摘要
地面三维地震由于其观测精度的限制,对小陷落柱等不均匀地质体常常漏测或者定位误差大,影响煤矿安全开采。段王煤矿090606工作面进行透射实验,通过频散分析拾取了1344个埃里相旅行时,并进行速度与吸收系数层析成像反演计算,获得试验区域内槽波群速度及吸收系数分布图,排除了地面三维地震勘探圈定的陷落柱,为煤矿高效安全生产修改了生产方案。回采验证了1~9号陷落柱,位置偏差小于10 m。
Based on restrictions of observation accuracy and heterogeneous geological body of small collapse column,surface 3D seismic always had leakage or large positioning error, which affected safety mining.Transmission experiment was made in 090606 working face of Duanwang Mine to pick up 1344 airy phases thruogh dispersion analysis. Meanwhile, the velocity and absorption coefficient tomography inversion calculation were conducted to get wave group velocity in test area and absorption coefficient distribution, not only eliminated collapse column delineated by ground 3D seismic exploration,but also modified production project for high efficiency and safety production. 1 ~ 9 positioncollapse columns were verified by stoping, and deviation was less than 10 m.
作者
崔焕玉
Cui Huanyu(China University of Mining and Technology, Beijing 100083, China Hebei Coal Science Research Institute, Xingtai 054000, China)
出处
《煤炭与化工》
CAS
2017年第4期76-79,共4页
Coal and Chemical Industry
关键词
陷落柱
频散分析
层析成像
collapse column
dispersion analysis
tomography
