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起伏地形条件下簿板磁异常双聚焦解释法

发表时间:2017-06-30  浏览量:39  下载量:11
全部作者: 蔡家雄,赵双求
作者单位: 湖南省国土资源厅;庄胜矿产资源集团有限公司
摘 要: 传统的反演解释理论研究基于数理模型,但会受到正常场值、剖面方位及磁化方向等多方面的影响。而对起伏地形下的磁异常,传统反演解释增加了更多的不确定性因素。研究提出基于三角形解释理论下的双聚焦解释方法,推导起伏地形条件下的簿板磁场计算公式与图示,研究起伏地形条件下簿板异常精确反演的先决条件;讨论反演问题中双聚焦的方法技术;介绍典型算例及应用实例的找矿效果。双聚焦解释法对于模型异常可给出精确解;对于实测异常可给出最佳解。
关 键 词: 地球探测与信息技术;起伏地形;簿板磁异常;原点聚焦;步长聚焦;相似解释
Title: Double focusing method of magnetic anomaly of dyke under the condition of undulate topography
Author: CAI Jiaxiong, ZHAO Shuangqiu
Organization: Department of Land and Resources of Hunan Province; Junefield Mineral Resources Holdings Limited
Abstract: The traditional theory of inversion interpretation is based on the study of mathematical model, but the results are affected by the values of the normal field, the azimuth of the profile and the direction of magnetization. For the inversion of magnetic anomalies under the condition of undulate terrain, the results will bring more uncertainties. This paper presents the double focusing method based on the triangular interpretation theory, deduces the formula and graphics of magnetic fields of dyke, and researches prerequisite for accurate inversion under the condition of undulate topography. This paper also discusses methods and techniques of double focusing in the inversion, and illustrates application results of theoretical model and the actual project model. The exact value and optimum value will be solved by the method of double focusing for the theoretical anomaly and the actual anomaly respectively.
Key words: earth-exploration and information techniques; undulate topography; magnetic anomaly of dyke; focusing to the origin; focusing to the step; similar interpretation
发表期数: 2017年6月第12期
引用格式: 蔡家雄,赵双求. 起伏地形条件下簿板磁异常双聚焦解释法[J]. 中国科技论文在线精品论文,2017,10(12):1416-1424.
 
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