Paper Info
Title
Innovative Surface-Borehole Transient Electromagnetic Method for Sensing the Coal Seam Roof Grouting Effect
Abstract
With the purpose of monitoring coal seam roof grouting, an innovative surface-borehole transient electromagnetic (TEM) method to compare the Earth resistivity distribution of the coal seam roof before grouting and after grouting is proposed. The TEM secondary field time-decay curve of the proposed surface-borehole TEM method is compared with that of the traditional surface TEM method. It is found that the time-decay curve of the former is very different from that of the latter. For the first time, forward modeling algorithm has been proposed to evaluate the TEM response characteristics of Earth, with an inversion algorithm developed to invert the measured data into resistivity distribution. A field work has been implemented with the customized equipment to evaluate the surface-borehole TEM method. In the field work, the proposed surface-borehole TEM measurement is performed twice, i.e., before and after the coal seam roof grouting. The analysis results demonstrated that the resistivity distribution had a distinct change near the depth of grouting with low resistivity distribution replaced by high resistivity distribution, which validates the effectiveness of the proposed surface-borehole TEM method.
Year
DOI
Venue
2022
10.1109/TGRS.2022.3149212
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
Keywords
DocType
Volume
Conductivity, Coal, Earth, Mathematical models, Electromagnetics, Transient analysis, Transmitters, Coal seam roof grouting, field work, numerical simulation, surface-borehole transient electromagnetic (TEM)
Journal
60
ISSN
Citations 
PageRank 
0196-2892
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Benyu Su100.68
Jingcun Yu200.34
Grzegorz M. Krolczyk300.68
Paolo Gardoni402.03
Zhixiong Li502.37