scholarly journals Research on application of mine transient electromagnetic method in detecting collapse column

2021 ◽  
Vol 2076 (1) ◽  
pp. 012100
Author(s):  
Hailong Du ◽  
Wen Li ◽  
Jinsong An ◽  
Lin Zhang ◽  
Weiye Zhao ◽  
...  
Keyword(s):  
Electromagnetic Method ◽  
Shanxi Province ◽  
Transient Electromagnetic Method ◽  
Transient Electromagnetic ◽  
Working Face ◽  
Geological Conditions ◽  
Collapse Column ◽  
Control Work ◽  
Research On Application ◽  
Mine Transient Electromagnetic Method

Abstract The transient electromagnetic detection has been widely applied to mine roadway excavation engineering. In order to figure out the front geological conditions of roadway excavation, the application of mine transient electromagnetic method (TEM) in detecting collapse column was conducted in this paper by taking the TEM-based advanced detection of 53152 working face in a mine located in Jincheng, Shanxi Province as an example. The results showed that if TEM is applied, geological structures like water-free collapse column could be largely delineated. Besides, by combining the interference source of detection environment and related geological data nearby the detection site, ‘false abnormalities’ could be effectively eliminated, thus providing the reference basis for the water prevention and control work of mines.

scholarly journals Analysis of response characteristics of comprehensive geophysical prospecting technology in concealed water-bearing structures

2021 ◽  
Vol 2076 (1) ◽  
pp. 012090
Author(s):  
Jinsong An ◽  
Zhichao Ma ◽  
Hailong Du ◽  
Wen Li ◽  
Weiye Zhao ◽  
...  
Keyword(s):  
Direct Current ◽  
Current Method ◽  
Electromagnetic Method ◽  
Transient Electromagnetic Method ◽  
Geophysical Prospecting ◽  
Low Resistance ◽  
Mining Areas ◽  
Illegal Mining ◽  
Transient Electromagnetic ◽  
Mine Transient Electromagnetic Method

Abstract The mine transient electromagnetic method and the mine direct current method were used to detect the abundant water at 1,144 m ahead of the track roadway on the 9101 working face in the Chaoyang Coal Mine. Low-resistance abnormal areas indicated by both methods were analyzed comprehensively for early warning of water hazards. The results showed that two low-resistance abnormal areas were indicated by the mine transient electromagnetic method and the existence of a low-resistance abnormal area was indicated by the direct current method. Both methods showed the existence of a low-resistance abnormal area ahead, delineating possible illegal mining areas of old kilns ahead, which were verified by drilling. The methods can indicate the direction for drilling. The case shows that the combination of different geophysical prospecting methods can eliminate their limitations and that comprehensive detection can reduce omissions, which has a good guiding significance for safe mine excavation.

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