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In the areas with long-lasting coal mining (many centuries ago) a number of old mining works have emerged as a communication channel for uncontrolled methane outputs. Disposal of these underground areas represents not only a technical but also an economically challenging task, which requires a combination of technical knowledge from the use of materials and the creation of free spaces with an emphasis...
Hałdy poeksploatacyjne są integralną częścią krajobrazu, na który wpływ ma przemysł wydobywczy. Budujący je materiał jest niejednorodny. W wielu wypalonych lub palących się hałdach znajdują się skały podobne do porcelanitu. W trakcie endogenicznego pożaru wewnątrz hałdy zachodzą kaustyczne przemiany skały płonnej. Bogata w minerały ilaste skała płonna przekształca się w porcelanit. Warunki cieplne...
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