Special Issue on Advances in Soil Pollution and the Geotechnical Environment

Bai, Bing

doi:10.3390/app122312000

Cited by 1 publication

(1 citation statement)

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“…Liu et al (2012) predetermine the low resolution of processing and inversion results of this method, thereby critically hindering the suppression of noise interference needed to meet the requirements of data interpretation. The seismic exploration method provides high resolution, but the goaf site environments are generally complex, the exploration depth of lowenergy sources is limited, and the cost of high-energy sources is high (Wang, et al, 1998;Ezersky, 2011;Wei et al, 2014;Bai et al, 2019;Bai, 2022). Ground penetrating radar is highly effective and accurate for interpreting the results, but its detection depth is limited under the technical limitations of the method itself, for example, the transmitting power is relatively small compared to the MT method.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of water-bearing coal goaf using ground-borehole TEM—a case study of Tongxin Coal Mine, Shanxi Provice, China

Yang,

Peng,

Shan

et al. 2024

Front. Earth Sci.

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Transient electromagnetic method (TEM) is widely used in coalfield hydrogeological exploration and goaf investigation. However, given the limitations of the method, the vertical resolution of ground TEM is somewhat low for effectively detecting water-bearing coal goaf. Compared with ground TEM, ground-borehole TEM is characterized by a relatively better ability for detecting low-resistivity target bodies. In this study, a low-resistivity thin plate model was established, and the ground-borehole TEM electromagnetic responses of different points (within and without of the plate) were numerically simulated. We considered an exploration project in Datong City (Shanxi Province, China) as a study case, to conduct the field investigation, examine the characteristics of ground-borehole TEM electromagnetic responses under different situations, and validate the numerical model as well, including (a) water-bearing coal goaf and (b) solid coal. The result showed that, (a) the longer the sampling time is, the weaker the electromagnetic response of ground-borehole TEM will be; (2) ground-borehole TEM stands out with a high vertical resolution for water-bearing coal goaf; (c) the extreme points of the Z component and the polarity changing points of the X and Y components can indicate the interface where the physical properties alternated.

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Section: Introductionmentioning

confidence: 99%