A structure for use with a liner such as for use in a rapid deployment flood protection system for diverting a liquid. The structure may include frames connected by horizontal link bars. The frames may include a dam face, a base, and a brace, and may include a collapsed configuration with the braces and the bases aligned with the dam faces, and a configuration with the dam faces inclined at an acute angle relative to the bases and the braces extending between the bases and dam faces. The frames may include the base having a bump stop and a quick release pin for connecting the brace to the base. The frames may include a C-shaped brace and a sleeve extending between legs of the lower end of the C-shaped brace, and a quick release pin extendable through the C-shaped base and the sleeve.

The absorption device includes a hydrophilic powder and a casing which is permeable to a liquid, the casing being composed of an upper layer which is superimposed on a lower layer, the lower and upper layers being connected to each other by strong connections which delimit a confinement zone for the hydrophilic powder in the casing. Advantageously, the lower and upper layers are connected to each other by first weak connections. The first weak connections delimit a plurality of adjacent cells in the confinement zone, each cell enclosing a quantity of hydrophilic powder sufficient to bring about the breakage of the first weak connections which delimit the cell when the hydrophilic powder absorbs a liquid.

Provided is a multiplex water cutoff wall with a simple structure that can control water infiltration into an interior by way of being provided with multiple water cutoff walls and having a configuration to drain water having infiltrated between the water cutoff walls with a drainage means such as a pump. A plurality of water cutoff walls 1A, 1B, 1C, 1D are disposed in a multiplex configuration with gaps in the wall thickness direction. Drain pumps 4a, 4b, 4c are provided as the drainage means for discharging water having infiltrated between the water cutoff walls 1A, 1B, 1C, 1D to the outside. Water that has infiltrated between the water cutoff walls 1A and 1B when a rise in water level is caused outside the multiplex water cutoff wall during flooding is discharged to the outside of the multiplex water cutoff wall by the drain pump 4a. If necessary, the water cutoff wall can be arranged into a multiplex configuration with a third water cutoff wall 1C and a fourth water cutoff wall 1D, and water infiltrating therebetween is discharged with the drain pumps 4b, 4c. Thus, the level of infiltrating water is lower nearer the interior, and water flood damage can be prevented to a structure in the interior protected by the multiplex water cutoff wall.

A flood barrier system includes vertical elements and panels extending between such vertical elements, the foregoing components having various features for inhibiting passage of flood water therethrough. One or more vertical elements may have a multi-layer base plate which forms a watertight seal with vertical gaskets disposed on the vertical elements. One of the vertical elements of the system may comprise a stanchion post which may be formed of extruded aluminum. Another vertical element which may find potential use in certain applications may be secured to a store front mullion. The panels in such system may include specially adapted gaskets to reduce instances of leakage. The vertical elements and panels allow the present flood barrier system to be flexible and readily deployable as a barrier to flood or flood risk.

A fiber block system suitable for controlling erosion and stabilizing soil is described that comprises a fiber block formed of a densely packed natural fibers and having an apron extending therefrom, wherein the apron is formed of the same natural fibers. The fiber block and apron are enclosed in a sleeve of fiber mesh and ties are disposed in the fiber block and connect to the sleeve. The fiber block, mesh, and ties can be made of coir fibers.

A wall element for holding back water is formed in one piece and has a planar, rectangular main portion having a first side, a second side parallel to the first side, a third side perpendicular to the first side, and a fourth side parallel to the third side. A first planar bearing portion is connected to the main portion over the first side and perpendicular to the main portion. A second planar bearing portion is connected to the main portion over the second side and perpendicular to the main portion. The second bearing portion is opposite the first bearing portion. The wall element has a planar connecting portion connected to the main portion over the third side and inclined to the main portion. The connecting portion has connecting holes in the longitudinal direction, and the main portion has connecting holes along the longitudinal extent of the fourth side.

A barrier system comprising: an elongate and rigid base member having a channel defined by inner walls of the base member, the channel extending along the length of the base member, the rigid base member being adapted to be anchored to an underlying supporting surface wherein the channel comprises a relatively broader in-use lower portion with a first width (w1) and a relatively narrower in-use upper portion with a second width (w2) defining an opening into the channel; and a removable wall assembly adapted to be removably fastened relative to the base member, the removable wall assembly comprising a flexible barrier wall having a length and a height and being adapted to be positioned within the opening of the upper portion of the channel wherein the wall assembly comprises a frame assembly for framing the barrier wall, the flexible frame assembly further comprising a top frame member and a bottom frame member with the height of the flexible barrier wall extending therebetween and wherein the bottom member is dimensioned to have a thickness that is less than or equal to w1 and that is greater than w2 for allowing the bottom member be received into the lower portion of the channel to position the flexible barrier wall in a substantially upstanding position and for simultaneously preventing the bottom member from being passed through the opening defined by the upper portion of the channel in an upwardly direction.

A fiber block system suitable for controlling erosion and stabilizing soil is described that comprises a fiber block formed of a densely packed natural fibers and having an apron extending therefrom, wherein the apron is formed of the same natural fibers. The fiber block and apron are enclosed in a sleeve of fiber mesh and ties are disposed in the fiber block and connect to the sleeve. The fiber block, mesh, and ties can be made of coir fibers.

An above grate based inlet filter system for erosion and sediment control comprises a filter mat configured to extend beyond the perimeter of the grate and a securing mechanism, such as magnets, configured to securing the filter mat around the perimeter of the grate. The system may include a filter berm secured in vicinity to the mat, and a rectangular array of magnets coupling the filter mat to the grate. The natural fiber filter mat may effectively be formed of vertically aligned coir fibers or alternatively of reticulated foam. Multiple side edges of the mat are undulating having a pattern of repeating recesses. The mat includes a plurality of high flow holes extending into the mat and which are closed at a bottom surface thereof. The mat includes at least one removable dewatering plug configured to allow for selective mat bypass

In accordance with one embodiment of the present invention, the invention is an erosion and storm water control apparatus comprising a hopper portion, an upstream apron, and a downstream apron. The hopper portion may be fabricated from permeable filter fabric and is aided in remaining open by gussets that may be comprised of fabric or other material. The hopper may comprise a self-rising upper edge. The upstream apron may comprise pockets that may be filled with dirt, rocks or the like, and may be buried in an upstream trench, in order to hold the erosion and storm water control apparatus in place during a runoff event, such as during or directly after a thunderstorm. The downstream apron may be fabricated from impervious membrane for anchoring with adhesive, staples, stakes, weights or the like. The invention may comprise handles to assist in the removal of debris and sediment.