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Shear Mechanical Properties and Damage Constitutive Model of Three-dimensional Non-persistent Jointed Rock Mass
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Hua ZHAO1, 2, Zhaoming QIAN1, 2, Bin ZHENG1, 2, Laixin ZHANG1, 2, Rihong CAO3, Rubing YAO3, Xiuzhi SHI3, Xianyang QIU3
Mining and Metallurgical Engineering | 2026, 46(2) : 1 - 7
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Mining and Metallurgical Engineering | 2026, 46(2): 1-7
• MINING •
Shear Mechanical Properties and Damage Constitutive Model of Three-dimensional Non-persistent Jointed Rock Mass
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Hua ZHAO1, 2, Zhaoming QIAN1, 2, Bin ZHENG1, 2, Laixin ZHANG1, 2, Rihong CAO3, Rubing YAO3, Xiuzhi SHI3, Xianyang QIU3
Affiliations
  • 1.China Nonferrous Mining Corporation Limited, Beijing 100029, China
  • 2.Kambove Mining SAS, Likasi 999059, Haut-Katanga, DRC
  • 3.School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
doi: 10.3969/j.issn.0253-6099.2026.02.001
Outline
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Three-dimensional non-persistent joints containing random rock bridges were fabricated by adopting 3D printing technology. Direct shear tests were conducted on specimens with joint persistence of five different percentages under three levels of normal stress. On the basis of test data, the laws of variation of shear strength parameters of three-dimensional non-persistent joints with joint persistence were systematically analyzed. The results show that the peak shear strength of joints decreases obviously with the increase of joint persistence. There is a significant difference in the variation of cohesion and internal friction angle with the increase of joint persistence. Cohesion decreases rapidly in a nonlinear manner, while the internal friction angle remains relatively stable. Furthermore, based on the laboratory direct shear test results, rheological elements were introduced to characterize the shear mechanical behavior of specimens, and a shear damage evolution constitutive model was established for non-persistent jointed rock mass. It is found that the calculated results of the model are in good agreement with the experimental data.

shear mechanics  /  non-persistent joint  /  direct shear  /  shear strength  /  joint persistence  /  damage model  /  rock bridge  /  3D printing
赵华, 钱兆明, 郑斌, 张来鑫, 曹日红, 姚汝冰, 史秀志, 邱贤阳. 三维非贯通节理岩体剪切力学特性与损伤本构模型. 矿冶工程杂志, 2026 , 46 (2) : 1 -7 . DOI: 10.3969/j.issn.0253-6099.2026.02.001
Hua ZHAO, Zhaoming QIAN, Bin ZHENG, Laixin ZHANG, Rihong CAO, Rubing YAO, Xiuzhi SHI, Xianyang QIU. Shear Mechanical Properties and Damage Constitutive Model of Three-dimensional Non-persistent Jointed Rock Mass[J]. Mining and Metallurgical Engineering, 2026 , 46 (2) : 1 -7 . DOI: 10.3969/j.issn.0253-6099.2026.02.001
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Year 2026 volume 46 Issue 2
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.02.001
  • Receive Date：2025-10-28
  • Online Date：2026-10-08
Article Data
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History
  • Received：2025-10-28
Funding
Affiliations
    1.China Nonferrous Mining Corporation Limited, Beijing 100029, China
    2.Kambove Mining SAS, Likasi 999059, Haut-Katanga, DRC
    3.School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2026.02.001
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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