№70-04
Methodology for designing multiparameter processes for control of the stress-strain state of a rock mass
A. Khorolskyi1, A. Kosenko1, I. Chobotko1
1Branch for Physics of Mining Processes of the M.S. Poliakov Institute of Geotechnical Mechanics the National Academy Sciences of Ukraine, Dnipro, Ukraine
Coll.res.pap.nat.min.univ. 2022, 70:46-56
https://doi.org/10.33271/crpnmu/70.046
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ABSTRACT
Purpose. To develop a new approach to the design of multi-parameter processes for controlling the stress-strain state of a rock mass based on the use of a decomposition approach and optimization algorithms.
Methodology. To solve the problem, a complex method was applied, which consists in formalizing alternative technological solutions for managing the stress-strain state of a rock mass by converting it into network models. Further application of optimization algorithms on network models and graphs makes it possible to choose the most optimal technology for the construction or operation of mine workings.
Findings. A methodological approach to the design of processes for managing the stress-strain state of a rock mass has been developed. For this, a decomposition approach was used as a decision-making tool, which made it possible to take into account the variety of parameters that affect the efficiency of the construction or operation of mine workings. After selecting decision-making tools, a criterion was proposed for evaluating the effectiveness of construction or operation of mine workings, taking into account the probabilistic reliability and costs of construction or operation. To design multi-parameter processes for controlling the stress-strain state, technological cycles for the construction and operation of mine workings support were studied using alternative technologies and materials, which made it possible to identify common stages and proceed to the formalization of the problem of finding the optimal technology. The formalization procedure provided for the presentation of alternative technologies and solutions in the form of a network model. Further application of optimization algorithms made it possible to determine the most optimal type of fastening from the standpoint of minimizing the optimization parameter.
Originality. An algorithmic procedure for the process of designing multi-parameter processes for controlling the stress-strain state of a rock mass based on the use of a decomposition approach has been developed and presented, which made it possible to take into account the diversity in nature and degree of influence of parameters, as well as to determine the most optimal methods for constructing or operating mine workings.
Practical implications. The criteria for the effectiveness of the process of construction or operation of mine workings are determined, which made it possible to proceed to the generalization of the technological stages of construction and operation of mine workings, regardless of the type of support. Based on the use of optimization algorithms on networks and graphs, a decision support system was created that allows automating the design process, as well as determining the most optimal technology for the construction and operation of mine workings, depending on a given optimization parameter.
Keywords: rock mass, design, parameter, technology, operation, mine working, goaf, software.
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