摘要:
A method for forming a geomembrane liner testable for leaks by securing adjacent panels together with the conductivity of the lower surface of an overlying panel broken along a line adjacent the panel overlapping edge, and the overlapping edges sealed along the line. A heat welder has slots for the overlapping panel edges, with a heated wedge between the slots and having a projection to break the conductivity of the overlying panel bottom surface as it passes the wedge. The slots merge to press the liner edges together to heat weld them along the line of broken conductivity as the welder is moved along the panel edges.
摘要:
Seabed scour about a seabed-mounted foundation or renewable energy device or anchor therefore, especially a wind-turbine monopile may be prevented or reduced by installing on or in the seabed area about the foundation or device an arrangement of interconnected sedimentation elements, which by virtue of the elemental structure or interconnective arrangement themselves do not cause or worsen seabed scour by substantially displacing seabed material on which the elements are placed. Elements having a specific gravity, either in situ or inherent, of substantially similar to the seabed material or mobilized seabed material in which they are placed are capable of achieving this. An ideal arrangement of elements (or mat) is one formed of used or discarded vehicle tires.
摘要:
A flexible mat forming system may include an elongate, rotatable drum having a plurality of transverse rows of mold cavities about an outer periphery thereof, an elongate hopper positioned adjacent the drum, the hopper shaped to receive a hardenable paste and deposit the hardenable paste along a facing row of the plurality of transverse rows of mold cavities, a spool assembly for feeding a sheet of mesh material between the hopper and the facing row, and a retaining plate extending partially about the outer periphery of the drum and positioned on a downstream side of the elongate hopper, the retaining plate spaced sufficiently close to the outer periphery to retain the mesh material against the outer periphery of the drum and the hardenable paste within the mold cavities adjacent the retaining plate.
摘要:
A method and apparatus incorporating erosion preventing mats or blankets having oyster spat are placed to prevent or reduce erosion. The method and apparatus incorporates seeding with oyster spat and/or oyster larvae onto a blanket having rough surfaces and comprising calcium. After seeding and setting natural growth of the oyster larvae can create a barrier that helps prevent erosion by breaking the kinetic energy of waves.
摘要:
The invention relates to a cutter and a method for making a barrier screen in a dike body for preventing soil particles. The cutter comprises: —a part that is oriented vertically when in use and that comprises a supply device for supplying to soil material of said dike body a binder for binding soil material that has been cut by said cutter, said vertically oriented part at a lower portion thereof being provided with chisels for cutting said soil material during a downward movement of said cutter; —as well as a part that is horizontally oriented when in use and that extends at both sides of said vertical part and wherein said parts that are provided at both sides comprise cylinders that are rotatable about a horizontal rotation axis and wherein said cylinders are provided with ground cultivating members for mixing soil material that has been machined by said chisels and said ground cultivating members.
摘要:
In one aspect there is provided a construct, mound, layer or brick which offers utility as an erosion control medium formed primarily from a blend of biomass, cementitious binder and water. In another aspect there is provided a construct, mound, layer or brick, which offers utility as a construction medium. Also provided are processes by which an aggregate of woody biomass (a blend of chips, particles and pieces), and a cementitious binder slurry can be applied by manual methods or spray applied by mechanical means. Upon drying the biomass construct conforms and binds to a ground surface providing a hard porous medium capable of adhering to a large variety of ground surfaces and to terrain of varied slope, pitch and constitution.
摘要:
Seabed scour about a seabed-mounted foundation or renewable energy device or anchor therefore, especially a wind-turbine monopile may be prevented or reduced by installing on or in the seabed area about the foundation or device an arrangement of interconnected sedimentation elements, which by virtue of the elemental structure or interconnective arrangement themselves do not cause or worsen seabed scour by substantially displacing seabed material on which the elements are placed. Elements having a specific gravity, either in situ or inherent, of substantially similar to the seabed material or mobilized seabed material in which they are placed are capable of achieving this. An ideal arrangement of elements (or mat) is one formed of used or discarded vehicle tyres.
摘要:
A wattle manufacturing system generally includes a hopper having an inlet for receiving a supply of straw, a loosening mechanism for loosening the straw when the straw is placed in or near the hopper inlet, a compaction chamber positioned to receive the loosened straw from the hopper, and a discharge conduit in communication with the compaction chamber. The discharge conduit may be in the form of a generally cylindrical tube, hereinafter sometimes referred to as an ejection tube, and generally includes a discharge end adapted to hold a netting material, for example a tubular shaped netting material, suitable to contain compacted straw. The netting material may be provided in a cartridge form which is structured to be coupled to the discharge end of the ejection tube.
摘要:
A wattle manufacturing system generally includes a hopper having an inlet for receiving a supply of straw, a loosening mechanism for loosening the straw when the straw is placed in or near the hopper inlet, a compaction chamber positioned to receive the loosened straw from the hopper, and a discharge conduit in communication with the compaction chamber. The discharge conduit may be in the form of a generally cylindrical tube, hereinafter sometimes referred to as an ejection tube, and generally includes a discharge end adapted to hold a netting material, for example a tubular shaped netting material, suitable to contain compacted straw. The netting material may be provided in a cartridge form which is structured to be coupled to the discharge end of the ejection tube.
摘要:
A cover reel assembly for laying down or retrieving a ground cover on the ground comprising a first frame attachable to a prime mover, the first frame having support arms to hold a cover reel rotatably, with a hydraulic pump between the prime mover and the first frame, between the first frame and support arms, or between the first frame and a second frame raise and lower the cover reel. The prime mover pushes the cover reel assembly forward to unwind a ground cover from the cover reel onto the ground, simultaneously laying cables or chains on top of the ground cover to hold the ground cover on the ground. The ground cover and cables or chains are rewound by a reverse procedure pushing the cover reel assembly forward. An alternate embodiment operates by pulling the cover reel assembly.