Investigating the Evolution Law and Fracture Mechanism of Overlying Coal-Bearing Strata Caused by Shallow Multi-Seam Mining in a Gully Area DOI Creative Commons
Xiaoshen Xie, Enke Hou,

Bingchao Zhao

et al.

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(5), P. 2649 - 2649

Published: March 1, 2025

Compared with single coal seam mining, the stratum damage induced by shallow multi-seam mining is more severe and poses a risk of mine disasters that threaten safety personnel. In order to reveal characteristics mechanism strata damage, in this paper, field measurement, numerical simulation mechanical analysis are used study development dynamic evolution laws overburden explain water-conducting fracture zone (WCFZ) surface cracks. The height WCFZ exceeds 31.68, which higher than empirical value area. There self-healing activation for fissures related hinge rotation deflection inclined structure. However, maximum subsidence coefficient crack angle does not alter, but complexity activity increases. law closely breaking key strata, while controlled form block instability topography. addition, horizontal staggered model conductive reducing constructed, method has been proposed lessen landslides brought on

Language: Английский

Investigating the Evolution Law and Fracture Mechanism of Overlying Coal-Bearing Strata Caused by Shallow Multi-Seam Mining in a Gully Area DOI Creative Commons
Xiaoshen Xie, Enke Hou,

Bingchao Zhao

et al.

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(5), P. 2649 - 2649

Published: March 1, 2025

Compared with single coal seam mining, the stratum damage induced by shallow multi-seam mining is more severe and poses a risk of mine disasters that threaten safety personnel. In order to reveal characteristics mechanism strata damage, in this paper, field measurement, numerical simulation mechanical analysis are used study development dynamic evolution laws overburden explain water-conducting fracture zone (WCFZ) surface cracks. The height WCFZ exceeds 31.68, which higher than empirical value area. There self-healing activation for fissures related hinge rotation deflection inclined structure. However, maximum subsidence coefficient crack angle does not alter, but complexity activity increases. law closely breaking key strata, while controlled form block instability topography. addition, horizontal staggered model conductive reducing constructed, method has been proposed lessen landslides brought on

Language: Английский

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