煤矿安全2019，Vol.50Issue(1)：75-78,83,5.DOI:10.13347/j.cnki.mkaq.2019.01.018
易自燃特厚煤层综放开采防灭火体系
Fire Prevention and Extinguishing System of Fully－mechanized Coal Caving in Special Thick Coal Seam
摘要
Abstract
In view of the characteristics of special thickness of coal seam, easy spontaneous combustion, high gangue content and roof breakage in No.3 and No.5 merged zone of Madaotou Coal Mine, the main causes of easy spontaneous combustion of coal in fully-mechanized coal caving process were analyzed and determined, such as serious coal loss in goaf area, large air leakage at the end head, long time in the initial mining preparation period and retracement period. Based on the experimental study on 8209 fully-mechanized caving face, a forecasting and prediction system which is dominated by beam tube monitoring and supplemented by mine safety monitoring system and artificial detection is established. According to the characteristics of different mining periods, the system of control of nitrogen injection, blocking agent spraying, sealing end and yellow mud filling was formed. Application effect showed that the face did not appear abnormal phenomenon during mining, the goaf temperature was below 27 ℃, CO gas composition was within the normal range, C2H4 and C2H6 gas never appeared. The accuracy and efficiency of comprehensive fire prevention system based on prediction and guaranteed by prevention and control were verified.关键词
合层区/自然发火/综放开采/防灭火/采空区遗煤Key words
merged zone/spontaneous combustion/fully mechanized caving mining/fire prevention and extinguishing/residual coal in goaf分类
矿业与冶金引用本文复制引用
苏伟伟..易自燃特厚煤层综放开采防灭火体系[J].煤矿安全,2019,50(1):75-78,83,5.基金项目
陕西省工业科技攻关资助项目(2016GY-161) （2016GY-161）
中煤科工集团西安研究院有限公司重点资助项目(2015XAYZD016) （2015XAYZD016）
