超深矿井多层缠绕提升钢丝绳振动磨损危险识别及脂润滑减磨行为研究

本项目针对超深矿井多层缠绕提升钢丝绳磨损严重、润滑脂易劣化导致其服役寿命低的问题，以缠绕提升钢丝绳摩擦副和润滑脂为研究对象，将提升动力学、摩檫学、危险、润滑等理论相结合，开展超深矿井多层缠绕提升钢丝绳振动磨损危险识别及脂润滑减磨行为研究。首先，探究钢丝绳层间-圈间冲击振动、中间层钢丝绳挤压微动以及悬-垂绳横-纵振动磨损机理；接着，构建层间、股间、股内磨损钢丝螺旋局部损伤接触力学模型，解析复合振动下多丝螺旋接触磨损损伤特性；然后，提出将危险和可靠性理论引入钢丝绳磨损状态识别，实现振动磨损钢丝绳剩余寿命预测和多级危险识别，减少其定期更换导致的浪费；最后，优选适应于超深矿井严苛环境的石墨烯改性减磨润滑脂，降低钢丝绳振动磨损。研究成果将突破超深矿井多层缠绕提升钢丝绳振动磨损和脂润滑改性研究的前沿问题，延长钢丝绳服役寿命，为深部矿产资源多层缠绕提升设计和保障矿井提升安全提供重要基础数据和理论支撑。

Aiming at low service life caused by the severe wear and grease deterioration of multi-layer winding hoist wire rope in an ultra-deep coal mine, the friction pairs of the winding hoist wire rope and grease are taken as the research objects. The hoisting dynamics, tribology, danger and lubrication theories are combined to carry out the study on hazard identification of vibration wear and anti-wear behavior of grease for multi-layer winding hoist wire rope in an ultra-deep mine. Firstly, the wear mechanisms of the rope under impact vibration of the interlayer transition, the squeeze fretting wear of the middle layer and the transverse vibration of the suspension-vertical ropes are explored. Then, the damage contact mechanics model of localized wear helical wires between the strands, interlayer and the internal wires in a strand is established. Additionally, the wear damage characteristics of the multi-wire spiral contact under compound vibration conditions are analyzed. Furthermore, the danger and reliability theories are introduced to the identification of wear status of wire rope. The residual life prediction and multi-level danger identification for the vibration wear wire rope are realized and the wire rope waste resulted by regularly replacement would be reduced. Finally, to reduce the vibrating wear of wire rope, the graphene modified anti-wear grease which is suitable for severe environment in ultra-deep coal mine is optimized. This research results will break the frontier foundation problems of vibration wear and grease modification for the multi-layer winding hoist wire rope in an ultra-deep coal mine and prolong its service life. Moreover, this study will also provide significant basic data and theoretical support for the design of the deep mineral resources multi-layer winding hoist system and the safety of mining hoist.