Floor antierosion bottom and method of installation
The invention relates to hydraulic structures. Designed to restore the blurred surface of the bottom and protect the bottom of water bodies from erosion by the flow of water, in particular on the underwater pipeline. The coating contains the rug repeatedly bent in opposite directions strips reinforced elastomer, bonded together in a checkerboard pattern, and forming in the working position grid cells. The carpet is connected at the edges turned under and against the flow of water, with anchors in the form of hollow cylinders with ballast. Between an armature connected to ends of two flexible straps, to which is also attached the carpet. Anchors are equipped with remotely controlled valves or flexible piping with remote disconnection, for filling cavities with ballast. In the transport position, the coating is a package of strips, tied in place with anchors in a single transport block. The method of installation is via boats, set across the current and fixed two cables from the winches. For installations that use the crane on boats and two cable winches. Installation is made using the impact of water flow on repeats to the anchors with remote disconnection. The invention allows to reduce the amount of installation work, to increase the speed of construction coverage and reliability protect the bottom of reservoirs. 2 S. and 4 C.p. f-crystals, 9 Il. The invention relates to hydraulic structures. Designed to restore the blurred surface of the bottom and protect the bottom of water bodies from erosion by the flow of water, in particular for surface restoration and protection of the seabed over an underwater pipeline laid under the bed of the river channel.Known floor foreshore and bed of rivers and canals (for protection from erosion over) of concrete elements connected by metal rods and concrete elements in the form of parallel bars connected by a wire ribbon, stacked perpendicular to the flow at a distance equal to 4,5-5,4 height of the bars from each other, with fixation to the shore, only the upper ends of the tapes (and.with. SU 296852, E 02 3/12).A disadvantage of the known device and method of its installation, determined by the design of the device is a low degree of readiness for use at the installation site, the lack of industrialization of works on installation method, the need for additional work in support of the fastening device is its walls. This is explained as follows: factory-made only concrete beams, and the device itself, in General, is collected from these boards at the installation site, by lowering the beams separately at the bottom along the guide poles. In this craft, from which you are installing, you must move after lowering each beam across the current, along the tape, which is extremely difficult, especially when a large flow rate, and then after Assembly of the tape to move with the flow on the step between the tapes. If Nude washout pipe are likely to damage the insulation of the pipe and its wall at a possible reset of timber from the blow pipe.Famous film screen for laying in the bed of the water craft, comprising a strip of film, provided with a lining attached to the strip on one side and overlying the openings in the film (and.with. SU 937601, E 02 3/12).A disadvantage of the known device is that the design prevents the healing of the seabed at the site of erosion, which leads to the need for additional landfill space washout. Is not a product of full factory readiness for use as an anchor for fastening the lower end of the band coming up with the unwinding of the strip from the drum during movement of the watercraft under the influence of the water flow in the pond.The disadvantage of this method is that it does not provide for measures to control the position of the craft in the direction of the reservoir, which in the case of oblique, rock and circular currents leads to displacement of the craft from the axis of the packing strip and its bias. While it is impossible to regulate the tension of the strip, because it is not a device for controlling the unwinding of the strip from the drum.Closest to the claimed invention to the technical essence and the achieved results on the device is antierosion cellular coverage AARP (see Rakhmatullin N. M. and other Experiences using antierosion cellular coverage AARP with the repair of underwater crossings LLC Sumatrensis””//Science and technology in the natural gas industry, 2001, № 1, p.56-58).The device consists of a continuous carpet of geogrids, stitched together and filled with inert material: crushed stone, gravel, small stone.Geogrid AARP runs out of rubber bands width (height) of 0.1-0.15 m, repeatedly bent in opposite directions and bonded together in a checkerboard pattern.The device is installed in place of the erosion of the seabed above the pipeline with pontoons connected by cable with berytech the trench with backfill with crushed stone. Before installing the unit into place washout, over the pipeline is restored by backfilling the bottom.A disadvantage of this device and its mode of installation is incomplete factory readiness of the device for use, the likelihood of distortion of the geometry of the geogrid under the influence of currents during installation, because the possible extension of the geogrid with the flow is not restricted, low industrialization of the installation method, the inability to control stretching AARP on the site of erosion, the need for additional mounting and underwater engineering works to secure the carpet AARP.Closest to the claimed invention by the technical nature and are available on the installation method installation method is bottom coverage, including the formation of coatings by connecting its parts along the edges parallel to the axis of the cylinder, the winding of the coating on the cylinder, during his voyage on the water surface, keeping afloat and the direction of this cylinder to the beginning of the trench, where it should be placed, the unwinding of this cylinder while keeping it afloat and move this cylinder along the surface of the water in the trench, the pumping of water into the trench from tirelessy convex surface of the bottom cover, in order to facilitate the unwinding of the cover from the cylinder, and a convex surface passes from the cylinder to the bottom of the trench, while the axis of this cylinder is parallel to the surface of the liquid when the cylinder is wound, and a given axis parallel to the surface when the cylinder is operated, floats and spins, in addition, when water is injected to the floating cylinder exert a braking torque and braking force (U.S. patent 4475846, E 02 At 3/12, publ. 09.10.1984).The disadvantage of this method is the limited scope of its application, since the method is designed for installation of bottom coverage only in the pond, confined by the walls of the trench, with calm water, with little or no current, due to the use of boats with Autonomous locomotion and use of impact artificially created by pumping water currents. Application of a known method on the reservoir over the water, where possible erosion of the seabed over the water and you want to restore a blurred bottom and its protection from further erosion (this is the aim of the invention) is unacceptable.The reason is as follows.There is no need for pumping water to created the p>Moving cylinder (end cover) end of the trench( i.e., in the place where he's supposed to be in the process) carried out by moving vessels associated with the cylinder, a reservoir with a fast flow of water, especially full of eddies, eddy and side (back) flows, moving exactly along the planned trajectory boats with offline (not connected to the shore) the mover is difficult and there is always the risk of accidental unpredictable pre-displacement boats against the current from the intended trajectory. This leads to improper installation of the bottom cover.Another disadvantage of this method is that the coating is assembled at the installation site, and not in advance at the factory. This deficiency significantly reduces the level of industrialization of the way and increases the cost of works due to additional Assembly operations coverage.The technical objective of the claimed invention is to provide a coating antierosion bottom to protect the bottom from erosion by the flow of water, the construction of which has the ability samozakravatayasa at the bottom due to the use of force against a possible shift under the influence of water flow, or ovci, using boats and the impact of water flow on the floor to stretch and accommodate him in the protection of the bottom, with a minimum of installation work, a high degree of industrialization of the installation method and the complete absence of underwater technical works.The technical problem on the device is solved due to the fact that the coating antierosion bottom mainly to protect the bottom of water bodies from erosion by the flow of water and recovery of the seabed at the location of silt containing the rug repeatedly bent in opposite directions strips reinforced elastomer, bonded together in a checkerboard pattern, and forming in the working position grid cells in the form of rhombuses, rectangles, squares or hexagons, and in the transport position - extended service bands, according to the invention a carpet bonded at the edges turned under and against the flow of water, with anchors in the form of hollow cylinders with ballast, in the transport position obsesively together with service bands in a single transport unit, connected to ends of two flexible straps, the length of which is equal to the length of the carpet, and the carpet is attached on each side of the tie-rods, anchors are installed one above the other below the protection of the bottom, with radosti water or through flexible pipes with the ability to remotely disconnect from anchors, heavy liquid filler as ballast. In addition, the quality of the carpet is used geogrid strips of non-woven synthetic fabric, bonded together in a checkerboard pattern, in expanded form forming a flexible framework in the form of a honeycomb.The technical problem is also solved due to the fact that by way of installing cover antierosion bottom, including the use of boats and the impact of the water flow to accommodate the coating according to the invention the boats come upstream from the installation site and connect with the side facing upstream with the soil at least two cables from the winches, and from the side, facing downstream, two cables from the winches lowered, with the ability to remotely disconnect at the bottom above the place of installation of the anchor, the upper stream, the other anchor, downstream, hang with remote disconnection, crane vessels, down to the bottom and at the same time to move on for the craft using grazing winch cables connecting the craft to the ground and the top of the anchor, and thereby stretch and stack cover the frame detach, with floats, floating separat in place, release the cables of the crane, loosen lower anchor in the stream to the stretching of the cover, disconnect it from floats and ropes of the crane and put the cover in place protect the bottom, and the lower anchor impart positive buoyancy, go on over to the stretching of the cover, fill the cavity of the anchor ballast disconnect the cables of the crane and put the cover in place protect the bottom.The invention is illustrated by drawings: Fig.1 - floor installed in place of washout; Fig.2 - type of coating in the working position in plan; Fig.3 is a fragment of the cover; Fig.4 - type of coating in the transport position; Fig.5-6 - image process samosokhraneniya anchors for the bottom; Fig.7 - the installation process of the cover; Fig.8 - the installation process of covering with strong currents; Fig.9 is a view in plan coverage using as carpet geocells.Floor antierosion bottom (hereinafter floor) consists (see Fig.1) of the carpet 1, is bonded with the top on for 2 and a bottom 3 anchors in the form of a hollow cylinder, is mounted taut over the washout 4 of the bottom 5, which can result in destruction of over loose ground over 6 underwater pipeline 7. Coverage zastoi from strips 8 reinforced elastomer, repeatedly bent in opposite directions, connected in a checkerboard pattern between a neighboring strips 9) using fasteners 10 type clamps or multilayer bandages.Anchors 2 and 3 are hollow cylinders with a cross-section of circular, square, triangular or other shape, filled with ballast.The Mat 1 is associated with anchors 2, 3 clamps or multilayer bandages 11. Anchors 2 and 3 are connected to ends of two flexible ties 1-2, limiting the stretching of the carpet 1 than necessary. Carpet 1, in turn, is connected with the screed 12. In the working position the carpet 1 is a flexible structure in the form of a lattice with cells 14 different form in the form of a rhombus, rectangle, square, hexagon.In transport position the floor (Fig.4) linked into a single transport block of the carpet 1 in the form of a package of 15 strips 8 and anchors 2 and 3.The coating is as follows.Installed on the bottom of the reservoir on the site of erosion 4 or plot of the bottom 5, you need to protect the surface of the bottom 5 from erosion by the flow of water, cover the lattice with cells 14 creates an additional hydraulic resistance to the flow of water in the bottom layer flow. The speed of induction is the flying boot from the surface of the bottom 5, thus it is to protect the surface of the bottom 5 from erosion by the flow of water. From halted near-bottom layer of water flow settle the soil particles brought by the flow from areas upstream of the installation, and fill in the cells 14 of the Mat 1, thereby creating, in conjunction with the coating non-blurry protective layer above the protected location of the bottom 5. When installing the cover over the washout 4, for example at the place of laying an underwater pipeline 7, where the bulk soil 6 most susceptible to erosion, soil particles from hindered the bottom layer of the stream carried them from locations upstream, precipitate and fill erosion 4, thereby restoring the bottom surface 5, and the cell 14, creating together with carpet 1 non-blurry protective layer over the underwater pipeline 7.From practice it is known that any item on the bottom of the reservoir with time immersed in the bottom (zabyvaetsja) under the action of water currents. This is explained as follows in the example of the coating. Anchor, such as upper, 2 (Fig.5 and 6) has a resistance of bottom water flow, due to which it creates a pressure drop of water in the layer flow, which is implemented in acceleration layer 16 of the flow of water between the armature 2 and the bottom 5. Under the anchor 2 is intensiveness this happens as long until filled cells 14 of the Mat 1 soil. When filled with soil cells 14 of the Mat 1, the process is stopped. Thus there is samosogrevanie coverage at the bottom due to the force of the flow of water from possible shifts under the influence of water flow in flood or scrapers made for barges or rafts.The weight of the anchor 2, 3 ballast can reach significant values, depending on the rate of flow of water in the reservoir, the size of the Mat 1. In order to be transported from factory excess weight, the filling of cavities anchors 2, 3 ballast can be done on the spot by the pond, or to equip the anchor 2, 3, remote-controlled valves (on the drawings conventionally not shown) for filling cavities with water as ballast on the reservoir during installation in order not to overload the lifting technique. You can also fill through these valves using flexible tubing, with the ability to remotely remove them from the anchor 2, 3, heavy liquid filler, such as heavy concrete and not hardening solution non-corrosive heavy materials, so that in the latter case and in the case of water, it was possible to release the armature 2, 3 from the ballast if necessary, lift the cover from the bottom of the reservoir, facilitate(Fig.9) from strips of non-woven synthetic fabric, sewn in a checkerboard pattern between a and forming the expanded flexible grid.The installation method of coating antierosion bottom is as follows: vehicle 19 (Fig.7) set across the current and connected with two cables 20 and winches 21 by boats 19, facing upstream, with the shore or the bottom of the reservoir. This is achieved by precise fixing boats 19 against the bottom 5 of the reservoir regardless of the impact of the water flow, which is a prerequisite and a major determinant for precise placement of the cover in place protect the bottom, unlike the prototype. Valve 22 is hung from the bottom anchor 3 transport unit cover, the upper anchor 2 mesh two cable 23 with the winches 24 by boats 19, facing downstream. The valve 22 and wires 23 are connected to a floor with the possibility of remote detach from the anchor 2 and 3. Dismiss the transport unit cover. The upper anchor 2 is lowered to the bottom of the upstream sexyshemale seat bottom 5 or erosion 4. Anchors 2 and 3 are loaded in advance ballast or fill them by remotely operating the valves during installation.This variant of the method of installation is designed for techeniya 1, arising from the interaction of the sail of the Mat 1 and pressure of water flow. Venting cables 20 with winches 21, cables 23 with winch 24 to move the craft 19 downstream, pulling the floor, while valve 22 is lowered the lower anchor 3, so that the tension of the carpet 1 not budge upper anchor 2, while the lower anchor 3 is lowered to the bottom 5. After that remotely disconnect the cables 23 from the top of the armature 2, the valve 22 from the bottom of the armature 3. Flooring installation is complete. The position control of the coating on the bottom 5 is carried out using the signal floats, or by using radio beacons installed on the floor or sonar methods. Correction of installation can be carried out by shifting the upper anchor 2 until odoemene cables 23, which is carried out by moving the craft 19 with the help of cables 20 and winch 21. Excessive tension of the Mat 1 in this case prevent the flexible screed 12. In the case of a large flow rate setting of the coating is as follows.Vehicle 19 separat in one place cables 20 using the winch 21. To the lower anchor 3 attach the floats 25 and the valve 22, to the upper anchor 2 - cables 23 with winches 24 with remote disconnection. Lower valve 22 transport bsearch bottom 5, above the place where it is held by cables 23 on the spot from shear under the force of the Mat 1, arising from the interaction of its sail over. Lower the anchor with 3 floats 25 down-stream down by venting the cables 23 of the valve 22. When the positive buoyancy of the lower armature 3, the presence of floats 25 is not necessary. When reaching the bottom anchor 3 end position from him disconnect the floats 25 and cables 27 of the valve 22, when the positive buoyancy fill the cavity of the anchor 3 ballast. Lower the anchor 3 is lowered to the bottom 5, while the current pulls the floor, but the tension is no longer able to move the upper anchor 2, as the windage of the Mat 1 has decreased to a minimum. After you disconnect the wires 23 from the top of the armature 2. The floor is installed. Control and correction of the position of the coating produced in the same manner as described above.Use anchored in the soil boats 19 allows high precision and quality to set the coating on the place of protection of the bottom 5, as opposed to the prototype pinned craft 19 accurately fixed at a given location, regardless of the impact of flow. Using the impact of the natural flow at the craft 19 and the floor for ustanoviti works since there is no need for pumping water to create an artificial current.Therefore, it is proposed bottom floor, capable samozakravatayasa at the bottom of the reservoir through the use of impact water flow, to restore the blurred bottom surface and protect it from erosion in the future.How to install flush the covering provided by the design of the coating using anchored in the soil of the craft and the impact of the water flow in the water body on the floor and craft for stretching and placing the cover in place protect the bottom surface with high precision).The use of the invention in practice will effectively and efficiently, in an industrial way, without conducting underwater engineering works to restore the eroded surface areas of the bottom from erosion by water.
Claims1. Floor antierosion bottom, mainly to protect the bottom of water bodies from erosion by the flow of water and recovery of the seabed at the location of silt containing the rug repeatedly bent in opposite directions strips reinforced elastomer, bonded together in a checkerboard pattern and the image is in the transport position - long service stripes, characterized in that the carpet is bonded at the edges turned under and against the flow of water, with anchors in the form of hollow cylinders with ballast, in the transport position obsesively together with service bands in a single transport unit, connected to ends of two flexible straps, the length of which is equal to the length of the carpet, and the carpet is attached on each side of the screed anchors installed downstream one above and the other below the protection of the seabed stretching the carpet over the place of installation.2. The floor under item 1, characterized in that to fill cavities anchors water or heavy liquid filler as ballast anchors are remotely controlled valves or flexible piping made with the possibility of remote detach from the anchor.3. The floor under item 1 or 2, characterized in that the quality of the carpet used geogrid strips of non-woven synthetic fabric, bonded together in a checkerboard pattern so that in the expanded view, they form a flexible framework in the form of a honeycomb.4. The installation method of coating antierosion bottom, including the use of boats and impact the flow of water to accommodate the coating, characterized in that the boats have a higher p the AMI with winches, and from the side, facing downstream, two cables from the winches lowered with remote disconnect on the bottom above the place of installation of the anchor, the upper stream, the other anchor, downstream, hang out with the ability to remotely disconnect the faucet from the craft, down to the bottom and at the same time to move on for the craft using grazing winch cables connecting the craft to the ground and the top of the anchor, and thereby stretch and put a floor in place protect the bottom.5. The method according to p. 4, characterized in that the downstream anchor link with remote disconnection with floats, floating separat in place, release the cables of the crane, loosen lower anchor in the stream to the stretching of the cover, disconnect it from floats and ropes of the crane and put the cover in place protect the bottom.6. The method according to p. 4 or 5, characterized in that the lower anchor impart positive buoyancy, let him go on over to the stretching of the cover, fill the cavity of the anchor ballast disconnect the cables of the crane and put the cover in place protect the bottom.
FIELD: building, particularly hydraulic structure reinforcement.
SUBSTANCE: method is performed in two-stages. The first stage involves forming vertical elongated flat ground massifs secured by hardening material. Massifs are created in crest embankment area and in upper area of embankment slope so that massifs are spaced minimal available distance from crest and pass through embankment body, including land-sliding upper embankment slope area. Massifs are anchored in mineral bottom by lower edges thereof and are arranged at least in three rows and there are at least three massifs in each row. Method for massifs forming involves driving double-slotted injectors directly in embankment ground or in wells formed in embankment and having plugged wellhead; orienting injector slots perpendicular to hydraulic pressure head vector direction in embankment area to be reinforced; injecting hardening material under increased pressure across horizons from top to bottom or in reverse direction, wherein injection is initially performed under 5-15 atm pressure and at minimal rate in each second injector of one outermost row beginning from extreme ones; feeding hardening material in previously missed injectors in this row; supplying injectors of another extreme row with hardening material in the same way; feeding hardening material to ejectors of medium rows under 10-20 atm pressure; performing the second reinforcement stage as material hardens to obtain 70% strength. The second reinforcement stage involves forming vertical elongated flat massifs of secured ground anchored in mineral bottom by lower edges thereof and arranged at least in three rows, wherein each one includes at least three massifs. Massifs extend at the angle exceeding embankment slope angle to horizontal line. Massifs are formed with the use of double-slotted injectors in remainder embankment area. Injector slots are directed perpendicular to hydraulic pressure head vector direction in embankment area to be reinforced. Hardening material is ejected in above succession, wherein hardening material pressure is equal to design process pressure enough for direction of feeding hardening material through injector slots and lesser than hardening material injection pressure of the first reinforcement stage.
EFFECT: increased reliability of structure reinforcement; prevention of land-slide on structure slopes.
3 cl, 3 dwg
FIELD: hydraulic structures, particularly for river channel bed reinforcement.
SUBSTANCE: means includes netted metal cylinders connected one to another to form integral reinforcement structure. Netted cylinders are made as cylindrical frames filled with shrubs or tree branches and secured by anchors to preliminary prepared base. Lower part of structure is deepened for depth increasing depth of possible bed erosion. Cylindrical frames may be oriented in transversal or longitudinal direction relative stream direction and may be formed of mesh grid wound around metal rings and connected to them or of rigid net having wire twisted in two-for-one manner between cells.
EFFECT: increased efficiency of bed protection against erosion, increased service life, reduced cost for structure erection and maintenance.
5 cl, 7 dwg
FIELD: hydraulic structures, particularly for river or channel banks and slopes consolidation.
SUBSTANCE: wall includes gabions formed of net and stones and laid in layers. Gabions are made as parabolic cylinders oriented transversely or along flow direction and connected one to another so that gabion ridges of upper layers are offset relative that of lower ones to which they are connected. Wall is covered with concrete from one side. Parabola in the base of parabolic cylinder is described by the following equation: Y = (4·hg·X2)/Bg , where X and Y are parabola abscissa and ordinate, hg and Bg are correspondingly gabion width and height, here Bg = (2 - 4) hg. Wall may be reinforced with reinforcing cage from another side. In particular cases net may have cross-section of stepped shape with decreasing steps width in upward direction or L-shaped cross-section.
EFFECT: increased reliability, reduced cost for foundation building, increased service life.
5 cl, 12 dwg
FIELD: hydraulic building, particularly for river and channel banks consolidation.
SUBSTANCE: method involves laying gabions filled with stones on prepared base located on slope along river bed. Gabions are made as gabion mats consist of connected elliptical tubular members. Tubular member bases are described by the following equation: (4·X2/B
EFFECT: increased efficiency and reliability of slope protection against erosion, increased service life.
5 cl, 10 dwg
FIELD: hydraulic engineering.
SUBSTANCE: invention can be used as bank strengthening structures in river and canal courses. Proposed fastening contains gauze metal cylinders with filled-up inner space connected to form solid fastening. Gauze cylinders of parabolic form are made by winding gauze over bush of tree branches laid on prepared base of slope and are secured on slope by anchors over line of contact of gauze and base. Lower part of fastening is dipped to depth exceeding depth of expected degradation. Parabolic cylinders can have crosswise or longitudinal orientation relative to direction of stream. Said parabolic cylinders can be made of woven gauze or rigid gauze with double twisting of wire between meshes.
EFFECT: improved efficiency of protection of banks, increased service life of construction, reduced construction and service expenses.
5 cl, 6 dwg
FIELD: hydraulic engineering, particularly for ground consolidation, namely for embankment slopes protection.
SUBSTANCE: coating is formed of polymeric fiber material and of fertile ground mixed with perennial grass seed. The coating is formed as mats sewed or joined with the use of heat. The mats are filled with mixture including fertile ground, perennial grass seed and polymeric wool taken in amount of 3-5% of fertile ground mass. Fiber material thickness is 2-5 mm, fiber density of the material is 0.01-0.12 g/cm3. Diameter of fiber material and wool fibers is 5 - 40 μm.
EFFECT: reduced cost, increased reliability of slope protection.
FIELD: hydraulic structures, particularly for slope and river or channel bank consolidation.
SUBSTANCE: support wall includes gabions made of gauze and filled with stones. The gabions are laid in layers. Support wall is fastened with gauze anchors to ground embankment from another wall side. Gabions are made as parabolic cylinders connected one to another so that ridge of each upper gabion is offset relative that of previous lower ones to which above upper gabions are connected. Support wall base is protected against erosion by flexible reinforced concrete apron. The wall is covered with concrete coating from working side thereof. Gauze anchors may be continuous or discrete. Number of continuous anchors is more than one.
EFFECT: increased load-bearing capacity and reduced cost.
4 cl, 7 dwg
FIELD: securing of slopes or inclines, particularly for ground slopes and water pool banks stabilization, for artificial water pool building and reconstruction, for minor river recovery and erosive slope consolidation.
SUBSTANCE: method involves performing masonry works of building members by laying building member layers in alternation with fabric layers. The building members are rough stones, which are connected one to another by fabric impregnated with binding material to provide elastic connection areas between stone layers. Ground stabilization device comprises masonry formed of building members alternated with fabric layers. The building members are rough stones, which are connected one to another by fabric to form elastic connection areas between stone layers.
EFFECT: increased environmental safety, improved appearance and technological effectiveness, increased elasticity of stone connection.
16 cl, 3 dwg, 2 ex
FIELD: hydraulic and irrigation building, particularly to protect banks of rivers, channels, dam slopes and other structures against erosion.
SUBSTANCE: bank-protection structure consists of shafts fixed in gabions from lower ends thereof. The gabions comprise nets filled with stones and have cylindrical shapes built below eroded zone level. The shafts are vertically installed in the foundations in one or several rows. The shafts are spaced apart and installed in direction parallel to river flow. The shafts are trees or reinforced concrete posts fixed inside the gabion by stones. The cylindrical gabions are connected to net laid along river flow in horizontal plane. Space between vertical shafts and bank may be filler with trees or bushes. Cylindrical gabion tops may be covered with concrete.
EFFECT: increased efficiency of bank protection and extended service life of bank-protection structure.
6 cl, 5 dwg
FIELD: hydraulic and irrigation building, particularly to protect banks of rivers, channels, dam slopes and other structures against erosion.
SUBSTANCE: bank-protection structure consists of transversal heels created as shafts fixed in gabions from lower ends thereof. The gabions comprise nets filled with stones and are formed as cylindrical foundations built below eroded zone level. The shafts are installed in the foundations in one or several rows. The shafts are spaced apart and installed in direction transversal to river flow. The shafts are trees or reinforced concrete posts fixed inside the gabion by stones. Depth of gabion embedding in ground increases in direction from the bank.
EFFECT: increased efficiency of bank protection and extended service life of bank-protection structure.
5 cl, 6 dwg