Phenomenon of volumetric compression of filling mixtures

Relevance. The need to improve methods for regulating the level of stresses and deformations of ore-bearing rocks for the targeted use of energy released during work when transferring the laying arrays to the volumetric compression mode. Aim. To develop methods for mining ores that allow regulating the level of stresses and deformations for the targeted use of energy released during work when transferring arrays to the volumetric compression mode. Methodology. The goal is achieved as a result of analyzing the conditions of underground mining of solid mineral deposits and researching ways to convert artificial arrays into volumetric compression conditions using an accepted arsenal of methods and devices for their implementation. Results. The paper presents the data on methods of transferring arrays to a state of volumetric compression are, including: tilting the laying array onto the ore massif, creating protective arrays, strengthening insufficiently stable enclosing rocks with anchors and cables, feeding a hardening mixture to beaten and mined ore, beating ore onto a discrete rock deposit, and extinguishing the depleted space by laying with various hardening mixtures. The author has developed the typification of the ways of introducing arrays into volume compression mode. The paper shows the necessity of substantiating the technical feasibility and economic feasibility of technologies for underground block leaching of metals from ores. The author obtained the patterns of behavior of stress-deformed arrays under conditions of volumetric compression and developed the condition for the geomechanical balance of the ore–rock–artificial massif system with man-made intervention. The parameters of technologies for controlling the state of ore-bearing arrays when they are put into volumetric compression mode are recommended. The transfer of bookmark arrays to volumetric compression conditions is one of the recommended methods that comprehensively solves the main tasks of mining, including environmental and technological safety, technical and economic.