This research shows that worst-case methane-air detonation loading on coal mine seals could be more severe than the design loads required by federal regulations, and therefore mine seals should be designed with sufficient ductility beyond the elastic regime. For this study, reinforced concrete mine seals were designed according to traditional protective structural design methods to meet the federal regulation requirements, and then the response to worst-case loads was analyzed in a single-degree- of-freedom model. Coal mine seals designed to resist the regulation loads elastically experienced support rotations up to 4.27 deg when analyzed with the worst-case loads. The analysis showed that coal mine seals designed to satisfy the federal regulations can survive worst-case methane-air detonations if they have sufficient ductility, but will undergo permanent, inelastic deformation.
|Advisor:||Horstemeyer, Mark F.|
|Commitee:||Hammi, Youssef, McMahon, Gordon W.|
|School:||Mississippi State University|
|School Location:||United States -- Mississippi|
|Source:||MAI 55/04M(E), Masters Abstracts International|
|Subjects:||Civil engineering, Mechanical engineering, Mining engineering|
|Keywords:||Coal, Concrete, Explosion, Methane, Mine, Seal|
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