Accession Number:

ADA014886

Title:

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

Descriptive Note:

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s):

Report Date:

1975-09-01

Pagination or Media Count:

17.0

Abstract:

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.

Subject Categories:

  • Snow, Ice and Permafrost
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE