Method for creating impervious coating with bentomates on subsiding soils
SUBSTANCE: invention relates to the field of hydraulic engineering and can be used when creating the impervious protection of water entities, canals and reservoirs of industrial wastes made on subsiding soils. Ground base is prepared. Bentomate mattress is laid. Revetment from concrete or reinforced concrete slabs is performed. In this case, strip of bentomate mattress is placed on mattress under the joints of concrete slabs. Width of additional strip of bentomate mattress depends on geological and subsiding soil properties.
EFFECT: high production manufacturability and simplification of works on creation of impervious coating is provided.
2 cl, 3 dwg
The invention relates to the field of hydraulic engineering construction and can be used to create cut-off protection of reservoirs, canals and storage of industrial waste on ground subsidence.
Know impervious floor channels (patent RU No. 2284390, 31.01.2005, the author Alimov A.G.), including laid on a prepared base of anti-heaving preparation, the surface of which a waterproof layer on top of which laid the lining of concrete or reinforced concrete, or reinforced concrete, or reinforced concrete with expansion joints. Along the perimeter of the channel anti-heaving preparation made ethnotaxonomy and multi-layer, while the conductive layers stacked in the upper part of anti-heaving training. Minimum, below the lower edge of the water in the channel, and the maximum, above the upper edge of the water in the channel, the thickness of the anti-heaving training under the trim set on mathematical dependencies.
The disadvantages of this method are the possibility of damage to the waterproofing layer, for example a polymeric material, when laying on concrete or reinforced concrete slabs, as well as the difficulty of performing ethnotaxonomy multilayer anti-heaving preparation and the relative high cost of coverage.
Known Bento is iMovie hydrobalance "Redstop", Waterstop RX101, Hydrotest (AQUASTOP)used for amplification of cold (working) seams. The company "PSM-Service date of posting on the website 08.03.2012, Electronic resource, the access mode is http:www.psmcentre.ru/pages_36/index.html.
Hydrobromide (bentonite cord, hydrostop) Redstop, Waterstop RX101, Hydrotest (AQUASTOP) is a harness rectangular section 15×25 mm or 19×25 mm, Hydrobromide Redstop (Waterstop RX101), Hydrotest is installed on a concrete joint surface or wrapped around pipes of different communications tightly, without gaps. The minimum distance from the edges of the insulated design 75 mm are Mounted using a special mesh, glue, dowels. Optional.
The disadvantage of this technical solution is the complexity of the manufacturability of works, which consists in fastening bentonite cord to the design (using adhesive, anchors, nets, and possible gusts harness with the drawdown of the base or crack formation. The small size of the bentonite cord (15×25 mm, 19×25 mm and others) do not allow to fully produce the overlap of an expansion joint. In addition, there is a limit (according to information provided by the Company "PSM-Service date of posting on the website 08.03.2012, Electronic resource, the access mode is http://www.psmcentre.ru/pages_37/index.html), proposed by hydrobalance WATERSTOP (Waterstop) bentonite cord hydrostop (REDSTOP), Bentonite cord Hydrotest, Hydrobromide WATERSTOP (Waterstop) type RX, REDSTOP (Resto) and bentonite cord Hydrotest (AQUASTOP), which are analogues of (hereinafter Waterstop), do not apply to seal deformation and expansion joints. In addition, the disadvantage of the proposed technical solution is the lack of economic efficiency due to additional acquisition costs bentonite cord, with its high cost.
The closest technical solution is the way to create impervious coverage, open Company "bencoprim", date of posting information on the website 20.06.2011, Electronic resource, the access mode is http://www.bentoprom.ru/products Bentomat "Taxben" application Guide, pp.2-6, Fig.1. The method includes preparing the ground, the device of the waterproofing layer and the laying of the facing of concrete slabs, at the same time on the prepared base to fit the mattress of their bentomat, consisting of layers of geotextile and a layer of bentonite compounds, preventing clay, on top of which are placed on the slab and wall waterproofing cord.
The disadvantage of the proposed method is the complexity of the manufacturing operations associated with the fastening of waterproofing cord to the structure.
The technical result is to increase the processability p is izvodstva works as well as reducing additional costs due to the use of strips of sintomatologia mattress, which can be cut off from the main sintomatologia mattress.
The width of the strips of bentomat (bpalm) will depend on the geological and subsidence of the soil properties and defined by the formula:
where bSW- the width of the weld, mm;
bDef- width of the region of deformation, mm;
bZap- stock strips of bentomat, bZap≥300 mm
The proposed method for the creation of impervious cover with bentonite on collapsible soils is illustrated in the drawings, in which:
figure 1 - floor planned on soil Foundation;
figure 2 - floor after the subsidence of the soil Foundation;
3 - define the width of the strips of bentomat.
The way to create an impervious coating is carried out as follows: on the prepared subgrade 1 stack entomology mattress with 2 piercing elements 11, separating the mattress 2 strips 10 (Fig 1). Mattress 2 in turn consists of a layer of the geotextile 3, 4, the layer of bentonite clay 5. Over sintomatologia mattress 2 under sitki concrete slabs 9 deformation seam 7 is placed a strip of bentomat 10 (1, 2).
In the case of deformation of the base 1 and crack formation 8 in deformation seam 7, water flows through a crack in a strip sintomatologia of the mattress 10, bentonite clay 5 swells, eliminating water leaks through the crack, and at the same time fills poplitea the space, eliminating the sagging of the plate and damage sintomatologia mattress 2 (figure 2).
The proposed method will provide high technology manufacturing operations, to reduce the cost of purchasing bentonite cord through the use of strips, which can piercing element to cut off from the main sintomatologia mattress and placed under the joints of concrete slabs.
1. The way to create an impervious coating bentonite on ground subsidence, including the preparation of the ground, laying sintomatologia mattress, laying the lining of concrete or ferroconcrete slabs, characterized in that the joints of concrete slabs on the mattress from bentomat placed a strip of sintomatologia mattress.
2. The method according to claim 1, characterized in that the width of the strips of bentomat will depend on the geological and subsidence of the soil properties and defined by the formula:
SUBSTANCE: invention relates to the field of construction and relates to a water impermeable membrane. It includes a barrier layer and an adhering layer. The sealing facility is arranged in the form of a grate between the adhering layer and the barrier layer.
EFFECT: invention makes it possible to create an improved water impermeable membrane and thus to reduce to the minimum propagation of cavities in a barrier layer and size of areas, where water leaked, and also to easier localise the damaged area.
16 cl, 7 dwg
SUBSTANCE: method to protect sunk buildings and structures against retaining flooding with groundwater consists in the fact that a distribution-filtration sand cushion is formed under the entire structure. It is equipped with an injection-washing system, with the help of which the cushion body is cleaned from clayey particles of natural mudding by groundwater washing having underwashing speed of filtration, which is developed by injection of compressed air under a foot of the underground part of the structure.
EFFECT: provision of preservation of protective properties of a distribution-filtration sand cushion against retaining flooding of an underground part of buildings and structures for the entire period of their operation, provision of preservation of natural hydrological conditions of a development area.
2 cl, 3 dwg
SUBSTANCE: method to eliminate water leaks in underground engineering utilities includes drilling of boreholes and injection of a strengthening hydraulic insulation composition into them. The strengthening hydraulic insulation composition is injected into previously drilled boreholes by means of separate supply of the following into the mixing nozzle under pressure of 0.2-1 MPa: a cement-water suspension with W/C=1-1.5 and liquid glass with density of 1.3-1.6 g/cm3 at the following ratio of specified mixtures accordingly, wt %: 75-90 and 10-25.
EFFECT: simplified technology of water leaks elimination in a defect hydraulically insulated zone of underground engineering utilities.
SUBSTANCE: method for water drawdown of vertical type in basement premises of residential houses, office and industrial buildings and storages includes organisation of a depression zone within the area of a basement premise due to installation of bore pits and a collecting-filtering trench. Inside the perimetre of the basement a collecting-filtering trench (well) is mounted having arbitrary shape, as well as bore pits, arranging the latter in the depression zone, formed by a collecting-filtering trench. Filtering material is laid into bore pits, and when loose, this material forms lower density compared to the main soil of the basement room, or perforated pipes are laid into bore pits as closed with a cover on top, wrapped with a filtering material and sprinkled with a material at the outer side, which does not contain lime. From the collecting-filtering trench at the level of its bottom a water-drain pipe is installed towards a well of a sewage or a storm water system, a check valve is installed into the water-drain pipe, or a device that prevents water ingress from a sewage or storm water system into the drainage system of the basement room. Upon completion of the drainage system assembly, the basement area is filled with a material, which does not contain lime or sand (for instance, with gravel or pebbles).
EFFECT: lower ingress of ground waters, reduced wear of engineering utilities and their increased service life, provision of soil skeleton reinforcement.
SUBSTANCE: underground part of a concrete wall with a wall drain comprises a filtering shell made of a polymer material and vertically laid onto the external surface of the wall to form channels draining water from soil fill into the fill of a drain pipe connected to a drain header. The external surface of the wall is coated with a geomembrane, which is arranged from a polymer material and with its anchor ribs fixed to the wall and forms its protective hydraulic insulation. The filtering shell is arranged in the form of a geogrid and a filtering nonwoven material attached to it at the side of the soil fill, at the same time geogrid cells are formed by crossing rods laid one onto the other and fixed in points of crossing with each other.
EFFECT: higher reliability and durability of a building or a structure, higher quality of wall protective hydraulic insulation and improved water-draining capacity of a filtering shell.
2 cl, 3 dwg
SUBSTANCE: drain of closed type comprises a deep-laid trench with an incline towards drain water discharge, where perforated pipes are installed in a layer of filtering material, and also inspection wells of the drainage system. Pipes are arranged with perforation in the tray part and are laid into a homogeneous filtering material. The bottom of the trench is arranged with an incline of 0.003-0.004% and is insulated with a water-impermeable film together with the trench wall at the side of a pit or along the outer surface of the underground part of the structure, and also with coverage of the drain trench filtration fill roof or under the foot of the erected structure shoulder.
EFFECT: increased efficiency of drain operation, reduced material intensity and labour intensiveness, increased manufacturability of construction processes.
SUBSTANCE: invention relates to construction and may be used to arrange drainage system to control water level in basement premises. Method for water depression in basement premises of dwelling houses, administrative-industrial buildings and storehouses includes digging drainage channels, assembly of precast filtering well, laying filtering material or perforated pipes with filtering elements into channels, installation of pump into well, which drains water from well and is equipped with connection and disconnection breaker. Drainage channels and precast filtering well are assembled in ground inside area fenced by house foundation, in order to create depression zone on area limited by house foundation. In case this area is separated by solid walls of foundation, or there are foundation screeds, shafts are drilled, which are also filled with filtering material, or in which perforated pipes are installed with filtering elements. Outlet hole of pump is connected to sewage system of the house. Connection of pump outlet to connection and disconnection breaker to sewage system of the building results in cleaning of pipes and joints in sewage system.
EFFECT: improved efficiency of water level control in basement premises and reinforcement of foundations with various configuration.
SUBSTANCE: method of protecting sunken buildings against ground water underflooding consists in the fact that distribution sand cushion is formed, highly compressed silty-clayed soils are removed from the whole underground part of buildings. When constructing underground parts of erected buildings on natural slopes in silty-clayed soils with high level of ground water, above lower boundary of design compressed mass of ground foundation, there developed is ditch, from the depth of lower boundary of compressed mass corresponding to level of lower edge of distribution sand cushion to day surface, the slopes of which correspond to position of planes of lower side edges of design distribution sand cushion which is formed as filtration one and designed in the outline of diagrams of equal vertical and horizontal stresses corresponding to stress of natural soil in lower part of compressed mass. Height of cushion is taken equal to design depth of compressed soil mass, and width of upper and lower edges of cushion is equal; at that, it exceeds width of foundation base on both sides by the value which is determined by graphical drawing of planes tangential to diagram of equal horizontal stresses at an angle to vertical plane, which is equal to angle of internal friction of cushion material to the crossing with plane of foundation base level. Position of side edges of cushion is determined by the planes being drawn from extreme points of upper and lower edges of cushion, which are tangential to diagrams of equal vertical and horizontal stresses till they cross each other; at that, inclination angle of tangential plane to diagram of equal vertical stresses is taken equal to angle of natural slope of natural soil. Then there formed is lower body of cushion in the volume of ditch slopes and upper body of cushion in the volume of upper side edges of cushion; after that, there performed is backfilling of cavities between upper cushion body and ditch slopes with natural soil as per layer-by-layer technology; then underground part of buildings is erected.
EFFECT: maintaining natural hydrological conditions in order to exclude dangerous ground water underflooding of underground parts of buildings, decreasing the scope of ground works concerning development of ditch, reducing material consumption.
SUBSTANCE: invention is related to construction, namely to fighting suffosion processes that occur during flooding of earth foundations in buildings, which are for instance, located in high-water bed. In method for protection of building earth foundations against suffosion processes that occur as a result of building flooding, wells are drilled in building foundations, soil in wells is sampled, specimens obtained are used to determine value of critical head gradient and critical seepage path. Water impermeable wall is erected in building earth foundation around the base, at that distance between the base and water impermeable wall, as well as depth of water impermeable wall location from daylight is selected depending on values of critical gradient and critical seepage path. Space between building base and water impermeable wall is filled with water permeable material consisting of single-size particles, and space between the base in the level of its underside and water impermeable wall is filled with the layer of water impermeable material. Drainage holes with meshes are arranged at internal edge of water impermeable wall in water impermeable layer, and filling with layer of water impermeable material is done with layer separation into sections, in every of which surface is arranged with slope to drainage hole providing water drain into hole.
EFFECT: increased efficiency of building protection against suffosion processes, and also increase of operational reliability of buildings, reduction of material intensity.
SUBSTANCE: invention pertains to construction, namely, to reconstruction and renovation of old buildings and constructions, in particular, to means and methods of intra - wall detaching waterproofing for walls protection from soil water. Composition for intra - the - wall waterproofing contains, wt %: potassium silicate with silica modulus 2.33 - 2.88 99.6-99.9, Trilon B 0.1-0.4. Method of intra - wall detaching waterproofing includes supply of the above said composition into brickwork through preliminary drilled holes periodically drying after supply according to the scheme: supply - drying - supply.
EFFECT: viscosity reduction, increase of filtration coefficient, improved detaching water - proofing characteristics for protection of walls from soil water.
2 cl, 2 tbl
SUBSTANCE: invention relates to the field of hydraulic engineering, civil and industrial construction and may be used in creation of anti-filtration structures in bases, on channels and water reservoirs and is aimed at increased reliability of design of an anti-filtration screen during its construction in several stages. A soil base is prepared, beds 1 of a hydraulic insulation geosynthetic material HIGSM. A unit of HIGSM bed 1 coupling is laid along the border 2 of the first phase of construction with the second phase of construction, marked on the surface with a tape 9 and including a reserve of the HIGSM bed 1 folded by two vertical folds 3 with length of 2.5 B, where B - installed working width of adhesion of HIGSM beds 1. At the same time inside the upper vertical fold 3 they install an anti-friction pad 5, which remains in design of the anti-filtration screen after recovery of construction, from material, the friction coefficient of which by HIGSM is less than the coefficient of friction of HIGSM layers friction along each other. Then the produced reserve of the HIGSM bed 1 on top is closed with a protective anti-friction pad 6, removed from the structure of the anti-filtration screen after recovery of construction, from a material that has friction coefficient by HIGSM and by soil less than friction coefficient between HIGSM and soil. Further the HIGSM bed 1 and its coupling unit 7 is on top filled with a material of protective layer 8 and is left to the moment of construction recovery. Free exit of the HIGSM 1 bed from the coupling unit 7 is provided due to anti-friction properties of pads 5 and 6.
EFFECT: increased reliability of design of an anti-filtration screen during its construction in several stages.
SUBSTANCE: for areas of surface subjected to impact of water and/or wind protective membrane (13) of resilient elastic sheeted plastic material is fixed to the bottom (12) and/or lateral area (11) of hydraulic works surface (10) by variety of point fixation (14, 15, 16) mechanisms. For this purpose a variety of places for point anchoring is defined for protective membrane (13). Section of point fixation mechanisms (14, 15, 16) is placed to structure of hydraulic works (11, 12) and/or ground, at that upper section of membrane protrude outside. Protective membrane (13) is laid at the area (11, 12) of protected surface of hydraulic works (10) with upper section of membrane fixation mechanisms (14, 15, 16) passing through respective holes in membrane (13). Ring seals and fixing plates are installed at least at one side of the membrane (13) adapted for ring-like friction surface. Anchoring of the membrane (13) is made at places of point fixation mechanisms (14, 15, 16) anchoring along parallel anchoring lines by pressing membrane (13) to the area (11, 12) of closed surface of hydraulic works in stretched state with transfer of force and/or stress acting on the membrane (13) to individual point fixation mechanisms (14, 15, 16), structure of hydraulic works and/or ground. Fixation system implemented in this method contains a variety of point fixation mechanisms (14, 15, 16) located longitudinally along anchoring lines. Mechanisms (14, 15, 16) are selected from fixtures contained both individually and in combination: anchor shaft with expanded wings; rod passing to the housing and containing hardened chemical compound; rod screwed into a tube with outer fining and embedded into cement grout; splice bar with anchoring moulded member pin-connected to splice bar.
EFFECT: increasing reliability of waterproof membrane fixation to hydraulic works.
5 cl, 6 dwg
SUBSTANCE: unit for sealing of joints of fencing structures in man-made soil islands includes two vertical slots on the ends of the joined structures, which create a shaft when slots are matched, gaps in which are closed with shields. The inner space of the shaft is filled with a filler. Shields are fixed by means of rotary hinges in slots of each joined structure and are made from a half-pipe. The free edges of the shields adjoining the adjacent structures are equipped with elastic sealing elements.
EFFECT: reduced time for erection of a contouring shell of man-made soil islands, provides for possibility to exclude a stiff joint between joined structures and higher reliability of protection of a soil core of man-made soil islands against erosion.
SUBSTANCE: method consists in maintenance of the level of industrial wastes within the circuit of the anti-filtration accumulator. For this purpose they previously detect density of high-mineralised industrial wastes and density of edge underground water. The distance is identified from the specified point of the bed to the arbitrarily chosen plane of comparison. The maximum permissible drop is defined between them, as well as water density in the specified point of the bed and the arbitrarily chosen plane of comparison. Maintenance of the level of high-mineralised industrial wastes in the anti-filtration accumulator is performed below the natural level of the edge underground (soil) water, and it is monitored by the value of the "given" pressure of the liquid phase of industrial wastes, and using the ratio Pgiv = hγ+z(γ+γ0)/2, where Pgiv - given pressure of liquid phase of industrial wastes, M·L-1·T-2; h - hydrostatic height (level) of liquid industrial wastes of heterogeneous composition in the accumulator bowl, L; z - distance from the specified point of the bed to the arbitrarily chosen plane of comparison, L; γ and γ0 - volume weight of water in the specified point and on the arbitrarily chosen plane of comparison, M·L-2·T-2. The anti-filtration accumulator for implementation of the method comprises a bowl, an anti-filtration screen, arranged on the bottom of the accumulator and in boards of the bowl, and a water-regulating systems from water-regulating wells. Additionally inside the bowl there are water-distributing wells, which are connected with a water-regulating device and a system of horizontal pipes.
EFFECT: higher reliability of protection against pollution of underground water with brines filtered from an accumulator and other liquid wastes of industrial production that are dangerous for human livelihood, possibility is provided for environmental stability of compositions available in a liquid wastes or brines accumulator and their finalisation to the appropriate technologically stable condition.
7 cl, 1 dwg
SUBSTANCE: method includes laying of a protective cover from mattress gabions and a water-impermeable anti-filtration element from geomembrane. Besides, on top of the geomembrane a protective pad is arranged from geotextile, preventing damage of the geomembrane during laying and filling of gabions and also during operation. Mattress gabions are laid onto the protective pad from geotextile with their fixation on steep slopes with the horizontal equivalent of 1:2-1:1.5 with the help of synthetic ropes fixed to metal stands arranged on the slope edge. Possibility is provided to use mattress gabions as a protective cover of anti-filtration liners in canals and water reservoirs with steep slopes with the horizontal equivalent of 1:2-1:1.5 without damage to water impermeability of the anti-filtration element and elimination of water losses via the anti-filtration lining.
EFFECT: increased operational reliability, safety and efficiency of a cover.
2 cl, 3 dwg
SUBSTANCE: method includes arrangement of antifiltration elements from flexible sheets 5 of a spent polymer material on a structure slope 1. Antifiltration elements are fabricated from recycled car tyres in the form of flexible sheets by means of their processing into rubber crumb of fraction from 1.0 to 3.0 mm and its mangling in the form of sheets of specified size. Flexible sheets 5 are laid onto the bottom 2 and slopes 1 of the canal or the water reservoir along the entire perimeter with glueing of seams and fixation of sheets for stability of the coating onto the slopes with metal pins 3 and in the upper part at the ledge 4 of the structure edge. Flexible sheets for convenience of transportation and arrangement are made with the following size: thickness - 1.0-2.0 cm, width - 1.0-1.5 m, length - 5.0-10.0 m, and rolled into rolls with the diameter of up to 0.5 m and weight of up to 500 kg. Application of flexible sheets from spent tyres due to their considerable thickness and high resistance to damage excludes the necessity to arrange protective coatings.
EFFECT: antifiltration coating has high repairability, and high flexibility of a coating provides for reliability of its operation under conditions of possible base deformations.
SUBSTANCE: proposed composite diaphragm 1 is arranged in the central part of a high rock fill dam. Between side prisms 2 from a rock mass and a diaphragm 1 there are transition zones 3. In the diaphragm base 1 there is a concrete foundation 4 deepened into a rock base. In the concrete foundation 4 there is a gallery to develop a cementation curtain 5. The upper 6 and lower 7 diaphragms are formed with metal sheets 8. External faces of metal sheets 8 are coated with a waterproof film 9. Metal sheets 8 are installed one onto the other and adjoining each other. The film 9 may be arranged in the form of a geomembrane from polymer materials, for instance, a PVC film, etc. In horizontal and vertical seams 10 the metal sheets 8 are welded to each other. The film 9 of adjacent sheets is connected to each other to form a solid waterproof contour. Connection of the film 9 in seams 10 may be arranged with adhesion, welding or overlapping of seams 10 with an additional film, and its adhesion to the film 9. Along the length of the upper 6 and lower 7 diaphragms there are vertical expansion joints, for instance, in the form of a semicircle. The inner cavity 12 between the upper 6 and the lower 7 diaphragms is filled with asphalt concrete. Metal sheets 8 of the upper and lower 7 diaphragms may be joined to each other by links 11, for instance, reinforcement joints.
EFFECT: erection of a high rock fill dam provides for high reliability of dam operation.
2 cl, 2 dwg
SUBSTANCE: mosaic hardening of damaged sections 2 of blanket deposits 1 is done with low-grade oil. Strengthened sections 2 are additionally fixed to lower layers with hollow anchors 3 from a thermally oxidated soil. Cavities 4 of anchors 3 are filled with substances that are biologically acceptable for reclamation works, seeds of perennial herbs, plant seedlings 5. Along the perimetre of each section 2 snow-retaining borders 6 are erected from a thermally oxidated soil.
EFFECT: method makes it possible to reduce volumes and timing of reclamation works.
2 cl, 1 dwg
SUBSTANCE: method for developing an antifiltration coating includes preparation of an earth bed, installation of a watertight geomembrane in the form of cloths from polymer materials, installation of a protective liner from geotextile and arrangement of a protective layer. The protective geotextile liner is laid onto the antifiltration element from a geomembrane. A geogrid is fixed to the protective liner by spot welding with perforated walls of cells. Cells are filled with a filler and a gunning cement mix.
EFFECT: higher reliability and durability of a structure, watertightness of an antifiltration coating and hydraulic efficiency of a channel, provides for protection of an antifiltration element against mechanical damages in process of coating operation, eliminates water losses for filtration from canals and water reservoirs, prevention of waterlogging, salinisation and underflooding of valuable arable areas.
SUBSTANCE: ground dam comprises a central part arranged from the dam foundation to its crest from a fine-grained soil, upstream and downstream side fills and an anti-filtration membrane. The membrane is located in the central part of the dam and is made as vertical along the entire height of the central part from split bored piles deepened into the foundation at the specified depth. At the downstream side an ice and soil frozen curtain adjoins the anti-filtration membrane, which is arranged by means of freezing columns and is attached to the membrane by freezing. The material of bored piles in its composition contains hollow microbeads from chemical compounds containing silicon. Quantity of hollow microbeads provides for reduction of a heat conductivity ratio of the bored pile material to the specified value. In the foundation of the upstream fill there is a heat-shielding layer adjoining the anti-filtration membrane.
EFFECT: invention prevents penetration of a heating effect of a water reservoir via an anti-filtration membrane and via a unit of its coupling with the foundation.
13 cl, 2 dwg
SUBSTANCE: method includes orientation of a flexible concrete mat (FCM) in respect to a bottom surface by its one or another side depending on type of soil. The method to install the FCM according to the first version includes orientation of FCM to the bottom surface with the side having higher penetration power as water flow in a water course exceeds the value of non-washing speed for this section of the water course and/or if characteristics of bottom surface soil are sufficient for FCM self-submersion into soil under gravity. Otherwise the FCM is oriented to the bottom surface with the side having the lower penetration power. The method of FCM installation according to the second version in case, if the bottom surface is formed mainly by rock, half-rock or clayey soils includes FCM orientation to the bottom surface with a side, on which blocks have bases of flat shape and larger area in plan compared to the opposite side. If the bottom surface is formed mainly by sandy or macrofragmental soils, then orientation of FCM to the bottom surface is carried out with a side, on which blocks have bases of smaller area in plan or are made without bases. If the bottom surface of the water course mainly contains sludges, sapropels, peated soils or peats, then the FCM is oriented to the bottom surface with its any side. The flexible concrete mat comprises concrete blocks, connected to each other row by row and in rows with at least one connection element. Surfaces in these blocks at the upper and lower side of the FCM are made mainly narrowing in direction from the central part of the blocks. The bases of the blocks have flat shape at one or both sides of the FCM. Ratios of average values of the base area, height of blocks and angles of inclination of the side surface of blocks must correspond to the laws given in the patent claim. The coefficient of asymmetry between FCM sides exceeds or its equal to 1.05.
EFFECT: higher reliability of FCM adhesion to protected bottom surfaces of any type.
17 cl, 5 dwg, 3 tbl, 3 ex