Intelligent transient electromagnetic detection and real-time early warning method for tunneling roadway

Abstract

The invention discloses an intelligent transient electromagnetic detection and real-time early warning method for a tunneling roadway; the method comprises the following steps of: detecting the head-on position and two side walls of a current roadway in an intermittent period by adopting portable transient electromagnetic detection equipment, and transmitting detection data to a computer on the ground; generating an apparent resistivity cross-section diagram obtained by the detection; carrying out dangerous area division on the apparent resistivity cross-section diagram according to the distribution condition of the apparent resistivity value R; when the heading machine enters the intermittent period again, repeating the process at the moment, obtaining an apparent resistivity cross-section diagram detected this time, enabling the apparent resistivity cross-section diagram detected this time and an apparent resistivity cross-section diagram obtained last time to be subjected to synthetic analysis, and finally obtaining a synthesized apparent resistivity cross-section diagram; and repeating the steps for many times, and finally importing the apparent resistivity cross-section diagram obtained in each intermittent period and the danger level of each divided area into the corresponding position of the model for real-time display and updating. Therefore, real-time early warning is carried out on the abnormal geological structure in front of the head-on part in the roadway tunneling process.

Description

technical field [0001] The invention relates to a mine geophysical detection method, in particular to a tunneling roadway intelligent transient electromagnetic detection and real-time early warning method. Background technique [0002] In the coal mines currently in use, in order to ensure the safety of roadway excavation and prevent the occurrence of water damage accidents, it is necessary to do a good job in the advance detection of the roadway head. Mine transient electromagnetic method is widely used in coal mine excavation advance detection process because of its sensitivity to low-resistance body response and the advantages of light and high-efficiency multi-turn small loop device. [0003] For the existing transient electromagnetic advanced detection technology, the transient electromagnetic advanced detection requires geophysical personnel to carry equipment into the head for detection. After each detection is completed, the data is transmitted to the ground, and the...

AI Technical Summary

Problems solved by technology

As for the head-on that is being excavated, as the roadway continues to be excavated, geophysical personnel need to repeatedly enter the site, which is time-consuming and laborious, which seriously affects the excavation efficiency

In addition, each detection interprets a range of nearly 100 meters, and the results of multiple detections lack joint comparative analysis, resulting in poor correlation between different detection results

Moreover, the interpretation and analysis results cannot be fed back to the site in real time, which ultimately leads to poor guidance on the direction of roadway excavation in actual work

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