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THE STABILITY ASPECT OF SEISMIC SAFETY OF STRUCTURES DURING OPEN PIT MINING BLASTING
Abstract
Efficient protection and construction of engine ering and other struct ures in seismically active areas is a series of contradictions, where an optimum solution must be found, which does not comprise a compromise at the expense of safety and security of the people, and which minimizes damage of property. Along with the increase of the needs for energy, the need for open pit mining production increases, which is related to the mass blasting with incr easing quantities of explosive, and nearing to the population centers. The seismic effects of blasting become more common, and also the seismic danger for the structures by mass blasting. The velocity of soil vibration during bl asting depends on the quantity of explosive charge and distance of the blasting site and the affected structure. It is represented by equations containing a series of parameters includi ng most of the relevant influences. These expressions are not uniform, because they de pend on multiple influences, so it is most frequently necessary to experimentally determine them for each individual case. Therefore, seismic safety of structures during blasting is provided by a variety of factors with variable protection efficiency.
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References6
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