Method of protection of earthworks from the sandy soil
The invention relates to the construction and can be used for the protection of earthworks from the sandy soil from wind erosion. Method of protection of earthworks from the sandy soil includes strengthening the upper part of slopes by stacking them geotextile panels by fastening the edges of the canvases on the slopes. What's new is that before laying geotextile paintings on each slope cut into the ledge concave profile and on the surface of the ledge is applied liquid binder, the lower edge of the layers of geotextile is placed on the ledge with the formation of the tray is applied to the surface of the tray liquid binder and poured the sandy ground by his removal from the outer edge of the ledge. The technical result of the invention is to improve the reliability of mounting of geotextile paintings to the ground and durability of the protective coating. 3 Il.
The invention relates to the construction and can be used for the protection of earthworks from the sandy soil from wind erosion.
There is a method of protection of earthworks from the sandy soil.with. NO. 545721, E 02 D 3/12, E 02 D 17/20, 1977).
This known method is not effective enough due to low tradingeye continuity of the protective film due to the occurrence of thermal cracks with significant daily and seasonal fluctuations in temperature leads to a rapid deterioration of her in the future under the influence of wind and reduced durability.
The closest in technical essence and the achieved result is a method of protection of earthworks from the sandy soil, including strengthening the upper part of slopes by stacking them geotextile panels by fastening the edges of the canvases on the slopes (standards of design and construction of the subgrade of roads in sandy deserts. VSN 77-89. The Ministry of transport construction of the USSR. M: Soundarya, 1991, S. 27, 43 - prototype).
The disadvantage of this method is the lack of reliability of fastening the edges of the layers of geotextile on the slopes of the staples of the reinforcing steel. When exposed on the slope of the wind flow region geotextile paintings on the areas between the mounting brackets are lifted, falling under the cloth wind flow pull staples out of the ground. Mounting canvases clips of reinforcing steel are characterized by low resistance against pulling out, especially in dry sandy soils. When strong winds common to arid and desert areas, this leads to the ejection of staples, the discontinuity of the protective coating and the blowing sand soil with slopes.
The task of the invention is to improve the reliability of fastening of geotextile paintings to the ground earthworks from the sandy soil, including strengthening the upper part of slopes by stacking them geotextile panels by fastening the edges of the canvases on the slopes, according to the invention before installation of geotextile paintings on each slope cut into the ledge concave profile and on the surface of the ledge is applied liquid binder, the lower edge of the layers of geotextile is placed on the ledge with the formation of the tray is applied to the surface of the tray liquid binder and poured the sandy ground by his removal from the outer edge of the ledge.
In the present method of improving reliability of fastening of cloths to the ground slopes and durability of the protective coating is achieved by impregnation binder sandy soil as the top and bottom edges of the canvases placed on the escarpment slopes. The edges of the canvases are trapped in a certain volume of processed astringent sandy soil in soil anchor. This ensures continuous along the length of the earthen constructions reliable contact of the edges of the canvases with the ground slope, unlike the prototype, where the edges of the canvases are mounted by brackets at regular intervals. Continuous along the length of the earthen structures anchoring the edges of the canvases prevents the ingress of wind flow under the geotextile protective Lituanie the edges of the canvases and the formation of a soil anchor increases its strength and wind resistance.
Thus, the proposed differences reported by the claimed method a new technical effect is providing continuous along the length of the ground construction and durable anchoring the edges of the canvases on the slopes, which increases the reliability of fastening of cloths to the ground slope and the durability of the protective coating.
In Fig.1 presents a diagram of one embodiment of the protection of the slopes of the earthen structures of the embankment of the road, built of sand dunes, in Fig.2 - detail of protection after laying layers of geotextile on the slope of Fig.3 - detail of protection at the time of application of the binder on the edges of the canvases in the tray on the ledge.
The method is as follows.
Before laying geotextile paintings on each slope cut into the ledge concave profile and on the surface of the ledge is applied liquid binder, the edge of the layers of geotextile is placed on the ledge with the formation of the tray is applied to the surface of the tray liquid binder and poured the sandy ground by his removal from the outer edge of the ledge.
After the construction of embankments 1 and the protective layer 2 of clay soil on top of the mound, dosplayas.com on each slope cut ledge 3 with reverse slope bias. Of an autoroad oiler moving on bituma emulsion, oil and so on). After impregnation binder soil layer 4, geotextile 5 from non-woven synthetic material placed on the surface of a slope streaks and connected the separate pieces by gluing or stitching. The top edge of the paintings of 6 taken out on the side of the road, covered clay soil and the soil was condensed trailer roller. The bottom edge of the 7 paintings were placed on the ledge with the formation of the tray and pressed to the treated liquid binder to the surface of the sand, hand roller. Then on the edge of the paintings in the tray was applied liquid binder 8 of an autoroad oiler and immediately fell asleep tray sandy soil, moving it to the outer edge 9 of the ledge, while sandy soil is impregnated with a liquid binder, resulting in the over the edge paintings on the ledge formed layer 10 fortified astringent sandy soil. Thus, arranged according to the proposed method the protective coating has a high wind resistance, durability and reliability of fastening of cloths to the ground slopes continuously along the length of the earthen structures of the monolithic edges of the cloths treated with astringent soil, which increases its durability.
The way to protect the slope of the geotextile panels by fastening the edges of the canvases on the slopes, characterized in that before laying geotextile paintings on each slope cut into the ledge concave profile and on the surface of the ledge is applied liquid binder, the lower edge of the layers of geotextile is placed on the ledge with the formation of the tray is applied to the surface of the tray liquid binder and poured the sandy ground by his removal from the outer edge of the ledge.
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: building, particularly for slope consolidation and for stabilizing deep front landslide areas.
SUBSTANCE: structure includes foundation mat and piles formed in wells grouped in rows. Upper pile parts are embedded in foundation mat, lower one is restrained by not-sliding ground layers. Piles are composite along their lengths. Central pile parts are not filled with concrete. Heights of upper and lower pile parts decrease towards landslide head. Structure to prevent deep front land-slides comprises separate local pile groups connected by foundation mats and located within landslide body boundaries. Each foundation mat has tension bars anchored in stable slope layers and arranged under and above foundation mat along slope to retain thereof against displacement and rotation.
EFFECT: improved slope stability, increased operational reliability of structure built on wide landslides, reduced building time and material consumption.
FIELD: building, particularly bridge building.
SUBSTANCE: method involves compacting ground of embankment body and cones; forming drainage layers and water-draining chutes on coating; creating pad with variable rigidity decreasing in direction from bridge along embankment for length equal to approach slab length; arranging approach slab having upward gradient in bridge direction. Pad of embankment body is formed by creating cast-in-place piles along with surface compaction of upper cast-in-place pile parts and upper embankment layer, wherein transversal cast-in-place piles form strips having medium rigidity jointly with ground forming embankments. The medium rigidity is reduced from maximal value at bridge pier to minimal one at approach slab end opposite to bridge pier.
EFFECT: reduced embankment subsidence under approach slab due to decreased pad and draining material displacement in horizontal direction.
8 cl, 6 dwg
FIELD: manufacture of plant covers used for beautification of streets, squares, construction of sportive grounds, as well as for landscape designing.
SUBSTANCE: method involves spraying organic adhesive onto fine-mesh basalt net by means of specially designed equipment for filling meshes to thereby create strong carrier base. Net is perfectly ecologically safe and allows seeds to be uniformly sown over the entire area of lawn. Adhesive used for providing lawn is functioning as nutritive compound for seeds and is used simultaneously for protecting seeds from external influence of moisture and air during prolonged periods. After drying in first drying chamber, mixture of lawn grass seeds is sown onto carrier base through dosing hopper, followed by applying onto given mixture of organic adhesive and drying in second drying chamber. After discharge from drying chamber, ready dry lawn is cut into parts of various lengths, wound into roll and hermetically packed in polyethylene film for further storage and transportation. Lawn is placed on site by unwinding roll onto preliminarily prepared ground and spilling nutrient mixture thereon, followed by heavy irrigation to provide for sprouts emergence. Nutrient mixture and lawn grass seed mixture compositions are worked out depending on climatic zone and composition of parent ground on which lawn is to be provided.
EFFECT: increased efficiency by providing uniform sowing of seeds over the entire lawn area, and damage-free transportation and handling of grown lawn.
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: building, particularly to erect ground structures, namely to consolidate slopes, to reinforce banks of motor roads and railroads, dams, irrigation channels and river banks.
SUBSTANCE: method for slope reinforcing with members arranged in slope body involves preparing ground surface by terracing disturbed layers thereof in accordance with geological structure thereof along with substituting ground in unstable areas for draining material; compacting the draining material and reinforcing thereof with grids of polymeric material having openings of not more than 1 m; arranging zinc-coated steel mesh formed by two-for-one twisting method and having hexahedral openings; connecting the steel mesh with above grids; dividing prepared slope surface into sections with pitch not exceeding 3 m by installing the partitions of zinc-coated steel mesh formed by two-for-one twisting method having height of not more than 0.3 m; scattering loamy ground to form loamy layer having 0.1 m thickness; compacting the loamy ground; scattering vegetable soil; laying bio-textile on vegetable soil and planting greenery.
EFFECT: increased flexibility of protective coating and improved environment protection.
FIELD: agriculture, particularly steep slope terracing to adapt the slope for fruit trees and other crops growth.
SUBSTANCE: method for terracing slopes having steepness equal to or exceeding natural soil slip angle involves forming step-shaped ledges having depressions; scattering soil excavated from the slope over the ledges; stabilizing the soil with reusable rectangular netted retaining walls. The retaining wall has frame-like wall base created of welded angular or channel bars or bars of another cross-section. The wall bases are installed on the slope along lower ledge bounds and inclined at 60° angle with respect to horizon line. The wall bases are fixed by support and bearing wedges for a time equal to soil conglomeration time, wherein liquid or granular fertilizer is preliminarily introduced in soil and soil is laid down with perennial grass before ledge hardening.
EFFECT: increased slope use factor.
FIELD: building, particularly to stabilize slope landslides.
SUBSTANCE: landslide control structure comprises vertical walls built in base formed under the landslide and located along the landslide so that distance between adjacent walls decreases towards lower landslide end. Vertical walls are made of pile rows defining pleat-like system having pitch preventing ground punching between the piles. The pleats are directed so that corner apexes thereof face sliding ground and grillages of adjacent pleat flanges are connected by transversal beams.
EFFECT: increased load-bearing capacity and increased technological efficiency of structure erection.
FIELD: building, particularly to reinforce landslide slopes, particularly extensive landslides.
SUBSTANCE: landslide control structure comprises bored piles fixed in stable slope ground layers and retained by anchoring means. To provide stability of lower landslide part inclined bars of anchor means are connected to bored pile heads. The anchor means are drilled down the slope and have fan-like structure. The anchor means are located at different levels in landslide body.
EFFECT: reduced labor inputs and material consumption for landslide control structure erection and increased stability of landslide massif.
2 cl, 2 dwg
FIELD: mining, particularly to consolidate or to protect pit sides against landslide during pit operation.
SUBSTANCE: method involves laying transversal members connected to ropes along slope, wherein the ropes are fixedly secured to anchors located in upper bench berm; drilling inclined wells extending to bench slope; installing next anchor along lower edge of upper berm and drilling next inclined well cluster. Suspending net to bench slope and pulling down ropes from upper berm through drilled inclined wells so that the first rope ends extend from bench slope; lowering the rope ends to lower berm and securing thereof to transversal members arranged above the net, wherein the transversal members are installed beginning from lower berm; tightening the ropes and fastening the second rope ends to anchors.
EFFECT: increased operational safety and decreased labor inputs for bench slope consolidation.
1 ex, 2 dwg