Method and system for underwater pipeline tunnel assembling

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 hydraulic engineering construction, and in particular to methods of laying underwater pipelines.

Known methods of laying underwater pipelines for transportation of gas, liquid, solid products and other underwater trenches, underwater supports different types (SU 1719550 A1, 21.12.89).

However, the known methods and devices for laying underwater pipelines have disadvantages, for example, with a complex profile of the bottom of the reservoir and maintain them at depths greater than 200 m does not involve the use of lifting (push) forces water immersed in her object, and spend resources on the removal of this force, there is no regulation of the volume of ballast progresses inside a pipeline of cargo, vehicles and other

The closest to the essence and the achieved technical result is the method of installation of underwater tsubamoto, including transportation sections of tsubamoto water to the place of installation, flooding them on underwater support by means of flexible connections, sealing sections tsubamoto (see, for example, patent FR 2424365 And 28.12.1979, F 16 L 1/04).

The objective of the invention is the increased efficiency in laying a thick-walled piping required (estimated) diameter, and in their operation with multipurpose use, for example for movement inside the tube t is unsporty means and simultaneous transportation of gaznefteprodukt and other

The task in the first independent clause is due to the fact that the method of installation of underwater tsubamoto, including transportation sections of tsubamoto water to the place of installation, flooding them on underwater support by means of flexible connections, sealing sections tsubamoto, according to the invention prior to transportation to the place of installation sections tsubamoto equipped with temporary end waterproof bulkheads, give close to zero buoyancy, prittlewell section tsubamoto underwater support by means of flexible connections with weights, and flexible connections sensors pressure water, and then, using the underwater vessel equipped with pusher, using floating cranes push pritoplennye section at the connection node of the previous pritoplennye section, produce external sealing the stacked sections, delete the temporary end watertight bulkheads in a docking station, carry out internal sealing the stacked sections tsubamoto with subsequent serial sections of tsubamoto internal communications, and after mounting of tsubamoto produce its connection with entry and exit tunnels, at all stages of installation of underwater tsubamoto and its subsequent operation use the form buoyant force on a submerged object.

However, depending on the length, depth, Gulf, undercurrents, bandwidth, traffic, transportation of gas, petroleum, fresh water trubomet cross-section can perform cylindrical, parabolic, or in tubular form, for example with multiple thick-walled shells, between which the perimeter mount additional longitudinal sealed partitions that are both pipelines and ribs or increasing the ballast tank.

The task in part of the second independent clause is due to the fact that the system for mounting underwater tsubamoto, including underwater trubomet mounted on underwater and supports made of prefabricated sections of the project length, with sections tsubamoto divided by a horizontal partition into two cavities, the upper of which has a transport path, and in the lower cavity section separated sealed longitudinal partitions for installation of internal pipelines, according to the invention for operation in a submerged position, the system is equipped with pumping and compressor stations, installed on each side and connected by pipelines with the ballast cavity tsubamoto, in addition, the system is equipped with entry and exit t is nilami, hermetically United with underwater sections tsubamoto made of two thick-walled shells from plate steel or titanium alloys, between which is mounted on the perimeter of the longitudinal partitions that are both pipelines and ribs, while section tsubamoto laid on underwater permanent and temporary supports, and temporary supports are located in the intervals between fixed supports, equipped with a hydraulic stabilizing posts to ensure project location tsubamoto, and the upper part of permanent and temporary supports equipped base is semi-circular or parabolic shape and a size larger than the size of the section of tsubamoto, while section tsubamoto provided with a counterweight with a profile corresponding to the profile section tsubamoto, in addition, each section of tsubamoto provided with temporary end bulkhead removed after coupling sections underwater installation vessel, equipped with a fore grip, the respective end loop sections, floating cranes, ships with a set of equipment and mounting accessories to provide underwater engineering works and docking station, equipped with o-ring and retainer coaxially position the stacked sections, the size of the docking station more external R is Smara section tsubamoto, in the upper cavity section tsubamoto laid cables power and lighting networks, communications, signaling, control, and the upper chamber is equipped with pressure sensors, pashamailaram, fire alarm, fire extinguishing system, while section tsubamoto comes with a set of prefabricated elements, providing change and the regulation of the volume of ballast operation within tsubamoto transport path, for example, magnetic levitation, monorail, train tracks, highways, and to provide transportation of gas, petroleum, fresh water.

However, depending on the length, depth, Gulf, undercurrents, bandwidth, traffic, transportation of gas, petroleum, fresh water trubomet cross-sectional perform cylindrical, parabolic, or in tubular form, for example with multiple thick-walled shells, between which is mounted on the perimeter of additional longitudinal sealed partitions that are both pipelines and ribs or increasing the ballast tank, and as ballast can be used is water.

The invention is illustrated graphically where:

- figure 1 shows an underwater trubomet through the water obstacle (sea, Bay and others);

- h is 2 - cut to the train track and support;

- figure 3 - section with a monorail and road;

- 4 - section with two thick-walled tubular structures and the path of the magnetic levitation;

- figure 5 is a section with increased ballast cavity;

- figure 6 - connecting node.

The proposed method is as follows. Delivered to the installation section protoplay cargo on permanent or temporary props at great depths at the pontoons, underwater ship and floating cranes produce the coupling section with the previously installed section, sealing, connecting transportation routes, communications, controls, alarms, fire fighting and other Process dock sections continues until a connection with the exit tunnel when mounting tsubamoto with two sides (banks) ends when the coupling of the last section. The computer center receives information from sensors (control means), which ensures operation of the system in modes simultaneous transportation of goods, traffic and gaznefteprodukt.

The method is implemented with the installation of underwater tsubamoto as follows. Depending on the length of tsubamoto, the depth of the Strait (Gulf), the direction of currents, the geological structure of the bottom of the reservoir, etc. determine the place of installation of the anchors, the construction of the village is Hannah supports up to depth from the surface of the water, approximately 30-50 meters, to ensure the passage of surface vessels, reduce wave action and water currents, as well as the possibility of the external examination, repair by divers, etc. According to the project build on each Bank of the pump and compressor stations 1, 2, entry 3 and out 3 tunnels. Before transporting to the installation sections 5 tsubamoto 4 give close to zero buoyancy. For additional stability design tsubamoto section 5 are mounted on the supports at an angle Δ° in the vertical plane. Each section 5 project length, made of steel plate (shell) 6 or alloys of titanium, coated with a protective outer casing 7 has a temporary end watertight bulkheads 18, with one end - docking station 19, which is equipped with a sealing ring 20 and the retainer 21 coaxially position the stacked sections 5. Inside trubomet 4 divided by horizontal sealed by a partition 8 into two cavities, the upper transport chamber 9, the bottom of the ballast 10. In the upper cavity 9 tsubamoto 4 have a transport path, for example, on a magnetic cushion 11, monorail path 12, a railway track 13, highway 14, a railway track with increased ballast cavity 15. In addition, Verena cavity 9 padded internal communications 16, nab the emer electrical cables, communication, alarm. Transport section 5 tsubamoto 4 water to the place of installation. Flooding their underwater 26 permanent or temporary support 27 by means of flexible connections 23) 25, one end of which is fixed ground anchor 24, and seal section 5 tsubamoto 4. Under flexible connections 23 sensors pressure water 34, and then, using the underwater vessel 28, equipped with a plunger 29, using floating cranes 35 push pritoplennye section 5 in the hub 19 of the previous pritoplennye section 5. Produce external sealing the stacked sections, for example, by welding 30. Delete the temporary end watertight bulkheads 18 in a docking station 19 and produce internal sealing, for example, by welding 30 stacked sections 5 tsubamoto 4 with subsequent serial connection in sections 5 tsubamoto 4 internal communications 16, firefighting 36, ventilation 37.

After completion of the Assembly of sections 5 tsubamoto 4 produces its connection with entry and exit tunnels 3, at all stages of installation of underwater tsubamoto 4 and its subsequent operation using a buoyant force on the submerged object.

To stiffen the substrate transport path(11, 12, 13, 14, 15), ensure transportation of gaznefteprodukt along tsubamoto 4 in h is sung cavity 10 is mounted a vertical support wall 17, which divide the cavity 10 in the pipeline. Trubomet 4, for example, for transportation of large amounts of fresh water can be assembled from sections 5 with two thick-walled shells 6, between which is mounted on the perimeter of the longitudinal partition 22, which is an additional pipelines.

In the intervals between permanent supports 26 can be installed temporary supports 27 with hydraulic stabilization support legs 31 to ensure project location tsubamoto 4. Underwater bearings 26, 27 in the upper part is equipped with a base 32 semi-circular, parabolic or other shape with a diameter or cross-section slightly larger than the diameter of the cross section of tsubamoto 4 sites for placement of the counterweight 33. Temporary supports 27, after coupling sections 5 and lifting weights 33 in a submerged position move to a new place of installation. The method of Assembly of the sections 5 is repeated until the completion of tsubamoto 4 and is connected with tunnels 3.

The flowmeter sensors (not shown) installed in pipelines bottom ballast cavity 10 and the partitions 22. All information from the sensors (controls) enters the computer center (not shown), which ensures operation of the system in modes simultaneous passage of freight trains, vehicles, pumping gaznefteprodukt, fresh water, led the ranks of changes in the volume of ballast (water).

Calculations show that if the diameter of tsubamoto 8 m, the wall thickness of 5 cm, with ballast lifting (push) force water to 1 peg. the meter will be approximately 14 tons, the load from a moving vehicle is distributed over the entire inner surface of the sections, because the object (trubomet) is under constant external pressure of the medium (water).

The technical capabilities of industry can produce a heavy steel sections 5 tsubamoto 4 estimated diameter and required cross-section, while the intensity of tsubamoto 4 will be less consumption of metal than in the construction of the tunnel of the same diameter, plus 30-40% reduced path length.

1. The method of installation of underwater tsubamoto, including transportation sections of tsubamoto water to the place of installation, flooding them on underwater support by means of flexible connections, sealing sections tsubamoto, characterized in that prior to transportation to the place of installation sections tsubamoto equipped with temporary end waterproof bulkheads, give close to zero buoyancy, prittlewell section tsubamoto underwater support by means of flexible connections with weights, and flexible connections sensors pressure water, and then, using the underwater vessel equipped with pusher, using floating cranes Jadwiga the t pritoplennye section at the connection node of the previous pritoplennye section produce external sealing the stacked sections, delete the temporary end watertight bulkheads in a docking station, carry out internal sealing the stacked sections tsubamoto with subsequent serial sections of tsubamoto internal communications, and after mounting of tsubamoto produce its connection with entry and exit tunnels, at all stages of installation of underwater tsubamoto and its subsequent operation using a buoyant force on the submerged object.

2. The method of installation of underwater tsubamoto according to claim 1, characterized in that depending on the length, depth, Gulf, undercurrents, bandwidth, traffic, transportation of gas, petroleum, fresh water trubomet cross-sectional perform cylindrical, parabolic, or in tubular form, for example, with a few thick-walled shells, between which the perimeter mount additional longitudinal sealed partitions that are both pipelines and ribs or increasing the ballast tank.

3. System for mounting underwater tsubamoto, including underwater trubomet mounted on underwater and supports made of prefabricated sections of the project length, and pipe sections the bridge divided by a horizontal partition into two cavities, at the top of which has a transport path, and in the lower cavity section separated sealed longitudinal partitions for installation of internal pipelines, wherein for operation in a submerged position, the system is equipped with pumping and compressor stations, installed on each side and connected by pipelines with the ballast cavity tsubamoto, in addition, the system is equipped with entrance and exit tunnels, hermetically United with underwater sections tsubamoto made of two thick-walled shells from plate steel or titanium alloys, between which is mounted on the perimeter of the longitudinal partitions that are both pipelines and ribs, while section tsubamoto laid on underwater permanent and temporary supports, and temporary supports are located in the intervals between fixed supports, equipped with a hydraulic stabilizing posts to ensure project location tsubamoto, and the upper part of permanent and temporary supports equipped base is semi-circular or parabolic shape and a size larger than the size of the section of tsubamoto, while section tsubamoto provided with a counterweight with a profile corresponding to the profile section of tsubamoto, in addition, each section of tsubamoto equipped with a lie is authorized end bulkhead, removed after coupling sections underwater installation vessel, equipped with a fore grip, the respective end loop sections, floating cranes, ships with a set of equipment and mounting accessories to provide underwater engineering works and docking station, equipped with o-ring and retainer coaxially position the stacked sections, the size of the docking station bigger than the exterior size of the section of tsubamoto, in the upper cavity section tsubamoto laid cables power and lighting networks, communications, signaling, control, and the upper chamber is equipped with pressure sensors, pashamailaram, fire alarm, fire extinguishing system, while section tsubamoto comes with a set of prefabricated elements, providing change and the regulation of the volume of ballast operation within tsubamoto transport path, for example, magnetic levitation, monorail, train tracks, highways, and to provide transportation of gas, petroleum, fresh water.

4. The system according to claim 3, characterized in that depending on the length, depth, Gulf, undercurrents, bandwidth, traffic, transportation of gas, petroleum, fresh water trubomet cross-sectional perform cylindrical, parab the symbolic or tubular form, for example, with a few thick-walled shells, between which is mounted on the perimeter of additional longitudinal sealed partitions that are both pipelines and ribs or increasing the ballast tank.

5. System according to any one of p and 4, characterized in that the ballast water is used.



 

Same patents:

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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