An Intelligent Transient Electromagnetic Detection and Real-time Early Warning Method for Driving Roadway

Abstract

The invention discloses an intelligent transient electromagnetic detection and real-time early warning method for excavating tunnels. Portable transient electromagnetic detection equipment is used to detect the current head position and sides of the tunnel during the intermittent period, and the detection data is transmitted to the ground. Then generate the apparent resistivity section map obtained by this detection; divide the apparent resistivity section map into dangerous areas according to the distribution of the apparent resistivity value R; when the roadheader enters the intermittent period again, repeat the above process at this time, Obtain the apparent resistivity section diagram of this detection, synthesize and analyze the apparent resistivity section diagram of this time and the last obtained apparent resistivity section diagram, and finally obtain the synthesized apparent resistivity section diagram; repeat this many times, and finally Import the apparent resistivity cross-section map 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 update; thus, real-time early warning of abnormal geological structures ahead during the roadway excavation 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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