大佛寺煤矿40108综采工作面瓦斯涌出规律及影响因素分析  

Analysis of Gas Emission Law and Its Influencing Factors at 40108 Fully-mechanized Working Face in Dafosi Coal Mine

作　　者：原德胜 陈跟马[3] 李子文 张进军[3] 李庆钊 

机构地区：[1]陕西彬长矿业集团有限公司,陕西咸阳721000 [2]中国矿业大学安全工程学院,江苏徐州221116 [3]陕西彬长大佛寺矿业有限公司,陕西咸阳721000

出　　处：《煤矿安全》2014年第5期155-158,共4页Safety in Coal Mines

摘　　要：为了合理地确定高抽巷的布置和抽采参数，通过束管监测，研究了40108综采工作面和采空区瓦斯浓度分布规律以及影响工作面瓦斯涌出的关键因素。研究结果表明：工作面沿倾向从进风巷到回风巷瓦斯浓度逐渐增大，采空区距工作面33～38m范围内，瓦斯浓度逐渐增大到5％，到采空区深部，瓦斯浓度趋于稳定。综采工作面绝对瓦斯涌出量随产量和推进速度的增加而增大，而当工作面推进速度超过一定值时，有所下降；相对瓦斯涌出量随着产量和推进速度的增大而呈负指数规律衰减。In order to determine the arrangement and extraction parameters of the high drainage roadway reasonably, through the beam tube monitoring, the distribution law of gas concentration of the working face and goal and the key factors influencing the working face gas emission were studied. The results show that gas concentration increases gradually from the intake airway to the return airway along the tendency of the working face. Within the scope that the goal is apart from the working face of 33 to 38 m, gas concentration gradually increases to 5%. Deep into the goaf, gas concentration tends to be stable. With the increase of output and advancing speed, the absolute gas emission quantity of fully - mechanized working face increases. However, when the advancing speed exceeds a certain value, it falls. The relative gas emission quantity decays under the law of negative exponent with the increase of output and advancing speed.

关 键 词：瓦斯涌出规律 采空区 绝对瓦斯涌出量 相对瓦斯涌出量 高抽巷 

分 类 号：TD712[矿业工程—矿井通风与安全]