【摘要】 淮北矿区地处华东腹地,其采区地震勘探虽具有良好的激发条件及较高的煤层反射波能量,但因地质构造复杂、煤层数多、深层反射信噪比低、新生界地层厚度大及地面障碍物遍布等原因,致使三维地震勘探困难较大。通过开展高密度三维地震勘探及岩性勘探,综合利用波阻抗反演、叠前时间偏移与叠前深度偏移等新技术手段,在淮北矿区成功地进行了煤层厚度预测、岩浆岩侵蚀带预测及小断层对比等,为煤炭安全高效开采及枯竭矿山接续提供了可靠的地质资料。根据淮北矿区10多年来三维地震勘探的实践经验,指出了采区勘探中依然存在的问题,并提出了解决这些问题的方法。更多还原

【Abstract】 The Huaibei mining area is situated in the hinterland of East China,it although has good shot terms and higher coal seam reflection energy,but because of complicated geological structures,numerous coal seams,low deep layer reflection signal-noise ratio,thick Cenozoic strata and pervasive ground surface obstacles,bring about difficulties in 3D seismic prospecting.Through the launching of high density 3D seismic prospecting and lithologic prospecting,comprehensively using new technical means of wave impedance inversion,prestack time migration and prestack depth migration,successfully carried out coal seam thickness prediction,magmatic intrusion belt prediction and minor fault contrast etc.provided with reliable geological information for coalmine safe and high efficiency mining and exhausted coalmine following up.Based on Huaibei mining area’s 3D seismic prospecting practical experiences in dozen years or so,pointed out problems still existed in winning district prospecting and methods to solve put forward.更多还原