Guided Modes in Coal Seams and Their Application to Underground Seismic Surveying

Autor:	P.E. Lagasse, I.M. Mason
Rok vydání:	1975
Předmět:	Mining engineering business.industry Coal mining Coal Dispersion (water waves) business Optoacoustic imaging Geology Communication channel Pulse propagation
Zdroj:	1975 Ultrasonics Symposium.
DOI:	10.1109/ultsym.1975.196466
Popis:	Underground seismic surveying of coal seams can be performed using the channel waves The roadway modes, i.e. the modes guided by the free face of Detailed calculations of the channel modes and the guided by the low velocity coal layer. the coal seam, are analysed. The knowledge of channel modes and roadway modes are shown to be funda- mental to the interpretation of any survey data. pulse propagation in a particular coal seam are presented.
Databáze:	OpenAIRE
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