Three-dimensional detection method for use before exploitation of working surface coal bed
A three-dimensional detection, working face technology, applied in electromagnetic wave detection, climate sustainability, water resources assessment, etc., can solve problems such as accidents, avoid accidents, and ensure the safety of life and property.
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[0018] The working face coal seam pre-mining three-dimensional detection method of the present invention, concrete steps are as follows:
[0019] (1) Use radio wave tunnel perspective technology to detect whether there is hidden geological structure in the coal seam layer of the working face, and determine its specific location and range. The distance between the tunnel perspective receiving points is 10 meters, the distance between the transmitting points is less than or equal to 50 meters, and the length of the receiving tunnel corresponding to a single point of transmitting point is not less than 150 meters.
[0020] (2) Use amplitude-frequency electroscopic technology to detect whether there is a hidden water-conducting structure within the scope of the bottom or roof of the working face, and determine its specific location and range.
[0021] (3) Use direct current sounding technology to detect and evaluate whether there is a hidden water-conducting structure under the fl...
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