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 covering them 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 over-wet soil is insufficient and excavators without additional measures (sand and gravel-pebble cushions, scaffolding under the pile, etc.) can not work at all ....
References
- Gumensky B. M., Novozhilov G. F. Thixotropy of soils and its consideration in the construction of highways and bridges. Avtotransizdat, 1961.
- NovozhilovV. N. Landslides at the mines of the Tikhvin Alumina Plant. In the collection Problems of Engineering Geology of the Leningrad Econ. District, CBTI, 1960.
- Novozhilov V. N. Physical and Mechanical Properties of Overburden Rocks of the Tikhvin Bauxite Deposit. Journal of Mining Institute, vol. XLIV, iss. 2, 1962.
- Novozhilov V.N. Estimation of stability of quarry sides at development of Tikhvin bauxite deposits. Journal of Mining Institute, vol. XLVIII, iss. 1, 1963.
- Novozhilov V.N. Engineering-geological characteristics of Lower Carboniferous rocks of the central part of the Tikhvin mining district. Journal of Mining Institute, vol. XLVIII, iss. 2, 1965.
- Khutashvili A. G. Methods of Laboratory Investigations of Physical and Mechanical Properties of Artificially Strengthened Weak Clay Rocks (on the Example of Electrochemical Strengthening). In proceedings of the Conference on Methods of Laboratory Investigations of Physical and Mechanical Properties of Soils. PH STS Gornoe and LMI, 1965.