煤田地质与勘探2024，Vol.52Issue(11)：12-23,12.DOI:10.12363/issn.1001-1986.24.03.0190
自燃煤矸石山火区表面温度场三维重构与实践
3D reconstruction of surface temperature field in spontaneous combustion coal gangue dump fire area and its practice
摘要
Abstract
[Objective]The spontaneous combustion of coal gangue dumps has severely damaged the ecological environ-ment and affected the production safety,which has become a bottleneck in the process of ecological civilization con-struction in China.In order to formulate a fire extinguishing plan and implement a fire extinguishing project,it is very important to accurately detect the fire area of the spontaneous combustion coal gangue dump.[Methods]Herein,the idea of detecting the three-dimensional distribution of high-temperature areas using unmanned aerial vehicle(UAV)based thermal infrared oblique photogrammetry technology was proposed.Meanwhile,the multi-scale Gaussian filter-ing detail enhancement technology for thermal infrared image was developed to highlight the target edge information.Besides,the one-click batch processing software for thermal infrared images was created based on the FLIR Tools Soft-ware development kit(SDK),and the multithread asynchronous processing of thermal infrared images was efficiently carried out using ThreadPool,thereby realizing the global unification of the corresponding relationship between the col-or and temperature value of all thermal infrared images.Finally,the surface temperature field of fire area of the spontan-eous combustion coal gangue dump was three-dimensionally reconstructed based on a batch of processed thermal in-frared images.This method was also applied on the site of a burning coal gangue dump in Shaanxi Province.[Results and Conclusions]The key findings indicate that:(1)Through multi-scale Gaussian filtering detail enhancement,the de-tail features of the colorful thermal infrared images are significantly enhanced,and the information entropy of thermal infrared images increases from 6.989 to 7.624.(2)The developed batch processing software of thermal infrared image could quickly process 1 000 thermal infrared images within 10 minutes,greatly improving the work efficiency.(3)The above technology has been applied to successfully construct the three-dimensional surface temperature fields for two zones in a coal gangue dump fire area in Shaanxi,delineating the high-temperature areas of 11 693 m2 and 10 800 m2,re-spectively,which provides support to the assessment of the fire development trend and the creation of subsequent fire extinguishing plans.The research results could be directly applied to the three-dimensional reconstruction of temperat-ure fields in high-temperature scenarios such as coal gangue dump fires,coal fires,landfill fires,forest fires,and build-ing fires,providing comprehensive fire data support for fire investigation and fire source locating.关键词
煤矸石山/自燃/无人机/三维重构/温度场/火区探测Key words
coal gangue dump/spontaneous combustion/unmanned aerial vehicle(UAV)/3D reconstruction/temperat-ure field/detection of fire area分类
矿业与冶金引用本文复制引用
邵振鲁,张会松,邓榕,杨彤,马东..自燃煤矸石山火区表面温度场三维重构与实践[J].煤田地质与勘探,2024,52(11):12-23,12.基金项目
国家自然科学基金项目(52274236) （52274236）
新疆维吾尔自治区重点研发任务专项项目(2022B03003-2) （2022B03003-2）
中国博士后科学基金项目(2023M733765) （2023M733765）
