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本文针对煤矿主井井架强度的安全可靠性这一关键问题，提出用随机有限元法对其进行可靠性分析，克服了用传统方法分析所带来的不足。在计算中采用自编部分程序与通用的ＳＡＰ５程序相结合的方法，减小了自编程序的工作量。
In this paper, according to the key issue of the safety and reliability of the main shaft derrick in coal mines, the reliability analysis of the main shaft derrick with random finite element method is proposed to overcome the shortcomings caused by the traditional method. In the calculation of self-compiled part of the program with the common SAP5 program combined with the method to reduce the workload of self-programming.