Electrical resistivity imaging in transmission between surface and underground tunnel for fault characterization

2D and 3D Modelling Electrical Resistivity Tomography (ERT) of Landslide Sliding and Weak Bedding Plane Along Mountain Road North Bengkulu-Lebong, Indonesia

“…The difference between the obtained and actual resistivity values is referred to as the Root Mean Square Error (RMSE), which can be minimized by iteratively repeating the data. Thus, to reduce the RMSE value, a least squares optimization method is applied in the subsequent stages of data acquisition (Lesparre et al, 2016).…”

2D and 3D Modelling Electrical Resistivity Tomography (ERT) of Landslide Sliding and Weak Bedding Plane Along Mountain Road North Bengkulu-Lebong, Indonesia

“…The difference between the obtained and actual resistivity values is referred to as the Root Mean Square Error (RMSE), which can be minimized by iteratively repeating the data. Thus, to reduce the RMSE value, a least squares optimization method is applied in the subsequent stages of data acquisition (Lesparre et al, 2016).…”

Recognition of boulder in granite deposit using integrated borehole and 2D electrical resistivity imaging for effective mine planning and development

“…The 2D ERT survey arrangement in the area of investigation comprised of six resistivity lines (R1, R2, R3, R4, R5, R6) at various locations having lengths of 400 m each, schematized in Figure 3. The subsurface apparent resistivity data was acquired by exploiting multichannel ABEM LS Terameter, connected to two multi cable system with 31 output each, allowing a total number of 62 stainless steel electrodes arrangement linearly (Lesparre et al, 2016;Longo et al, 2014;Persson et al, 2011). Prior to the resistivity data collection, the total number of electrodes (61 electrodes, one electrode as the center electrode) and spacing (5 m) between them was set, which remained constant throughout the survey.…”

Cross-Borehole ERT Monitoring System for CO2 Geological Storage: Laboratory Development and Validation

“…The physical models, i.e., governing equations, solved to obtain the parameters of electrical field are Maxwell's equations. According to Maxwell's equation and the quasi-static field assumption, the relationship between current density (J), conductivity (σ) and electric field intensity (E) in any point of the sensitive field generated by current electrode of ERT system is formulated as Equations ( 1) and ( 2) [24].…”

2D and 3D Modelling Electrical Resistivity Tomography (ERT) of Landslide Sliding and Weak Bedding Plane Along Mountain Road North Bengkulu-Lebong, Indonesia

“…The difference between the obtained and actual resistivity values is referred to as the Root Mean Square Error (RMSE), which can be minimized by iteratively repeating the data. Thus, to reduce the RMSE value, a least squares optimization method is applied in the subsequent stages of data acquisition (Lesparre et al, 2016).…”

Recognition of boulder in granite deposit using integrated borehole and 2D electrical resistivity imaging for effective mine planning and development

“…The 2D ERT survey arrangement in the area of investigation comprised of six resistivity lines (R1, R2, R3, R4, R5, R6) at various locations having lengths of 400 m each, schematized in Figure 3. The subsurface apparent resistivity data was acquired by exploiting multichannel ABEM LS Terameter, connected to two multi cable system with 31 output each, allowing a total number of 62 stainless steel electrodes arrangement linearly (Lesparre et al, 2016;Longo et al, 2014;Persson et al, 2011). Prior to the resistivity data collection, the total number of electrodes (61 electrodes, one electrode as the center electrode) and spacing (5 m) between them was set, which remained constant throughout the survey.…”

Cross-Borehole ERT Monitoring System for CO2 Geological Storage: Laboratory Development and Validation

“…The physical models, i.e., governing equations, solved to obtain the parameters of electrical field are Maxwell's equations. According to Maxwell's equation and the quasi-static field assumption, the relationship between current density (J), conductivity (σ) and electric field intensity (E) in any point of the sensitive field generated by current electrode of ERT system is formulated as Equations ( 1) and ( 2) [24].…”

2D and 3D Modelling Electrical Resistivity Tomography (ERT) of Landslide Sliding and Weak Bedding Plane Along Mountain Road North Bengkulu-Lebong, Indonesia

“…The difference between the obtained and actual resistivity values is referred to as the Root Mean Square Error (RMSE), which can be minimized by iteratively repeating the data. Thus, to reduce the RMSE value, a least squares optimization method is applied in the subsequent stages of data acquisition (Lesparre et al, 2016).…”

Recognition of boulder in granite deposit using integrated borehole and 2D electrical resistivity imaging for effective mine planning and development

“…The 2D ERT survey arrangement in the area of investigation comprised of six resistivity lines (R1, R2, R3, R4, R5, R6) at various locations having lengths of 400 m each, schematized in Figure 3. The subsurface apparent resistivity data was acquired by exploiting multichannel ABEM LS Terameter, connected to two multi cable system with 31 output each, allowing a total number of 62 stainless steel electrodes arrangement linearly (Lesparre et al, 2016;Longo et al, 2014;Persson et al, 2011). Prior to the resistivity data collection, the total number of electrodes (61 electrodes, one electrode as the center electrode) and spacing (5 m) between them was set, which remained constant throughout the survey.…”

Cross-Borehole ERT Monitoring System for CO2 Geological Storage: Laboratory Development and Validation

“…The physical models, i.e., governing equations, solved to obtain the parameters of electrical field are Maxwell's equations. According to Maxwell's equation and the quasi-static field assumption, the relationship between current density (J), conductivity (σ) and electric field intensity (E) in any point of the sensitive field generated by current electrode of ERT system is formulated as Equations ( 1) and ( 2) [24].…”