of the crack angle, crack length, ligament angle, ligament length, and number of cracks. The influence of crack waviness on the mechanical properties of cracked synthetic model is high only when the crack persistency is large.

引用

页码：28 / 43

页数：16

共 50 条

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