2309results about "Dams" patented technology

To facilitate construction of an hydraulic dam, a water fillable barrier has a tubular water fillable portion with a tongue projecting from one end. The tongued end of the barrier may abut the tubular sidewall of a second such water fillable barrier with the tongue wrapped around the second barrier and lashed to the first barrier. This arrangement allows the effective construction of a corner in an hydraulic dam. To extend the length of the dam, opposed ends of each of two end-to-end water fillable barriers may be overlapped within a sleeve. When the barriers are then filled with water, they foreshorten. This pulls the overlapping portions back in order to form a high pressure end-to-end abutment between the barriers.

Sediment control devices and systems are provided. The device generally includes a core made up of granular material encased within a puncture resistant fabric, a compressible layer enwrapping the core and a geotextile fabric outer casing. A plurality of such devices provide a system for controlling erosion and sedimentation.

A reinforcement element, comprises at least one sensor fiber adapted for strain measurements based on stimulated Brillouin scattering within said sensor fiber. Furthermore, a system for monitoring strain within a structure comprises a reinforcement element comprising at least one sensor fiber adapted for strain measurements based on stimulated Brillouin scattering within said sensor fiber, a pump laser for coupling in laser radiation of a pump frequency into said at least one sensor fiber, a Stokes laser for coupling in laser radiation of a Stokes laser radiation into said at least one sensor fiber, wherein the pump frequency and the Stokes frequency are different from one another and wherein the frequency difference between the pump and Stokes frequencies is within the range of acoustical phonons within said sensor fiber, a sensor adapted to obtain a stimulated Brillouin backscattering signal, and a network analyzer adapted for determining the complex transfer function of the sensor fiber to determine a spatially resolved strain measurement.

The invention relates to an automatic water stop device which comprises a face plate (1), a hinged base (3) and a base (5). The hinged base (3) is arranged at one end of the base (5), one end of the face plate (1) is hinged to the hinged base (3), the other end of the face plate (1) can perform arc rotation along the hinged base (3), and a water inlet-outlet hole (51) is formed in one end of the base (5). The automatic water stop device further comprises a floating plate (2). The floating plate (2) is arranged on the face, close to the base (5), of the face plate (1). When water enters the base (5) from the water inlet-outlet hole (51) or space above the base (5), the floating plate (2) can drive the face plate (1) to upwards rotate along the hinged base (3) under the effect of floating force of the water. According to the automatic water stop device, external-force driving is not needed, the water is automatically stopped, and the automatic water stop device is simple in structure, low in cost and easy to install.

A water-fillable flood control device is provided that consists of a waterproof bag with a friction causing outer surface and having a mouth that can be closed with a waterproof seal after filling the bag with water. The bag can be filled by one person at a flood site using a filling/form sleeve and locally-available water. It is not necessary to fill the bag with sand, or add chemicals. The friction causing surface may be achieved by any means or method so long as the purpose is to hold the device in place for facilitating the stacking of a plurality of devices on top of each other to form a stable water control structure without the need for external supports.

The invention discloses a gyrating drilled shaft provided with an aeration ridge. The invention is characterized in that the gyrating drilled shaft is provided with an aeration ridge on the wall surface at the middle lower part of the drilled shaft section, the aeration ridge is formed by gradually shrinking the drilled shaft connected with the upper flat section of a flood discharging tunnel from the middle part to the middle lower part and then suddenly expanding the wall surface, and at least two aeration holes are distributed on the annular aeration ridge formed by the sudden expansion, each of the aeration holes is spliced with a vent pipe communicating with the atmosphere. The vent pipes can be selectively buried on the outer side of the gyrating drilled shaft. The gyrating drilled shaft disclosed by the invention enables near-wall water layers at the lower reaches of the aeration ridge to become into aerated water flows, thereby increasing the flow cavitation number, playing the effects of air entrainment and cavitation prevention, preventing the overflowing section at the middle lower part of the drilled shaft from being damaged by cavitation erosion, and ensuring the safe flood discharging operation of the gyrating drilled shaft.

Disclosed is an expansion-sealed flood control gate, comprising a water board, a frame structure, two symmetrical constraint tracks, at least one encased expandable sealing tube, and a plurality of adapters. A U-shaped slot is formed between the two symmetrical constraint tracks for plugging in the water board. Each constraint track has a U-shaped expanding compression chamber connecting from one end to the other end to accommodate the tube inside. The adapters are connected with the open ends of the tube and fixed on the constraint tracks at the connected ends. Accordingly, there can be effectively repelled floods that the tube with the characteristics of active filling and uniform packing stress have the higher geometric tolerance, even if the slits between the water board, the constraint tracks and ground emerge the unexpected geometrical change, the encased expandable sealing tubes are ballooned to mend the slits.

The use of water soluble product in construction that is at least partially encapsulated by a water resistant membrane layer, particularly, the use of phosphogypsum, preferably leached phosphogypsum, that is at least partially encapsulated by a geomembrane layer, thus enabling the use of phosphogypsum as a construction material.

The water permeable and soil keeping wall is one wall formed with longitudinally connected blocks, which are longitudinal sections including top side with raised middle part, bottom side and two end sides and are downward horn. The blocks are laminated vertically to form wall with water permeating gap between each two blocks. The water permeable and soil keeping wall has excellent water permeating and soil retaining performance and has various kinds of application.

A flood barrier system for temporarily sealing an opening in a wall structure against the inflow of flood waters. The system comprises a plurality of elongated, horizontally disposed barrier elements of a length somewhat greater than the width of the opening. The barrier elements are stacked vertically, one upon the other against the outer face of the wall structure. End clamps engage opposite ends of the individual barrier elements to press them snugly against the outer surface of the wall, providing seals along the opposite vertical side edges of the opening. The barrier elements incorporate a unique interlocking configuration that simplifies and expedites assembly of a flood barrier and strengthens the integrity of the assembled structure. Improved and simplified arrangements are provided for clamping the ends of the barrier elements and for applying downward pressure to the assembled barrier. The resulting structure is more economical to provide and maintain and is more quickly assembled in the often emergency circumstances in which it is required.

The invention relates to a method for river course slope protection by using composite stream constructed wetlands, comprising the following steps that: (a) grass planting ditches with V-shaped cross section are dug on a slope surface, and plants are planted in the grass planting ditches; (b) a composite stream constructed wetland in which fillers are provided is set at the water outlet of the grass planting ditch, and one or more plants selected from reeds, cattail, sedge, Sparganium, Juncus, canna, metasequoia, calamus, Scirpus tabernaemontani, arrowheads, Aponogetonaceae grass, Alternanthera sessilis, cress or sedge are planted on the fillers; (c) a water outlet pipe is arranged at one side of the composite stream constructed wetland adjacent to the river course so that water flowing from the composite stream constructed wetland is drained into the water course. The method for river course slope protection by using composite stream constructed wetlands has the advantages of good stability of slope protection to water courses, little damage to ecological environment keeping at both sides of rivers, capability of beautifying riparian landscape and adding biological diversity, low cost and favorable pollution interception and purification effects.

The invention discloses an initial rainwater and mixed rain-sewage overflow water impounding sewage facility comprising a rainwater guide canal and a regulation reservoir arranged beside the rainwater guide canal. The rainwater guide canal is provided with a sinking intercepting channel which is provided with a side guide port communicated with the regulation reservoir. A grille area, a wetland filter plant area and a seepage filter area are arranged in the regulation reservoir sequentially along the water flow direction. Initial rainwater and mixed rain-sewage overflow water are low in flow; when guided via the rainwater guide canal, the initial rainwater and the mixed rain-sewage overflow water fall and flow into the intercepting channel at first and then flow into the regulation reservoir for purification, through the side guide port of the intercepting channel; with the passage of time, water level of the regulation reservoir rises, the intercepting channel is supported up to raise the water level thereof, and accordingly when flowing by the intercepting channel, late rainwater directly overflows from the intercepting channel and flows into downstream water through the lower segment of the rainwater guide canal; therefore, the initial rainwater and mixed rain-sewage overflow water which are severely contaminated, and the late rainwater, which is clean, are discharged separately.

A modular berm system and method for installing the berm system about a containment area are provided. The berm system is formed by interconnecting a plurality of panels in an end-to-end arrangement. Corner pieces which enhance the modularity, stability and rigidity of the berm system are also provided. A continuous liquid barrier liner overlies the containment area and the supporting perimeter of panels. The liner blocks any discontinuities between panels. Discontinuities can be overlapped with flaps for protection of the liner.

The method of the present invention results in a secondary containment area for above ground storage tanks. The method involves leveling the site, laying a foundation bed, building a retaining barrier around the site, covering the foundation bed and retaining barrier with a liner cloth, and applying a layer of polyurea to the liner cloth and retaining barrier.

A small-flow river water cleaning and pollution stopping system comprises shore-based ecological beds, relaxation hydrophilic tribunes, ecological filtering beds and diversion rubber dams. The shore-based ecological beds are arranged on two shores of the river and in a slope structure, the shore-based ecological beds and water are separated through the relaxation hydrophilic tribunes, filtering layers are arranged on the side of the shore-based ecological beds, which are in contact with the relaxation hydrophilic tribunes, and a plurality of drainage openings are formed in the bottom of the relaxation hydrophilic tribunes. The ecological filtering beds are arranged in the water of the river and close to the sides of the shores, the middle of the two ecological filtering beds is a central region of the river, and the ecological filtering beds and the river central region are separated by permeable retaining walls and the diversion rubber dams on the permeable retaining walls. The ecological filtering beds are divided into upper and lower layers, filtering material layers are arranged on the lower layers, and soil layers are arranged on the upper layers. The ecological filtering beds are in rectangular or cambered structures and opened towards the river upstream direction to collect water from the upstream.

The invention discloses an ecological filter dam and the design and construction methods thereof. And it is located in a non-flood carrying riverway, and its section is in a ladderlike double structure and the side-slope coefficient of its slope is 1/1-1/2.5, and it comprises four parts of: (A) control layer; (B) transition layer; (C) overflowing layer; and (D) steady layer. And its design flow: firstly surveying landform conditions of damming address and inquiring hydrometeorological data or other design data and obtaining the geometric parameters and design flow, substituting these parameters into the dupine formula in the seepage mechanics and calculating reasonable seepage coefficient and stay time, then making further design and selecting proper graded gravels, damming materials and plants. And it has the following remarkable advantages of: operating without power, reducing construction cost, having very good pertinency, able to obtain COD removal rate of about 10%, TN removal rate of 10%-20%, and TP removal rate of 20-40%.

The invention discloses a groove bottom-reinforced fully lined debris flow drainage groove and a construction method thereof. The groove bottom-reinforced fully lined debris flow drainage groove comprises a fully lined drainage groove bottom plate and drainage groove side walls on the two sides of the bottom plate; a plurality of submerged sills which pass through along the drainage groove transversely, are connected with the drainage groove bottom plate, are distributed at intervals, and have a certain effective burial depth are arranged in the foundation and below the drainage groove; the submerged sills at the inlet and the outlet of the drainage groove are deepened submerged sills, and the submerged sills at other positions of the drainage groove are common submerged sills; and the effective burial depth of each of the deepened submerged sills is larger than that of each of the common submerged sills, and the deepened submerged sills extend to the bottom of the foundation of each of the drainage groove side walls on the two sides so as to form a triangular wedge-shaped body respectively. Compared with the prior art, the groove has the advantages of making full use of the bed-reinforcing effect of the submerged sills, reinforcing the bottom of the drainage groove in sections, avoiding danger to the entire drainage groove due to the damage of local drainage groove bottom, guaranteeing the operation safety of the drainage groove adequately, increasing small working amount and saving a large amount of engineering maintenance cost, along with low construction cost.

A wall-building unit for use in the construction of sandbag-type walls for erosion control, slope stabilization and similar applications comprises an inner bag filled with a fill material and an outer bag extending longitudinally over it so that the bottom of the outer bag is adjacent to and covers the open top edge of the inner bag. The wall-building unit holds more fill material than a conventional sandbag.

A structure for diverting fish away from water intakes comprises a porous dike having a bottom portion, a central portion, and a top portion, the top portion preferably being submerged a short distance below the surface, and the central portion having flow passages. In a preferred embodiment, the top and bottom portions comprise solid blocks and the flow passages in the central portion are lined with zebra mussel resistant sleeves to minimize clogging. Preferably the sleeve can be readily replaced as desired.