Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
National Program for Inspection of Non-Federal Dams. Leesville Pond Dam (MA 00141), Blackstone River Basin, Worcester, Massachusetts. Phase I Inspection Report
Leesville Pond Dam is an earthfill dam with a stone masonry spillway section. The dam was originally constructed in about 1830 and has undergone reconstruction and numerous modifications. The dam is about 220 feet long, 15 feet high with an 83.6-foot-long spillway. The earth embankment has a wood plank core wall. The outlet controls consists of two inoperable wooden slide gates. There are no flashboards on the spillway. Based upon the visual inspection at the site and a review of the engineering data available, there are areas of concern which must be corrected to assure the continued performance of this dam. Generally, the dam is considered to be in fair condition. However, there are several visible signs of distress which may indicate a potential hazard at this site. These are as follows: seepage at the north spillway abutment, slumping and erosion on the upstream face of the dam, inoperable slide gates, leakage around the slide gates, erosion of the earthfill abutment slopes, minor spalling and cracking of the concrete in the discharge channel walls, trees and brush on the dam, and accumulation of debris in the spillway channel. Hydraulic analyses indicate that the existing spillway without flashboards can discharge a flow of 1,594 cubic feet per second (cfs) at Elevation (El) 488.3 which is the low area along the top of the dam. An outflow test flood of 8,600 cfs would overtop the north abutment of the spillway, which is the lowest point on the main dam, by about 5.3 feet. The remainder of the dam would be overtopped by about 3 feet. The spillway can discharge only 19 percent of the test flood and is therefore inadequate.
National Program for Inspection of Non-Federal Dams. Leesville Pond Dam (MA 00141), Blackstone River Basin, Worcester, Massachusetts. Phase I Inspection Report
Leesville Pond Dam is an earthfill dam with a stone masonry spillway section. The dam was originally constructed in about 1830 and has undergone reconstruction and numerous modifications. The dam is about 220 feet long, 15 feet high with an 83.6-foot-long spillway. The earth embankment has a wood plank core wall. The outlet controls consists of two inoperable wooden slide gates. There are no flashboards on the spillway. Based upon the visual inspection at the site and a review of the engineering data available, there are areas of concern which must be corrected to assure the continued performance of this dam. Generally, the dam is considered to be in fair condition. However, there are several visible signs of distress which may indicate a potential hazard at this site. These are as follows: seepage at the north spillway abutment, slumping and erosion on the upstream face of the dam, inoperable slide gates, leakage around the slide gates, erosion of the earthfill abutment slopes, minor spalling and cracking of the concrete in the discharge channel walls, trees and brush on the dam, and accumulation of debris in the spillway channel. Hydraulic analyses indicate that the existing spillway without flashboards can discharge a flow of 1,594 cubic feet per second (cfs) at Elevation (El) 488.3 which is the low area along the top of the dam. An outflow test flood of 8,600 cfs would overtop the north abutment of the spillway, which is the lowest point on the main dam, by about 5.3 feet. The remainder of the dam would be overtopped by about 3 feet. The spillway can discharge only 19 percent of the test flood and is therefore inadequate.
National Program for Inspection of Non-Federal Dams. Leesville Pond Dam (MA 00141), Blackstone River Basin, Worcester, Massachusetts. Phase I Inspection Report
1978
89 pages
Report
Keine Angabe
Englisch