Power plant ash as a backfill material for subsidence mitigation and mining district recovery: a review and case study in Zonguldak, Turkiye

Bilen M., Toroglu I., YILMAZ E.

INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1080/17480930.2025.2565498
  • Dergi Adı: INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Applied Science & Technology Source, Compendex, Computer & Applied Sciences, Environment Index, Geobase, Greenfile, INSPEC, Pollution Abstracts
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Evet

Özet

This study investigates the use of fly ash (FA) as a sustainable backfilling material in underground coal mining in Zonguldak, T & uuml;rkiye, aiming to reduce land subsidence, enhance void stability, and support ecological recovery. Laboratory analyses assessed FA's physical, chemical, and hydraulic properties, while Darcy and channel-flow tests simulated drainage behaviour. Findings show FA is mainly fine-grained (94% < 0.5 mm) with hydraulic conductivity of 0.02-0.03 cm/s and high SiO2, Al2O3, Fe2O3 contents ( > 70%), indicating strong pozzolanic potential. Strength tests confirmed FA - cement blends effective, highlighting FA's role in sustainable mining and circular economy.