Inflatable severe-weather seawall

A method of deploying and recovering a seawall, the method comprising:

• positioning a flexible wall body along a boundary to be protected, the flexible wall body defining a first chamber and a second chamber;
• introducing water into the first chamber and introducing water into the second chamber such that the first chamber and the second chamber are each filled substantially completely with the water to create mass for stability during a severe-water event;
• controlling a vent near a top region of the flexible wall body to discharge gas as the water rises within at least one of the first chamber and the second chamber;
• maintaining, with intersecting triangular reinforcement members distributed throughout both the first chamber and the second chamber, a hooked crescent forward-facing profile configured to cause an incident wave to curl beneath a forwardly projecting lip portion and roll back on itself and a rearward-facing lower buttress portion extending at about forty-five degrees relative to horizontal;
• and
• after recession of water associated with the severe-water event, evacuating the water from the first chamber and the second chamber and opening the vent to facilitate collapse of the flexible wall body for storage or reuse.

An in-ground deployable seawall installation comprising:

• a subsurface housing defining an elongated cavity;
• a flexible wall body storable within the subsurface housing, the flexible wall body defining a first chamber and a second chamber;
• at least one pump configured to introduce water into the first chamber and the second chamber such that the first chamber and the second chamber are each fillable substantially completely with the water;
• and
• an activation system configured to initiate deployment responsive to an early warning input indicative of an approaching severe-water event, wherein the flexible wall body includes intersecting triangular reinforcement members distributed throughout both the first chamber and the second chamber, and wherein, in a deployed condition, the flexible wall body defines a hooked crescent forward-facing profile and a rearward-facing lower buttress portion extending at about forty-five degrees relative to horizontal.