摘要
以9105工作面为研究对象,采用FLAC3D模拟工作面回采后覆岩变形破坏规律,根据岩层应力分布获得工作面导水裂隙带最大高度为29.3 m。通过向运输巷顶板打2个钻孔观测工作面导水裂隙带高度,得到1#、2#钻孔探测导水裂隙带最大高度分别为27.3 m、28.3 m左右。根据数值模拟、钻孔探测和覆岩性质获得工作面导水裂隙带最大高度为29.3 m。
Taking 9105 working face as the research object,FLAC3D was adopted to simulate the deformation and failure law of overburden after stoping of working face,and the maximum height of water-conducting fracture zone in working face was obtained as 29.3 m according to the distribution of rock stress.By drilling two boreholes into the roof of the transport roadway to observe the height of the water-conducting fracture zone on the working face,the maximum heights of the water-conducting fracture zone detected by boreholes 1 and 2 are about 27.3 m and 28.3 m respectively.According to numerical simulation,borehole detection and overlying rock properties,the maximum height of water-conducting fracture zone in working face is 29.3 m.
作者
张罡
Zhang Gang(Gaizhou Coal Industry Co.,Ltd.,Shanxi Coal Transportation and Sales Group Co.,Ltd.,Gaoping,Shanxi 048400)
出处
《江西煤炭科技》
2020年第4期129-131,共3页
Jiangxi Coal Science & Technology
关键词
导水裂隙带
高度
钻孔探测
覆岩
water flowing fractured zone
height
boring
overlying strata
