摘要
在电磁法数值模拟中,正演模拟是认识各种地电条件下的大地电磁响应特征的良好途径,模型正演得到的结论,对于资料处理、反演、解释具有积极的指导作用。通过在巴音戈壁盆地开展可控源音频大地电磁测量(CSAMT),结合巴音戈壁盆地已知钻孔资料,建立了初始地电模型,进行模型正演计算得出正演数据,通过对正演数据进行反演计算,确定合理的反演模型和反演参数,提高资料反演的准确性,最后根据对实测数据的反演计算、资料解释、综合分析结果,推断研究区铀储层巴音戈壁组的空间展布特征,解释结果得到钻孔资料的验证,在砂岩型铀矿勘查中取得较好的效果。
Forward modeling is a good way to understand the characteristics of magnetotelluric response under various geoelectric conditions in electromagnetic numerical simulation.The conclusion of forward modeling has a positive guiding role for data processing and inversion interpretation.In this paper,through the controlled source audio frequency magnetotelluric survey(CSAMT)in the Bayingobi Basin,combined with the known drilling data,the initial geoelectric model is established.The forward model is calculated and the forward data is obtained.Through the inversion calculation of the forward data,the reasonable inversion model and inversion parameters are determined,and the accuracy of the data inversion is improved.Finally,on the basis of the inversion calculation,data interpretation and comprehensive analysis result of the measured data,it is inferred for the spatial distribution characteristics of Bayingobi Formation of uranium reservoir in the study area.The interpretation result has been validated by the drilling data.There has achieved a good result in the exploration of sandstone type uranium deposit.
作者
王亚飞
张伟
焦智伟
邱崇涛
WANG Yafei;ZHANG Wei;JIAO Zhiwei;QIU Chongtao(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang 050002,Hebei,China;Uranium Resources Geophysical Exploration Technology Center(Key Laboratory),China Nuclear Industry Group Company,Shijiazhuang 050002,Hebei,China;Hebei Provincial Key Laboratory of Airborne Survey and Remote Sensing Technology,Shijiazhuang 050002,Hebei,China)
出处
《矿产与地质》
2024年第1期144-153,共10页
Mineral Resources and Geology
基金
中国核工业地质局“内蒙古阿拉善塔木素-银根地区可控源音频大地电磁测量”项目(编号:202203-01)资助。
