PreprintArticleVersion 1Preserved in Portico This version is not peer-reviewed
Liquid-solid Coupling Simulation Experiment on Distribution Law of Water-conducted Fracture in Weakly Cemented Over-burden Strata
-------- Exemplified by Daliuta Coal Mine in West-ern China
Version 1
: Received: 21 June 2023 / Approved: 21 June 2023 / Online: 21 June 2023 (16:45:47 CEST)
How to cite:
Li, Y.; Zhang, S.; Han, X.; Yang, W.; Liu, J.; Song, S. Liquid-solid Coupling Simulation Experiment on Distribution Law of Water-conducted Fracture in Weakly Cemented Over-burden Strata
-------- Exemplified by Daliuta Coal Mine in West-ern China. Preprints2023, 2023061581. https://doi.org/10.20944/preprints202306.1581.v1
Li, Y.; Zhang, S.; Han, X.; Yang, W.; Liu, J.; Song, S. Liquid-solid Coupling Simulation Experiment on Distribution Law of Water-conducted Fracture in Weakly Cemented Over-burden Strata
-------- Exemplified by Daliuta Coal Mine in West-ern China. Preprints 2023, 2023061581. https://doi.org/10.20944/preprints202306.1581.v1
Li, Y.; Zhang, S.; Han, X.; Yang, W.; Liu, J.; Song, S. Liquid-solid Coupling Simulation Experiment on Distribution Law of Water-conducted Fracture in Weakly Cemented Over-burden Strata
-------- Exemplified by Daliuta Coal Mine in West-ern China. Preprints2023, 2023061581. https://doi.org/10.20944/preprints202306.1581.v1
APA Style
Li, Y., Zhang, S., Han, X., Yang, W., Liu, J., & Song, S. (2023). Liquid-solid Coupling Simulation Experiment on Distribution Law of Water-conducted Fracture in Weakly Cemented Over-burden Strata
-------- Exemplified by Daliuta Coal Mine in West-ern China. Preprints. https://doi.org/10.20944/preprints202306.1581.v1
Chicago/Turabian Style
Li, Y., Junxi Liu and Shilong Song. 2023 "Liquid-solid Coupling Simulation Experiment on Distribution Law of Water-conducted Fracture in Weakly Cemented Over-burden Strata
-------- Exemplified by Daliuta Coal Mine in West-ern China" Preprints. https://doi.org/10.20944/preprints202306.1581.v1
Abstract
Based on the engineering background of Daliuta mining area, the fracture distribution and water movement within the weakly cemented overlay strata are studied through liquid-solid coupling physical simulation and COMSOL numerical simulation test. 3D fracture network of overburden strata in mining is plotted based on the result of the physical simulation test. The results showed that the ‘fractured zone’ of the weakly cemented overburden strata in the western area develops more evidently than that in the eastern area ---- wide-opened fractures form at both ends of the working area and this leads to a wide distribution of fractures in the overlying strata.After the initial caving of the roof, height of the penetrating fractures increases rapidly and the separated strata space becomes the main channel for water flow. Under the action of water flow and rock strata movement, mining-induced fractures in overlying rock display cyclic change of expansion, penetration and closure. When the working face is fully mined, the penetrating fractures in the overlying strata and mining-induced fractures up in the working face become the main passages for water flow. The experimental result provides a reference for underground reservoirs layout and maintenance and water-conserved mining in western China.
Keywords
Weakly cemented strata, distribution of fractures in overburden strata, evolution of water pas-sage; pore water pressure, physical simulation
Subject
Engineering, Mining and Mineral Processing
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
