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CEERD-HN-N
(1110-2-1150a)
MEMORANDUM FOR Commander,
U.S. Army Engineer District, Nashville,
ATTN:
CELRN-EP-H
(Mr. Ben Rohrbach)
P.O.
Box 1070, Nashville, TN 37202-1070
SUBJECT: Progress Report, Model Study of Kentucky Lock and Dam,
Tennessee River
Progress During March 2001
1. A meeting was held on 7 March to demonstrate the model with the
cofferdam plans and discuss aspects of the cofferdam design with
representatives from U.S. Army Engineer Research and Development Center's
Coastal and Hydraulics Laboratory (CHL), your District (LRN), TVA, the
navigation industry, and members of the AE firms designing the cofferdam.
As a result of the demonstration of the up-bound navigation conditions
associated with the completed cofferdam plan and operation of the 300,000
cfs, 328.0 ft tailwater flow condition, CHL was requested to demonstrate
the navigation conditions that would result from installing the training
work on the west side of the Powerhouse Island developed for Plan B-2
(completed project with proposed 1,200-ft lock and 1,200-ft landward guide
wall installed). The training work was installed, demonstrated, and
appeared to provide improved navigation conditions.
2. During the presentations and discussions of the various aspects of
the cofferdam construction and the potential effects to navigation, the
representatives of the navigation industries agreed that the training work
developed for the completed project appears to provide navigation benefits
that would be beneficial throughout the construction of the project. The
LRN stated that this training work could be installed at almost any point
of the construction, especially if it is demonstrated that it would provide
navigation benefits. The LRN requested that CHL evaluate and document the
navigation conditions with the installation of the training work and the
cofferdam.
3. A request for additional funding to cover the costs of the evaluation
of the floating "camels" on the cofferdam float-in wall sections,
evaluation of navigation conditions with the cofferdam and the Powerhouse
Island training work, and "mothballing" the model to prepare it
for extended inactivity was sent to LRN on 8 March. We received additional
funding on 19 March.
4. In an e-mail message, dated 19 March 2001, you requested that we
evaluate navigation conditions with the complete cofferdam and the training
work at only 300,000 cfs, 328.0 TW, and after placement of both float-in
cofferdam wall segments with only the 100,000 cfs, 306.3 TW. These
evaluations were completed on 28 March. This completes all scheduled
testing.
5. During a telephone conversation on 22 March between Mr. Randy
McCollum of CHL and Mr. Don Getty of LRN and you, CHL was requested to
provide LRN the monthly charge required to maintain an inactive model. This
charge would be $1,286.00 per month.
Work Planned for April 2001
6. At present there is no additional work scheduled for the model. The
model will be prepared for extended inactivity.
7. Preparation of the final report will begin.
8. A list of updated milestones and their current status is enclosed. If
you have any questions regarding this project, please contact Mr. Randy
McCollum at (601) 634-2719
.
Encl
THOMAS W. RICHARDSON
Acting Director
Coastal and Hydraulics Laboratory
Model Study of Kentucky Lock
Schedule of Milestones
31 March 2001
| Milestone |
Scheduled Completion |
Actual or Percent
Complete |
| Model Designed, Constructed |
15 Apr
1999 |
12 Apr 1999 |
| Install upper pool cofferdam cells
and paint model |
30 Apr 1999 |
30 Apr 1999 |
| Calibration of Powerhouse, Spillway |
30 Jun
1999 |
23 Jul
1999 |
| Completion of Base Conditions |
15
Oct 1999 |
15 Oct 1999 |
| Installation and Evaluation of Proposed
Lock Initial Conditions |
15 Nov 1999 |
30
Nov 1999 |
| Installation and Evaluation of Proposed
Bridges |
15 Feb
2000* |
7 Mar
2000* |
|
Optimization
of Plan B-2,
Documentation,
and Collection
Of
ADV Data |
21
Jul 2000 |
19
Jul 2000 |
|
Spillway
Training Works and
Modifications
to B-2 Dike |
21
Aug 2000 |
28
Aug 2000* |
|
Calibrate
flow conditions for
Railroad
truss float-in |
8
Sep 2000 |
7
Sep 2000 |
|
Incorporate
West Bank Boat
Excavation |
15
Sep 2000 |
13
Sep 2000 |
|
Analyze
Railroad Truss
Float-in
Conditions |
29
Sep 2000 |
29
Sep 2000 |
|
Powerhouse
Isl.pier impacts |
13
Oct 2000 |
1
Nov 2000 |
|
Document
Post Project
Conditions |
3
Nov 2000 |
1
Nov 2000 |
|
Evaluate
Proposed fishing
Jetties |
17
Nov 2000 |
17
Nov 2000** |
|
Collect
velocities at bridge
Piers
with 7 tailwater elev. |
1
Dec 2000
|
29
Nov 2000** |
|
Install
D/S Cofferdam and
Evaluate
Navigation Impacts |
15
Mar 2001 |
1
Mar 2001 |
|
Evaluation
of training work and D/S Cofferdam |
31 Mar 2001 |
28 Mar 2001** |
| Draft Report |
31 May 2001 |
0%** |
| Final Report |
31 Aug 2001 |
0%** |
*Milestone date not made due to
request for velocity data collection
from sponsor.
**Milestones added and revised
based on request for additional data
collection on 6 Nov., receipt of
cofferdam plans on 1 and 28 Nov., and
request for additional work with
float-in conditions that came out of 6
December meeting and request for
additional work that came out of 7
March meeting.
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