Response and Test of Whole Space Transient Electromagnetic Field in Mine Goaf Water

Abstract:

The transient electromagnetic method (TEM) has sensitive characteristics of low resistivity of water containing. The equivalent plane method based on whole space theory is used in coal mine goaf water TEM detecting. The mine goaf water was forward simulation. The geoelectric model of mine goaf water was equivalented to low resistivity layer thickness. The geoelectric model was forward calculated, and it was differential imaged. Then it found the apparent longitudinal conductance differential imaging reflect the most sensitive. The field experiment was conducted in two mine goaf water in Xiezhuang coal mine. The central loop device was selected as working device. The launch wire frame is length of 2m and 8 turns. A receiving device is receiving probe and the effective area is 212m². The Water distribution range of goaf water in-300 of the seven mining area in front of retaining wall is large, and the water body is deep.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 1136-1139
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.1136
• Online since: August 2013
• Authors: Yi Guo Xue*, Shu Cai Li, Mao Xin Su, Hai Yan Li, Hao Tian
• Keywords: Equivalent Conductive Plane Method, Field Test, Mine Goaf Water, Wholetransient Electromagnetic Field

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