摘要
浅部采空区探测一般采用高密度电法,但该方法的探测结果一般都是剖面形式.在圈定的大范围采空区内,高密度法也只能确定测点周边电阻或某一条剖面的电阻分布情况,并不能很好的利用其他周边测线的结果和采集到的地质标本以及其他地质信息.地质信息也只是作为反演结果的判定条件,不参与计算过程,同时以往采集的大量的二维高密度数据也需要得到进一步开发计算.因此,对地质信息进行赋值,通过标准偏差确定赋值的合理性,最后对联合地质资料进行反演迭代计算,得到三维铁矿采空区结果,并与二维反演结果、实地际踏勘情况、未添加赋值信息的三维反演结果相对比,赋予地质信息的三维反演结果对采空区、山体裂隙的识别更精细直观.
The high density electrical method is generally used in shallow goaf detection,but the detection results are generally in the form of profile.Particularly,In the delineated large area of goaf,only the resistance around the measuring point can be determined,or the resistance distribution of a certain section,which can not make good use of the results of other peripheral survey lines and the collected geological specimens and other geological information.In inversion calculation,geological information is only used as the criterion of the result and does not participate in the inversion calculation.At the same time,a large number of two-dimensional high-density data collected in the past also need to be further developed and calculated.Therefore,the rationality of the assignment is determined by the standard deviation.Finally,the inversion iterative calculation of the joint geological data is carried out,and the results of the three-dimensional iron ore goaf are obtained,and compared with the two-dimensional inversion results,the field interstep survey,and the three-dimensional inversion results without the assignment information,the 3 D inversion results of the geological information are more precise and intuitive to the goaf and the identification of mountain fissures.
作者
孙鹏飞
赵强
黄祥祥
王艳楠
SUN Peng-fei;ZHAO Qiang;HUANG Xiang-xiang;WANG Yan-nan(Hebei University of Engineering,Handan 056000,China;519 Team North China Geological Exploration Bureau,Baoding 071051,China)
出处
《地球物理学进展》
CSCD
北大核心
2019年第6期2315-2319,共5页
Progress in Geophysics
基金
国家自然科学基金资助项目“地质数据作为变量的水平变密度联合反演模型”(41604069)
河北省教育厅科学研究计划项目“邯郸地下热水非常规重磁对应反演技术的应用”(QN2017310)的联合资助
关键词
数据预处理
三维反演
高密度电法
反距离加权插值
采空区
联合反演
Data preprocessing
Three-dimensional inversion
Multi-electrode resistivity method
Inverse Distance Weigh
Goaf
Joint inversion
