摘要
本文以吴四圪堵煤矿首采综放工作面回风巷为研究背景，采用声波检测仪对巷道两帮的钻孔进行了观测，并通过图表形式分析测得的观测数据，进而确定围岩松动圈的尺寸范围为1.0～1.2m。
In this paper, regarding return airway of the first fully-mechanised face in Wusigedu Mine as the research background, observing the drilling of roadway＇s sides by acoustic detector, analyzing the observed data by charts and tables, it determines that the size scope of the rock loose circle is 1.0~1.2m.
出处
《煤矿现代化》
2014年第4期81-83,共3页
Coal Mine Modernization
关键词
回风巷
声波检测仪
巷道围岩松动圈
return airway
acoustic detector
loose circle of the airway rock
