The utility model greatly increases the work efficiency and lowers the safety hidden trouble to the lowest degree.

本实用新型大大提升了工作效率，且将安全隐患降低到最小的程度。

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Analysis of safety hidden trouble in subway construction this paper, find out the main ways to strengthen the management of the subway construction site.

本文分析地铁施工中的安全隐患，从中找出加强地铁施工现场管理的主要途径。

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Safety hidden trouble and main harm brought by mined-out areas are analyzed, and main methods and means used in detecting mined-out areas currently are summarized.

分析了采空区带来的安全隐患和主要危害，总结了当前采空区探测中使用的主要方法和手段。

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