The present invention relates to a polymer expanding material in infiltration or seepage multi-water environment and a preparation method thereof, belonging to a technical field of polymer expanding foam materials. The polymer expanding material includes the following parts of materials by weight: 20-30 parts of rosin polyester polyol, 20-50 parts of isocyanate, 20-40 parts of PhireGuard MB-512, 5-10 parts of HFO-1233zd, 1-2 parts of surfactant, 0.01-1 part of catalyst, and 0.01 parts of benzoyl chloride. The present invention has high sand fixing body strength, fast curing speed, good elastoplasticity, good pouring property and permeability, and good expanding property, which is suitable for infiltration or seepage multi-water environment, especially for dam infiltration, piping, and other problems during construction and subsequent operation of water conservancy projects.

A tunnel system includes at least two adjacent tunnel lining systems and a sealing system. Moreover, the tunnel lining systems can include plural tunnel lining segments.

A repair system for existing aquatic walls including seawalls, channel walls other water barriers includes a laminate sheet constructed of a fiber reinforced polymer that is adhered along its perimeter and bolted to the surface of an aquatic wall. An annular gap is formed between the adhered/bolted laminate sheet and the aquatic wall, and that gap is injected with an exothermic bonder that connects the laminate sheet to the aquatic wall.

Described are various embodiments for coupling devices for dock installations.

Described are various embodiments for coupling devices for dock installations.

A membrane-lined wall for levee reinforcement or leak prevention, prevention of water migration, and pollution control of impoundments. The membrane-lined wall generally includes a cementitious or concrete wall formed within an excavated trench. The concrete may be internally reinforced, and the wall may also comprise a double-layer of impermeable geomembrane liner that forms a barrier between the concrete and the sides and bottom of the trench. The membrane or liner reduces water migration, prevents levee leakage, and prevents the escape of contaminants in impoundments.

A membrane-lined wall for levee reinforcement or leak prevention, prevention of water migration, and pollution control of impoundments. The membrane-lined wall generally includes a cementitious or concrete wall formed within an excavated trench. The concrete may be internally reinforced, and the wall may also comprise a double-layer of impermeable geomembrane liner that forms a barrier between the concrete and the sides and bottom of the trench. The membrane or liner reduces water migration, prevents levee leakage, and prevents the escape of contaminants in impoundments.

The present invention discloses a quickly-detachable airbag-type floating breakwater, including a plurality of water wave absorbing structure units arranged along a length direction of the breakwater. The adjacent water wave absorbing structure units are connected by a connecting unit. The water wave absorbing structure unit comprises at least two floats arranged side by side and a wave absorbing plate located between the floats. The water wave absorbing structure unit comprises at least two floats arranged side by side and a wave absorbing plate located on the floats. The connecting unit comprises bases located at the ends of the floats, an airbag located between the adjacent bases, and a steel chain, the adjacent bases wrapping the airbag to form a buffer connecting structure. Adjacent water wave absorbing structure units can be quickly and conveniently assembled by a connecting unit, thereby simplifying the difficulty in a breakwater building and construction installation process, improving the post-maintenance convenience of the breakwater, and reducing the post-maintenance cost. The connecting unit adopting a buffer connecting structure formed by wrapping the airbag with the bases can effectively alleviate movement, extrusion and torsion between adjacent breakwaters.

The present invention discloses a quickly-detachable airbag-type floating breakwater, including a plurality of water wave absorbing structure units arranged along a length direction of the breakwater. The adjacent water wave absorbing structure units are connected by a connecting unit. The water wave absorbing structure unit comprises at least two floats arranged side by side and a wave absorbing plate located between the floats. The water wave absorbing structure unit comprises at least two floats arranged side by side and a wave absorbing plate located on the floats. The connecting unit comprises bases located at the ends of the floats, an airbag located between the adjacent bases, and a steel chain, the adjacent bases wrapping the airbag to form a buffer connecting structure. Adjacent water wave absorbing structure units can be quickly and conveniently assembled by a connecting unit, thereby simplifying the difficulty in a breakwater building and construction installation process, improving the post-maintenance convenience of the breakwater, and reducing the post-maintenance cost. The connecting unit adopting a buffer connecting structure formed by wrapping the airbag with the bases can effectively alleviate movement, extrusion and torsion between adjacent breakwaters.