Design Factors for River Ice Booms Analyzed (Issleovanie Ledozashchitnykh Zapanei)

• Main Author: Latyshenkov,A. M.
• Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
• Format: Text
• Language: English
• Published: 1975
• Subjects: Snow; Ice and Permafrost; Civil Engineering; *RIVERS; *ICE PREVENTION; STRESSES; VELOCITY; MATHEMATICAL MODELS; USSR; THICKNESS; SHIPS; WATER FLOW; EXPERIMENTAL DATA; DEPTH; ICE; PRESSURE; PROTECTION; TRANSLATIONS; BATTLES; FRICTION; FLOATING BODIES; BOOMS(EQUIPMENT); SIBERIA; HARBOR MODELS; MECHANICAL CABLES; *Ice booms; River ice; Ice cover; Ice; permafrost; Siberia
• Online Access: http://www.dtic.mil/docs/citations/ADA014886; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA014886

Model studies were made to determine hydraulic characteristics of structures for protecting ships wintering in rivers under conditions similar to those observed in European and Siberian rivers (ice-cover thickness up to 1.8m. and river depth to 12m.). The experiments are described, and data are mathematically analyzed. Formulas and graphs for calculating the stresses as a function of ice-cover thickness, flow speed, and width and depth of the river are suggested. The ice pressure on protective booms in a stream wider than 30 m was found to increase 85-90% due to the friction between the lower ice surface and flowing water. The friction coefficient is proportional to the ratio of ice thickness to flow depth. Trans. of Gidrotekhnicheskoe Stroitel'stvo (USSR) v15 n4 p13-19 1946.