introduction and short method of river training

2. ROLL# 935
B.Tech, 5TH Semester,

3. AN IMAGE OF A RIVER

4. PURPOSE
METHOD
REVER TRAINING

5. River training includes all such measures as are taken for
controlling and regulating river flow and river configuration. . A
river can also be trained by diverting its flow into a secondary
channel or by executing artificial cutoffs on the main river so as
to cause reduction in flood levels.

6. Permanent Alignment
Flood Protection
Protection of Works
Bank Protection

7. Sediment Control
Navigation
Sand Exclusion

8. Marginal embankment or Levees
Guide bank
Spurs or Groyn
Pitching
Training without embankment

9. . A levee (also known as an embankment, is an embankment
running parallel (or nearly so) to the river and is constructed to
protect the area on one side of it from flooding. The method of
constructing levees on one or both sides of a river to contain the
flood within the leveed portion is the oldest and most commonly
used method of flood control. The alignment of levees for a river
is decided by the location of important cities, industries, and
other areas along the river which need to be protected against
floods. Closely-spaced levees will be very high and, hence,
massive and uneconomic. .

10. AN IMAGE OF LEVEES AT THE RIVER BANK

11. Rivers in flood plains submerge very large
areas during flood periods. Naturally when
some structure is to be constructed across
such a river (for example, bridge, weir, etc.),
it is very expensive to construct the work
spanning whole width of the river. To
economies some training work may be
constructed to confine the flow of water
within a reasonable waterway.

12. A DRAWING OF A GUIDE BANK

13. G U I D E B A N K

14. Spur are the embankment type structures,
constructed transverse to the river flow
to protect the bank by deflecting the
current away from the bank. As the
water is unable to take a sharp
embayment, the bank gets protected.

15. A N I M A G E O F A S P U R

16. S p u r s

17. Tee Spur
Hockey Spur

18. River training methods mainly depends upon the type
of the river, its regime and the flow characteristics of
the river. So the methods to control the river erosion
varies from place to place.