U型钢可缩性支架在地下矿山的应用已十分广泛,对于松软破碎地段矿岩的支护工作,取得了较好的效果。但对U型钢可缩性支架拱形参数理论上计算,还没有详细的论述,只是在岳翰等同志所著《巷道布置及其稳定性》一书中列出了一些参数,但没有计算公式。在生产现场应用中,往往是用照套缩放或是试凑等办法来制作,这样很不方便,并有一定的误差。为此笔者根据自己的工作实践,推导出U型钢拱形可缩性支架拱形参数计算的通用公式,供工程技术人员参考。1 U型钢可缩性支架的拱形参数 U-shaped steel retractable brackets have been widely used in underground mines and have achieved good results for the support work of soft rock and soft crushed rock. However, the theoretical calculation of the arched parameters of the U-shaped steel scaffolding has not been discussed in detail yet, but some parameters are listed in the book “Roadway Arrangement and Stability” by Comrade Yuehan et al., But there is no formula . In the production site applications, it is often used Zhaozhao zoom or trial and other methods to make, so very inconvenient, and there is a certain error. To this end, according to my own work practices, the author derives a general formula for calculating the arched parameters of U-shaped steel arch collapsible support for engineering and technical personnel. 1 U-shaped steel retractable bracket arch parameters