Vishnu Rachpech, Pitsanu Bunnaul, Pongsiri Julapong, and Thanunyada Walthongthanawut

pp. 89 - 95

Abstract

This study was carried out at Mae Moh lignite mine, Lampang Province, Thailand. Vibration data were recorded in
different directions: SE-pit to Huai King Village, SE-pit to Hang Hung Village, SE-pit to PR building and C-pit to SE-pit. More
than hundred data points were collected and used for the formulation of ground parameters equations according to scale
distance model for each direction. It was observed that geological structures might affect the propagation of the vibration
wave. The formulated equations according to scale distance model are different for different geological structures. Three
different structures of ground involved in this study were overburden (shale and claystone), lignite seam and combination
of overburden and lignite seam. Formulated equations for vibration model in these media were given and discussed.