Browsing by Subject "waste rock"

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Access status: Open Access ,
Thermal impact on heavy metal bioavailability in burnt rocks of waste heap of Chervonohradska Coal-preparation plant (Lviv Region, Ukraine)
(Wydawnictwa AGH, 2024) Kochmar, Iryna; Karabyn, Vasyl; Stepova, Kateryna; Stadnik, Vitalii; Sozanskyi, Martyn
For effective waste management of mining industries is important to investigate their physical and mineralogical changes. For this purpose, X-raydiffraction (XRD), thermogravimetry (TG), derivative thermogravimetry (DTG), and differential thermal analysis (DTA) methods were used. Changes in the contents of mobile forms of heavy metals in rocks were investigated using an acetate-ammonium buffer solution with a pH of 4.8 after burning rocks at a temperature of 800–850°C. The obtained data indicated the significant role of the mineral composition in the thermal behavior of the rock samples and the subsequent influence of the thermal processes on the changes in the bioavailability of heavy metals.
Access status: Open Access ,
Wpływ konsolidacji dynamicznej podłoża na deformacje sąsiadującego terenu
(Wydawnictwa AGH, 2009) Łupieżowiec, Marian; Sękowski, Jerzy
In paper possibilities of mining lands development in Upper Silesia are presented. Subsoil of described lands is an embankment compound with waste rock. One of the most efficient methods of the subsoil strengthening is dynamic Menard's consolidation, which is suitable especially for non-homogeneous and loose soils. Besides compaction of soil layers, this strengthening causes the harmful waves propagation and the deformation of the surrounding lands. As an example it presented the construction of the housing estate »Oak Terraces« in Katowice. It presented technological parameters of used dynamic consolidation and measurement results of settlements of the surrounding ground and buildings existing on them.