Call number:
ZSP-201-83/30
In:
CRREL Report, 83-30
Description / Table of Contents:
Ice sheets are formed and retained in several ways in nature, and an understanding of these factors is needed before most structures can be successfully applied. Many ice sheet retention structures float and are somewhat flexible; others are fixed and rigid or semirigid. An example of the former is the Lake Erie ice boom and of the latter, the Montreal ice control structure. Ice sheet retention technology is changing. The use of timber cribs is gradually but not totally giving way to sheet steel pilings and concrete cells. New structures and applications are being tried but with caution. Ice-hydraulic analyses are helpful in predicting the effects of structures and channel modifications on ice cover formation and retention. Often, varying the flow rate in a particular system at the proper time will make the difference between whether a structure will or will not retain ice. The structure, however, invariably adds reliability to the sheet ice retention process.
Type of Medium:
Series available for loan
Pages:
iv, 39 Seiten
,
Illustrationen
,
1 Beilage
Series Statement:
CRREL Report 83-30
URL:
https://apps.dtic.mil/docs/citations/ADA138030
URL:
https://hdl.handle.net/11681/9289
Language:
English
Note:
Contents
Abstract
Preface
Introduction
Natural ice sheets
Choosing an ice control structure
Flexible structures
Ice booms
Frazil collector lines
Fence booms
Rigid or semirigid structures
Pier-mounted booms
Stone groins
Artificial islands
Removable gravity structures
Timber cribs
Weirs
Pilings and dolphins
Structures built for other purposes
Hydroelectric dams
Wicket dams
Light piers and towers
Bridge piers
Breakwaters
Ice control not using Structures
Channel improvements
Ice sheet tying
Ice sheet bridges
Conclusions
Literature cited
Appendix A: Ice control structure
Location:
AWI Archive
Branch Library:
AWI Library