Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Developing Geological Structural Criteria for Predicting Unstable Mine Roof Rocks
This study was designed to investigate roof falls in room-and-pillar drift coal mines and to determine geologic methods for predicting unstable roof conditions. The study area was located in Harlan County, Ky., and the Bailey Creek (Harlan coal bed) and Highsplint (Darby coal bed) mines were selected for study. Correlations were made laterally between surface outcrops and within the mines using lithologic and trend analysis criteria. Lithologic criteria compared cyclic changes in roof strata. Structure contour and isopach maps were used to project axial trends of the sandstone roof. A roof-fall zone was examined using 10 NX cores taken from the roof and included lithologic, petrographic, and clay mineral studies. Computer programs were used in trend analysis studies.
Developing Geological Structural Criteria for Predicting Unstable Mine Roof Rocks
This study was designed to investigate roof falls in room-and-pillar drift coal mines and to determine geologic methods for predicting unstable roof conditions. The study area was located in Harlan County, Ky., and the Bailey Creek (Harlan coal bed) and Highsplint (Darby coal bed) mines were selected for study. Correlations were made laterally between surface outcrops and within the mines using lithologic and trend analysis criteria. Lithologic criteria compared cyclic changes in roof strata. Structure contour and isopach maps were used to project axial trends of the sandstone roof. A roof-fall zone was examined using 10 NX cores taken from the roof and included lithologic, petrographic, and clay mineral studies. Computer programs were used in trend analysis studies.
Developing Geological Structural Criteria for Predicting Unstable Mine Roof Rocks
D. K. Hylbert (Autor:in)
1977
249 pages
Report
Keine Angabe
Englisch
Mineral Industries , Soil & Rock Mechanics , Coal mining , Room and pillar mining , Rock mechanics , Roofs , Safety , Mining engineering , Subsidence , Petrography , Clay minerals , Drill care analysis , Stratigraphy , Geology , Forecasting , Stability , Lithology , Site surveys , Kentucky , Mine safety , Computer aided analysis , Harlan County(Kentucky)
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