摘要
为了得到风速与瓦斯浓度在综采工作面巷道三维空间的分布规律,采用现场实测与理论分析相结合的研究方法,以沙曲煤矿14205综采工作面为研究对象,分别对检修班期间与生产班期间综采工作面瓦斯浓度与风速进行实测,分别对综采工作面内风速与瓦斯浓度从工作面巷道走向方向、工作面推进方向及垂直于工作面底板方向3个空间方向上的分布规律进行了分析,研究表明:靠近煤壁的巷道断面区域为综采工作面定点测风最佳位置,综采工作面前半段工作面长度范围内靠近煤壁且处于下部的巷道断面区域,和综采工作面后半段工作面长度范围内靠近采空区且处于上部的巷道断面区域为瓦斯浓度重点监测区域。
In order to obtain the distribution laws of wind speed and gas concentration in the three-dimensional space of roadway of fully mechanized mining face, adopting the research methods of field measurement and theoretical analysis, taking 14205 fully mechanized face of Shaqu Coal Mine as the research object, gas concentration and wind speed in fully mechanized coal face during production period and maintenance period were measured. The distribution laws of wind speed and gas concentration in fully mechanized mining face from three spatial directions of working face roadway strike direction, working face advance direction and perpendicular to working face floor direction were analyzed respectively. The results showed that the roadway section area near the coal wall was best area for wind measurement, and the roadway area which was near the coal wall and at the lower half section of roadway in front of half length range of coal face and the roadway area which was near the gob and at the upper half section of roadway in the length of the second half of coal face were key monitoring areas of gas concentration.
作者
姜黎明
JIANG Liinitig(Mine Safety Technology Branch of Chinn Coul Research Institute, Beijing 100013, China;Stale Key Laboratory of Coal Mining and Clean Utilization (China Coal Research Institute), Beijing 100013, China)
出处
《煤矿安全》
CAS
北大核心
2019年第3期162-166,共5页
Safety in Coal Mines
关键词
综采工作面
瓦斯浓度
风速
工作面巷道走向方向
工作面推进方向
fully mechanized coal mining face
gas concentration
wind speed
heading direction of working face roadway
advancing direction of coal mining face
