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 method for building a drainage well in a loose granular soil is disclosed. The method includes inserting a liner tube into a loose soil using an inserting device. The liner tube includes a housing and an internal shaft placed inside the housing and coupled to inside the housing via a locking mechanism. Subsequent to insertion into the soil, the internal shaft is unlocked from the housing and removed therefrom. Thereafter, a grooved pipe is inserted inside the housing using the inserting device. Subsequent to the grooved pipe insertion into the housing, the housing is removed from the loose granular soil using a mechanical excavator and a space between the loose granular soil and the grooved pipe is filled with a filling material.

A method for building a drainage well in a loose granular soil is disclosed. The method includes inserting a liner tube into a loose soil using an inserting device. The liner tube includes a housing and an internal shaft placed inside the housing and coupled to inside the housing via a locking mechanism. Subsequent to insertion into the soil, the internal shaft is unlocked from the housing and removed therefrom. Thereafter, a grooved pipe is inserted inside the housing using the inserting device. Subsequent to the grooved pipe insertion into the housing, the housing is removed from the loose granular soil using a mechanical excavator and a space between the loose granular soil and the grooved pipe is filled with a filling material.

A wick drain shoe assembly adapted to be connected to a free end of a length of wick drain material and driven by a mandrel of a wick drain insertion system comprises a base portion, an extension portion secured to the base portion, and a wick drain shoe gasket. The wick drain material is connected to the wick drain shoe by securing the free end to the extension portion. The base portion is sized and dimensioned to engage the mandrel such that displacement of the mandrel in a first direction causes displacement of the wick drain shoe in the first direction. The wick drain shoe gasket is arranged between the mandrel and the base portion.

A ground stabilisation system is used for stabilising a subgrade region which includes a peat layer under a railway having rails supported across rail ties on a ballast layer over the subgrade region. The system uses a plurality of drain members submerged in an upright orientation within the peat layer of the subgrade region in which each drain member has a hollow interior and a plurality of openings therein which allow communication of fluid from the peat layer surrounding the drain member into the hollow interior of the drain member so as to be arranged to reduce fluid pressure in the peat layer when the peat layer undergoes dynamic loading from a passing train. Each drain member is a semi-rigid pipe having an axial stiffness greater than a dynamic stiffness of the peat layer to reduce loading on the peat layer under dynamic loading from a passing train.

A horizontal-vertical drain board-flocculation vacuum preloading sediment treatment method, including (1) electro-osmotic electrodes disposed on the top and bottom of each reinforcing bar of the reinforced frame; (2) after the sediment is blown to the bottommost layer of vacuum preloading tank, the support is fitted over each reinforced frame, and the clips are fastened; (3) the transverse drain board passes through the support, one end of transverse drain board is connected to a curved tube; (4) repeat Step 2 and Step 3 until the sediment is blown to the surface layer of vacuum preloading tank; (5) a vertical drain board is arranged vertically between two adjacent rows of reinforced frames; (6) the curved tube is connected to the first junction block through the second junction block, and then the geotextile and sealing film are laid, the vacuum pump and power supply are switched on at last.

A wick drain shoe assembly adapted to be connected to a free end of a length of wick drain material and driven by a mandrel of a wick drain insertion system comprises a base portion, an extension portion secured to the base portion, and a wick drain shoe gasket. The wick drain material is connected to the wick drain shoe by securing the free end to the extension portion. The base portion is sized and dimensioned to engage the mandrel such that displacement of the mandrel in a first direction causes displacement of the wick drain shoe in the first direction. The wick drain shoe gasket is arranged between the mandrel and the base portion.

Shear drain devices are used to prepare ground with a weak soil layer to receive a static load, for example a structural foundation or a soil embankment, in which the ground includes a weak soil layer that consists of fine grained soils over a base layer. Each shear drain devices each include an elongate perforated pipe member, a surrounding reinforcement member providing tensile reinforcement and aggregate fill. The ground is prepared by (i) inserting the pipe members and reinforcement members in an upright orientation within the fine grained soils such that fluid in the surrounding soil can readily pass into the pipe members and (ii) subsequently placing the aggregate fill in the pipe members to occupy the hollow interior thereof such that the resulting shear drain devices increase a shear strength of the weak soil layer.

Shear drain devices are used to prepare ground with a weak soil layer to receive a static load, for example a structural foundation or a soil embankment, in which the ground includes a weak soil layer that consists of fine grained soils over a base layer. Each shear drain devices each include an elongate perforated pipe member, a surrounding reinforcement member providing tensile reinforcement and aggregate fill. The ground is prepared by (i) inserting the pipe members and reinforcement members in an upright orientation within the fine grained soils such that fluid in the surrounding soil can readily pass into the pipe members and (ii) subsequently placing the aggregate fill in the pipe members to occupy the hollow interior thereof such that the resulting shear drain devices increase a shear strength of the weak soil layer.

A sediment capping system is adapted to create, and distribute, a homogenized mixture of capping material. Where distributing the capping material, the system is configured to militate against the capping material forming clumps of a size and weight that would disturb the sediment on a bottom of a body of water. This in turn militates against the sediment being disturbed, and a disturbing of pollutants and toxins into the water surrounding the sediment. The sediment capping system militates against the clumping of capping material through a vibrating spreader and baffle system, producing a sediment cap with a more consistent depth that will minimally disturb the sediment on the floor of the body of water where the sediment cap is being deposited.