Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
National Dam Safety Program. Sayersbrook Lake Dam (MO 30112), Mississippi - Kaskaskia - St. Louis Basin, Washington County, Missouri. Phase I Inspection Report
Based on a visual inspection, the present general physical conditions of the dam is considered to be satisfactory; however, the following deficiencies were noticed during the inspection and are considered to have an adverse effect on the overall safety and future operation of the dam: A few small trees and patches of brush that may conceal animal burrows exist on the downstream slope of the dam. Erosion of the downstream slope, believed to be due to drainage of storm runoff, has occurred at the intersection of the embankment and the left abutment. The emergency spillway is located within the embankment and has only a grass cover to protect it from erosion by lake outflow. A grass covered slope in a fill section is not considered adequate to prevent erosion by spillway flow. Erosion of this section could result in failure of the dam. Lake water was noticed emerging in the bottom of the spillway channel at a point approximately 10 feet downstream of the concrete weir. It appears that a seepage path may have developed beneath the spillway wall. A heavy growth of small willow trees and brush exists in the spillway exit channel. This growth will restrict spillway flow and could result in overflow of the channel that may produce erosion of the adjacent embankment. Erosion of the embankment may impair the stability of the dam.
National Dam Safety Program. Sayersbrook Lake Dam (MO 30112), Mississippi - Kaskaskia - St. Louis Basin, Washington County, Missouri. Phase I Inspection Report
Based on a visual inspection, the present general physical conditions of the dam is considered to be satisfactory; however, the following deficiencies were noticed during the inspection and are considered to have an adverse effect on the overall safety and future operation of the dam: A few small trees and patches of brush that may conceal animal burrows exist on the downstream slope of the dam. Erosion of the downstream slope, believed to be due to drainage of storm runoff, has occurred at the intersection of the embankment and the left abutment. The emergency spillway is located within the embankment and has only a grass cover to protect it from erosion by lake outflow. A grass covered slope in a fill section is not considered adequate to prevent erosion by spillway flow. Erosion of this section could result in failure of the dam. Lake water was noticed emerging in the bottom of the spillway channel at a point approximately 10 feet downstream of the concrete weir. It appears that a seepage path may have developed beneath the spillway wall. A heavy growth of small willow trees and brush exists in the spillway exit channel. This growth will restrict spillway flow and could result in overflow of the channel that may produce erosion of the adjacent embankment. Erosion of the embankment may impair the stability of the dam.
National Dam Safety Program. Sayersbrook Lake Dam (MO 30112), Mississippi - Kaskaskia - St. Louis Basin, Washington County, Missouri. Phase I Inspection Report
1978
51 pages
Report
Keine Angabe
Englisch