4results about How to "Avoid secondary construction" patented technology

The application discloses an underwater cutting device for offshore wind power steel pipe piles, which comprises a base, a lifting mechanism, a pile cutting mechanism, a stable support mechanism, a real-time monitoring mechanism and a remote control system. The base comprises an upper platform, a lower platform, a gear seat and a bearing seat fixed in the center of the bottom surface of the upper platform in sequence; the lifting mechanism comprises two winches fixed on the top surface of the upper platform; the pile cutting mechanism comprises a cutting platform, a platform rotating mechanism, a plurality of cutting oil cylinders and a plurality of plasma cutting torches; the stable support mechanism comprises four support oil cylinders fixed on the top surface of the lower platform; the real-time monitoring mechanism comprises an ultrasonic thickness gauge and an underwater high-definition camera arranged beside the plasma cutting torch; and the remote control system is respectively connected with the winches, the rotating speed sensors, the servo motors in the pile cutting mechanism, the controllers of the cutting oil cylinders, the ultrasonic thickness gauge and the underwater high-definition camera and the controllers of the support oil cylinders. The application can improve the safety of pile cutting operation.

The invention discloses a waste fishpond ecological restoration method based on an ecological corridor. The method comprises the following steps: surveying and mapping a waste fishpond; a biological corridor is constructed between the land and the fish pond to ensure the passage of terrestrial animals; an aquatic ecological corridor is constructed between the fishpond and the ocean, and tidal water is introduced to realize periodical fluctuation of the water level of the fishpond; pond ridge removal, slope cutting and tidal creek excavation are conducted on the interior of the fishpond, and a gentle slope area and a water power circulation system which are communicated with the ecological corridor are formed; shrubs are planted in different areas according to the elevation, the function of a fishpond ecosystem is restored, and continuous communication of a land-fishpond-marine ecosystem is achieved by building a biological corridor between a land forest and a waste fishpond and building an aquatic ecological corridor between a sea and the waste fishpond. Terrestrial animals can smoothly enter the mangrove forest restoration area of the fishpond through the biological corridor, and aquatic organisms can freely migrate between the ocean and the fishpond through the aquatic ecological corridor, so that obstruction of the abandoned fishpond to biological migration is effectively eliminated, and regional ecological connectivity is enhanced.

The utility model provides a water stop device for assembly type laminated slab, including the water stop section of polygon, the outer periphery of water stop section is provided with the wing ring, the bottom of wing ring lower surface to water stop section is embedded in the laminated slab prefabricated part, and the top of wing ring lower surface to water stop section is cast in the laminated slab cast-in-place part. In the assembly type laminated slab construction, the advantage of embedding rectangular water stop section is remarkable, its neat shape is highly adapted to the laminated slab prefabricated mould, can accurate positioning, reduces installation error and mould cost, the corner structure of rectangular water stop section and the concrete in the laminated slab prefabricated part form mechanical engagement, enhance the connecting strength of water stop section and laminated slab, and disperse stress.

The application discloses an H-ADCP installation position optimization method based on cross-section traversal scanning, which comprises the following steps: 1) selecting a cross-section to be installed, using a sailing ADCP to measure flow and synchronously observing water level under different water level stages or flow velocity stages, and calculating the average flow velocity of each cross-section; 2) importing the flow velocity data into a cross-section terrain model, dividing candidate units, traversing and extracting representative flow velocities, and generating a flow field and a standard deviation distribution diagram; and 3) comprehensively analyzing and determining the final position through multi-dimensional quantitative evaluation of flow velocity standard deviation, random uncertainty and correlation coefficient, combined with on-site conditions such as terrain adaptability and interference degree. The method disclosed by the application has high site selection efficiency and is suitable for H-ADCP installation site selection in rivers, lakes and other water areas, and is helpful to improve the online monitoring accuracy of river flow.