Abstract: A scour prevention unit includes a bag body housing block objects in a bag material, and a cloth integrated with the bag body, wherein the cloth is housed in the bag material and is laid below the block objects, or is fixed below the bag body outside the bag body by fixing means.

Abstract: The invention relates to an assembly for centring a first elongate tubular element and a second elongate tubular element, such as an underwater pile accommodated within a noise mitigation screen, at a common central longitudinal axis along which axis both the first and second element extend, and wherein the centre system is provided with first coupling element for fixedly coupling the centre system with one of the first and second tubular elements, and second coupling element for engaging the other tubular element for centring the other tubular element at the central axis.

Abstract: In a general aspect, a method is presented for manufacturing support structures for offshore wind turbines. In some implementations, the method includes constructing a plurality of modular sections that assemble to define the support structure. One or more of the plurality of modular sections are configured to anchor to an underwater floor. At least one of the plurality of modular sections is constructed by operations that include forming a wall along a perimeter to bound a volume, filling the volume with a castable material, and hardening the castable material. In some instances, forming the wall includes depositing layers of printable material successively on top of each other. The method also includes joining the plurality of modular sections to assemble the support structure.

Abstract: Provided is a lateral water intake structure for preventing silting of bed load and floating debris, which is provided at a river bank. The lateral water intake structure includes: a diversion canal, a guiding wall structure, a shaft-shaped water intaking space, and a trash rack. The lateral water intake structure functions to prevent the floating debris from gathering at the surface of the trash rack and reduce a risk that the trash rack is damaged by water pressure and hitting of the floating debris. Meanwhile, by using a water flow in the watercourse to continuously wash the floating debris near the trash rack, maintenance costs of removing the floating debris at the trash rack manually or mechanically can be reduced.

Abstract: An arrangement method for deformation of a locked patch crack of a rock slope, includes: connecting a filling pipeline on a bladder-type monitoring probe to a mortar guiding pipe through an automatic locking and unlocking device, clamping a portion to be clamped on a bladder by a clamping assembly, driving a clamping driving mechanism to move towards an adit by a push driving mechanism, and pushing the bladder into the adit; injecting cement mortar into the bladder through the mortar guiding pipe by utilizing a high-pressure injection machine to expand the bladder until an upper surface and a lower surface of the bladder abut against an upper surface and a lower surface of the adit, and making a monitor on the bladder abut against the upper and lower surfaces of the adit; and arranging a plurality of bladder-type monitoring probes in an array in the adit.

Abstract: Provided is a method of delivering water to a root system of a crop, the method including causing the crop to be adjacent to, or in a region of, soil containing hydrogel, and delivering air to the hydrogel.

Abstract: The present invention discloses an end plate system for joining spun piles together comprises a top end plate (100) mounted at a bottom end of a first spun pile: and a bottom end plate (200) mounted at a top end of a second spun pile; wherein the end plates (100, 200) respectively have an interlocking surface that is formed with a plurality of segmental protrusions (110, 210) and segmental recesses (120, 220) arranged in an alternate configuration; characterized in that each segmental protrusion (110, 210) has a first radial interlocking profile (111, 211) and a second radial interlocking profile (112, 212) that extend towards the central portion of the end plates (100, 200); wherein the top end plate (100) and the bottom end plate (200) are mated by registering the segmental protrusion (110, 210) of one end plate to the segmental recess (120, 220) of another end plate and through a rotating movement about the central axis of the mated end plates (100, 200), a first interlocking joint (300) is formed by two a

Abstract: A dynamically deployable, low visibility pneumatic cofferdam for flood mitigation is disclosed. The cofferdam includes a first planar component, a second planar component, an inflatable hermetic airbag sandwiched therebetween, and connection members attached to the first planar component, a second planar component to form a cofferdam unit. The connection members are adjustable to apply and maintain a desired amount of pressure on the airbag to enable a watertight seal to be formed. The cofferdam units may be sized and designed to sealingly mate adjacent cofferdam units in a variety of configurations to form watertight seals. The cofferdam units may also be sized and designed to attach to seawalls, flood walls, sidewalks, or other infrastructure. When in a deployed state, the height of the cofferdam may be adjusted to a desired height to provide flood mitigation. When in an undeployed state, the cofferdam remains in a substantially flat and unobtrusive position.

Abstract: A stackable baffle drop shaft unit and method provides a pre-cast body that has a peripheral wall extending thereabout and having a top edge and an opposing bottom edge, the peripheral wall has an exterior facing surface and an opposing interior facing surface, and the body defines a medial channel extending therethrough between the top edge and the bottom edge. A baffle is carried by, and extends inwardly from the interior facing surface and partially across the medial channel defined by the body, and the baffle is positioned between the top edge and the bottom edge. The top edge and the bottom edge of the pre-cast body each define a portion of a positionally securing engagement and alignment means for positional and vertical alignment and stacking of plural units on top of one another. Vertical stacking of plural bodies forms a medial channel extending therethrough.

Abstract: The present disclosure relates to: a flexible joint connecting device used for sequentially coupling precast concrete segments so as to construct an underwater tunnel; an underwater tunnel construction method using the flexible joint connecting device so as to join, in a watertight manner, tunnel modules and integrally connect same, thereby constructing the underwater tunnel; and the underwater tunnel constructed by the construction method.

Abstract: The disclosed embodiments include systems and methods to improve downhole drilling. A representative system may include a geostationary portion (e.g. a valve assembly) and a turbine coupled to the geostationary portion to cause counter-rotation of the geostationary portion relative to a drillstring in a default state. A generator that is also operable to act as a motor is coupled to the turbine, and is also coupled to a controller and an energy that may harness any excess energy generated by the turbine when the turbine is able to counter-rotate the geostationary portion at a faster rate than needed to maintain the geostationary portion in a rotationally static condition relative to the wellbore.

Abstract: A method and system for ecological operation of total phosphorus (TP) export of a cascade hydropower station are provided. The method includes: integrating total power generation and TP export of the cascade hydropower station into a single operation objective, and obtaining an operation objective under different weight ratios; optimizing the obtained operation objective; and obtaining a water level operation process corresponding to total power generation and TP export under the current operation objective through the optimized operation objective. The present invention alleviates an ecological and environmental problem caused by the construction of the hydropower station from a water quality mechanism, and can be widely used, for example, in the ecological optimal operation of cascade hydropower stations in a river basin.

Abstract: A static floodwall system that includes at least one floodwall section, and may include an access gate. The access gate may include a motor, control box, and drive system for moving a gate panel between open and closed positions. The static floodwall system may further include a plumbing system for transporting rain water from a dry side to a wet side. The floodwall system may be installed such that it is surface mounted, requiring minimal excavation. Methods of installing the floodwall system include creating a shallow excavation, adding compact fill and a top layer to the excavation site, and installing the floodwall section(s) on the top layer.

Abstract: A system for performing a subterranean operation, where the system may include a substructure of a rig configured to move from a first position to a second position, a first platform overlying and coupled to the substructure, a second platform overlying and coupled to the substructure, with the first platform configured to move independently from and relative to the substructure and the second platform, and with the second platform configured to move independently from and relative to the substructure and the first platform.

Abstract: Provided is a method of laying empty pipes on the seabed, which method includes arranging a plurality of empty pipes in a bundle; arranging a bundle-strengthening element in a cavity defined by the pipes of the bundle; binding the bundle; and lowering the bundle to the seabed.

Abstract: A method includes mounting a platform deck block to a tower. The platform deck block (500) includes a first frame (515) defining a deck, a plurality of first conductor tubes (505) connected to the first frame, a first plurality of releasable connectors (520) coupled to the first conductor tubes, and a plurality of docking receptacles (800A,800B,800C) defined in the deck. The tower includes a second frame (415), a plurality of second conductor tubes (405) connected to the second frame, and a second plurality of releasable connectors (420) coupled to the second conductor tubes and engaging the first plurality of releasable connectors coupled to the first conductor tubes. The method further comprises mounting a first production block (600) to one of the plurality of docking receptacles.

Abstract: A reinforced tensionless concrete pier foundation for supporting a tower and a method of constructing the same is provided, the foundation having an outer CMP and an inner CMP with an annular space therebetween in which a plurality of sleeved tower anchor bolts are embedded, and the pier foundation including at least one reinforcement structure that at least partly encircles the outer CMP to provide one or more of increased lateral stiffness, increased shear resistance and overturning (upset) moment capacity, reduced bending, displacement, and deflection of the top of the pier, and improved conditioning, containment, skin friction and lateral bearing capacity of the surrounding soil and/or rock substrate that supports the tensionless pier.

Abstract: The present invention discloses a type of energy-absorbing rock bolt device with umbrella-shaped structure, which consists of a body of bolt, and one end of the said body of bolt is equipped with a preloaded system, as well as the other end of the said body of bolt is equipped with the first support system, in addition, the said body of bolt is equipped with several second support systems, and the said second support system is located between the said preloaded system and the said first support system; meanwhile, the said second support system consists of the first umbrella-shaped support system and the second umbrella support system.

Abstract: A foundation pier bracket system provides attachment of a pier shaft with a building or structure foundation such that the system provides securement to competent strata or soil below. The system can include a reinforcing sleeve and a bracket assembly. The bracket assembly can include a shaft receiving portion and a seat portion. The shaft receiving portion can define an aperture that is sized and shaped to receive a portion of the reinforcing sleeve therein. The seat portion can include a plurality of protruding members that protrude upwardly therefrom. The plurality of protruding members can be arranged such that they restrain lateral movement of a beam along the seat portion in at least one axis. The reinforcing sleeve can include a locking wedge that secures the reinforcing sleeve to the bracket assembly. A method of supporting a foundation of a building is also provided.

Abstract: A method for recovering a sunken material from a body of water having a water layer and a sediment layer, the sunken material present at a water-sediment interface is presented, comprising using an impermeable hollow column and a high density fluid to float the sunken material to the top of the column for readily removal of the floated sunken material using surface material removing equipment.