Results 61 to 70 of about 292 (159)
Meitian dizhi yu kantanObjectiveThe observational data derived using the surface-borehole transient electromagnetic (TEM) method tend to feature complex curve morphologies, a problem posing significant challenges to data processing and interpretation.
Jianhui LI +4 more
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Meitian dizhi yu kantanBackgroundThe advance detection of underground concealed water hazards in coal mines is crucial to ensuring the safe and efficient roadway tunneling. The borehole transient electromagnetic (TEM) method allows for long-distance advance detection. However,
Tao FAN +7 more
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The surface-borehole transient electromagnetic method exhibits significant advantages in identifying deep targets, as its closer distance to subsurface targets results in more pronounced effective anomalies when compared to surface-based techniques.
Wanting Ma, Xianxiang Wang
core +1 more source
Meitian dizhi yu kantanObjective and MethodDuring the rapid excavation process using shield tunneling machines in coal mines, the advance detection of concealed geological anomalies encounters challenges of limited space and insufficient accuracy.
Chao CHEN, Ping LI, Wei LI, Rong WEI
doaj +1 more source
Three-Dimensional Borehole–Surface TEM Forward Modeling with a Time-Parallel Method
Applied SciencesThe three-dimensional borehole-to-surface transient electromagnetic (BSTEM) method plays a critical role in resolving subsurface conductivity structures under complex geological conditions.
Sihao Wang, Hui Cao, Ruolong Ma
doaj +1 more source
A research on three-dimensional response features of borehole electromagnetic method [PDF]
, 2013 The borehole transient electromagnetic (BHTEM) is a promising exploration tool for searching deep deposits. To increase the effectiveness of fieldwork, we studied the main features of responses BHTEM and quantified the change in BHTEM responses according
Dai, Xueping
core
Meitian dizhi yu kantanBackground Borehole geophysical prospecting technology for coal mines integrates the advantages of both drilling and geophysical prospecting. Accordingly, multiple critical advances have been achieved in its applications to the technologies and equipment
Ping LI +6 more
doaj +1 more source
International audienceSeawater intrusion into onshore aquifers represents a significant environmental threat worldwide especially in this new era of climate change and sea water rise.
Wang, Wei +7 more
core +1 more source
, 2010 An airborne transient electromagnetic (TEM) survey was completed in the Upper San Pedro Basin in southeastern Arizona to map resistivity distributions within the alluvial aquifer. This investigation evaluated the utility of 1D vertical resistivity models
D. R. Pool +3 more
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On mapping seafloor mineral deposits with central loop transient electromagnetics [PDF]
, 2012 Electromagnetic methods are commonly employed in exploration for land-based mineral deposits. A suite of airborne, land, and borehole electromagnetic techniques consisting of different coil and dipole configurations have been developed over the last few ...
Jegen, Marion +2 more
core +1 more source