基于三维地震资料的河南永夏煤矿区李大庄煤矿探区构造精细解释

河南永夏矿区李大庄矿探区内煤层构造发育.结合区域构造地质背景,在三维地震勘探区开展地层对比追踪、断点解释和组合断层等工作,查明了探区褶皱形态与类型,刻画了断层的数量、密度、性质、断距和展布等特征.研究结果表明:探区褶曲及小的波状起伏较多,主要发育有6个褶皱;共组合煤层断层274条,正断层273条,逆断层1条,其中7条为...

Fine structural interpretation based on 3D seismic data of Lidazhuang coal mine exploration area in Yongxia mining area, Henan Province

The structure of Coal seam has developed in Lidazhuang exploration area, Yongxia mining area, Henan Province. Combined with regional structural geological background, the study works of stratigraphic correlation tracking, breakpoint interpretation and combined faults are carried out in 3D seismic exploration area. The form and type of folds in the exploration area are found out. The number, density, fault properties, fault distance and distribution of faults are described. The results show that:the folds and small undulations developed in the exploration area, and six folds are mainly developed. There are 274 faults in the combined coal seam, Including 273 normal faults and one thrust fault, seven of which are inherited active faults of Cenozoic. The fault density is high, it is 22.7 per square kilometer on average. The fault distribution direction is mainly NNE and near SN. The fault fall is mainly 5-10m, there also developed with a drop of more than 100 meters. The fine interpretation of the three-dimensional earthquake has changed the previous simple understanding of the structure in the exploration area, which has deepened the understanding of the structural development characteristics of the exploration area. The study work provides important geological basis for the rational layout of mining face in production mine of Lidazhuang.