Optimizing data for electrical resistivity tomography in hardened sites through the ratio method

作     者：Jiang Fuyu Gao Likun Chen Haijun Ni Jiong Li Fuqiang 蒋甫玉;高丽坤;陈海军;倪炯;李富强

作者机构：School of Earth Sciences and EngineeringHohai UniversityNanjing 211100China The First Geological Brigade of Jiangsu Geology and Mineral Resources BureauNanjing 210041China Nanjing Hydraulic Research InstituteNanjing 210029China China Energy Engineering Group Hunan Electric Power Design Institute Co.Ltd.Changsha 410007China 

出 版 物：《Journal of Southeast University(English Edition)》 (东南大学学报（英文版）)

年 卷 期：2024年第40卷第4期

页      面：372-385页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：National Key Research and Development Program of China(No.2021YFC3000103) 

主　　题：ratio method resistivity tomography hardened site distortion principle data optimization 

摘      要：To reduce the shielding effect of hardened layers on electrical resistivity tomography,a ratio method based on the distortion correction principle and the isolation coefficient is *** effects of the resistivity and thickness of hardened concrete layers on the detection of target objects are *** numerical simulations and indoor tank tests indicate that when the ratio method is employed to correct the original collected data,the maximum allowable error for the isolation coefficient should not exceed 1%.Notably,when the ratio of hardened layer thickness to electrode spacing does not exceed 1,correction through this method significantly enhances the recognition capability of target ***,when the hardened layer thickness is greater than the electrode spacing by a factor of 2 or more,the ratio method cannot achieve satisfactory *** case study of flood control engineering detection in the Zhangxi section of the Huangpen River in Dongzhi County demonstrates that the detection effect after correction by the ratio method is comparable to that for the adjacent unhardened pavement,and the influence of the hardened layer is obviously weakened,resulting in more reliable results.