Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Research on transparency of coal mine geological conditions based on distributed fiber‐optic sensing technology
AbstractCoal mining induces changes in the nature of rock and soil bodies, as well as hydrogeological conditions, which can easily trigger the occurrence of geological disasters such as water inrush, movement of the coal seam roof and floor, and rock burst. Transparency in coal mine geological conditions provides technical support for intelligent coal mining and geological disaster prevention. In this sense, it is of great significance to address the requirements for informatizing coal mine geological conditions, dynamically adjust sensing parameters, and accurately identify disaster characteristics so as to prevent and control coal mine geological disasters. This paper examines the various action fields associated with geological disasters in mining faces and scrutinizes the types and sensing parameters of geological disasters resulting from coal seam mining. On this basis, it summarizes a distributed fiber‐optic sensing technology framework for transparent geology in coal mines. Combined with the multi‐field monitoring characteristics of the strain field, the temperature field, and the vibration field of distributed optical fiber sensing technology, parameters such as the strain increment ratio, the aquifer temperature gradient, and the acoustic wave amplitude are extracted as eigenvalues for identifying rock breaking, aquifer water level, and water cut range, and a multi‐field sensing method is established for identifying the characteristics of mining‐induced rock mass disasters. The development direction of transparent geology based on optical fiber sensing technology is proposed in terms of the aspects of sensing optical fiber structure for large deformation monitoring, identification accuracy of optical fiber acoustic signals, multi‐parameter monitoring, and early warning methods.
Highlights The technical support for intelligent coal mine mining and prevention of geological disasters is provided by transparency of coal mine geological conditions. Recent advancements in distributed optical fiber sensing technology have yielded significant benefits in the informatization of coal mine geological conditions, the dynamic of sensing parameters, and the precision of disaster characteristics. These technologies include real‐time, distributed, multi‐parameter, and long‐distance monitoring. In China, it has gained popularity and been used in the field of coal mine safety monitoring. This study, which focuses on geological hazards associated with coal mines, analyzes the types and sensing parameters of geological hazards caused by coal seam mining, summarizes the action fields related to these hazards in mining, and discusses the multi‐field sensing method of disaster characteristics associated with mining rock mass in conjunction with multi‐field sensing of the temperature field, the vibration field, the strain field, and other fields of distributed fiber sensing technology. The architecture of distributed optical fiber sensing technology in transparent geological support of coal mines is presented, along with the potential for significant rock strata deformation, accurate vibration identification, multi‐parameter monitoring, and early warning systems.
Research on transparency of coal mine geological conditions based on distributed fiber‐optic sensing technology
AbstractCoal mining induces changes in the nature of rock and soil bodies, as well as hydrogeological conditions, which can easily trigger the occurrence of geological disasters such as water inrush, movement of the coal seam roof and floor, and rock burst. Transparency in coal mine geological conditions provides technical support for intelligent coal mining and geological disaster prevention. In this sense, it is of great significance to address the requirements for informatizing coal mine geological conditions, dynamically adjust sensing parameters, and accurately identify disaster characteristics so as to prevent and control coal mine geological disasters. This paper examines the various action fields associated with geological disasters in mining faces and scrutinizes the types and sensing parameters of geological disasters resulting from coal seam mining. On this basis, it summarizes a distributed fiber‐optic sensing technology framework for transparent geology in coal mines. Combined with the multi‐field monitoring characteristics of the strain field, the temperature field, and the vibration field of distributed optical fiber sensing technology, parameters such as the strain increment ratio, the aquifer temperature gradient, and the acoustic wave amplitude are extracted as eigenvalues for identifying rock breaking, aquifer water level, and water cut range, and a multi‐field sensing method is established for identifying the characteristics of mining‐induced rock mass disasters. The development direction of transparent geology based on optical fiber sensing technology is proposed in terms of the aspects of sensing optical fiber structure for large deformation monitoring, identification accuracy of optical fiber acoustic signals, multi‐parameter monitoring, and early warning methods.
Highlights The technical support for intelligent coal mine mining and prevention of geological disasters is provided by transparency of coal mine geological conditions. Recent advancements in distributed optical fiber sensing technology have yielded significant benefits in the informatization of coal mine geological conditions, the dynamic of sensing parameters, and the precision of disaster characteristics. These technologies include real‐time, distributed, multi‐parameter, and long‐distance monitoring. In China, it has gained popularity and been used in the field of coal mine safety monitoring. This study, which focuses on geological hazards associated with coal mines, analyzes the types and sensing parameters of geological hazards caused by coal seam mining, summarizes the action fields related to these hazards in mining, and discusses the multi‐field sensing method of disaster characteristics associated with mining rock mass in conjunction with multi‐field sensing of the temperature field, the vibration field, the strain field, and other fields of distributed fiber sensing technology. The architecture of distributed optical fiber sensing technology in transparent geological support of coal mines is presented, along with the potential for significant rock strata deformation, accurate vibration identification, multi‐parameter monitoring, and early warning systems.
Research on transparency of coal mine geological conditions based on distributed fiber‐optic sensing technology
Deep Underground Science and Engineering
Piao, Chunde (Autor:in) / Yin, Yanzhu (Autor:in) / He, Zhihao (Autor:in) / Du, Wenchi (Autor:in) / Wei, Guangqing (Autor:in)
01.12.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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