Simulation and application research on the advanced detection by the dipole-dipole device of the DC method in the excavation roadway
In order to study the effect of mine DC method dipole-dipole device in advanced detection of excavation roadway.In this paper,based on the principle of mine DC method advanced detection,verifies the reliability and feasibility of COMSOL Multiphysics research on DC method advanced detection by analyzing the error between the simulated value and the theoretical value of COMSOL Multiphysics point power forward model.Establish a three-dimensional geoelectric model of roadway advanced detection,through forward modeling,analyze the impact of roadway cavities on data,and compare the detection effects of pole-pole,pole-dipole and dipole-dipole devices,as well as their response characteristics to low resistivity bodies at different distances.Based on the principle of similarity,the physical simulation experiment is constructed,the contour map of the apparent resistivity of the advanced detection is drawn,and the actual detection effect of the dipole-dipole device on the different shape and distance anomaly body is studied The research results show that the dipole-dipole device can have abnormal response to the low-resistance body,and the detection data can accurately identify the horizontal position lateral position of the abnormal body after eliminating the influence of the tunnel cavity;In addition,the dipole-dipole device has better advanced detection effect on spherical anomaly body than plate anomaly body;Through the application of the dipole-dipole device to the advanced detection in the engineering example,the drilling verification is consistent with the detection effect,which shows that the technology has strong practicability and popularization.
Advanced detection of roadwayDC dipole-dipole deviceForward modelingPhysical simulationAbnormal response
万方数据
维普
