攀枝花宝鼎煤田露头大面积火区探测成果分析

Analysis of Detection Results of Large-area Fire Area in Outcrop of Baoding Coalfield in Panzhihua

科学分析煤田露头火区燃烧界限,准确判断其影响范围和危害程度,有利于提出有效的治理措施。攀枝花市运用高分遥感、无人机航测等先进技术手段和设备,对宝鼎煤田大面积火区开展了详实的探测,探测出39个火区点位的燃烧状况,形成44.85 km^(2)的光学影像、10.30 km^(2)的热红外影像图和250 km^(2)的遥感影像图,圈定露头火区面积为17.43万m^(2),划定影响范围面积为1285.19万m^(2)。根据探测结果,分析了火区特点、变迁原因及危害,提出按照“分级防治、逐步推进、综合管控”的原则,采取火情监测、火源探测、注水降温、注浆灭火、高温区煤体剥离、黄土覆盖等综合防治措施,推进火区治理进度,为宝鼎煤田露头大面积火区治理提供了基础资料和决策依据。

Scientific analysis of the combustion boundary of coal outcrop fire area and accurate judgment of its influence range and harm degree are conducive to putting forward effective control measures.Panzhihua City used advanced technical means and equipment such as high-resolution remote sensing and UAV aerial survey to carry out detailed detection of large-area fire areas in Baoding Coalfield.The combustion conditions of 39 fire areas were detected,and 44.85 km^(2)optical images,10.30 km^(2)thermal infrared images and 250 km^(2)remote sensing images were formed.The area of outcrop fire area was delineated to be174,300 m^(2),and the area of influence area was delineated to be 12,851,900 m^(2).According to the detection results,the characteristics,causes and hazards of the fire area were analyzed,and the principle of"graded prevention,gradual promotion and comprehensive control"was proposed.Comprehensive prevention and control measures such as fire monitoring,fire source detection,water injection cooling,grouting fire extinguishing,coal stripping in high temperature area and loess coverage are adopted to promote the progress of fire area control,which provides basic data and decision-making basis for large-area fire area control in outcrop of Baoding Coalfield.