According to the goaf detection method based on transient electromagnetic and
seismic wave field joint inversion,
data acquisition and joint inversion are carried out on the goaf through the combination of the transient electromagnetic detection
system and the reflection seismic detection
system, the complementary advantages of the two detection methods are played, the bottlenecks of a single method in the aspects of resolution and
signal-to-
noise ratio are broken through, and the goaf detection method based on transient electromagnetic and
seismic wave field joint inversion is realized. Fine characterization of the structure, the
physical property and the stability of the goaf is realized; a
machine learning classification
algorithm is introduced to analyze a goaf multi-attribute
feature data set, and intelligent discrimination of the type, scale and stability of the goaf under complex geological conditions is realized; establishing a quantitative response relationship between goaf
physical property parameters and goaf electrical and elastic difference characteristic parameters, constructing a goaf transient electromagnetic and
seismic wave field joint forward modeling numerical model, and constructing an electromagnetic-seismic joint inversion objective function; and calculating and solving to obtain goaf resistivity, seismic
wave velocity three-dimensional distribution and uncertainty quantitative evaluation results, and reducing blind areas of goaf judgment.