高校地质学报2026，Vol.32Issue(4)：501-513,13.DOI:10.16108/j.issn1006-7493.2025040
喀斯特典型石灰岩坡地岩—土结构ERT解译研究
Research on Interpretating Electrical Resistivity Tomography(ERT)for Rock-Soil Structures in Typical Karst Limestone Slopes
摘要
Abstract
The distribution of soil and epikarst zones in karst areas is highly heterogeneous.Depicting the characteristics of rock-soil structures is crucial for regional hydrological research and key zone model construction.Taking typical limestone slopes in central Guizhou as an example,this study uses high-density electrical method as the main exploration means.Geotechnical structures are characterized based on electrical resistivity tomography(ERT),,and combined with soil probing method and typical profiles for comparative verification,the rock-soil structures of limestone slopes are analyzed under complex geological conditions.The results show that the resistivity of the soil layer ranges from 0 to 89.4 Ω·m;the average resistivity values of karst fractures are less than 585.3 Ω·m for thick-layer limestone and less than 292.8 Ω·m for thin-layer limestone;The performance of the high-density electrical method is better for interpreting soil area than for karst fracture area in,and better under single structure conditions than under complex structure conditions,and the interpreted lithological boundary l is clear;the average soil thickness of the entire limestone slope is about 0.495 m,and the average thickness of the epikarst zone is about 3.921 m;the soil and karst fractures show high spatial heterogeneity,and the epikarst zone is discontinuous.The results can help further apply the high-density electrical method to detect and characterize the rock-soil structures under complex lithological conditions in karst areas,providing data support for constructing models for karst critical zones.关键词
电阻率层析成像/岩—土结构/表层岩溶带/土壤厚度/石灰岩坡地Key words
ERT/rock-soil structure/epikarst/soil thickness/limestone slope分类
天文与地球科学引用本文复制引用
唐瞻宇,蒋卫威,彭韬,戴德求..喀斯特典型石灰岩坡地岩—土结构ERT解译研究[J].高校地质学报,2026,32(4):501-513,13.基金项目
国家自然科学基金项目(42261144672 （）
42077317 （）
42407118) （）
国家重点研发计划(2023YFF0806002) （2023YFF0806002）
贵州省科技厅基础研究重点项目(黔科合基础-ZK[2022]重点048) （黔科合基础-ZK[2022]重点048）
贵州省高层次创新型人才(黔科合平台人才-GCC[2023]059)联合资助 （黔科合平台人才-GCC[2023]059）
