Experimental Research on Shear Strength Characteristics of Soil-Rock Mixtures

Zhou, Zhijun; Han, Dandan; Yu, Wei; Dong, Yaqin

doi:10.14311/cej.2019.03.0030

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…In the fractured rock strength prediction model, most of the machine learning algorithms are the theoretical basis, through the search for data experience to establish a prediction model. Zhongping, Y et al established the shear strength prediction model of the soil-rock mixture by using the fitting of solid test data and numerical test data 9 . Yu, L et al established a jointed rock strength prediction model based on acoustic emission characteristic parameters 10 .…”

Section: Introductionmentioning

confidence: 99%

Strength prediction model of fractured dolomite and analysis of mechanical properties based on PFC3D

Chen

Rao

Zhao

et al. 2023

Preprint

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In order to study the mechanical properties of fractured dolomite, this paper first uses the rubbing method to count the surface fracture of the dolomite rock samples, obtains the main parameters of the fracture characteristics, and then carries out the uniaxial compression test to obtain the uniaxial compressive strength of the dolomite rock. Then, the Pearson correlation coefficient and the maximum information coefficient (MIC) are used to analyze the fracture characteristics. The three-times polynomial is used to preprocess the original data, and the three-classification strategy is used to improve the logistic regression algorithm to predict the dolomite strength. Finally, the significant order of the influence of fracture characteristics on rock strength is judged by numerical simulation software PFC3D, and the dip angle effect of rock fracture is explained from the perspective of fracture propagation. The results show that: 1) When the regularization coefficient λ = 10000, the algorithm has the highest prediction accuracy and the strongest model generalization ability. 2) The numerical simulation analysis software PFC3D can accurately invert rock failure process and characteristics, and the order of influence of fracture characteristics on rock strength is inclination > length > position. 3) When α = 0° ~ 90°, the peak strength decreases first and then increases. The greater the peak strength of the rock, the more obvious the crushing phenomenon, and the worse the wing fracture expansion ability. When α = 60°, the peak strength is the lowest.

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Section: Introductionmentioning

confidence: 99%

Strength prediction model of fractured dolomite and analysis of mechanical properties based on PFC3D

Chen

Rao

Zhao

et al. 2023

Preprint

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“…e change of water content will affect the shear strength of soil, thus affecting the bonding strength of soilrock interface. Zhao et al [21] studied the shear strength change of soil-rock mixture under different factors through laboratory tests, and it was found that the effect degree of water content on the shear strength of soil-rock mixture is just next to the rock content.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Effect of Compaction Work and Defect on the Strength of Soil‐Rock Mixture Subgrade

Yan¹,

Zhan²,

Hu³

et al. 2021

Advances in Materials Science and Engineering

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Soil-rock mixture is a common filling material for earth dam and subgrade. In this study, research concerned on the evolution law of engineering characteristics of soil-rock mixture under different factors and the effect of defect on subgrade strength, and geotechnical tests were carried out to analyze the influence of different factors on engineering characteristics of soil-rock mixture in the study, and the physical model was carried out to analyze the effect of different compaction works on the resilient modulus, and the influence of defect on the strength was explored by manually preset loose body. The test results showed that (1) when the soil-rock mixture was graded, P = 78, the moisture content was 14%, and the engineering characteristics were optimal; (2) there was a positive correlation between compaction times and resilient modulus, and the stress transferred from the subgrade to soil was linearly distributed under the good condition of compactness; and (3) the existence of loose body not only reduces the modulus of resilience but also affects the stress transfer; the larger the loose body, the lower the resilient modulus and the greater the stress transfer.

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Mechanical Characterization of Soil–Rock Mixture Under Varying Block Parameters, Matrix Properties and Matrix Water Content Using Destructive and Non-Destructive Testing

Gayathridevi,

Ray

2024

Indian Geotech J

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Experimental Research on Shear Strength Characteristics of Soil-Rock Mixtures

Cited by 4 publications

References 13 publications

Strength prediction model of fractured dolomite and analysis of mechanical properties based on PFC3D

Strength prediction model of fractured dolomite and analysis of mechanical properties based on PFC3D

Experimental Study on the Effect of Compaction Work and Defect on the Strength of Soil‐Rock Mixture Subgrade

Mechanical Characterization of Soil–Rock Mixture Under Varying Block Parameters, Matrix Properties and Matrix Water Content Using Destructive and Non-Destructive Testing

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