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Information × Registration Number 0224U033080, (0123U102631) , R & D reports Title Development of technology for the restoration of lands disturbed by mining operations by forming backfill masses based on natural and technogenic materials popup.stage_title Розробка технології відновлення порушених гірничими роботами територій шляхом формування закладних масивів на основі природно-техногенних матеріалів Head Petlovanyi Mykhailo V., Кандидат технічних наук Registration Date 17-12-2024 Organization Dnipro University of Technology popup.description1 To create a scientific-technical basis for the formation of a safe, stable filling mass from natural and technogenic materials based on a comprehensive research of their optimal physical and mechanical, as well as chemical properties and interactions for the effective restoration of lands disturbed by mining operations and improvement of the social-economic and environmental conditions in the mining regions popup.description2 The purpose of the research project is to create a technology for forming safe, stable backfill masses from natural and technogenic materials based on a comprehensive study of their optimal physical-mechanical and chemical properties, as well as their interaction for the effective r A number of regularities of hydration processes of binders have been established based on the properties of electrical conductivity, rheological characteristics of mixtures, changes in the strength and modulus of elasticity of the paste backfill depending on the component composition and hardening time; a model of geofiltration processes in the closed quarry area under conditions of complex technogenic impact of mining facilities was developed and tested; a quantitative and qualitative geomechanical assessment of the stability of a traditional bulk backfill massif made of waste rock and a combined one consisting of a monolithic paste backfill and layers of overburden rock is provided; expanded knowledge and understanding of the physical and mechanical properties of paste backfill when hardening conditions under the influence of environmental climatic conditions. An innovative technology for restoring the disturbed earth’s surface based on the formation of a combined backfill mass has been developed and implemented on the example of a selected closed quarry. Technological chains and the sequence of processes for performing backfilling operations have been compiled. The layout of the mobile backfill complex, technological parameters of the processes of preparation, transportation and formation of a combined backfill mass from cemented paste backfill and rock backfill using overburden rocks have been substantiated, taking into account the seasonal approach. An economic assessment of the proposed technology for restoring the earth’s surface based on the formation of backfill masses is provided using the example of the selected closed K. Liebknecht Quarry. Product Description popup.authors Borysovska Olena O. Malashkevych Dmytro S. Popovych Vasyl V. Sai Kateryna S. Khalymendyk Oleksii V. Chebanov Maksym O. Sherstiuk Yevheniia A. popup.nrat_date 2024-12-17 Close