Abstract: A hydrodynamic water blocking device for an underground garage includes a water blocking plate assembly and side rail assemblies, wherein the water blocking plate assembly includes a first water blocking element, one end of the first water blocking element is rotationally connected with a base, the other end of the first water blocking element is rotationally connected with one end of a second water blocking element, the first and second water blocking elements have foamed layers, the base has grooves capable of accommodating the embedded foamed layers, water inlets formed in the base communicate with the grooves, each of the side rail assemblies includes a side plate with an ascending rail including a horizontally disposed linear rail and an arc-shaped lifting rail, the second water blocking element has a walking assembly embedded in the ascending rail which is connected with a driving mechanism installed at the second water blocking element.

Abstract: The present invention relates to inflatable bladder actuated water control gates for control of open channels such as rivers and canals and for control of dam spillways without the need for intermediate piers. The air bladder and hinge flap wedge clamping system includes hinged engagement of the upstream edge of the clamps to the foundation so as to prevent the application of bending and shear loads to the anchor bolts. The resulting configuration facilitates the use of high strength alloy steel anchor bolts in a corrosion protected environment and also prevents tensile loading of the concrete foundation and associated cracking of the concrete foundation.

Abstract: The invention concerns a flood protection for protecting a back area against rising water level from a front area, the flood protection operating between a bottom and a water surface, including at least one barrier element with a longitudinal direction and a height direction, the longitudinal direction during operation extending substantially transversely of an area, e.g. a stream, a fjord, a river or an estuary, and the height direction during operation extending from the bottom of an area, e.g. a stream, a fjord, a river or an estuary, and up, where the at least one barrier element during operation interacts with a base arranged at the bottom of the actual area. The invention also concerns a method for operating such a flood protection.

Abstract: In order to achieve a swing motion type retractable floodgate using a cost-effective torsion structure, the present invention is provided with a swing pivot support mechanism, a friction shoe, a door bottom support seat, and an operation step during a tidal flow. The support mechanism allows free rotation about three axes and restricts motion in the three axis directions, and a pulling force acts on the support mechanism. The friction shoe dissipates tidal energy during closing operations in a tidal flow to a level that prevents damage to the door. Reactive forces are endured by reducing impact forces with the flexibility and strength of the door bottom support seat. Suitable tidal energy dissipation is performed by selecting friction force strength in the operation step.

Abstract: A flap gate includes a door body and a flap ancillary part. When the door body is in its down position, a movable end portion of the door body is located forward of a supported end portion. The door body changes its position between the down position and a maximum up position. The flap ancillary part applies tilt-up moment to the door body only when the door body is located in a position between the down position and a first position. The flap ancillary part also applies tilt-down moment to the door body only when the door body is located in a position between the maximum up position and a second position.

Abstract: A water conserving gate includes a base and a gate board configured to resist external water flow. A first supporting column, a second supporting column and a third supporting column are sequentially arranged on an upper portion of the base. A control box is arranged on the upper portion of the base. A first connecting rod is connected between a gate board and the first supporting column; a second connecting rod is connected between the gate board and the second supporting column. A third connecting rod is connected between the gate board and the third supporting column. A first rotary boss arranged on the first supporting column is movably connected with the first connecting rod. A second rotary boss arranged on the second supporting column is movably connected with the second connecting rod.

Abstract: Described herein is a floating flap gate including a gate leaf having a buoyancy forming portion, the gate leaf being configured to be raised due to buoyancy effect (e.g., from water), a bottom fitting mounted to a proximal end portion of the gate leaf, the bottom fitting having a convex circular arc-shaped surface across a width direction of the gate leaf, a plate member having a concave circular arc-shaped surface to be mated with the convex circular arc-shaped surface of the bottom fitting when the gate leaf is in a lowered state, wherein the concave circular arc-shaped surface is in contact with the convex circular arc-shaped surface when the gate leaf is raised.

Abstract: According to the present invention there is provided a liquid retention device comprising: a braced frame mountable on foundations in a plurality of locations, in which said device comprises a base section and at least one upstanding support, and in which said brace further comprises height-adjusting means for adjusting the height of said frame, and in which said device further comprises a face supported by said frame, in which said face is inclined at an angle to the at least one upstanding support, wherein said face is covered by a least one detachable mat.

Abstract: A buoyant flood guard barrier panel passively buoyantly rotationally pivotable upward from horizontal about a first horizontal axis overlays a subframe unattached to the panel. A secondary mechanism for raising the panel has one or more lift arms below the panel transverse to the first axis are rotationally mounted on a second horizontal axis parallel to, below and forward of the first axis. One or more powered drivers act on one or more driven member units each attached to a lift arm rearward of and lower than the second axis to pivot the lift arm on the second axis, rotating the arm upwardly under the panel to rotationally raise the panel. The powered driver may be a winch or a hydraulic actuator.

Abstract: The invention relates to improved water control gates and related inflatable actuators, and associated sealing, manufacture and operation apparatus and methods. Advancements in technologies related to air fitting design, inflated bladder stress relief, inflatable bladder strength enhancement, water gate related slide friction mitigation, abutment and other impounded water seals, gate panel fabrication, traffic accommodating water impoundment structures, and water gate panel system operation efficiency, as well as nappe areation, hinges, and bladder manufacture technology are disclosed herein.

Abstract: Device for retaining water comprising a foundation, a retaining wall movably attached to the foundation and a shore movably, particularly hingingly, attached to the foundation, in which the shore and the retaining wall are movably, particularly hingingly, attached to each other, and in which the retaining wall is provided with at least an internal longitudinal hinge about which the retaining wall can be turned.

Abstract: A frame structure for use as a portable dam. Each frame structure is comprised of a support beam, a base beam and at least one brace beam connected together in pivoting relationship so that the beams may be folded down together for quick assembly and disassembly. The collapsed beams are configured to lie parallel to each other in a folded arrangement to permit efficiency in stacking multiple units together for storage and transportation. The erected frame structures are connected to each other and held in a spaced relationship through the use of couplers that are adapted to slide over the ends of the beams forming the frame structures. The individual frame structures may be erected in place in the water, or a section comprising several connected frame structures may be pre-fabricated and lifted and placed as a unit in the water. A stiffener member is affixed to adjacent frame structures to hold them together in rigid relationship.

Abstract: The present invention provides a movable water-protection apparatus capable of driving a water barrier plate manually or automatically when needed. The movable water-protection apparatus includes a water barrier plate (2, 50) for shutting out water, such as seawater, river water, and rainwater, likely to intrude into a basement (G) and a driving device for driving the water barrier plate (2, 50) upward from an underground position along a guide device (10) or a side plate (60). The water barrier plate (2, 50) is disposed in an underground space at an entrance of the basement (G). The driving device has a water pressure type piston/cylinder unit (20) to which service water is supplied.

Abstract: A tamping rammer capable of optimum tamping of the ground by its stable jumping behavior when tamping hard ground without giving rise to unstable jumping of the machine, includes a tamping foot having a tamping plate which has an area for supporting the machine body at the bottom of the tamping plate which contacts the ground parallel thereto. The support area comprises a flat range R around a perpendicular line B drawn from the center of gravity G of the machine to the ground. The range R has a radius r corresponding to the distance between the line B and the centerline A of the machine drawn to the ground along the longitudinal direction of the tamping foot.

Abstract: An automatic flashboard (10) comprises a wall (12) installed on a hydraulic structure (11) so as to be capable of passing from an erect position in which it retains a mass of water to a lowered position in which it allows the water to pass substantially without obstruction, and at least one elongate retaining member (13) for holding the wall (12) in its erect position against horizontal thrust (P1) from the mass of water (25). The retaining element (13) extends between the wall (12) and a reaction point to which it is connected by a connection (15) that can be automatically eliminated when the water reaches a certain level. The flashboard (10) also includes a massive element (16) movably mounted on the structure (11) and coupled to the mass of water so as to be in a stable state so long as the water remains below a predetermined level (N) and to pass into an unstable state and to be moved when the water reaches the predetermined level (N), the connection (15) being eliminated by the massive element moving.

Abstract: A water dam includes a number of loading pallets arranged side-by-side and inclined outward from the water supported by supports. Membranes are placed on loading pallets and extend a distance in front of the pallets under the water. The membranes may be held down in the front edge by stones, sand bags, etc. initially to hold the membrane in place. The supports are triangular and made of U-shaped sheet metal beams. The one on which the pallets rest grips over the adjoining legs of two loading pallets to hold these together. To the rear the support is extended sufficient to secure that it cannot be tilted by the water. To achieve this and achieve a good grip on the ground the inclination is preferably 45.degree., resulting in great vertical forces on the ground, a good grip on the ground.

Abstract: This device for triggering the destruction of a selected portion (1 or 11) of a hydraulic structure such as an embankment dam, dike, or levee built out of erodible material so as to be destroyable by hydraulic erosion is constituted by at least one massive element (5) which is disposed on the top of the selected portion (1, 11) of the structure and which is held there by gravity, the massive element (5) being dimensioned in size and in weight in such a manner as to be expelled by the water when it reaches a predefined level (N), the vertical dimension of the massive element measured beneath said predefined level (N) being selected in such a manner that the nappe which is released after the massive element has been expelled is of a thickness (z) suitable for causing reliable and rapid destruction of the selected portion (1, 11) of the hydraulic structure.

Abstract: A hurter for use in conjunction with a wicket dam prop at a downstream side f a wicket, the hurter comprising a block having therein on an upper surface thereof a bearing for receiving a free end of the prop, a ramp disposed downstream of the block on a base plate and inclined from the base plate to a top surface of the block and adapted to support the free end of the prop, a first trough wall on a first side of the ramp and the block hingedly connected to the base plate, a cover portion of the first trough wall extending over a first portion of the block, and a second trough wall on a second side of the ramp and the block hingedly connected to the base plate, a cover portion of the second trough wall extending over a second portion of the block, the first and second trough wall cover portions being engageable by the prop as the prop moves up the ramp, to cause the first and second trough walls to pivot away from each other to permit the prop to pass between the cover portions and into the bearing.

Abstract: An irrigation water control gate for controlling the amount of water delied downstream. The gate includes a frame and a pair of panels in the frame hingedly connected at adjoining horizontal side edges and forming a wedge shape extending upstream. The upper panel forms the crest of the gate which is raised or lowered on cables. Water level sensing means positioned above the crest for movement with the crest activates control means and cable driving means to move the crest so that water flowing over the crest is maintained at a constant depth.

Abstract: The invention is directed to a breakaway prop for a wicket employing a slble and rotatable prop bearing which is secured to the prop by shear pins. Upon application of sufficient force, the shear pins release the prop bearing and allow the wicket to drop without damaging the prop.

Abstract: A collapsible safety prop for supporting a waterway dam gate comprising first and second links, each of which has a longitudinal axis and an inner and outer end. The inner ends of the links are provided with a lateral member extending laterally from the longitudinal axis of the links. Each of the lateral members further includes a pivot substantially offset from the longitudinal axis of the links. A pivot pin connects each of the pivots and thereby interconnects the two links. Shear engaging mechanism are provided on the inner ends of the links and positioned on the longitudinal axis of the links and spaced a substantial distance from the pivot pin. Shear mechanism for connecting the shear engaging means are provided and positioned on the inner ends of the links for normally locking the prop links against pivotal movement. The outer ends of each of the links are also provided with pivot mechanism.

Abstract: In one embodiment, the invention is directed to a hydraulic lifting module hich is removable as a unit from a wicket dam. A hydraulic cylinder is pivotably mounted about an axis in the frame and extends outwardly of an apertured cover between extreme positions. A slidable shield is secured and is pivotable with a portion of the cylinder extending out of the cover for closing the aperture and the extreme positions of the cylinder. A flexible boot interior of the frame renders the housing water and silt resistant.

Abstract: A hinge assembly for barrier gates, sluice gates and the like attempted to be raised from beneath the sea, has a fixed portion mounted in a base which can be provided with a tunnel affording access to it and enabling a tierod to pull a replaceable body against this fixed portion. The body carries the movable part of the hinge and is provided with a rotating joint enabling compressed air to be delivered to the barrier.

Abstract: The gate system comprises a wicket which is capable of taking up a number of different positions corresponding to predetermined angles of inclination, an operating device comprising a pivotally mounted jack, and a rotatable abutment member carried by the wicket for receiving the end of the operating rod of the jack. The jack is restored to an end position of angular orientation when the operating rod is moved away from the abutment member. This end orientation is close to the orientations of the jack during operation. The operating rod of the jack and the abutment member comprise guiding apparatus for orienting the jack towards the abutment member when the end of the jack-operating rod comes close to the abutment member.