下行通风瓦斯运移规律及瓦斯抽放技术研究  

Study on Gas Migration Rule and Gas Drainage Technology on Coal Face with Downward Ventilation

作　　者：赵楠[1] 李增华[1] 杨永良[1] 杨玉静[1] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221008

出　　处：《煤炭技术》2012年第2期84-86,共3页Coal Technology

摘　　要：采用RFPA2D数值模拟软件对东庞矿21101工作面煤层顶板冒落规律及裂隙特性进行了数值模拟,利用模拟结果分析采空区顶板产生裂隙、断裂、冒落和离层情况及其变化规律。采用Fluent数值模拟软件对下行通风工作面采空区瓦斯运移及分布规律进行了模拟研究。在此基础上对21101工作面高位钻孔参数进行了优化设计,并对抽放效果进行了考察分析。验证了下行通风工作面瓦斯运移规律研究的准确性及高位钻孔设计的合理性。With the RFPA^2D numerical simulation software, the falling law of overlying rock of coal seam and the characters of fractions from it in the downward ventilation working face, 21101 working face of Dongpang Coal Mine are numerically simulated, and the result of which is used for analyzing the situation and the change disciplinarian of the cranny, break, falling and the abscission layer of the roof. Using the Fluent numerical simulation software,the disciplinarian of gas moving and distribution in mine gob on the downward ventilation working face is simulated. On the basic of the above research, the parameters of high level drillings of the 21101 working face in Dongpang Coal Mine with downward ventilation are optimally designed, and the effect of gas drainage is analysed. It validated the veracity of the investigation of the gas moving law of the downward ventilation working face and the rationality of the high level drillings＂ design.

关 键 词：煤层顶板冒落规律 瓦斯运移规律 下行通风 高位钻孔 瓦斯抽放 

分 类 号：TD712[矿业工程—矿井通风与安全]