Systems and methods of restoring a lake including dredging, island creation, water treatment, real estate development, computer modeling of environmental conditions, wave height reduction, sediment removal and encapsulation, bathymetry contouring, littoral zone restoration, plant restoration, and/or fish restoration.

Systems and methods of restoring a lake including dredging, island creation, water treatment, real estate development, computer modeling of environmental conditions, wave height reduction, sediment removal and encapsulation, bathymetry contouring, littoral zone restoration, plant restoration, and/or fish restoration.

A dredging system for removing material under a structure may include a barge body including a plurality of barge sections, each barge section of the plurality of barge sections configured to selectively be fully submersed or partially submersed to adjust a height of the barge body. A dredging system for removing material under a structure may include a winch system attached to the barge body and including a cable. A dredging system for removing material under a structure may include a drag beam coupled to the barge body via the cable and configured to vertically move via the winch system between a deployed position and undeployed position.

A jetting system for an undersea trencher has jetting conduits extending aftward of its trench-cutting jetting swords. Jetting conduit nozzles direct liquid radially from their jetting conduits into the trench after the trench is excavated by the jetting sword cutting nozzles. The jetting conduits direct sufficient liquid into the trench to maintain the mix of trenched soil and water in the trench along the length of the conduits at not more than a super-critical density, extending the distance in which the product being laid in the trench is able to descend in the trench and increasing the likelihood that the product will be buried at the intended trench depth.

A rotary ditcher attachment is selectively mounted onto the bottom of an excavator implement. The rotary ditcher attachment has an attachment frame including a mounting bracket for releasable mounting onto a tool mount on the boom of the excavator implement. A rotary disc assembly on the attachment frame includes a rotor supported for rotation relative to the attachment frame about a disc axis, and a plurality of blades supported on the rotor for cutting into the ground as the rotor is rotated. A drive motor for driving rotation of the rotor relative to the attachment frame is supported on the attachment frame so as to be releasable from the boom together with the attachment frame.

A trash removal system for removing trash and debris from a water bottom is provided. The system includes a sled configured to ride along the water bottom, the sled including a jetting aeration system having nozzles which provide jets of pressurized air and water directed towards the water bottom; and a vacuum including a suction funnel adjacent the jetting aeration system which is configured to suck in trash and debris agitated by the jetting aeration system. The system further includes a conveyor configured at one end to receive the trash and debris sucked in by the suction funnel, and to transport the trash and debris to a surface above the water bottom.

A method of dredging which comprises suspending dredging apparatus 200 from a vehicle 360. The sediment agitating apparatus comprising a chassis 210, and mounted on the chassis are an extractor, sediment agitating apparatus and respective pumps 220, 230. The dredging apparatus 200 is disposed above, but not in contact with a waterbed 340 to be dredged of sediment 350. The sediment 350 is agitated then extracted with the extractor. The dredging apparatus 200 is moved around the water and the extracted sediment 400 is deposited underwater and above the dredging apparatus 200, so that the sediment 400 is transported and deposited away from an area being dredged by the natural movement of the water. Apparatus and use of the apparatus are also described.

A system for dredging underwater sea-beds includes a floating platform; a dredging tool positioned on the platform to face the water and having a system that lowers and lifts the dredging tool, further having at least three connection points associated with the platform to connect the ends of warping cables that are anchored to the shore at the opposite ends, and further having tensioning devices; a sediment collection system that collects sediment captured by the dredging tool; a system detecting the position of the platform; a system detecting the position of the dredging tool; a system detecting seabed configuration; a system detecting the quantity of sediment removed from the seabed; a remote command and control system for the system that lowers and lifts the dredging tool, a tensioning system for the warping cables; a detection system; and a system that supplies the equipment on board of the platform.

A system for dredging underwater sea-beds includes a floating platform; a dredging tool positioned on the platform to face the water and having a system that lowers and lifts the dredging tool, further having at least three connection points associated with the platform to connect the ends of warping cables that are anchored to the shore at the opposite ends, and further having tensioning devices; a sediment collection system that collects sediment captured by the dredging tool; a system detecting the position of the platform; a system detecting the position of the dredging tool; a system detecting seabed configuration; a system detecting the quantity of sediment removed from the seabed; a remote command and control system for the system that lowers and lifts the dredging tool, a tensioning system for the warping cables; a detection system; and a system that supplies the equipment on board of the platform.

A treatment method for a river system in a reservoir area, comprising: S1. determining whether a time from a current date to the rainy season is less than a preset duration; S2. moving a pressure sensor upward; S3. determining whether the pressure data meets corresponding conditions; S4. determining whether a duration of the pressure data is less than the preset duration; S5. determining whether an interval between the current time and the time for collecting pressure/nitrogen and phosphorus is greater than a preset number of days; S6. acquiring an image information of a river bottom, and sending it to neural network model for identification to obtain a depth of a sludge; S7. determining whether the depth of a sludge has reached a dredging depth, if so, starting a sludge pump to clean up; S8. collecting nitrogen and phosphorus concentration, and removing nitrogen and phosphorus when the concentration exceeds a standard.