摘要
煤层回采过程中,覆岩冒落带发育高度的准确确定,对于煤矿瓦斯、水灾害防治具有重要意义。以寺和2#井为试验矿井,采用钻孔电视探测系统,探测覆岩冒落带发育高度,并对采动过程中裂隙发育特征进行定量分析。研究结果表明:工作面覆岩冒落带发育高度4.2~4.4 m;采动过程中覆岩裂隙数量呈现增加-降低-增加周期性变化;裂隙聚集区位于近煤壁区域且裂隙密度曲线呈"蛇"形分布。
In coal seam recovery process,the height of caving zone is important significance to prevent mine water and gas. Taking Sihe No.2 mine as the experimental mine by borehole boreholetelevision observation method,overburden height of caving zone is monitored. At the same time,quantify analysis of fissure development evolution are carried out. The results show that:caving zone height of Sihe No.2mine changes from 4.2 m to 4.4 m;quantity of fractures is cyclical changes of increase-reduce-increase in mining process;fractures density distribution curves of overlying strata like sanke.
出处
《煤炭技术》
CAS
北大核心
2015年第3期103-105,共3页
Coal Technology
关键词
采矿工程
冒落带
钻孔电视
mining engineering
caving zone
borehole television
