基于高密度电阻率法的深部渗漏通道三维数值模拟与案例分析  

Three-dimensional numerical simulation and case analysis of deep leakage channel based on multi-electrode resistivity method

作　　者：李春婷 闵刚[1] 刘康 舒荣波[2] 司富豪 孙浥钦 LI Chunting;MIN Gang;LIU Kang;SHU Rongbo;SI Fuhao;SUN Yiqin(Key Laboratory of Earth Exploration and Information Technology of Ministry of Education,Chengdu University of Technology,Chengdu 610059,China;Institute of Multipurpose Utilization of Mineral Resources,Chengdu 610041,China)

机构地区：[1]成都理工大学地球探测与信息技术教育部重点实验室,成都610059 [2]中国地质科学院矿产综合利用研究所,成都610041

出　　处：《物探化探计算技术》2024年第6期725-734,共10页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家自然科学基金重点项目(41930112)。

摘　　要：在水库大坝、尾矿库、稀土矿原位地浸等领域中存在的渗漏通道会造成水库大坝及尾矿库溃坝,稀土矿山水土流失、山体崩塌,严重危害人民的生命安全、破坏环境,面对这些严峻形势,生态文明建设迫在眉睫。在工程领域,高密度电阻率法对断层、堤坝渗漏通道、煤矿采空区等具有良好的识别效果。笔者针对这类型的渗漏通道,结合地质情况,建立一系列三维模型,对采用二极、三极、偶极-偶极、温纳、温纳-斯伦贝尔装置进行数值模拟和反演,分析不同装置对渗漏通道的勘探效果。这对于用三维高密度电阻率法在水库大坝、尾矿库、稀土矿原位地浸等领域的渗漏通道实际探测中具有一定的指导意义。在实际案例中,采用先进资料处理技术高质量完成实测数据的处理解释,建立工区地下三维电阻率结构模型,经过后期钻孔验证,反演结果有效地识别了渗漏通道、孤石以及风化层残积物,为工区正常运转及环境保护提供重要参考。The leakage channels existing in the fields of reservoir dams,tailings reservoirs,and in-situ leaching of rare earth minerals will cause dam failure of reservoir dams and tailings reservoirs,soil erosion,and mountain collapse of rare earth mines,seriously endangering people's life safety and destroying the environment.In these severe situations,the construction of ecological civilization is imminent.In engineering,multi-electrode resistivity method has a good recognition effect on faults,dam leakage passages,coal mine goaf,etc.In this paper,a series of three-dimensional models are established for this type of leakage channel,combined with the geological conditions,and the numerical simulation and inversion of the two-pole,three-pole,dipole-dipole,Wenner and Wenner-Slunber devices are carried out to analyze the exploration effect of different devices on the leakage channel.This has particular guiding significance for detecting leakage channels in reservoir dams,tailings reservoirs,and in-situ leaching of rare earth mines using three-dimensional high-density resistivity methods.In the actual case,the advanced data processing technology is used to complete the processing and interpretation of the measured data with high quality,and the underground three-dimensional resistivity structure model of the work area is established.After the later drilling verification,the inversion results effectively identify the leakage channel,boulder,and weathering layer residue,which provides an essential reference for the regular operation and environmental protection of the work area.

关 键 词：渗漏通道 高密度电阻率法 三维模型 数值模拟 三维成像 

分 类 号：P631.322[天文地球—地质矿产勘探]