Research on fine stratigraphic model inversion technology for coal mines
Aiming at the difficult problem of accurate description of coal seam thickness and roof and floor rock properties in 3D geolog-ical modeling of coal mines,this article proposed a three-dimensional geological modeling technique based on traditional interpolation of point and line data,with the addition of three-dimensional seismic data as constraints.Based on the radial basis function of the global in-terpolation method,the"point"and"line"data were used to correct the fine interpretation layer of the"volume"data.Based on the corrected fine stratigraphic framework,the geological statistical inversion method was used to predict the lithology and thickness of the coal bearing strata.The accuracy of the inversion results before and after correction was discussed and analyzed,with the stratigraphic framework as constraints.The results showed that the relative error between the corrected inversion results and the actual data was less than 5％.Compared with the uncorrected inversion results,the relative error of the corrected inversion results was reduced by 10％,and the error between the corrected results and the real value was controlled within 0.1 m.The corrected inversion results were in good a-greement with the actual horizontal drilling results.The thickness and spatial distribution of each lithology could be accurately de-scribed.With the results of the corrected inversion data,the accuracy of the final geological lithology model is greatly improved,and the accuracy of the stratigraphic information between boreholes is improved,which has obtained a good application effect in Jinjie Coal Mine.
万方数据
维普
