本文用平面计算,空间电算和现场实测三种方法全面系统地重新校验与分析了使用18余年的杨庄煤矿主井井架。结果证明,以往用平面理论计算法设计的钢井架,若用电算法和实测应力法校验其强度,井架还有一定的承载潜力可供利用。根据理论计算和现场实测结果,经补强加固后的钢井架,可提高其承载能力,满足增大提升容器的需要;为保证矿井安全,稳产和增产,提高矿井经济效益创造条件。 In this paper, three methods of plane calculation, space calculation and field measurement are used to recheck and analyze the main shaft derrick of Yangzhuang Coal Mine, which has been used for more than 18 years. The results show that, in the past, the steel derrick designed by plane theory calculation method has some bearing capacity to be used if it is verified by electrical calculation and measured stress method. According to theoretical calculation and field measurement results, the steel derrick strengthened by reinforcement can increase its bearing capacity and meet the need of increasing and enhancing the container; create conditions for ensuring mine safety, stable production and increasing production, and increasing mine economic benefits.