An experimental study on the influence of step topographies in strip mines on the exploration performed using the high-density resistivity method
The stability assessment of strip mine slopes is a fundamental means to prevent slope accidents.To investigate the influence of step topographies on the exploration using the high-density resistivity method on strip mine steps,this study conducted flume experi-ments for simulation using similar materials to explore the current field distribution in the profile to be surveyed.The experimental re-sults show that:(1)The shallow positions near the upper and lower slope lines and the breadth line of the cleaning berm exhibited high current densities and even current distributions;(2)The middle positions manifested sharply changed current densities,with their con-tours akin to the step topography;(3)The deep positions displayed low current densities and tardy current changes;(4)A significant current gathering effect was observed near the slope bottom line on the profile;(5)Compared to flat topographies,step topographies exhibited high current densities and uneven current distributions.This suggests that in the exploration using the high-density resistivity method,step topographies in strip mines can cause abnormal inversion results for the middle positions and positions near the slope bot-tom line.
万方数据
维普
