quarry.ppt
- 1. By Argaw Tarekegn 1
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- 3. Quarry is a type of open pit mine from which rock or minerals are extracted. Quarries are generally used for extracting construction materials, such as dimension stone, rubble stone, fine and coarse aggregates etc. Quarries are usually shallower than other types of open-pit mines. By Argaw Tarekegn 3
- 4. Crushed Stone Production By Argaw Tarekegn 4 The following stages are applied in production: Stripping and clearing of overburden Drilling of boreholes in rock and charging with explosives Blasting operations Drilling of boreholes in oversize stone, blasting operations Loading of stone onto transport vehicles and hauling to a crusher plant Screening of crushed stone in size fractions Storage of crushed stone size fractions (Loading and hauling of crushed stone and artificial sand to a construction site in size fraction)
- 5. Dimension Stone Production Processing stages applied in production: Drilling of closely spaced boreholes in rock for subsequent separation of large lumps of stone from the massif. Breaking of these lumps into standard products or similar-size stones. Treatment of stone surface ,dressing ,grinding and polishing. Loading and hauling of stone. By Argaw Tarekegn 5
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- 8. Noise Pollution Blasting Transporting From quarry to Crusher crushing Transporting The product Noise pollution By Argaw Tarekegn 8
- 9. Damage to Biodiversity Biodiversity essentially refers to the range of living species, including fish, insects, invertebrates, reptiles, birds, mammals, plants, fungi and even micro- organisms. Quarrying carries the potential of destroying habitats and the species they support By Argaw Tarekegn 9
- 10. By Argaw Tarekegn 10 Effect on landscape
- 11. By Argaw Tarekegn 11 Effect on landscape ctd
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- 13. Other effects(failure of electric poles) By Argaw Tarekegn 13
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- 19. Quarry site for aggregates for concrete production along the old road i. manual production By Argaw Tarekegn 19
- 20. ii. Production using crushers By Argaw Tarekegn 20
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- 22. Impact due to burning of tires By Argaw Tarekegn 22
- 23. pond in the quarry By Argaw Tarekegn 23
- 24. 3.3.2 Quarry Site for stone production along new road Effect on biodiversity/landscape By Argaw Tarekegn 24
- 25. Pond at the quarry site By Argaw Tarekegn 25
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