Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
National Dam Inspection Program. Shohola Marsh Dam (NDI-PA 00412, PA DER 52-158), Delaware River Basin, Shohola Creek, Pike County, Pennsylvania. Phase I Inspection Report
Shohola Marsh Dam is a concrete gravity structure which impounds a 1137 acre lake at normal pool elevation. Construction of the dam was completed in July, 1968. Shohola Marsh Reservoir is owned by the Pennsylvania Game Commission and is used as a wildlife habitat. Based on visual observations made during the field inspection, the dam appears to be in good condition. The dam is classified as a 'high' hazard structure which indicates there is potential for extensive property damage and possible loss of life in the event of a dam failure. Examination of the results of the hydrologic and hydraulic analyses indicates that the existing spillway system is able to pass approximately 63 percent of the Probable Maximum Flood (PMF) without being overtopped. It appears the spillways are designed for heads less than those associated with the PMF. Negative pressures on the downstream face of the spillway would develop for discharges exceeding approximately 30 percent of the PMF. For discharges in excess of 50 percent of the PMF, cavitation may occur. Stability analyses of the spillway system and the non-overflow portion of the dam reveal that the resultant of forces falls outside the middle third of the base for loadings associated with 1.) Normal and 5 kips per square foot (ksf) ice load, 2.) 1/2 PMF, 3.) Water to the top of dam, 4.) PMF. Further detailed stability, hydrologic and hydraulic studies should be performed to determine if remedial measures are necessary at this time. (Author)
National Dam Inspection Program. Shohola Marsh Dam (NDI-PA 00412, PA DER 52-158), Delaware River Basin, Shohola Creek, Pike County, Pennsylvania. Phase I Inspection Report
Shohola Marsh Dam is a concrete gravity structure which impounds a 1137 acre lake at normal pool elevation. Construction of the dam was completed in July, 1968. Shohola Marsh Reservoir is owned by the Pennsylvania Game Commission and is used as a wildlife habitat. Based on visual observations made during the field inspection, the dam appears to be in good condition. The dam is classified as a 'high' hazard structure which indicates there is potential for extensive property damage and possible loss of life in the event of a dam failure. Examination of the results of the hydrologic and hydraulic analyses indicates that the existing spillway system is able to pass approximately 63 percent of the Probable Maximum Flood (PMF) without being overtopped. It appears the spillways are designed for heads less than those associated with the PMF. Negative pressures on the downstream face of the spillway would develop for discharges exceeding approximately 30 percent of the PMF. For discharges in excess of 50 percent of the PMF, cavitation may occur. Stability analyses of the spillway system and the non-overflow portion of the dam reveal that the resultant of forces falls outside the middle third of the base for loadings associated with 1.) Normal and 5 kips per square foot (ksf) ice load, 2.) 1/2 PMF, 3.) Water to the top of dam, 4.) PMF. Further detailed stability, hydrologic and hydraulic studies should be performed to determine if remedial measures are necessary at this time. (Author)
National Dam Inspection Program. Shohola Marsh Dam (NDI-PA 00412, PA DER 52-158), Delaware River Basin, Shohola Creek, Pike County, Pennsylvania. Phase I Inspection Report
1979
89 pages
Report
Keine Angabe
Englisch