Innovative Variable Mass Modules for Flood Protection, Emergency Strategies and Shoreline Erosion Control

Transcription

1 Innovative Variable Mass Modules for Flood Protection, Emergency Strategies and Shoreline Erosion Control ASBPA 80TH ANNUAL MEETING Long Branch, NJ October 9, 2006 S. E. (Ed) Veazey,, Ph.D., P.E. President Seament Shoreline Systems, Inc. & Kenneth R. Craig, P. E. Director of Coastal Engineering, Taylor Engineering, Inc.

2 FLOOD PROTECTION The Louisiana Coastal Protection and Restoration (LACPR) Workshop suggested hollow core levees. The patented SEABOX AND SEAMOD concepts are directly applicable to solve the load bearing and subsidence problems with hollow hexagonal and rectangular boxes. The SEAMOD floodgate provides an innovative way to open and direct silt laden flood water to re-nourish subsiding wetlands. Both SEABOX concrete and metal shipping containers appropriately encapsulated with a poly-urea or epoxy coating can be used for strengthening and raising the height of levees. These boxes are compatible with the Intermodal Transportation System for efficient handling, transportation and installation. An unsolicited proposal has been submitted to the USACE.

3 LACPR & EXISTING HOLLOW CORE LEVEE PATENTED CONCEPT Hollow Core Levees Significant expense and design obstacles of the barrier system will be addressed more thoroughly in the Final Technical Report. Engineers recognize that the heavy loads imposed on the foundation by a large levee would require high costs to improve the local soils. The source for the large quantities of borrow material required to construct a large levee system is also a concern. One innovative solution suggested during the Engineering Technical Approaches and Innovations Workshop is the concept of constructing a hollow core levee. There are several ways in which this type of barrier could be constructed involving the use of precast concrete elements... Note: page 62 of the 2006 Louisiana Coastal Protection and Restoration Preliminary Technical Report to United States Congress, July 2006 Model of SEAMOD hollow concrete caisson and individual modules for cost effective levees

4 SEAMODTM LEVEE CAISSON River Land End View Variable water ballast in each tank can vary the mass of the structure depending on soil load capacity Optional Collars Levee Land Top View

5 SEAMODTM LEVEE REPAIR Floating to repair site Seaward side repair- or new levee completely in water Additional Fill Landward side repair

6 SEAMODTM FLOODGATE Top View Gate Flood Gate Tongue & Groove Slides Side View Opening Floodgate Top View Basin Pipes to Wetlands Side View Gate Open

7 Levee Flood Gate To Renourish Wetlands With Silt Flood Gate Tongue & Groove Slides Gate Basin Top View Pipes to Wetlands

8 FLOAT TEST OF SEA-BOX CONTAINER MODIFIED FOR EMERGENCY USE 20 FOOT SHIPPING CONTAINER COATED INSIDE AND OUT WITH EPOXY COAL TAR Vent Valve Alternative Vent On Top Flood Port

9 SEABOX MODULAR LEVEE OR DAM ENCAPSULATED METAL CONTAINER OR CONCRETE CAISSON Optional Collar to Inhibit Subsidence End View

10 SEABOX SHORT TERM LEVEE ENHANCEMENT Erosion Spot Top View Leak Spot Raise Levee Height Impervious Plastic Sheet Side View Filter Cloth

11 EMERGENCY STRATEGIES Bees long ago discovered how to store the mathematical maximum amount of honey with the minimum beeswax. These same hexagons can be used to implement the Navy s Seabase concept. Similarly a Homeland Emergency Logistics Platform (HELP) could function to support rescue and re-supply for a coastal disaster from the sea. Protection of our ports is deemed inadequate. The same hexagonal modules could form a Sea-sentinel platform to check ships before they enter port. Further a Sea-port could be constructed off-shore from the same modules. SEABOX shipping containers modified for emergency use could be used to plug breaches in levees, barrier islands and dams as well as raise or strengthen their structure. Lastly, concrete or modified shipping containers could be used to rebuild barrier islands leveled by hurricanes or rising sea levels.

12 OF BEES, CONCRETE & SEAMODTM CONSTRUCTION Bee on Honeycomb WWII CONCRETE SHIPS AS BREAKWATERS SEAMOD CAISSON SEABASE CONCEPTUAL ARRAY

13 SEAMODTM SEABASE WWII 21,000,000 TON FLOATING ICE BASE CONCEPT CALLED HABBAKUK SEAMOD SEABASE CONCEPT USING PRECAST CONCRETE HEXAGONAL MODULES

14 SEA-HELP: Systems Engineering Approach for a Homeland Emergency Logistics Platform SEA-HELP arrives with water, rescue teams, food, shelters, medical supplies, hospital, etc. Planes return with injured brought from shore by helos, hover/landing craft

15 SEA-SENTINEL PORT GATE Control Tower In Protected Water SIDE VIEW In Rough Water

16 SEAMODTM FLOATING/ FIXED OFFSHORE SEA-PORT OCEAN GOING SHIP COASTAL SHIPS TUNNEL TO SHORE

17 SEABOX CONTAINER FOR EMERGENCIES UNLOADING PRESERVATIVE COATED BRIDGE CONNECTOR SIX UNITS READY FOR TESTING / USE

18 PLUG LEVEE, DAM OR BARRIER ISLAND BREACH Barge Carrying Containers Tug Plugging the Gap Anchor Truck Delivering Container Helo Bringing Empty Container

19 REBUILD BARRIER ISLANDS End View Containment Array Top View

20 SHORELINE EROSION CONTROL The concrete SEAMENT L and T walls have been in use for 12 years in the Chesapeake Bay region. They have survived Bertha, Fran, Isabel, and Ernesto extremely well compared to rip-rap revetments and wood/vinyl bulkheads. The SEABOX units are designed utilizing Archimedes Principle (concrete boxes float) and Newton s Law ( boxes gain effective mass with entrained and free sand and water). The boxes transportation weight is about 10% of equivalent rock. Installation is simple, quick and cost-effective. They can be pumped, re-floated and relocated. The SEABOX sill boxes, used to protect marsh seaward fringes, act as nurseries for SAV and EAV. They are easier to install from the seaward side without disturbing the marsh itself. One simply plugs the holes and floats them in place at high tide and sinks them. The open holes provide an easier way for turtles, fish, horseshoe crabs etc. to transit the sill compared to rock.

21 SEAMENT L WALLS & HURRICANE ISABEL 4 TON L WALLS BASE OF BANK INSTALLATION ISABEL TOOK 20 OF NEIGHBOR S BANK THEN NEIGHBOR CHOOSES SEAMENT!

22 SEABOX Deployment Beach Boxes Floating Breakwater Semi-Submerged Reef Breakwater

23 SAND DUNE WITH CONCRETE SKELETON SIDE VIEW OF BEACH BOX SYSTEM

24 SEABOX CHESAPEAKE BREAKWATER INSTALLATION MOVING FLOATING BOX PREPARING TO SINK SECURE WITH PILES 110 FT. BREAKWATER IN ONE DAY!

25 SEABOX INSTALLATION IN POTOMAC AT STRATFORD HARBOR TRANSFER FROM LAND TO RIVER PUSHING BOXES UPRIVER 1/2 MILE SINKING BOXES AT SITE IN 4 HOURS TOMBOLOS 2 MONTHS LATER!!

26 T Pier Over Breakwater & Groin AT EAGLE BAY ON THE POTOMAC, KING GEORGE, VA

27 SEAMODTM HEXAGONAL MODULES Regular Hexagon for Sea-base, etc. Stretched Hex Box for Breakwaters, Bulkheads

28 SILL BOXES WITH S.A.V. & E.A.V. & SHOWING NEW DESIGN SPARTINA ALTERNIFLORA WILD CELERY