自然电位数据阻尼最小二乘逐步解析反演研究——以桂林市寨底地下河为例

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英文篇名：Damped least squares gradually analysis inversion of self-potential data:take Zhaidi underground-river in Guilin for example 作者：刘永亮 ; 甘伏平 ; 韩凯 ; 邬健强 ; 梁东辉 ; 张伟 ; 郑智杰 ; 刘伟 ; 陈贻祥 英文作者：LIU Yong-liang;GAN Fu-ping;HAN Kai;WU Jian-qiang;LIANG Dong-hui;ZHANG Wei;ZHENG Zhi-jie;LIU Wei;CHEN Yi-xiang;Institute of Karst Geology,CAGS,Ministry of Land Resources and Guangxi Key Laboratory of Karst Dynamics; 关键词：自然电位 ; 阵列观测 ; 阻尼最小二乘 ; 逐步解析反演 ; 极化强度 ; 极化角度 英文关键词：Self-potential;;Array observation;;Damped least squares;;Gradually analysis inversion;;Polarization angle;;Electric dipole moment 中文刊名：DQWJ 英文刊名：Progress in Geophysics 机构：中国地质科学院岩溶地质研究所国土资源部广西岩溶动力学重点实验室; 出版日期：2018-07-27 08:55 出版单位：地球物理学进展 年：2019 期：v.34;No.154 基金：中国地质科学院基本科研项目(YYWF201640);; 国家自然科学基金项目(41572232)资助 语种：中文; 页：DQWJ201902047 页数：6 CN：02 ISSN：11-2982/P 分类号：365-370

摘要

本文对利用自然电位法探测岩溶地下河做了探索性研究.选择桂林市寨底地下河发育良好的区域,通过阵列式连续时间观测方式获得了随时间连续变化的自然电位数据.提出自然电位数据阻尼最小二乘多参数逐步解析反演方法,并对获得的数据进行反演,以此提取数据中极化源的信息,包括极化源位置、极化角度和极化强度等.在所有时间道的数据反演结果中,将观测范围内极化源的空间位置等参数绘制成相应图件,与观测区地下河资料进行对比研究.研究结果表明:该反演方法能够有效提取自然电位数据中隐含的极化源信息;极化源位置可作为判断含水构造空间位置的依据,极化角度和极化强度可用来区别含水构造类型;多参数综合解释可有效定位地下河的平面位置.
        This paper makes an exploratory study of the use of self-potential method for underground-river in the karst area. First, obtaining the self-potential data of continuous change with time through the array of continuous time observations in the well-developed area of the underground-river in the Zhaidi of Guilin. Then proposed the damped least squares multi-parameter gradually analysis inversion of self-potential data to recover the information of nature sources, including the location parameter, the polarization angle and the electric dipole moment. Drawing the corresponding map with the location of nature sources and other parameters in the results of each time data inversion, then comparing with the caving results of underground-river in the observation area. The results show that the inversion method can effectively recover the information of nature sources buried in the data of self-potential. And the location of nature sources can be used to judge the spatial location of watery structure. Also, the polarization angle and electric dipole moment can be used to distinguish the type of watery structure. The underground-river can be located by the joint interpretation of these parameters effectively.

引文

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