Geophysical monitoring of Sadon field development technology

Abstract

Relevance of the paper is explained by the need to search for still little-used reserves to increase the efficiency of mining production in complicated operating conditions of the ore sites of the Sadon ore node. Aim of the article is to detail the dependence of the massif state on anthropogenic stresses during the development of ore deposits by underground method. Methods. Compliance of technologies for the de-velopment of mineral deposits with the principles of nature management is ensured by studying the dynamics of changes in the parameters of ore-containing massifs. Infrastructure facilities of mining enterprises and the Earth's surface are subject to protection from induced seismic vibrations, especially during mining operations in the unique conditions of protected areas. In the field of extraction of natural resources of the Republic of North Ossetia-Alania with such conditions, a number of geophysical studies have been applied and in-terpreted. Results. Using the possibilities of mathematical modeling by the finite element method, the opera-tion mechanism of compressive stresses in the zone of their interface of the ore whole with the host array is determined. Quantitative criteria for assessing the state of the developed space, depending on its filling or isolation, are obtained. It is proposed to assess the hazard of destruction of the Earth's surface in relation to the maximum stresses in the model to the tensile strength of the material. The results of modeling anthropo-genic stresses on low-molecular materials are presented. It is established that the maximum stresses in the elements of the cleaning chamber develop at the maximum value of the lateral expansion coefficient. It is shown that the filling of the developed chamber space reduces the stress level depending on the strength of the filler. It is determined that in the case of the option with isolation of the developed space without filling, the stress concentration for these conditions is maximum. The information obtained on the behavior of the ore-containing massif is relevant for the design of mining operations during the resumption of mining opera-tions of the Sadon mines, as well as for deposits with similar conditions of localization of mineralization, both when using traditional technologies and when extracting metals with new promising technologies with drilling at the site of localization of mineralization.