Research on 3D Seismic Geological Characteristics of Windblown Sand Loose Layer in Xiaobaodang Coal Mine
The terrain of Xiaobaodang No.1 Mine is undulating greatly and the geological structure is complex and variable.Traditional exploration techniques are difficult to meet the needs of omni-directional exploration of the mine,which seriously restricts the safe and efficient production of the mine.Taking the geological conditions of the first mining area of the mine as the research background,theoretical analysis,on-site testing,on-site exploration and other methods are comprehensively applied to judge and determine that the first mining area of the windblown sand loose layer in the mine is a general geological area for seismic exploration.The influencing factors of influencing 3D seismic exploration in this area are obtained to be terrain factors,excitation factors,and reception factors.A 3D seismic exploration scheme suitable for the windblown sand loose layer is formulated,and the thickness of the windblown sand loose layer in the exploration area varies between 50-115 m is ascertained.The thickest layer in the south reaches 115 m;The overall thickness of each coal seam in the exploration area shows a changing trend of gradually thickening from northwest to southeast,and the coal seams generally show a monoclinic shape inclined towards northwest;There are total 9 faults in 2-2 and 5-2 coal seams in the exploration area,all of which are normal faults,including 2 faults with a drop of more than 5 m.
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