Integrated disposal of mining waste, an example of rehabilitation the damaged embankment at the RTH tailing dump by the mine overburdention
Abstract: The RTH flotation tailing dump was created by deposition the flotation tailings in the old open pit of the ore body "H", after which it got its name. The tailings dump is located about 500 m southeast of the Bor flotation facility and has been in continuous operation since 1985. At the beginning of exploitation, the RTH tailing dump, the tailings were only pumped into the open pit without cyclones, after that, when the open pit was filled, two sand dams were built to form the storage area, the dam 1 on the north-western side and the dam 2 on the south-eastern side, which are mutually connected by a peripheral embankment. During 2020 and 2021, due to the reduced production in the Bor pit, the smelter slag was processed more in the flotation plant. Although it has good geotechnical properties, smelting slag is not suitable for the construction of dams and embankments because it does not contain the clay particles that represent a binding agent, so when the wind blows on the built crowns of embankments and dams, the great erosion occurs, which threatens the stability of dams on the complete RTH tailing dump. This paper presents the rehabilitation of a damaged embankment with mining overburden, which represents a good example of integrated disposal of mining waste, where another mine waste (mine overburden) is used for the facility rehabilitation containing tailings of the Bor flotation plant, which reduces the need for the new exploitation and excavation the natural materials, earth and stone.
engleski
2023
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Keywords: rehabilitation of dams and embankments, stability, flotation tailing dump, mine overburden, integrated disposal.