Study On Seismic Data Interpretation Method Of 2D Reflection Seismic Exploration In Luobusha Chromite Mining Area

With the development of geological prospecting work in search for deep concealed ore prospecting, non seismic geophysical exploration methods due to its inherent defects of principle, its exploration precision decreased dramatically with the increase of depth, has been unable to fully meet the requirements of the deep resource exploration. Seismic exploration technology has deeper depth and higher resolution exploration ability, can prospect ore controlling structure, ore bearing rock, concealed deposit, etc. Carrying out seismic prospecting test study in metal mining area has high scientific and practical significance.The application level of Seismic exploration technology in metal ore areas is still in the test phase, there are many difficulties, Such as:complex geological structure, rock alteration is serious, the reflected wave group continuity is generally poor, and difficult to evenly distributed in the test region in standard layer, usually in reference to geophysical data less, drilling, logging data is less, brings great difficulty to geologic horizon calibration.In this paper, according to the mining area geological survey, we built complex geological structure seismic modeling, analysis and comparison the wave field characteristics the of simulation and actual profile, identification the reflection characteristics of ore-bearing rock body、surrounding rock and ore bearing rock, eliminate the interference information, help geological interpretation of the actual seismic data.According to application research of seismic attribute analysis, time-frequency analysis, and seismic channel integral technology on luobusha two seismic migration profile. Find the instantaneous amplitude, instantaneous phase attribute have a strong reaction in the lithologic interface. seismic channel integral inversion method provides underground rock wave impedance information to improve the rock interface division ability, have strong practical in the condition of the no well metal mining area. Using time-frequency analysis technology for seismic migration profile spectrum decomposition, found that high frequency component has low energy, high resolution, extraction the high frequency part of the seismic data, can improve the recognition ability of thin rock in metal mining area.Integrated the results of above research, carry out geological interpretation for the two seismic migration profile of chromite mining area, identified of ore controlling structure, ore-bearing rock and surrounding rock and occurrence of morphological features of luobusha mining, provided scientific basis for the study of the origin and material sources of chromite, provides reference information for further exploration.