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A Fiber Bragg Grating-Based Monitoring System for Roof Safety Control in Underground Coal Mining

机译：基于光纤光栅的地下煤矿顶板安全控制监控系统

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摘要

Monitoring of roof activity is a primary measure adopted in the prevention of roof collapse accidents and functions to optimize and support the design of roadways in underground coalmines. However, traditional monitoring measures, such as using mechanical extensometers or electronic gauges, either require arduous underground labor or cannot function properly in the harsh underground environment. Therefore, in this paper, in order to break through this technological barrier, a novel monitoring system for roof safety control in underground coal mining, using fiber Bragg grating (FBG) material as a perceived element and transmission medium, has been developed. Compared with traditional monitoring equipment, the developed, novel monitoring system has the advantages of providing accurate, reliable, and continuous online monitoring of roof activities in underground coal mining. This is expected to further enable the prevention of catastrophic roof collapse accidents. The system has been successfully implemented at a deep hazardous roadway in Zhuji Coal Mine, China. Monitoring results from the study site have demonstrated the advantages of FBG-based sensors over traditional monitoring approaches. The dynamic impacts of progressive face advance on roof displacement and stress have been accurately captured by the novel roadway roof activity and safety monitoring system, which provided essential references for roadway support and design of the mine.
机译：监测顶板活动是预防顶板坍塌事故的主要措施，具有优化和支持地下煤矿巷道设计的功能。但是，传统的监控措施（例如使用机械引伸计或电子压力计）要么需要繁重的地下工作，要么无法在恶劣的地下环境中正常工作。因此，在本文中，为了突破这一技术障碍，开发了一种新型的地下煤矿采掘安全控制监控系统，该系统使用光纤布拉格光栅（FBG）材料作为感知元件和传输介质。与传统的监测设备相比，开发的新颖的监测系统具有提供准确，可靠和连续的地下煤矿顶板活动在线监测的优势。预计这将进一步防止灾难性屋顶倒塌事故的发生。该系统已在中国诸暨煤矿的深层危险巷道成功实施。研究现场的监测结果证明了基于FBG的传感器比传统监测方法的优势。新颖的巷道顶板活动和安全监控系统已经准确地捕获了渐进工作面对顶板位移和应力的动态影响，该系统为矿井巷道的支持和设计提供了重要参考。

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