Improvement of the classification of causes for the decommissioning of large-size tires

The article presents the results of the analysis of the causes of failure of large-size tyres operated in the conditions of Navoi MMC. On the basis of generalisation of the accumulated data the classification of the main factors leading to tyre failure is proposed. All causes are grouped into three key categories: wear, mechanical damage and thermal damage. Wear includes the processes of natural and accelerated tread abrasion, as well as various forms of uneven wear arising from deviations from the recommended operating conditions. Mechanical damage is considered as a result of short-term or long-term external impacts, including punctures, cuts, cord breaks and frame deformations. In 2024, the plant used more than 19 thousand car tires with a total value of about 1.4 trillion soums. These quarry dump trucks use tires manufactured by Bridgestone, Goodyear, Luan, Michelin, Techking, Advance, Aeolus, Maxam and Noble. For transport enterprises, the task of rational use of tire resources by improving the condition of quarry roads and reducing premature tire failure is relevant. The results obtained can be used to improve tyre maintenance and condition monitoring systems at mining enterprises.