某矿井提升机主轴断裂事故分析

The Fault Analysis of the Backbone Fracture on Mine Hoist

通过对某矿井提升机主轴的断裂事故的分析,建立了主轴表面裂纹的力学模型,探讨了主轴表面裂纹的断裂情况;导出了主轴断裂时的断裂条件以及裂纹扩展时极限尺寸的计算公式。

Through analyzing the backbone fracture to the mine hoist,build the mechanics model of backbone containing face crackle,inquire into the fracture situation of the backbone containing face crackle and obtain the fracture condition of the backbone while breaking as well as the calculating formulas of extreme size on crackle spread.