Applicatiocn Of3D Seismic Prospecting In Coal Exploration

Seismic exploration is the elasticity of the underground media refers to the use of thedifferences of the earth observation and analysis of the seismic response of artificialstimulating that underground strata properties and morphology of a kind of geophysicalexploration methods.This paper mainly ChangCun coal mine in Shanxi relying on3d seismic data, thepaper applies3d seismic data ChangCun coal mine of Nanhuzhuang have crushed southarea detection, and coal seam studys the coal goaf collapse column, fracture, geologicalhazards, such as body of prospecting application technology and geological effect.Because Nanhuzhuang village have crushed south regional surface buildings underintensive, and currently built under (village) pressure cinderblocks segment of thegeological data, due to the constraint of technology at the time, the reliability of the poor,tectonic not clear, this gives exploration and mining are considerable difficulty.Considering the high resolution3d seismic exploration technology with its uniquelarge volume, high resolution, and advantages of honey control network, can accuratelydetect small geological-mass wait for an advantage, therefore choose the high resolution3dseismic exploration technology.To make exploration results are reliable, from design, acquisition, processing toexplain each stage has adopted various has the corresponding technical measures.Especially resolution improve is the key, including longitudinal resolution and thetransverse resolution, due to the improvement of longitudinal resolution to prevent a thinseam lost, improve the transverse resolution, had guaranteed in didn’t leak out at the sametime, the impact of coal seam exploitation of collapse columns in the mined-out area,fracture, geological hazards, such as body survey, in order to avoid brings every kind ofharm mining stage.This paper mainly studies the3d seismic survey coal field observation system, whenthe amount of explosives, spread length field parameters such as the impact of resolution,but also to the instrument parameters, such as sampling rate, recording length, effect ofworking frequency are analyzed. Finally, study the3d seismic data of the corresponding improving resolution dataprocessing, according to seismic stratigraphy, especially on coal seams of3-d seismic datashow the special mark, study the ChangCun coal mine Nnanhuzhuang village have crushedthe regional distribution and coal, which reflects the buried depth, embodies the3d seismicdata of geological survey of coal seam effect.The paper also combined with engineering geology, summarizes the principle of fault,collapse pole, and geological hazards, such as body in mined-out area of the reflection ofseismic data and distinguishing features. In other coalfield survey for the application of3-dseismic data area provides constructive results.