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介绍了山东岱庄生建煤矿矿主井井架强度检验的过程、方法。阐述了应变电测原理及计算机数据采集系统的组成。通过对测试结果的分析，提供了可靠的井架加固方法，使矿井顺利恢复双层双车提升。
The process and method of testing the strength of main derrick of Daizheng coal mine in Shandong are introduced. The principle of strain gauge and the composition of computer data acquisition system are expounded. Through the analysis of the test results, a reliable derrick reinforcement method is provided, which enables the mine to resume double-deck and two-car lift smoothly.