摘要
为了研究综放工作面切顶卸压沿空留巷技术,以曹家滩煤矿122109综放工作面为工程背景,对巷道围岩运动规律进行研究,并在现场进行试验。结果表明:采用定向预裂爆破技术能够切断巷道与上部围岩的联系,使留巷围岩段环境得到改善,沿空留巷围岩控制整体效果良好。
In order to study the technology of roof cutting and pressure relief and retaining roadway along goaf in fully mechanized top coal caving face,taking 122109 fully mechanized top coal caving face in Caojiatan Coal Mine as the engineering background,the movement law of surrounding rock of roadway is studied and tested in the field.The results show that the directional presplitting blasting technology can cut off the connection between the roadway and the upper surrounding rock,improve the surrounding rock environment of retaining roadway,and the overall effect of surrounding rock control of retaining roadway along goaf is good.
作者
张国辉
邢永
ZHANGGuohui;XING Yong(Shaanxi coal caojiatan Mining Co.,Ltd.,Yulin 719000,China)
出处
《煤矿现代化》
2022年第5期5-8,共4页
Coal Mine Modernization
关键词
沿空留巷
切顶卸压
围岩控制
gob-side entry retaining
roof cutting to release pressure
surrounding rock control