Two-dimensional inverse problem of fire location in the closed goaf of coal mine based on optical fiber sensors.

ABSTRACT: Monitoring the temperature to determine the fire source locations is essential for controlling the spontaneous combustion in the goaf. Optical fiber sensors are employed to measure the temperature distribution in the goaf. However, due to changes in the geological conditions and the influence of the falling rocks in the goaf, only sensors on the upper side of the uncompacted goaf, due to inclination and coal pillar, may remain. Unilateral sensors are located on the upper side of the goaf, while fire occurs in the center. To investigate the issue with linear unilateral sensors, a two-dimensional inverse method has been developed to determine the location of fire sources by considering heat transfer after a fire inside the goaf. The equations were theoretically solved using Green's function

SUBMITTER: Liu Y 

PROVIDER: S-EPMC10898756 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature