采煤工作面瓦斯抽采有效半径现场测定方法  

Field Determination Method of Effective Radius of Gas Drainage in Coal Mining Working Face

作　　者：王兴华 Wang Xinghua(Shandong Wanxiang Mining Industry Co.,Ltd.,Shandong Jinan 271107)

机构地区：[1]山东万祥矿业有限公司,山东济南271107

出　　处：《山东煤炭科技》2022年第9期110-113,共4页Shandong Coal Science and Technology

摘　　要：为解决潘西煤矿6199采煤工作面本煤层预抽瓦斯抽采浓度低、抽采流量低等问题,通过采取数值模拟与SF示踪气体现场实测相结合的方法进行了抽采有效半径的测定,得到了孔径94 mm的本煤层瓦斯抽采钻孔抽采有效半径是2.8 m。根据抽采有效半径进行科学布置钻孔间距,抽采浓度、抽采流量得到提高,获得了较好的抽放效果。In order to solve the problems of low concentration and low discharge of pre-drainage gas in the 6199 coal mining working face of Panxi Coal Mine,the effective radius of gas extraction in this coal seam is determined by combining numerical simulation with field measurement of SFtracer gas.It is obtained that the effective radius of gas drainage borehole in this coal seam with a diameter of 94 mm is 2.8 m.According to the effective radius of extraction,the spacing of boreholes is arranged scientifically,the extraction concentration and extraction flow are increased,and a better drainage effect is obtained.

关 键 词：采煤工作面 瓦斯抽采 有效半径 SF6示踪气体 

分 类 号：TD712.6[矿业工程—矿井通风与安全]