133 / 2023-08-05 00:17:38

COMPREHENSIVE MONITORING OF GEODYNAMIC POLYGON OF DEPOSITS IN CENTRAL KAZAKHSTAN

copper ore deposits, geology,induced seismicity, geodynamics, tectonic structure, stress–strain state, rock mass, monitoring, geodynamic polygon, surveying measurements

Information is provided on the copper deposits of Kazakhstan, development of which is carried out in the central region, and their role in development of mining industry. For reliable forecasting and prevention of dangerous geodynamic phenomena in the region of development of groups of fields in Central Kazakhstan, geodynamic polygon was created, which includes modern measuring systems. Using means of geodynamic polygon, important regularities of behavior of bump hazardous  rock mass have been identified and indicator for assessing its condition has been substantiated. Studied region of Central Kazakhstan belongs to category of areas of increased geodynamic risk. This group includes long-term developed copper ore deposits. Need to create geodynamic polygon and conduct comprehensive monitoring observations will ensure stability in technology of raw material extraction, as well as industrial and environmental safety of region as a whole.

     Results of integrated monitoring of geodynamic processes that occur during large-scale and long-term subsoil development are presented. Problem of managing geodynamic processes in such conditions is solved on basis of developed methodology for conducting geomonitoring of state of rock mass, which provides for comprehensive accounting and analysis of all natural and technogenic factors. New scheme of geodynamic processes, methods and means of controlling deformations of rock mass have been developed, which make it possible to obtain information about earth state with high degree of accuracy.

Study purpose is to create points of geodynamic polygon and determine their location in a single coordinate system for conducting integrated monitoring based on geodetic and innovative technologies, which improves accuracy and reduces the time for measuring work. 

  Methodology. Work uses integrated approach, including: study of mining and geological conditions, structural features, physical and mechanical properties of rocks of deposits and conducting instrumental observations based on modern methods and monitoring tools developed by the authors.

    Main results. Article presents results of many years of research by employees of the Kazakh National Research Technical University named after K.I. Satbayev (Satbaey University) on the study of geomechanical and geodynamic processes during large-scale development of subsoil in complex rock masses to ensure their maximum safety and economic efficiency of field development.

As a result of the research, the following were created and introduced into production:

- methodology for maintaining integrated system of geomonitoring;

- new method of creating a geodynamic polygon in the form of local control "bushes" of geodetic and leveling points instead of extended leveling lines on the territory of the Zhilandinsky groups of fields ;

  - designs of permanent (ground and underground) points of forced centering, allowing to increase the productivity and accuracy of observations;

- method for predicting physical and mechanical properties of rocks in the massif ;

- method of laser scanning in study of structural features of rock mass ;

- seismoacoustic method for predicting the stress-strain state of the massif ;

 - method and composition of solution from mining waste to strengthen weakened fractured sections of the pit walls and disturbed sections of underground workings .

 - monitoring of slow movements of the earth's surface on a geodynamic polygon using a GS16 GPS device with a radio modem, which made it possible to quickly and accurately determine position of points in a single coordinate system .  

       Scientific novelty of work lies in establishing pattern of changes in structural features and strength properties of rocks with their depth, which makes it possible to predict the stress-strain state of a rock mass. Created geodynamic polygon is reliable basis for organizing long-term monitoring of deformation processes during large-scale development of the Zhilandinsky groups of deposits.

      Novelty of developed methods and means is confirmed by 5 Patents for inventions and author's certificates of the Republic of Kazakhstan.

       Practical significance. Research results have been implemented at operating mining enterprises and used in educational process of Satbayev University, they can also be used in the design and operation of mining enterprises by open, underground and combined methods to increase level of industrial safety at mines and minimize environmental risks caused by subsoil development.



























   















     Results of integrated monitoring of geodynamic processes that occur during large-scale and long-term subsoil development are presented. Problem of managing geodynamic processes in such conditions is solved on basis of developed methodology for conducting geomonitoring of state of rock mass, which provides for comprehensive accounting and analysis of all natural and technogenic factors. New scheme of geodynamic processes, methods and means of controlling deformations of rock mass have been developed, which make it possible to obtain information about earth state with high degree of accuracy.