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Erschienen in: Geotechnical and Geological Engineering 3/2022

26.08.2021 | Original Paper

Frack Evolution and Destruction Characteristics of Mining Bottom Plate on Pressurized Water Based on Similar Simulation

verfasst von: Xiaolei Wang

Erschienen in: Geotechnical and Geological Engineering | Ausgabe 3/2022

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Abstract

The occurrences of breakage and water inrush disasters of working face floor under mining above aquifer are increasing with the mining depth in China. Taking the working face floor above in some Mine as the research object, by theoretical analysis and similar model of fluid–solid coupling, the fracture instability characteristics of working face floor during the mining above aquifer are carried out, the characteristics of cracks evolution is analysed through the digital. The results show that: The “three zones” appear in deep working face floor above aquifer in some Mine; The failure depth of working face floor is 19.2 m and the thickness of effective protection aquiclude is 2.3 m; The stress of floor is increase with distance of open-off out increasing as the work face goes forward facing; The fractures cluster region mainly focuses near the coal seam; The number of fissure reduces with depth of floor increasing; The conclusion indicates that the above-mentioned parameters can be used as the precursor information for monitoring and short-term predicting the water inrush hazards in coalmines application.

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Metadaten
Titel
Frack Evolution and Destruction Characteristics of Mining Bottom Plate on Pressurized Water Based on Similar Simulation
verfasst von
Xiaolei Wang
Publikationsdatum
26.08.2021
Verlag
Springer International Publishing
Erschienen in
Geotechnical and Geological Engineering / Ausgabe 3/2022
Print ISSN: 0960-3182
Elektronische ISSN: 1573-1529
DOI
https://doi.org/10.1007/s10706-021-01980-z

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