Bulat A.F., Slashchovа O.A., Slashchov І.M., Stadniychuk M.M. Substantiation of methods of geomechanical safety control in the mining enterprises

Details

Parent Category: Geo-Technical Mechanics, 2020

Category: Geo-Technical Mechanics, 2020, Issue 150

Geoteh. meh. 2020, 150, 176-187

https://doi.org/10.15407/geotm2020.150.176

 

SUBSTANTIATION OF METHODS OF GEOMECHANICAL SAFETY CONTROL IN THE MINING ENTERPRISES

¹Bulat A.F., ¹Slashchovа O.A., ¹Slashchov І.M., ¹Stadniychuk M.M.

¹Institute of Geotechnical Mechanics named by N. Poliakov of National Academy of Sciences of Ukraine

UDC 622.831.31 : 622.112.3

Language: Ukrainian

Annotation.

The article is devoted to the development of methods for monitoring geomechanical safety in the mining enterprises in terms of their use for determining risks of mine roadway stability loss and making timely decisions on the safety of mining operations. Purpose of the work was substantiation and systematization of the most effective methods for monitoring geomechanical safety in the mining enterprises. Hardware of the automated mine safety monitoring system just records parameters of components of the geotechnical system. However, this is not enough. First of all, well-proven methodologies are needed for interpreting the information received including reliable methods for monitoring of the rock massif state and rock pressure manifestations in mine workings, and well-founded criteria and risk assessment algorithms. Many of these methods are used little for economic reasons and absence of systemacy and consistency of their use. But the key reason is an impossibility to determine the necessary parameters and risks of mine roadway stability loss due to the diversity, complexity and poor predictability of the rock behavior under the influence of mining operations. Therefore, for predicting pre-emergency situations in geotechnical system caused by geomechanical factors, it is proposed to use a proved model of the Markov theory of random processes with discrete states and continuous time based on the linear system of the A.M. Kolmogorov differential equations. In order to apply the risk assessment model, the most effective reasonable methods for forecasting of the rocks stress-strain state and monitoring of mine workings are substantiated, which allow to adequately identify the input dominant parameters and improve the safety of mining technologies. Potential changes in risk indicators arising from waterlogging of rocks and affecting the mine roadway stability loss are identified. Dependencies are established, which determine the initial conditions for identifying waterlogged rock mass stability and contribute to the creation of technologies for roadway supporting.  A method is proposed for assessing supporting system or rock massif stability, which is distinguished by alternately identifying of interrelated and most variable risk factors by automated statistical processing of the amount of changes and the maximum rate of parameter change over time. Potential risks of emergency situations caused by factors affecting the mining enterprises safety are identified by parameters of periodic signals received from geomechanical object under the control.

Keywords:

safety control methods, identification of risk factors, mine roadway stability, geomechanical processes, mining operation safety.

References

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About the authors

Bulat Anatolii Fedorovych, Academician of the National Academy of Science of Ukraine, Doctor of Technical Sciences (D. Sc), Professor, Director of the Institute, Institute of Geotechnical Mechanics named by N. Poliakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Slashchov Ihor Mykolaiovych, Candidate of Technical Sciences (Ph.D), Senior Researcher, Senior Researcher in the Department of Mineral Mining at Great Depths, Institute of Geotechnical Mechanics named by N. Poliakov NAS of Ukraine (IGTM, NASU), Dnspro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Slashchovа Olena Anatoliivna, Candidate of Technical Sciences (Ph.D), Senior Researcher, Senior Researcher in the Department of Mineral Mining at Great Depths, Institute of Geotechnical Mechanics named by N. Poliakov NAS of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Stadniychuk Mykola Mykolaiovych, Master of Science, Chief Designer in Department of Mine Energy Complexes, Institute of Geotechnical Mechanics named by N. Poliakov NAS of Ukraine (IGTM, NAS of Ukraine), Dnіpro, This email address is being protected from spambots. You need JavaScript enabled to view it.

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