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- W4321793890 abstract "To better understand the propagation characterizations of hydraulic fracture (HF) in coal with natural planes (NP), a fully coupled fluid flow-DEM method is employed, and a series of numerical simulations are carried out. The impact of the NP approaching angle (the angle between NP and the horizontal direction), in-situ geo-stress, the fluid flow injection rate on the fracture propagation behavior and breakdown pressure is analyzed. It is concluded that three interaction modes can be simulated, and the existence of NPs with low strength and approaching angles can facilitate the development of more complex fracture networks in coal rock. Intersection mode of HF and NP in coal subjected to different approaching angle is more sensitive comparing to other rock masses. Distinct injection rates, in-situ stress difference of NP also play a key role in determining HF morphology and its interaction mode with NP. The findings in this study may provide a numerical reference for optimizing the design of hydraulic fracturing in coal." @default.
- W4321793890 created "2023-02-25" @default.
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- W4321793890 date "2023-04-01" @default.
- W4321793890 modified "2023-10-15" @default.
- W4321793890 title "Fluid-driven cracking behavior of coal with prefabricated plane: A particle-based hydro-mechanical coupled numerical investigation" @default.
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- W4321793890 doi "https://doi.org/10.1016/j.tafmec.2023.103825" @default.
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