Zhao Yiming, Zhang Nong, Si Guangyao
Key Laboratory of Deep Coal Resource Mining of the Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221116, China.
Department of Earth Science and Engineering, Royal School of Mines, Imperial College, London SW7 2AZ, UK.
Sensors (Basel). 2016 Oct 21;16(10):1759. doi: 10.3390/s16101759.
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.
顶板活动监测是预防顶板垮塌事故的一项主要措施，其作用是优化和支撑地下煤矿巷道的设计。然而，传统的监测措施，如使用机械式引伸计或电子仪表，要么需要艰苦的井下作业，要么在恶劣的井下环境中无法正常工作。因此，为了突破这一技术障碍，本文开发了一种用于地下煤矿顶板安全控制的新型监测系统，该系统采用光纤布拉格光栅（FBG）材料作为传感元件和传输介质。与传统监测设备相比，所开发的新型监测系统具有能够对地下煤矿顶板活动进行准确、可靠和连续在线监测的优点。这有望进一步预防灾难性的顶板垮塌事故。该系统已在中国朱集煤矿的一条深部危险巷道中成功实施。研究现场的监测结果证明了基于FBG的传感器相对于传统监测方法的优势。新型巷道顶板活动与安全监测系统准确捕捉了工作面推进对顶板位移和应力的动态影响，为该矿井的巷道支护和设计提供了重要参考。
