HUANG, Zhenzhen. Study on Overburden Failure and Surface Sinkhole Development Law during Extra-Thick Coal Seam Mining beneath Thick Unconsolidated Layers. International Journal of Natural Resources and Environmental Studies, [S. l.], v. 8, n. 5, p. 121–127, 2026. DOI: 10.62051/. Disponível em: https://wepub.org/index.php/IJNRES/article/view/6182. Acesso em: 9 jun. 2026.