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介绍了顶板离层指示仪的结构、安装及监测，通过对数据整理分析，判定锚杆支护参数的合理性，从而指导锚杆支护设计并保证巷道施工安全。
The structure, installation and monitoring of roof separation indicator are introduced. By analyzing and analyzing the data, the rationality of bolt support parameters is determined, so as to guide the design of bolt support and ensure the construction safety of roadway.