摘要
为了开采建构筑物下的煤炭资源,延长矿井服务年限,以榆林地区二墩煤矿为研究背景,研究膏体充填体与上覆岩层的关系,通过理论计算得出岩梁上的载荷值为q=0.087 MPa,直接顶的极限跨距L=8.74 m,条带煤柱宽度b=15.6 m。运用FLAC^(3D)软件进行模拟分析,在采宽为8 m、充填体强度为6 MPa时,得出煤柱的应力最大达到7.5 MPa,充填体平均应力达到5.0 MPa。
In order to exploit the coal resources under the structure and prolong the service life of the mine,taking Erdun Coal Mine in Yulin area as the research background,the relationship between paste filling body and overlying strata is studied.Through theoretical calculation,the load value on rock beam is q=0.087 MPa,the limit span of direct roof is L=8.74 m,and the width of strip coal pillar is b=15.6 m.By using FLAC^(3D)software for simulation analysis,when the mining width is 8 m and the strength of the filling body is 6 MPa,the maximum stress of the coal pillar reaches 7.5 MPa,and the average stress of the filling body reaches 5.0 MPa.
作者
党宏文
苏保平
秦建壮
Dang Hongwen;Su Baoping;Qin Jianzhuang(Shendong Coal Group Company,Shaanxi Yulin 719000;Zaozhuang Mining Industry Jining Daizhuang Coal Industry Co.,Ltd.,Shandong Jining 272000;China University of Mining and Technology,Jiangsu Xuzhou 221116)
出处
《山东煤炭科技》
2022年第9期83-85,89,共4页
Shandong Coal Science and Technology
关键词
条带
充填
模拟
strip
filling
simulation
