Abstract:Water-rich anormal bodies such as faults,collapsed columns and other structures in coalmines pose a serious threat to the safety of coalmine operations.To determine this kind of anormal bodies is very helpful for mining operations.Seismic attributes can identify anormal bodies,but it's difficult to tell the difference between water-rich anormal bodies or dry anormal bodies.So the joint use of seismic attributes and transient electromagnetic data is proposed to tell the difference.The resistivity in structures shows rock fragmentation and rock water-content.Water-rich faults and water-rich collapsed columns have much smaller resistivity than water-poor faults and water-poor collapsed columns.This geophysical observation obtained from the transient electromagnetic method can be used to detect water-rich anormal bodies in coalmines.In this paper,we demonstrate an example in a coalmine in China,in which water-rich anormal bodies are clearly detected based on the joint use of seismic attributes and transient electromagnetic data.
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