摘要
在实际的地球物理勘探过程中,如何根据实际的勘探环境选择合适的观测方式和观测装置一直是地球物理勘探的重要问题之一.本文采用井-地三极和地-井三极联合电阻率观测装置对起伏地形下典型地质体模型进行正演模拟,正演响应的结果表明井-地联合装置比单一地表装置大大提高了对目标地质体位置的分辨能力.当采用井-地三极装置进行观测时,地形会导致异常响应的位置发生偏移,形态无明显改变;而采用地-井三极装置进行观测时,地形会很大程度上改变异常响应的形态和位置,很难有效推断目标地质体位置.
In the process of geophysical prospecting,choosing suitable observation methods and observation devices has always been one of the important issues according to the prospecting environment.The forward modeling using the borehole-ground pole-dipole observation device or the ground-borehole pole-dipole observation device on the typic geologic body under undulating terrain by.The analysis results show that the borehole-ground joint observation method for geological exploration has greatly improved the ability to distinguish the position of abnormal bodies compared to the single surface method.When the borehole-ground pole-dipole observation device is used for observation,the undulating terrain will cause the position of the abnormal response to shift without significant changes in the shape of the abnormal response.When the ground-borehole pole-dipole observation device is used for observation.the undulating terrain will largely change the shape and location of the abnormal response,making it difficult to effectively infer the position of the typic geologic body.
作者
孟麟
王智
姜匡义
马伟
卢新勋
MENG Lin;WANG Zhi;JIANG KuangYi;MA Wei;LU XinXun(School of Electronics and Information Engineering,Yangtze University,Jingzhou 434023,China)
出处
《地球物理学进展》
CSCD
北大核心
2021年第4期1590-1596,共7页
Progress in Geophysics
基金
国家自然科学基金项目(41604093)
大学生创新创业训练计划项目(2019090)联合资助。
关键词
井-地观测装置
起伏地形
正演模拟
Borehole-ground observation device
Undulating terrain
Forward modeling
