Figure 12. Idealization of ice jam evolution with time.
The first analysis was done by the Canadian R.J. Kennedy (1958), who was inter-
ested in the forces exerted on a boom by a pulpwood jam. To determine those forces,
he developed the following relation
+ τiB - 2k0λF = 0
width of the holding area
shear stress on the underside due to water flow
coefficient of lateral thrust
coefficient of friction of the pulpwood against the shore boundary
force per unit width acting in the downstream direction (x-direction).
If there exists a force f1 exerted by the water impinging on the upstream end of the
accumulation, then eq 1 can be integrated to obtain the force at any location x (mea-
sured from the upstream end of the accumulation), i.e.
+ f1 -
exp B .