Hydraulic Characterization of a Self-Weight Compacted Coal

• Autorzy: Federico Antonio Mario , Bottiglieri Osvaldo , Cafaro Francesco , Elia Gaetano

Identyfikatory

DOI

10.2478/sgem-2019-0031

• Języki publikacji: EN

Abstrakty

EN

Water infiltration through coal stocks exposed to weather elements represents a key issue for many old mining sites and coal-fired power plants from the environmental point of view, considering the negative impact on human health of the deriving groundwater, soil and air pollution. Within this context, the paper investigates the hydraulic behaviour of a self-weight compacted unsaturated coal mass and its impact on the numerical prediction of infiltration induced by rainfall events. In particular, the work focuses on the experimental investigation carried out at different representative scales, from the grain scale to physical modelling. The material, when starting from uncompacted conditions, seems to be characterized by metastable structure, which tends to collapse under imbibition. In addition, direct numerical predictions of the seepage regime through a partially saturated coal mass have been performed. As the compaction of the coal stock induced by dozers has not been taken into account, the numerical simulations represent a conservative approach for the assessment of chemical pollution hazard associated to water infiltration into a real stockpile under operational conditions.

Słowa kluczowe

EN

environmental engineering; seepage; coal stocks; unsaturated soils; porous-media characterisation; mining issues; environmental issues

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2020
• Tom: Vol. 42, nr 1
• Strony: 48--60
• Opis fizyczny: Bibliogr. 43 poz., tab., rys.

Twórcy

autor

Federico Antonio Mario

• Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Technical University of Bari (Politecnico di Bari), via Orabona 4, 70125 Bari, Italy

autor

Bottiglieri Osvaldo

• Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Technical University of Bari (Politecnico di Bari), via Orabona 4, 70125 Bari, Italy

autor

Cafaro Francesco

• Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Technical University of Bari (Politecnico di Bari), via Orabona 4, 70125 Bari, Italy

autor

Elia Gaetano

• Department of Civil, Environmental, Land, Building Engineering and Chemistry (DICATECh), Technical University of Bari (Politecnico di Bari), via Orabona 4, 70125 Bari, Italy

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).