The Application Of Seismic Method In Deep Prospecting

In recent years,China has a large resource consumption,particularly in the non-renewable resources,The proven reserves of mineral resources are insufficient,the search for deep mineral resources is imminent.But the traditional geological methods are insufficient to meet the needs of the current mineral exploration.Seismic prospecting technology detection depth is large,the resolution is high,and the detection precision is high.It is able to clear the description of the underground geologic structure and more and more popular among scholars in metals geological exploration.The Cu-Ni mine in Xinjiang has been in operation since 1989,and has been in production for 28 years so far,and the existing reserve is not sufficient,belonging to the moderate crisis mine.The seismic exploration is mainly aimed at the measurement and seismic exploration,identifying the geological structure in the deep part of the surveyed area,inferring that ore-forming material sources,and providing the basis for determine magma migration channel;At the same time,finding out the location and shape of the periphery and deep rock,predicting the metallogenic prospecting in the area to set up the target area for future exploration of the mining area,easing the crisis mines.Firstly,in conjunction with the g geological data of the mine,we establish the geological model and use the acoustic equation to simulate.Through the analysis of the simulation results,it provides reflection wave seismic prospecting method is demonstrated in the survey area and provides assistance for the selection of field observation systems.Secondly,we carry out the investigation of data collection experiment and field interference wave in the field and choose the instrument parameters according the results.Then,combining with field test and indoor analysis,we carry out two field data collection operations in the mining area.The first time,we use the explosive as explosive source and the second time is Kz28 vibroseis.We use the Sercel 428 XL cable telemetry seismic data acquisition system to receive the date.Different excitation source seismic data contrast analysis shows that the dynamite source and vibroseis excitation of seismic records in the frequency spectrum,phase and detecting depth is comparative,providing the technical support for the explain of different sources' seismic data.Based on the conventional data processing,combining with the geological characteristics,the accurate refraction is carried out,to eliminate the effect of surface fluctuations on seismic data.Besides,we investigate the interference wave of the mining,minimize distractions from the outside world,greatly improved the signal-to-noise ratio of seismic data.The seismic profile is of high resolution,the image is clear,comprehensiving on the basis geological data,combining with the core test results,we explain the deep geological structures.The explained seismic section proves the main structure and the concealed rocks,and has been verified by drilling,which confirms the existence of the ore rock in the deep part of the earthquake interpretation.Combined with the seismic exploration results of metallogenic prospect of metallogenic prediction of mining area,selects the new prospecting target areas,for mine deep concealed ore pointed out the prospecting direction.Combining with geological,geophysical and geochemical data,this paper also discusses the deep magmatic migration channel and the metallogenic mode of the deposit formation.