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Prediction of Relationship Among Uniaxial Compressive Strength, Tensile Strength and Shear Strength of Rocks
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Zeng MA1, 2, Feifei WANG3, Aibing LI1, 2
Mining and Metallurgical Engineering | 2025, 45(5) : 49 - 55
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Mining and Metallurgical Engineering | 2025, 45(5): 49-55
• MINING •
Prediction of Relationship Among Uniaxial Compressive Strength, Tensile Strength and Shear Strength of Rocks
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Zeng MA1, 2, Feifei WANG3, Aibing LI1, 2
Affiliations
  • 1.State Key Laboratory of Safety Technology for Metal Mines, Changsha Institute of Mining Research Co., Ltd., Changsha 410012, Hunan, China
  • 2.Hunan Engineering Technology Research Center for Geological Disaster Prevention and Control and Environmental Reconstruction in Mines, Changsha 410012, Hunan, China
  • 3.School of Civil Engineering, Hunan City University, Yiyang 413000, Hunan, China
Published: 2025-10-01 doi: 10.3969/j.issn.0253-6099.2025.05.008
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To reveal the relationship among uniaxial compressive strength, tensile strength and shear strength, 159 sets of rock mechanics data collected from 38 mines were taken as samples. Firstly, the relationship between uniaxial compressive strength and tensile strength was characterized by data analysis, and the range of uniaxial compressive and tensile strength in the formulae for calculating shear strength was calibrated. Then, a BP neural network prediction model was constructed, with which the shear strength of rocks can be predicted with uniaxial compressive strength and tensile strength as the input layer. The results show that: the uniaxial compressive strength of rock is 7.6-27.8 times tensile strength; the cohesion value obtained from multiple comparison tests is 1.0-2.2 times that from the original empirical formula, and the tangent value of internal friction angle is 0.35-1.00 times that from the original empirical formula, presenting high confident and reliable results; based on comparison between the predicted value with BP neural network and the actual value, the cohesion deviation ranges from -10.53 MPa to 20.12 MPa, and the internal friction angle deviation ranges from -18.43° to 28.97°, exhibiting an overall normal distribution.

uniaxial compression test  /  shear strength  /  compressive strength  /  tensile strength  /  cohesion  /  internal friction angle  /  BP neural network  /  empirical formula  /  parameter conversion
Zeng MA, Feifei WANG, Aibing LI. Prediction of Relationship Among Uniaxial Compressive Strength, Tensile Strength and Shear Strength of Rocks[J]. Mining and Metallurgical Engineering, 2025 , 45 (5) : 49 -55 . DOI: 10.3969/j.issn.0253-6099.2025.05.008
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Year 2025 volume 45 Issue 5
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doi: 10.3969/j.issn.0253-6099.2025.05.008
  • Receive Date：2025-03-27
  • Online Date：2026-03-18
  • Published：2025-10-01
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  • Received：2025-03-27
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Affiliations
    1.State Key Laboratory of Safety Technology for Metal Mines, Changsha Institute of Mining Research Co., Ltd., Changsha 410012, Hunan, China
    2.Hunan Engineering Technology Research Center for Geological Disaster Prevention and Control and Environmental Reconstruction in Mines, Changsha 410012, Hunan, China
    3.School of Civil Engineering, Hunan City University, Yiyang 413000, Hunan, China
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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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