Research in Optical Fiber Sensing Technology Fire Based on Goaf of Lao-Shidan Mine

5th Annual International Workshop on Materials Science and Engineering

Cheng, Genyin^1 ; Ren, Qiang^1 ; Qi, Liming^1 ; Xu, Huijun^2 ; Zhou, Yong^3

College of Safety Engineering (Center), North China Institute of Science and Technology, Yanjiao, Beijing

065201, China^1

Ministry of Science and Technology National Energy Group, Dongcheng District, Beijing

100000, China^2

Wuhai Energy Company of National Energy Group, Wuhai city, Inner Mongolia Autonomous Region

016062, China^3

关键词: Calculated values;    Concentration fields;    Fire prevention;    Optical fiber sensing;    Optical fiber sensing technology;    Oxygen concentrations;    Velocity field;    Working space;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/585/1/012100/pdf
DOI  :  10.1088/1757-899X/585/1/012100

来源: IOP

【 摘 要 】

In order to prevent the spontaneous combustion of the coal in the goaf of the 16401 working space of the Lao-Shidan coalmine, the optical flow sensing system, the oxygen concentration distribution and the temperature distribution of the goaf are detected in real time by using the optical fiber sensing system pre-buried in the channel. According to the preset mathematical model of CFD software, the velocity field cloud map, O2 concentration field cloud map and temperature field cloud map are constructed, and the consistency between the calculated value and the measured ones is established by the model to determine the accurate range of the "three belts" in the goaf of 16401 working space. The distance from 0 to 54m is the heat dissipation zone, 54m∼88m is the oxidizing spontaneous combustion zone, and the suffocation zone is more than 88m. The measured data provides a solid theoretical basis for the feasibility of fire prevention measures in the goaf of the 16401 working space in the Lao-Shidan coalmine.