Results 21 to 30 of about 75,071 (250)
矿业科学学报, 2023 In deep mining, coal-rock is in a state of three unequal forces, and the intermediate principal stress has the influence on the deformation and strength characteristics of coal-rock.
Wang Kai +4 more
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Research on Coal Mechanical Properties Based on True Triaxial Loading and Unloading Experiment
Advances in Civil Engineering, 2021 To study the safety issues caused by coal mine excavation, self-developed simulation of earth interior atmosphere and sound test system was used to perform true triaxial loading and unloading tests of coal.
Yanyan Peng +4 more
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Meitan xuebao, 2023 The intermediate principal stress and unloading have an important influence on the shear failure characteristics of rock. Based on the multifunctional true triaxial fluid-structure interaction test system, the loading and unloading failure tests of ...
Ze WANG +4 more
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Meikuang Anquan, 2021 In order to study the safety problems caused by coal mine excavation, the self-developed ground acoustic process simulation test system was used to carry out true triaxial loading and unloading tests of coal rock under different intermediate principal ...
PENG Yanyan, DENG Haoxiang, FAN Xiao
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Advances in Civil Engineering, 2020 A series of numerical experiments have been conducted to investigate the intermediate principal stress effects on rock failure behaviors. The numerical results show that the strength and deformation of the rock samples are significantly affected by the ...
Shuxin Deng +3 more
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Meikuang Anquan, 2020 In order to study the influence mechanism of intermediate principal stress on surrounding rock deformation of soft rock roadway, taking the soft rock transportation lane of II1053 working face of Zhuxianzhuang Mine in Huaibei Mining Area as the ...
LIU Qinjie, FU Qiang, NI Huining, CHI Xiaolou, WEI Zhen
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Journal of Rock Mechanics and Geotechnical Engineering, 2023 The rock fracture characteristics and principal stress directions are crucial for prevention of geological disasters. In this study, we carried out biaxial compression tests on cubic granite samples of 100 mm in side length with different intermediate ...
Longjun Dong +4 more
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Soils and Foundations, 1998 ABSTRACT Undrained monotonic loading triaxial compression and extension tests were conducted on Toyoura sand. It was found that the shear behavior was more contractive and softer in triaxial extension than in triaxial compression. This difference suggests that the stress conditions, such as the direction of the principal stress and the magnitude of ...
YOSHIMINE, MITSUTOSHI +2 more
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A generalized nonlinear three-dimensional failure criterion based on fracture mechanics
Journal of Rock Mechanics and Geotechnical Engineering, 2023 Based on fracture mechanics theory and wing crack model, a three-dimensional strength criterion for hard rock was developed in detail in this paper. Although the basic expression is derived from initiation and propagation of a single crack, it can be ...
Zhaofeng Wang +3 more
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Analysis of plastic zones in surrounding rocks around a circular tunnel considering the effect of intermediate principal stress and heterogeneity [PDF]
MATEC Web of Conferences, 2019 Based on a modified Mohr-Coulomb criterion with a non-uniform coefficient, a calculation method of plastic zone boundary of surrounding rocks in a circular tunnel in non-uniform stress field is established.
Deng Shuxin +5 more
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