CAJ | 학술논문

针对淮北青东煤矿突出煤层群上保护层开采过程中下覆被保护厚煤层综放工作面采空区自然发火防治问题，理论分析了下覆被保护厚煤层综放工作面采空区漏风特征，在828工作面沿采空区两顺槽布点，对采空区温度及多组气体浓度进行测定，确定该工作面采空区自燃“三带”的范围，根据测试结果分析了推进速度、注氮工艺对采空区自然发火规律的影响，为防治该类条件下煤炭自燃提供科学依据，保证了工作面的安全回采。
침대회북청동매광돌출매층군상보호층개채과정중하복피보호후매층종방공작면채공구자연발화방치문제，이론분석료하복피보호후매층종방공작면채공구루풍특정，재828공작면연채공구량순조포점，대채공구온도급다조기체농도진행측정，학정해공작면채공구자연“삼대”적범위，근거측시결과분석료추진속도、주담공예대채공구자연발화규률적영향，위방치해류조건하매탄자연제공과학의거，보증료공작면적안전회채。
Due to possible spontaneous combustion hazard during coal exploitation process, performed a series of experiments in Qingdong colliery. To be more specific, identified the air leakage pattern of mined-out areas. And built up 4 measure station along the tunnels of No. 825 Working Face to monitor the temperature and gas concentration of mined-out areas. After analyzing relevant data, we figured out the best exploitation speed and how nitrogen injection affects coal spontaneous combustion in mined-out areas. Finally, concluded the best parameters for main fire-fighting technologies in working face to ensure a safe exploitation process.