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One of the main tasks of open pit mining, besides maintaining the planned productivity, is to ensure the safety of production and personnel, and to keep the stability of the elements of open pit geotechnology. The open-pit mining operations form a large open-pit excavation for dozens of years, which results in a gradual change in the properties and state of the adjacent rock mass and in a decrease in its strength and elastic characteristics. This circumstance makes periodic monitoring of the geomechanical state of...