煤矿精细地层模型反演技术研究  

Research on fine stratigraphic model inversion technology for coal mines

作　　者：任永强 杨歌 Ren Yongqiang;Yang Ge(Guoneng Shendong Coal Technology Research Institute,Shenmu 719300,China;Beijing Longruan Technology Co.,Ltd.,Beijing 100190,China)

机构地区：[1]国能神东煤炭技术研究院,陕西神木710093 [2]北京龙软科技股份有限公司,北京100190

出　　处：《能源与环保》2024年第1期135-140,共6页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：中国神华能源股份有限公司神东煤炭分公司项目(技术研究院HT(2021)12号)。

摘　　要：针对煤矿三维地质建模中煤层厚度及顶底板岩性准确刻画的难题,提出在传统“点”和“线”数据插值为主的三维地质建模技术基础上,加入三维地震数据作为约束,基于全局插值方法的径向基函数,用“点”和“线”数据对“体”数据精细解释层位进行校正,以校正后的精细地层框架为基础,基于地质统计学反演方法对煤系地层进行了岩性及厚度预测,分析了校正前与校正后地层框架为约束的反演结果准确性。研究结果表明,校正后的反演结果与实际资料的相对误差在5%以内,相较于未校正的反演结果,校正后的反演结果相对误差降低10%,校正后的结果与真实值之间误差控制在0.1 m以内,说明校正后的反演结果与实际水平钻孔结果吻合较好,能够精确刻画各岩性厚度及其空间展布情况。通过分析校正后的反演数据结果发现,地质岩性模型的精度得到极大提高,提高了钻孔间地层信息的准确度,在锦界煤矿取得了较好的应用效果。Aiming at the difficult problem of accurate description of coal seam thickness and roof and floor rock properties in 3D geological 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 interpolation 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 agreement with the actual horizontal drilling results.The thickness and spatial distribution of each lithology could be accurately described.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.

关 键 词：地层框架 地质统计学反演 岩性模型 锦界煤矿 三维地质建模 

分 类 号：TD745[矿业工程—矿井通风与安全]