Abstract
The article deals with the monitoring of the technical condition of the equipment of mine shaft lifting rigs that have been in operation for more than 50 years in rock movement zones. The analysis of the state of the profiles of the conductors of mine shafts with a long service life is performed. A solid model of barrel reinforcement and the results of calculations and distribution of stress concentration along the length of the shot are presented. The results of measuring the residual tiered wall thicknesses of the conductors and shots, as well as the residual values of the kinematic gaps in the track of the conductors between their working surfaces and the slip shoes of the vessel are presented. The results of measuring the dynamic parameters of the vessel-reinforcement systems under the conditions of active trunks are presented. The main provisions for the organization of a monitoring system for the equipment of mine shafts are developed.
Highlights
With long-term operation of hoisting systems in mine shafts with complex mining and geological conditions, the main task is to ensure the safety of their operation
Obtaining initial information about the conditions and factors that occur during the operation of shafts, making local assessments and identifying general laws of processes that affect safety of their operation, is performed based on the analysis of existing materials accumulated during the previous comprehensive surveys, instrumental surveys, and special performed measures that form the initial information base
The aims of the work are: - analysis of stem conductor system profiles operating under difficult conditions in rock movement zones; - development of a solid-state model of barrel reinforcement and stress concentration calculations along the length of the execution; - assessment of the measurement results of the kinematic and dynamic parameters of the vessel-reinforcement systems under the conditions of active trunks; - development of the main provisions for the organization of a monitoring system for mine shaft equipment; - predictive assessment of the effectiveness of the implementation of a monitoring system for mining equipment
Summary
With long-term operation of hoisting systems in mine shafts with complex mining and geological conditions, the main task is to ensure the safety of their operation. This is accomplished through organization of a complex system of measures, which is based on obtaining the most complete and objective information about the actual parameters of operating equipment, predictive calculation of their possible change in a direction of increasing the risk of an accident [1]. As a result of analytical and assessment-based constructions, a conceptual assessment of functioning of a hoist complex maintenance system and a level of risks during the shaft operation under given technological conditions are performed. The survey is performed in a complex with a detailed analysis of a workload of the hoisting complex using a specially developed methodological support and technical means [2 - 4]
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