CAJ | 학술논문

为了研究防灭火注氮钻孔周围氮气运移规律，建立了钻孔周围氮气运移数学模型，在测试采空区氮气渗透率及氮气含量系数基础上采用MATLAB软件对注氮后钻孔周围氮气流动过程进行数值模拟，得到了钻孔周围氮气压力分布图。分析结果表明：氮气从注氮钻孔喷出以后呈喇叭形向采空区运移，形成了以钻孔为中心的近似圆形的影响半径，压力由内向外逐渐减小。数值模拟结果与实测结果相吻合，为防灭火注氮设备参数优化提供了理论依据。
위료연구방멸화주담찬공주위담기운이규률，건립료찬공주위담기운이수학모형，재측시채공구담기삼투솔급담기함량계수기출상채용MATLAB연건대주담후찬공주위담기류동과정진행수치모의，득도료찬공주위담기압력분포도。분석결과표명：담기종주담찬공분출이후정나팔형향채공구운이，형성료이찬공위중심적근사원형적영향반경，압력유내향외축점감소。수치모의결과여실측결과상문합，위방멸화주담설비삼수우화제공료이론의거。
In order to study the migration law around the nitrogen injection drilling for fire prevention ,the au‐thors have established a mathematical model of nitrogen migration to simulate the migration process of nitrogen around the nitrogen injection drilling by MATLAB software on the basis of testing nitrogen permeability and the content coefficient of nitrogen in the mine gob around the injection drilling and obtained the nitrogen pressure distribution figure ,which shows that nitrogen flows to the gob like a horn after spouting from the injection drill‐ing ,forming a sub-circular influence radius centering around the drilling with gradual pressure decrease from inside out .The numerical simulation results are coincided with the actual results ,which provide a theoretical ba‐sis for the parameter optimization of nitrogen injection equipment for fire prevention .