CAJ | 학술논문

煤层瓦斯参数的变化规律对矿井瓦斯灾害防治具有重要的指导意义。利用理论推导和数值模拟的方法对瓦斯涌出初速度、工作面前方的支承应力、瓦斯涌出量、煤层透气性系数等参数进行了分析研究，发现这些指标具有相似的或相反的变化规律，它们是关于距离x或者时间t的S型曲线和倒S型曲线的组合。透气性系数关于距离的曲线形式和瓦斯压力、支承应力关于距离的曲线形式具有不很严格的对称性。结合具体矿井的条件即可确定出参数的变化规律，从而为矿井瓦斯灾害防治提供有效的理论指导。
매층와사삼수적변화규률대광정와사재해방치구유중요적지도의의。이용이론추도화수치모의적방법대와사용출초속도、공작면전방적지승응력、와사용출량、매층투기성계수등삼수진행료분석연구，발현저사지표구유상사적혹상반적변화규률，타문시관우거리x혹자시간t적S형곡선화도S형곡선적조합。투기성계수관우거리적곡선형식화와사압력、지승응력관우거리적곡선형식구유불흔엄격적대칭성。결합구체광정적조건즉가학정출삼수적변화규률，종이위광정와사재해방치제공유효적이론지도。
Gas parameters variation has significant influence on the gas disaster prevention in coal mines. In this paper, the initial velocity of gas emission, abutment pressure ahead of the face, gas emis-sion and permeability coefficient in coal seam, et al, were analyzed by the theoretical analysis and nu-merical simulation. The results show that there are similar or opposite variation regularity among these parameters, which are the combinations of S-shaped curve and inverted S-shaped curve associated to the distance x or time t. Meanwhile, permeability coefficient curve with distance, as well as gas pressure and abutment pressure with distance, all present not exactly symmetrical characteristics. Thus, the varia-tion regularity of parameters can be ascertained with specific coal mine conditions. The research results can provide theoretical guidance to the prevention and control of gas disaster in coal mines.