Experience of electrochemical strengthening of clayey rocks at quarries of Tikhvin alumina refinery.
Abstract
In the Tikhvin mining district in the open-pit mining method in the sides of the quarries are exposed mainly sandy and clayey rocks of the Carboniferous and overlying Quaternary boulder loams. In a number of quarries of the region, landslides of the sides and rock ledges are observed, and less frequently their slides. During snowmelt or as a result of precipitation, the Quaternary rocks are overmoistened, and their bearing capacity is sharply reduced. Decrease in bearing capacity of boulder loams adversely affects the working conditions of walking excavators: their maneuverability decreases, the base of the excavator often sinks into the ground up to 0.4–0.5 m, sometimes the bearing capacity of the over-moistened soil is insufficient and excavators without additional measures (sand and gravel-pebble cushions, scaffolding under the timber, etc.) cannot work at all ....
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References
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