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Hydromechanical Coupling Characteristics of the Fractured Sandstone under Cyclic Loading-Unloading [PDF]
Geofluids, 2020 The mechanical and hydraulic properties of rock mass play a crucial role in underground engineering. To study the effect of hydraulic pressure, confining pressure, and axial cyclic loading-unloading on variation of the deformation and permeability in fractured rock mass, the coupling triaxial experiment of sandstone was conducted.
Tong Zhang +5 more
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Applied SciencesDuring the formation of deep rock bodies, such as hot dry rock, they are frequently exposed to high temperatures and repeated stress perturbations. The prolonged interaction of these two factors is a potential cause of deep underground rock instability ...
Fan Zhang +5 more
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Advances in Materials Science and Engineering, 2018 Uniaxial cyclic loading-unloading compression experiments with schemes of six loading rates and six unloading rates were carried out on the combined testing platform. Impact of loading and unloading rates on rock AE characteristics was revealed.
Mingwei Zhang +4 more
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Energy Science & Engineering, 2019 To further more deeply understand the influence of cyclic loading‐unloading on coal seams during mining and reduce the rock burst and coal and gas outburst disasters and ensure safety during coal mining, triaxial cyclic loading‐unloading tests were ...
Yapei Chu, Haitao Sun, Dongming Zhang
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BuildingsTo address loading and unloading issues in civil and hydraulic engineering projects that employ coarse-grained soil as fill material under plane strain conditions during construction and operation, cyclic loading–unloading large-scale plane strain tests ...
Zhi Wang +3 more
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Experimental Study on Mechanical and Damage Evolution Characteristics of Coal during True Triaxial Cyclic Loading and Unloading. [PDF]
Materials (Basel), 2023 Research on the mechanical properties and damage evolution of coal during true triaxial cyclic loading and unloading is of great significance for maintaining the long-term safety and stability of underground engineering structures in coal mines.
Jiang C +5 more
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Journal of Materials Research and Technology, 2023 Drilling gas drainage boreholes in coal mines is a major measure to prevent gas disasters in coal mines. However, coal mining disruptions can affect the stability and shape of gas drainage boreholes.
Xiaoyan Sun, Zihan Chen, Quanle Zou
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Applied Sciences, 2023 In many underground engineering projects, rocks are often subjected to cyclic loading and unloading, such as repeated excavation of roadway surrounding rock, which will lead to damage to underground rocks, and the energy of rocks also changes. Therefore,
Xiaoyu Lu +3 more
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Advances in Materials Science and Engineering, 2021 To investigate the energy evolution characteristics of sandstone under static-quasi-dynamic loading rates (1.0 × 10−3, 5.0 × 10−3, 1.0 × 10−2, 5.0 × 10−2, and 1.0 × 10−1 mm/s), the uniaxial compression tests, the uniaxial cyclic loading-unloading tests ...
Zhixi Liu +5 more
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Variation law of coal permeability under cyclic loading and unloading [PDF]
Thermal Science, 2019 In the excavation process, the coal pillar will undergo shear failure due to repeated loading and unloading from mining stress. Meanwhile, plastic flow will occur after shear failure. The permeability change of the coal pillar under plastic flow is closely related to the loading path.
Jingna Guo +6 more
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