Microseismic monitoring of a longwall coal mine. Volume I-- microseismic field studies.
Kimble-EJ; Mowrey-GL; Hardy-HR
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, G0144013, 1978 Jan; :1-319
Volume I of this three-volume report describes the detailed aspects of the microseismic field study conducted at a longwall coal mine at Greenwich Colleries, Barnesboro, Pennsylvania. The objectives of the study were to evaluate the feasibility of detecting microseismic activity originating from longwall mining operations using an approximately planar, near-surface, geophone array installed above the longwall and to attempt to locate sources of the various microseismic events.The investigation proved that using the techniques developed, it is possible to detect microseismic events at depths of more than 400 feet and at horizontal distances in excess of 800 feet from the source.
CP; Final Grant Report
NTIS Accession No.
OFR 30(1)-80; Grant-Number-G0144013
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, G0144013
Pennsylvania State University