摘要
为了深入了解浅埋深厚煤层开采的覆岩运动规律,采用现场实测等手段对阳湾沟煤矿6204工作面覆岩运动规律进行了详细的研究,结果表明:阳湾沟煤矿导水裂隙带高度为97m,为采厚的12. 12倍,垮落带高度为22m,为采厚的2. 75倍;采空区的中间测点下沉量大于周边的下沉量,中间下沉速度较快,在整体的形式上表达出对称方式;阳湾沟煤矿在较窄工作面地表的启动距为78m,大约为埋深的0. 45倍左右,启动距偏大;工作面上方不能形成"竖三带",而只能形成冒落带和裂隙带的"两带"结构形式。
In order to understand overlying strata movement law of shallow-buried deep coal seam,in this paper,field measurement was carried in 6204 working face of Yangwangou Coal Mine,the results show that： the height of water-conducting fissure zone is 97 m,which was 12. 12 times of mining thickness,and the caving zone height was 22 m,2. 75 times of mining thickness; subsidence at the goaf center was greater than that of the measuring points around,which also sank faster,showed the symmetry in the overall form; in Yangwangou Coal Mine,the starting distance was relatively large,reaching 78 m,at the surface above narrow face of coal mine,which was about 0. 45 times of the buried depth; the two-zone（ caving zone and fissure zone） rather than＂vertical three-zone＂were formed,above the working face.
作者
王瑞
WANG Rui(Hongtai Company,Datong Coal Mine Group,Datong 037003,China)
出处
《煤炭工程》
北大核心
2018年第10期101-105,共5页
Coal Engineering
关键词
浅埋深
厚煤层
覆岩运动规律
冒落带
shallow buried
thick coal seam
overlying strata movement law
caving zone
