Известия Томского политехнического университета: Инжиниринг георесурсов (Dec 2022)

INVESTIGATION OF GEOMECHANICAL SYSTEM DEFORMATION IN EXPLORATION OF UNDER RIVER STOCKS URUP DEPOSITS

  • Vladimir I. Golik,
  • Oleg Z. Gabaraev,
  • Khambi H. Kozhiev,
  • Sergey O. Versilov

DOI
https://doi.org/10.18799/24131830/2022/12/3627
Journal volume & issue
Vol. 333, no. 12
pp. 122 – 128

Abstract

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Relevance: assessment of the possibility of preserving the mineral resource base of the enterprise by minimizing the reserves in the security areas under the Urup River while maintaining the stability of the Earth's surface. Objective: to determine and propose the optimal parameters of ore extraction technologies in the zone of influence of the Urup River with the preservation of the earth's surface under technogenic influence. Objects: the Earth's surface, native massifs and artificial massifs made of hardening mixtures erected in the developed treatment space. Methods: modeling of safe conditions for the extraction of ores from pillars in the zone of influence of the river, carried out using a complex of well-known and original laboratory, analytical and field methods. Determination of the patterns of behavior of water-saturated rocks is carried out in the laboratory with imitation of processes in riverine pillar, by assessing the phenomenon of immersion of the pillar in the water-weakened soil of the treatment work. Results. Quantitative values of horizontal deformations limiting for these conditions are determined. The method of forecasting the process of rock movement based on calculations is substantiated. A methodology was developed to assess the possibility of applying the technology of continuous ore extraction in the Urup River zone, based on the permissible deformations of the Earth's surface and compression of the laying mixtures. The authors experimentally justified possibility and boundary conditions of dredging of stocks of pillars under the river by the pillar-and-room development system with the laying of the worked-out space with solid mixtures to ensure the safety of the Earth's surface. Measures are recommended to ensure the stability of the outcrops of the treatment workings in the period between the formation of the treatment chambers and their laying, on the direction of development of the treatment works and to determine the permissible spans of the workings.

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