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Blasting and mechanical excavation systems are the main methods used in the excavation of rocks masses in mining and construction works. Mechanical excavation is insufficient in the case of very hard rocks masses. Therefore, blasting is widely preferred for the excavation of hard rock masses. Environmental parameters such as ground vibrations, air-shock and fly-rock occur due to blasting. The magnitude of these parameters depend on the explosive per delay, distance between the measurement- and blasting points, geo...

Cemented paste backfill (CPB) is an engineering mixture of mine tailings, cement and water. Tailings can commonly contain sulphidic minerals. In this case, acid mine drainage (AMD) may occur due to the oxidation of sulphidic minerals present in the body of the CPB. In general, AMD lowers the pH of the medium and water environment and may cause heavy metal release. Therefore, AMD potential is an important parameter to be considered with regard to environmental aspect. Static tests are widely used to determine the A...

In this study, the environmental impacts of blasting activities carried out for excavation of a building foundation close to a nearby building were investigated. The study was performed due to the complaints and request of the residents. Before blasting activities (shots), the residents, the investor and the blaster were informed about the environmental effects of blasting, regulations and the measures if an adverse effect occurs. In this scope, 7 shots were accompanied and blast-induced parameters were monitored....

In this study, the effect of physical, chemical and mineralogical properties of mine tailings on the microstructural, mechanical and durability properties of cemented paste backfill (CPB) samples prepared with normal Portland cement were investigated. Depending on the characteristics of the tailings, the difference in strength varied in the range of 6-22% between similar types of tailings. However, higher strength values about 61-86% were obtained when the fine material was removed from normal tailings. Porosity v...