Tunnel

FIELD: building, particularly underground structures erected in difficult mining and geological conditions, namely in soft watered ground bedded under tunnel scoop and forming tunnel base.

SUBSTANCE: tunnel has composite lining including hollow metal members driven in ground and forming screen, load-bearing frames and grouting concrete. Metal members are connected one to another through interlocks. At least some of metal members have rigidity varying along length thereof and increasing in direction opposite to metal member driving direction. Metal members have constant outer diameters.

EFFECT: increased tunnel reliability and operational safety due to prevention of original ground deformation during tunnel building and operation; reduced ground settlement at base of tunnel built under motor road without traffic interruption, reduced building time, power and labor inputs, material consumption due to optimal material distribution along driven member in accordance with load distribution among member parts.

24 cl, 11 dwg

 

The invention relates to the field of construction, namely, the construction of underground structures, erected in difficult mining and geological conditions, including weak watered soil that lies beneath the tray tunnel and forming its base.

Closest to the invention in its essence and the achieved technical result is a tunnel, constructed in soft soils, with precast-monolithic lining, comprising forming a perforated screen in the ground hollow metal elements, combined locks, load bearing frame and the concrete poured (see, for example, RU 2138507, 27.09.1999).

However, the known design of the tunnel does not take into account different degrees of loading of each element, the resulting stresses in length and when the construction is rather time-consuming and material-intensive.

The present invention is to improve the reliability and safety of long-term operation of the tunnel, built in difficult mining and geological conditions, while reducing the consumption of materials and the complexity of the construction.

The problem is solved due to the fact that in the tunnel, constructed in soft soils, with precast-monolithic lining, comprising forming a perforated screen in the ground hollow metal elements, combined locks, mainframes and b is the tone monolithic, according to the invention, at least part of the perforated hollow in the ground metal screen elements are made along the length of the variable stiffness, increasing in the direction opposite to the direction of thrust, and a constant outer diameter.

Hollow metal screen elements can be performed with a closed or open cross-sectional configuration, including metal pipes, mainly kropiewnicki, including rolling, and/or welded and/or cold and/or solder along the seam, and/or seamless, and/or spirally.

Cavity of screen elements can be filled with a hardening material, which can be used in concrete or polymer concrete. Filling the cavities of the screen elements can be made with reinforcement.

The reinforcement cavities of the screen elements can be carried by the frames, and/or rods and/or nets, and/or with the inclusion of rolled sections and/or with the use of beam structures is a type of flat or spatial farms.

At least part of the surfaces of the screen elements can be made with a protective coating.

Hollow metal elements screen, supporting frames and concrete concreting can together form a single composite spatial system.

The supporting frame may be made single-span or multi-span, with posts and beams made in the form of closed or open and/or combined profiles of rolled and/or bent and/or welded and/or tubular elements.

Locking connection can be made in the form of lock forming, welded to facing each other, the adjacent surfaces of the metal elements of the screen are two extended locking elements, one of which is made of C-shaped in cross-section, and the other is made in the form of a wound in his wall with located on the free edge of the broadening width greater than the width of the cross-section of a C-shaped cross section with a locking element.

Locking connection can be made in the form of lock forming, welded to facing each other, the surfaces of adjacent elements of the screen are two extended locking elements, which one of the adjacent elements of the screen is made of C-shaped in cross section and the other in the form of exciting in a C-shaped locking elements of the walls located on the free edge of each wall by widening a width greater than the width of cross-sections C-shaped in cross-section of the locking elements.

Each section of high rigidity can be performed with external radial ribs, including reinforcement plates.

Each section of high rigidity can be done is to from a material with modulus of elasticity, greater than the moduli of elasticity of the material of the other sections.

Each section of high rigidity can be made shorter than the other sections.

The tunnel can be made with pile Foundation pile which is made of injection.

Pressed in the ground hollow metallic screen elements can be located around the perimeter of the tunnel with the formation of a protective screen, part of the flume which together with the elements of the supporting frame, the pile Foundation pile Foundation and reinforced concrete monolithic and/or prefabricated elements of the tray forms part of the flume lining.

The tunnel can be performed with portals, with a retaining wall of variable height and protective screen located in the grounds of the portals and at least part of the height and length adjacent to the base of the retaining wall, and a protective shield made of a depression in the ground, hollow metal elements, the cavity of which is filled by reinforced concrete.

The base of the portals can be performed pile with transition plates.

Pile Foundation portals can be made of injection cementogenesis.

The lining may include ceiling, wall and tray, and the thickness of slabs, walls and tray tunnel are related as 1:(0,7...1,2):(0,5...0,9), the diameter of the piles is 600...1000 mm at a length of 10...16 m, while the diameter of the elements is s screen - 800 to 1400 mm

With one inner side of the tunnel can be established utility track, and on the other side of the sidewalk.

Road clothing tunnel can be made of consecutive bottom-up layers of claydite-concrete, porous asphalt and a layer of dense asphalt concrete with a surface treatment.

Road clothing official track can be made of consecutive bottom-up layers of gravel with a layer of polystyrene foam, the layer of cement-sand mixture and tile flooring.

Road wear of the pavement can be made of consecutive bottom-up layers of gravel with a layer of polystyrene foam, mortar screed, cement-sand mixture and tile flooring.

Technical result provided by the invention is to improve reliability and safety of operation by eliminating the sediment surface as during the construction and operation while reducing sediment soil base tunnel constructed under the highway without interruption of traffic in difficult mining and geological conditions, including in the presence of weak flooded soils at the base of the tunnel, while reducing construction time, energy, labor and materialsfrom by optimalnooperating material along the length of the breakable element, the appropriate degree of loading areas.

The invention is illustrated by drawings, where

1 shows a longitudinal section of the future tunnel under punching shear hollow elements of the screen behind the walls of the future tunnel;

figure 2 - the hollow element of the screen in the form of a composite metal pipes, longitudinal section;

figure 3 is a hollow screen element in cross section;

figure 4 - lock connection hollow metallic screen elements in cross section;

figure 5 is a fragment of the cross-section of part of the tunnel at an intermediate stage of construction with protective screen frames and temporary fastening;

figure 6 is a fragment of the portal of the tunnel, longitudinal section, piles conventionally not shown;

figure 7 - the portal of the tunnel with retaining walls, front view;

on Fig is a cross section of the tunnel with a protective screen and pile base;

figure 9 - road clothing tunnel cross section;

figure 10 - road clothing official track tunnel cross section;

figure 11 - road clothing sidewalk tunnel cross section.

Tunnel 1, constructed in soft ground, has precast-monolithic lining 2, comprising forming the screen 3 is pressed in the ground hollow metal elements 4, United interlocks 5, the supporting frame 6 and the concrete poured 7. On kr is ina least part pressed into the soil hollow metal elements 4 screen 3 is made along the length of the variable stiffness, increasing in the direction opposite to the direction of thrust, and a constant outer diameter.

Hollow metal elements 4 screen 3 is made with a closed or open cross-sectional configuration, including metal pipes, mainly kropiewnicki, including rolling, and/or welded and/or cold and/or solder along the seam, and/or seamless, and/or spirally.

Cavity 8 elements 4 screen 3 filled with hardening material, which can be used in concrete or polymer concrete. Filling cavities 8 elements 4 screen 3 can be made with reinforcement.

The reinforcement cavities 8 elements 4 screen 3 is made frames 9, and/or rods (not shown), and/or mesh (not shown), and/or with the inclusion of rolled profiles (not shown), and/or with the use of beam structures is a type of flat or trusses (not shown).

At least part of the surface elements 4 screen 3 is made with a protective coating (not shown).

Hollow metal elements 3, the supporting frame 6 and the concrete poured 7, together form a single composite spatial system.

The supporting frame 6 made depraetere or multi-rack beams 10 and 11, made in the form of closed or open and/or combined profiles of rolled and/or bent and/or welded and/or tubular elements (not shown).

Lock compound 5 can be made in the form of lock forming, welded to facing each other, the surfaces of adjacent metal elements 4 screen 3, two extended locking elements 12, 13, one of which 12 is C-shaped in cross-section, and the other 13 are made in the form of a wound in his wall with located on the free edge of the broadening width greater than the width of the cross-section of a C-shaped cross section with a locking element.

Lock compound 5 can be made in the form of lock forming, welded to facing each other, the surfaces of adjacent elements 4 screen 3 two extended locking elements 12, 13 which one of the adjacent elements 4 screen 3 is made of C-shaped in cross section and the other in the form of exciting in a C-shaped locking elements 12 walls located on the free edge of each wall by widening a width greater than the width of cross-sections C-shaped in cross-section of the locking elements 12.

Each section of increased stiffness (not shown) can be performed with external radial ribs, including reinforcement plates (not shown).

Each section is I increased stiffness (not shown) may be made from a material with modulus of elasticity, greater than the moduli of elasticity of the material of the other sections or each section of high rigidity can be made shorter than the other sections.

Tunnel 1 can be performed with the pile base 14, piles 15 which is made of injection.

Pressed in the ground hollow metal elements 4 can be located around the perimeter of the tunnel 1 with the formation of the protective screen 3, part of the flume which together with the elements of the supporting frame 6, the pile Foundation pile Foundation and reinforced concrete monolithic and/or prefabricated elements of the tray forms part of the flume lining.

The tunnel 1 is made with portals 16, having a retaining wall 17 of variable height and protective screen 3, located in the grounds of portals 16 and at least part of the height and length adjacent to the base of the retaining wall 17, and a protective shield 3 is made of breakable in the ground hollow metal elements 4, the cavity 8 which is filled with reinforced concrete.

The basis of portals 16 is made of pile with transition plates (not shown).

Piles (not shown) of the Foundation of portals 16 is made of injection, cementogenesis.

The casing 2 includes a ceiling 18, the wall 19 and the tray 20, and the thickness of the slab 18, the walls 19 and tray 20 tunnel 1 may correlate with 1:(0,7...1,2):(0,5...0,9), the diameter of the pile 15 is 600...1000 mm in length is 10...16 m, and the diameter of the elements 4 screen 3 - 800 to 1400 mm

With one inner side of the tunnel 1 is formed of a service track, and on the other side of the sidewalk (not shown).

Road clothing tunnel 1 is made of consecutive bottom-up layers 21 claydite-concrete, porous asphalt layer 22 and dense asphalt concrete 23 with a surface treatment.

Road clothing official track made of consecutive bottom-up layers of gravel 24 with a layer of expanded polystyrene 25, the layer of cement-sand mixture 26 and tiles cover 27.

Road clothing sidewalk made of consecutive bottom-up layers of gravel 24 with a layer of expanded polystyrene 25, mortar screed 28, cement-sand mixture 26 and tiles cover 27.

1. The tunnel, constructed in soft soils, with precast-monolithic lining, comprising forming a perforated screen in the ground hollow metal elements, United interlocks, mainframes and concrete monolithic, characterized in that at least part of the perforated hollow in the ground metal screen elements are made along the length of the variable stiffness, increasing in the direction opposite to the direction of thrust and a constant outer diameter.

2. The tunnel according to claim 1, characterized in that the hollow metal elements of the screen you who Olney with a closed or open cross-sectional configuration, including metal pipes, mainly kropiewnicki, including rolling, and/or welded and/or cold and/or solder along the seam, and/or seamless, and/or spiral.

3. The tunnel according to any one of claims 1, 2, characterized in that the cavity of the elements of the screen filled with hardening material.

4. The tunnel according to claim 3, characterized in that the cavity of the elements of the screen is filled with concrete or polymer concrete.

5. The tunnel on any of p, 4, characterized in that the filling of the cavities of the screen elements are made with reinforcement.

6. The tunnel according to claim 5, characterized in that the reinforcement cavities screen elements made frames, and/or rods and/or nets, and/or with the inclusion of rolled sections and/or with the use of beam structures is a type of flat or spatial farms.

7. The tunnel according to any one of claim 2 to 6, characterized in that at least part of the surfaces of the screen elements are made with a protective coating.

8. The tunnel according to any one of claims 1 to 7, characterized in that the hollow metal elements of the screen carrying frame and the concrete poured to form together a single composite spatial system.

9. The tunnel according to any one of claims 1 to 8, characterized in that the supporting frame is made single-span or multi-span, with posts and beams, made in the form is closed the th, or open and/or combined profiles of rolled and/or bent and/or welded and/or tubular elements.

10. The tunnel according to any one of claim 2 to 9, characterized in that the interlocking connection of the hollow metallic screen elements made in the form of lock forming, welded to facing each other, the surfaces of adjacent metal elements of the screen, two extended locking elements, one of which is made of C-shaped in cross-section, and the other is made in the form of a wound in his wall with located on the free edge of the broadening width greater than the width of the cross-section of a C-shaped cross section with a locking element.

11. The tunnel according to any one of claim 2 to 9, characterized in that the interlocking connection of the hollow metallic screen elements made in the form of lock forming, welded to facing each other, the surfaces of adjacent elements of the screen are two extended locking elements, which one of the adjacent elements of the screen is made of C-shaped in cross section and the other in the form of exciting in a C-shaped locking elements of the walls located on the free edge of each wall by widening a width greater than the width of cross-sections C-shaped in cross-section of the locking elements.

12. The tunnel according to any one of claims 1 to 11, characterized in that each section of increased stiffness within the and with external radial ribs, including reinforcement plates.

13. The tunnel according to any one of claims 1 to 11, characterized in that each section of increased stiffness is made from a material with a modulus of elasticity greater than the modulus of elasticity of the material of the other sections.

14. The tunnel according to any one of claims 1 to 11, characterized in that each section of increased stiffness is made shorter than the other sections.

15. The tunnel according to any one of claims 1 to 14, characterized in that it is made with pile Foundation pile which is made of injection.

16. The tunnel 15, characterized in that the perforated hollow in the ground metal screen elements are located around the perimeter of the tunnel with the formation of a protective screen, part of the flume which together with the elements of the supporting frame, the pile Foundation pile Foundation and reinforced concrete monolithic and/or prefabricated elements of the tray forms part of the flume lining.

17. The tunnel according to any one of claims 1 to 16, characterized in that it is made with portals, with a retaining wall of variable height and protective screen located in the grounds of the portals and at least part of the height and length adjacent to the base of the retaining wall, and a protective shield made of a depression in the ground, hollow metal elements, the cavity of which is filled by reinforced concrete.

18. The tunnel 17, characterized in that the base is their portals made a pile, with transition plates.

19. The tunnel p, characterized in that the pile Foundation of portals made of injection, cementogenesis.

20. The tunnel according to any one of claim 2 to 19, wherein the lining includes a ceiling wall and the tray, and the thickness of slabs, walls and tray tunnel are related as 1: (0,7...1,2): (0,5...0,9), the diameter of the piles is 600...1000 mm at a length of 10...16 m, and the diameter of the elements of the screen is 800 to 1400 mm

21. The tunnel according to any one of claims 1 to 20, characterized in that one of its inner side formed utility track, and on the other side of the sidewalk.

22. The tunnel according to any one of claims 1 to 21, characterized in that road clothing tunnel made of consecutive bottom-up layers of claydite-concrete, porous asphalt and a layer of dense asphalt concrete with a surface treatment.

23. The tunnel on item 21, characterized in that road clothing official track made of consecutive bottom-up layers of gravel with a layer of polystyrene foam, the layer of cement-sand mixture and tile flooring.

24. The tunnel on item 21, characterized in that the road wear of the pavement is made of consecutive bottom-up layers of gravel with a layer of polystyrene foam, mortar screed, cement-sand mixture and tile flooring.



 

Same patents:

FIELD: mining industry.

SUBSTANCE: rotor is made in form of cylindrical body, on working surface of which cutter holders are radially placed, each of which is made in form of shaft, freely placed in cylindrical groove of rotor body. Along whole length of each cutter holder cutting elements are mounted with hard-alloy inserts. Between cutter holders cutting elements are placed, made in form of rectangular prisms with hard-alloy inserts.

EFFECT: higher efficiency.

3 dwg

FIELD: mining industry.

SUBSTANCE: method includes erection of wall, prior reinforcement of rock massif along extraction track by drilling longitudinal and slanting wells and forcing reinforcing cementing solutions into these wells, destruction and cleaning of rocks under protection of cementing cover, erection of permanent support, following reinforcement of contour-adjacent massif by cementation solutions through wells, drilled perpendicularly to mine axis. Draining wells are additionally drilled with delay through cementing layer having length greater than thickness of reinforced rocks zone, to form a draining layer around reinforced cover.

EFFECT: higher effectiveness.

2 cl, 4 dwg

FIELD: mining industry.

SUBSTANCE: device has two asynchronous electric engines, connected via reducers to drive sprockets of continuous traction chain, provided with plane carriages with their possible displacement along the guide, and hydraulic cylinders for displacing guide on pit-face. To windings of stators of first and second electric engines connected respectively are outputs of first and second frequency converters, inputs of which are connected to power grid and control inputs of which are connected respectively to outputs of first and second frequency adjusters. To frequency adjusters also connected are inputs of load detectors, to outputs of which load balancing block is connected, outputs of which are connected to inputs of first frequency adjuster. To inputs of both frequency adjusters output of load adjuster is connected, inputs of which are connected to load-setting block and load sensor for second engine. To output of second frequency converter connected are input of control block, other input of which is connected to signal block of base plant, and stator winding of third asynchronous engine, which via mechanical link is connected to first and second hydraulic pumps, having constant working volumes. Output of first hydraulic pump is connected to force hydro-main and input of second preventing hydraulic valve and to first inputs of two-position hydraulic distributors with electromagnetic control, to electromagnets of which outputs of control block are connected. Second inputs of two-positional hydraulic distributors with electromagnetic control are connected to control chambers of hydro-controlled two-positional hydro-distributors, which are part of hydro-blocks. Outputs of hydro-controlled two-positional distributors are connected to opposite hollows of volumetric dosing device of each hydro-block, and their inputs are connected respectively to outputs of hydro-distributors for controlling hydro-cylinder for moving the guide on pit-face, inputs of each of which are connected to force and drain hydro-mains, and outputs are connected to piston and rod hollows of appropriate hydro-cylinder.

EFFECT: higher efficiency.

1 dwg

FIELD: mining industry.

SUBSTANCE: method includes expanding guiding pipeline by extracting soil from around it by driving shield with rotor working implement. Soil is extracted to value, surpassing needed outer diameter of shield cover. Forming ring-shaped space inside tunnel mine is compacted from back side and continuously filled with liquid. Concurrently sedimentation of extracted soil is drained from lower portion of face. Displacement of driving equipment relatively to guiding pipeline is performed along soft trajectory. Device has means for driving guiding pipeline and driving shield with rotor working implement. Rotor working implement is mounted on body of driving shield. Front surface of working implement with cutters extends beyond outer contour of shield cover, provided with back end compaction. Device is provided with fluid pump device. Force hose of pump is outputted from upward portion beyond outer contour of shield cover. Device for transporting extracted soil from face is made in form of suck-in hose connected to pump device and to lower portion of ring space beyond rotor working implement.

EFFECT: lower transverse loads on guiding pipeline.

2 cl, 1 dwg

FIELD: mining industry.

SUBSTANCE: device has frontal, two side and two conical working tools with rock-destroying tools on outer surfaces, drives, rigidly connected to axes of each working tool, and displacement mechanism, connected to guides, placed at angle relatively to each other, which angle is determined from mathematical expression. Frontal and each of side working tools are made in form of two rotation bodies, having arced forming lines with given value of convexity. Axes of frontal working tool and axes of two conical working tools are rigidly connected to guides, axes of upper rotation body of frontal working tool being displaced relatively to axis of its lower rotation body towards pit-face, and axes of each pair of side working tools are jointly connected to each other and to guides. Frontal working tool may be made in form of several modules.

EFFECT: higher efficiency.

2 cl, 4 dwg

The invention relates to the mining industry and construction, namely for the construction of tunnels of noncircular cross section by shield tunneling method

The invention relates to the mining industry and can be used with sinking underground workings of any cross-section, and assignments in the breeds of any fortress

The invention relates to a shield tunnel construction and can be used mainly for conducting small diameter tunnels

FIELD: building, namely underground structure erection, particularly for building multipurpose pipelines under acting roads without traffic interruption and in difficult mining and geological conditions and in presence of watered tunnel base ground.

SUBSTANCE: method involves forming minitunnel by successive driving hollow reinforced concrete sections in ground and/or embankment along with simultaneous supplying thixotropic mix; connecting above sections one to another and to neighboring pipeline sections during driving thereof. Pipeline sections have opened end parts. One end part has annular grove opened from section end for receiving metal shell extending out of the section end and having thickness of not more than groove depth. Shell and end section part form stepped funnel. The second section end part tapers in stepwise manner to end thereof to form bush part having one step for shell of neighboring section receiving. The second section end part is provided at least with one step for gasket. Gasket is made of pliable sealing gas-and waterproof material and bearing against step surface by one gasket side and against inner shell surface by another side thereof. Steps of bush part are formed within half of thickness of section wall facing outwards, wherein neighboring sections are located so that gaps are formed between ends thereof. Compression ring and additional gasket abutting compression ring are installed in above gap. Additional gasket is made of pliable gas- and waterproof material and bears against inner shell surface by outer ring side and to neighboring section ends by end surface thereof. Length of bush part exceeds that of adjoining part of metal shell. End parts of pipeline sections adjacent to minitunnel mate neighboring end parts of minitunnel or adapter and/or inserted sections are used for pipeline and minitunnel connection. Pipeline is connected to minitunnel after driving the last pipeline section.

EFFECT: reduced material consumption, labor inputs and time required for pipeline laying; increased service life and economy.

8 cl, 16 dwg

FIELD: building, particularly for slope consolidation and for stabilizing deep front landslide areas.

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EFFECT: improved slope stability, increased operational reliability of structure built on wide landslides, reduced building time and material consumption.

2 dwg

FIELD: building, particularly underground or underwater structures.

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EFFECT: improved crack-resistance; increased erection rate due to increasing admissible dimensions of blocks to be concreted.

3 dwg, 1 ex

FIELD: building, particularly erection of all-purpose underground structures having deep foundation pit of irregular shape.

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EFFECT: improved structure stability, reduced labor inputs, material consumption and increased reliability.

4 cl, 2 dwg

FIELD: municipal engineering, particularly covers for manholes of different underground pipelines.

SUBSTANCE: cover comprises base, fixed rests and sliding rest located diametrically opposite to fixed rests and having stop and locking device. Fixed and sliding rests are arranged on cover base from support surface side. Movable rest is made as flat cam member with stop groove and key orifices. Cam member has central key orifice corresponding to key orifice formed in cover base. Locking device is made as rotary plate performing rotation around its axis and having short and long shoulders. Rotary plate includes counterweight and stop member arranged on long shoulder from opposite axis sides. Stop member may cooperate with flat cam member groove. Short shoulder may close central key orifice made in cam member when stop member is arranged in cam member groove.

EFFECT: increased locking reliability.

2 cl, 9 dwg

FIELD: municipal engineering, particularly covers for manholes of different underground pipelines.

SUBSTANCE: cover comprises base, fixed rests and sliding rest located diametrically opposite to fixed rests and having stop and locking device. Fixed and sliding rests are arranged on cover base from support surface side. Movable rest is made as flat cam member with stop groove and key orifices. Cam member has central key orifice corresponding to key orifice formed in cover base. Locking device is made as rotary plate performing rotation around its axis and having short and long shoulders. Rotary plate includes counterweight and stop member arranged on long shoulder from opposite axis sides. Stop member may cooperate with flat cam member groove. Short shoulder may close central key orifice made in cam member when stop member is arranged in cam member groove.

EFFECT: increased locking reliability.

2 cl, 9 dwg

FIELD: hydraulic structures, particularly for laying underwater pipelines.

SUBSTANCE: method involves transporting pipeline tunnel sections by water to pipeline laying site; submerging thereof; placing pipeline tunnel sections on underwater piers with the use of flexible ties; sealing pipeline tunnel sections. Tunnel sections have nearly zero floatability. Pipeline tunnel sections are submerged and put on piers by flexible ties. Then pipeline tunnel sections are pushed in docking unit of previous submerged section with the use of submarine and sealed from inside and outside along with connection of inner service lines. After finishing pipeline tunnel sections assemblage entry and exit tunnels are secured to pipeline tunnel. System for underwater pipeline tunnel sections assembling includes underwater pipeline tunnel mounted on underwater piers and formed of separate sections having design lengths. Pipeline tunnel sections are divided into two chambers by horizontal partition. Transport path is arranged in upper chamber. Lower section is divided into several cavities by air-tight partitions for laying inner pipelines. Underwater pipeline tunnel sections are formed of two thick-walled shells of steel plates or titanium alloy. Longitudinal partitions are mounted between shells and secured along perimeter thereof. Longitudinal partitions serve as pipelines and stiffening ribs. Pipeline tunnel sections are laid on underwater permanent and temporary piers. Upper pier parts have bases of semicircular or parabolic shape. Pier part dimensions exceed that of pipeline tunnel sections.

EFFECT: increased efficiency of pipeline laying and maintenance during multi-purpose usage thereof.

5 cl, 6 dwg

The invention relates to the field of construction and mining and can be used in the construction of sub-seabed tunnel large extent

The invention relates to the construction and can be used to stabilize landslides on the slopes

The invention relates to the construction, namely, devices, designed to reduce landslide pressure on pipelines located on landslide slopes

FIELD: hydraulic structures, particularly for laying underwater pipelines.

SUBSTANCE: method involves transporting pipeline tunnel sections by water to pipeline laying site; submerging thereof; placing pipeline tunnel sections on underwater piers with the use of flexible ties; sealing pipeline tunnel sections. Tunnel sections have nearly zero floatability. Pipeline tunnel sections are submerged and put on piers by flexible ties. Then pipeline tunnel sections are pushed in docking unit of previous submerged section with the use of submarine and sealed from inside and outside along with connection of inner service lines. After finishing pipeline tunnel sections assemblage entry and exit tunnels are secured to pipeline tunnel. System for underwater pipeline tunnel sections assembling includes underwater pipeline tunnel mounted on underwater piers and formed of separate sections having design lengths. Pipeline tunnel sections are divided into two chambers by horizontal partition. Transport path is arranged in upper chamber. Lower section is divided into several cavities by air-tight partitions for laying inner pipelines. Underwater pipeline tunnel sections are formed of two thick-walled shells of steel plates or titanium alloy. Longitudinal partitions are mounted between shells and secured along perimeter thereof. Longitudinal partitions serve as pipelines and stiffening ribs. Pipeline tunnel sections are laid on underwater permanent and temporary piers. Upper pier parts have bases of semicircular or parabolic shape. Pier part dimensions exceed that of pipeline tunnel sections.

EFFECT: increased efficiency of pipeline laying and maintenance during multi-purpose usage thereof.

5 cl, 6 dwg

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