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- W4310249251 abstract "A series of laboratory tests were conducted, analyzing the influence of stress level and infiltration time on the creep properties of the coal-rock. The total damage variable based on damage mechanics is defined based on the coupling of the infiltration damage variable based on macro-benchmark variable and the stress damage variable based on creep timeliness, by characterizing the pattern of the infiltration–stress coupling effect on the total damage variable. The study shows that coal-rock underwent a process from surface drying and shrinkage to water absorption and swelling to water-filled infiltration damage in the infiltration test. With the increase of infiltration time, the water content of coal-rock tended to increase and eventually stabilizes, while the uniaxial compressive strength was gradually decreased. With the increase in stress level and infiltration time, the stable creep strain of coal-rock kept increasing, which accelerated creep advance, and its internal damage continued to accumulate and eventually led to destabilization damage. At the same stress level, mechanical parameter continued to decrease. Comparing the theoretical model of infiltrated coal-rock creep with the experimental data, the model developed in this paper reflected the whole process of infiltrated coal-rock creep deformation and damage and can characterize the influence of infiltration time and stress level on coal-rock creep properties." @default.
- W4310249251 created "2022-11-30" @default.
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- W4310249251 date "2022-11-28" @default.
- W4310249251 modified "2023-10-15" @default.
- W4310249251 title "Experimental study on creep characteristics of infiltrated coal-rock under load" @default.
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- W4310249251 doi "https://doi.org/10.1007/s00419-022-02331-x" @default.
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