Local ground parameters of blasting vibration models for different geological structures at Mae Moh lignite mine, Thailand

• Main Authors: Vishnu Rachpech, Pitsanu Bunnaul, Pongsiri Julapong, Thanunyada Walthongthanawut
• Format: Article
• Language: English
• Published: Prince of Songkla University 2014-02-01
• Series: Songklanakarin Journal of Science and Technology (SJST)
• Subjects: local ground parameters; geological structure; blasting vibration; scaled distance; Mae Moh
• Online Access: http://rdo.psu.ac.th/sjstweb/journal/36-1/36-1-12.pdf

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.