Reliability analysis has a very important role in supporting the operation of a system in harsh working conditions such as mines. Haul trucks are considering as a main asset of an open pit mine. Dump trucks are comprised of different sub-systems and among them, tires have a significant effect on the haulage economy. This study focused on the remaining life estimation of the mining truck tires considering the environmental operating conditions at an open pit iron ore mine in Iran. To achieve this, the proportional hazard model was used to estimate the conditional reliability functions and then the mean residual life of tires at the various initial survival times. The results of this study show that the ambient temperature has a significant effect on the reliability performance. By increasing the initial life of tires from 500 to 1000 h, the mean residual life will be decreased by 21% and 30% in low (below 15°C) and high (above 15°C) ambient temperature levels. These results are helpful to keep the truck tire performance at a desirable level by considering the appropriate preventive maintenance intervals.

可靠性分析对于支持系统在矿山等恶劣工作条件下的运行具有非常重要的作用。运输卡车正在考虑作为露天矿的主要资产。自卸车由不同的子系统组成，其中轮胎对运输经济性有显着影响。本研究的重点是考虑伊朗露天铁矿的环境运行条件，对矿用卡车轮胎的剩余寿命进行估算。为了实现这一点，比例风险模型用于估计条件可靠性函数，然后是轮胎在各种初始生存时间的平均剩余寿命。本研究结果表明，环境温度对可靠性性能有显着影响。通过将轮胎的初始寿命从 500 小时增加到 1000 小时，在低（低于 15°C）和高（高于 15°C）环境温度水平下，平均剩余寿命将分别减少 21% 和 30%。通过考虑适当的预防性维护间隔，这些结果有助于将卡车轮胎的性能保持在理想水平。