Installation of submersible supporting structures

FIELD: construction.

SUBSTANCE: installation method of a supporting structure at sea or river bottom, in which a supporting structure is installed, which is capable of standing independently for some time, being rather heavy to be retained in position by friction at sea or river bottom, before operations are performed which are required for constant fixture of the supporting structure at sea or river bottom and during their performance. The above structure includes a variety of anchoring points intended for interaction with supporting devices having a possibility of their position control and contacting to the sea or river bottom. Besides, each of the above said devices has a possibility of receiving and setting to the specified position of anchors. The method involves the following stages, at which transportation of the supporting structure and its submersion to the sea or river bottom is performed by means of an installation ship. It involves the stages, at which the supporting structure is installed at the specified level and with the specified orientation relative to the sea or river bottom by means of supporting devices. Anchorage of the supporting structure is performed to the sea or river bottom with anchors by means of devices supported from the supporting structure in order to ensure possible manipulation of anchors and their submersion.

EFFECT: providing reliability of a structure; reducing material consumption and labour intensity.

17 cl, 10 dwg

 

This invention relates to an apparatus mounted on the sea floor (or on the river bottom), support structures, which typically protrude above the surface of the sea (or river).

The possible use of such support structures is the application to provide support for wind turbines or turbine driven by the flow of water, or devices that are driven by the energy of the waves.

In particular, the present invention relates to a method of construction of support structures and the installation of such support structures, regardless of their destination.

Despite the fact that these supporting structures, as a rule, will be projecting above the surface of the sea or river in which/which includes supporting structure, the upper part of the support structure can be optionally removed after the installation is complete, so that in such cases the remainder of the support structure, i.e. the so-called permanent/stationary component, can be completely submerged.

It was found that when performing installation of support structures, for example, for a submersible marine mounted on the seabed, turbine installations, the main difficulty associated with such units, associated with the time required for installation of such facilities, due to the fact that modern methods of installation envisage the mandate the use of large vessels for installation, such as a barge with a cargo boom crane or barge Jack-up devices, which should be located at the site of erection to complete construction of the zero cycle. In practice, such vessels are required to install the structure in a predetermined position, but a long time of installation for such vessels result in very high costs for installation, but also to reduce the number of installations, which this vessel can be completed within the given time.

The present invention is to develop methods of installation and construction of support structures made with the possibility of installing them on the sea or on the river bottom, which usually protrude above the surface of the sea or the river, regardless of their destination, but which, as a rule, are designed to provide supports for wind turbines or turbine driven by the flow of water, or devices that are driven by the energy of the waves.

A particular object of the invention is to develop a means through which such support structures can be installed even under adverse conditions, for example, when there is a possibility of strong currents or waves, with less maintenance required for the vessel to install.

In accordance with the first aspect of the invention, a method of condition is anouki support structure, you want to install on a sea or river bottom, providing for the construction of the supporting structure so that it will be able temporarily to stand on a sea or river bottom before implementation and during the whole execution time of operations required for the permanent fixing of the support structure on the sea or river bottom.

Rationally supporting structure made in the form of an elongated column to provide support for submersible turbine driven by the flow of water and/or wind turbines.

Installation of the support structure preferably includesstage fastening structure on the sea or river bottom by means of piles or other similar anchoring means.

The supporting structure preferably includes many places anchoring designed for interoperability with the supporting devices supporting structure, and each specified reference device is configured to receive and installed in a predetermined position of anchor piles supporting structure or similar tools that hammered/immersed in the sea or river bottom by means resting on the supporting structure to allow manipulation of piles or similar means and the driving of piles or similar means is.

In a rational manner similar elongated column supporting structure made with such design that it can be lowered to the sea or river bottom and its position can be adjusted to correct any flatness of the sea or river bottom by adjusting the position of each individual support member in contact with the bottom, before diving respective piles.

If it is deemed necessary, the method may include the step of adding additional load to the design in that case, if the support structure is moved during its installation under the action of currents, waves or wind, exposed to the risk of insufficient frictional contact with her sea or river bottom during the installation process, to maintain the set period.

In accordance with an additional aspect of the invention is designed supporting structure, which is made with the possibility of installing it on the sea or river bottom, while the structure is made heavy enough so that it temporarily yourself standing on a sea or river bottom due to the fact that it is heavy enough to hold it in a predetermined position by the friction on the seabed, and this design includes many places anchoring designed the La interaction is made with the ability to regulate their position, non contact interaction with the sea or river bottom, supporting devices, each said device is configured to receive and installed in a predetermined position of anchor piles supporting structure which is hammered/immersed in the sea or river bottom by means resting on the supporting structure to allow manipulation of piles and driving of piles.

In the preferred construction, a temporary additional structure may be provided in the upper part of the support structure for installation/placement of equipment/tools for performing all operations required for the driving of piles used for fastening the support structure on the sea or river bottom.

In accordance with an additional aspect of the invention is designed supporting structure made with the possibility of installing it on a sea or river bottom, while supporting structure created as samoustraniajutsia design, as it will temporarily stand on their own during the whole time of the operations necessary for the permanent fixing of the support structure on the sea or river bottom.

In accordance with an additional aspect of the invention is designed supporting structure, designed for installation on marine or fluvial the bottom, includes many places anchoring provided with a support device supporting structure, means, configured to receive and installed in a predetermined position of a given number of anchor piles supporting structure, and means supported on the support structure to allow manipulation of piles and driving of piles, which serve for fastening the support structure on the sea or river bottom.

In a preferred embodiment, the design of each specified reference device is associated with the adjusting means to enable selective control of the position of the pile in its predetermined mounting position.

In a preferred embodiment, the design of the supporting structure includes equipment/tool to allow the installation of piles, servants for permanent fastening of the support structure on the sea or river bottom in such a way as to enable the vessel for installation of support structures, is participating in the installation of the support structure, to leave the area of the installation, as soon as the supporting structure will be installed correctly, with the necessary equipment for manipulating piles mounted on it.

Rationally necessary equipment can be installed on land, so that all samoustraniajutsia support the design can be quickly lowered to the desired location, thus the carrier may leave the place of installation.

In accordance with another aspect of the present invention is designed supporting structure shell type with at least one design team with support elements on which the supporting structure can safely stand on the sea or river bottom, while the upper part of the support structure is high enough to protrude above the surface.

Rationally in situations where it is desirable to complete the reference design has been shipped, can be mounted a removable top, which stands above the water during the phase of installation of the base structure and which after the install phase may subsequently be removed.

In a rational manner the upper part is removed through the use of a crane mounted on the vessel.

In a preferred embodiment, the design of the supporting structure is equipped with three or four assemblies constructed with the support elements.

The supporting structure is preferably such that it can be lowered to the sea or river bottom, aligned with regard to the flatness of the sea or river bottom to allow attachment of each of modular design with support elements to the sea or river bottom through Buren who I am through each such team of construction insert piles of small diameter piles with a diameter of 5 to 12 inches) and cementing these piles of small diameter in place.

Rational, the drilling process is performed with a temporary structure is mounted in the upper part of the membrane support structure shell type.

In that case, if the supporting structure during installation when the installation is at risk of moving it under the action of currents, waves or wind, more weight can be added to the temporary structure is to maintain sufficient friction on the sea or river bottom during the installation process, and additional cargo can be removed with your hardware for installation after you install anchor piles of small diameter so that the supporting structure will no longer be able to be displaced relative to the sea or river bottom.

Based on the foregoing it should be noted that in accordance with the invention, the design made with the possibility of installing it in the sea (or river), which is made in such a way that it could temporarily stand, due to the fact that it is heavy enough to hold it in a predetermined position by the friction on the seabed, and which has means for providing support for equipment needed for permanent fixing it on mors is Ohm (or river) bottom through the use of piles of small diameter or other devices, the ability to walk in the sea (or river) bottom through the tubular permanent supporting elements, made in one piece with the shell design. If you need additional cargo destined to create sufficient friction to prevent movement that may be temporarily available as ballast to be added to the construction and removed after the operation is complete, the installation of piles of small diameter.

Thus, the developed design with a shell base having one or more permanent tubular supporting elements that can be drilled from a platform mounted above the water level, with the passage of the drill in the sea or river bottom and in which piles of small diameter can be inserted and cemented into place.

In particular, the design includes temporary support members that can be adjusted in height and aligned to allow alignment of the structure before attaching it to the sea or river bottom, while the effort to perform this is provided by hydraulic jacks, screw jacks, or any other similar arrangements.

In a rational manner specified time adjustable support elements may be attached or inside, or outside of regular support e the cops shell or concentrically with the permanent support elements.

Rationally design made with the possibility of placement and alignment of the guide tube between a surface platform or top design and a tubular permanent support elements that are close to sea level, so that the drill string can be deployed with a drilling rig located on the top of the design, through the guide tube and the tubular supporting elements for drilling for Foundation piles of small diameter, or alternatively for driving piles of small diameter in the bottom of the sea.

For a better understanding of the invention and to demonstrate how to implement it into practice, reference is made to the accompanying drawings, in which:

Fig.1 schematically illustrates the overall construction of the support shell design that implements the inventive concept;

Fig.2A, 2b, 2C and 2d respectively illustrate on a larger scale characteristics of the design of the supports included in the design shown in Fig.1;

Fig.3A schematically illustrates a first position of the support structure shown in Fig.1, on the sea or river bottom;

Fig.3b schematically illustrates additional possible position of the support structure shown in Fig.1, on the sea or river bottom;

Fig.4-10 schematically illustrated by sledovatelya stage when attaching the supporting shell design according to Fig.1 to the sea or river bottom through the use of piles of small diameter.

As shown in Fig.1, the supporting structure 1, illustrated in the figure, includes a shell structure 2 includes a vertically standing monolithic columnar core portion 3, based on the team structure 4 of the supporting legs formed of four similar support devices 5, which are uniformly distributed around the column 3. Each support device 5 includes a Central tubular structure formed by the inner pipe 5A and the outer tube 5B, which will be further discussed in detail, and a support 7, which is in contact with the sea or river bottom and which is connected with the outer pipe 5B. Outer tube forms a part of the team structure 4, which itself is connected to the main part 3 of the structure 2 by means of essentially horizontal element 8 connected to the lower end area 9 of the main part 3 of the structure 2 and the tilting element 10 connected to the main part 3 of the structure 2 at a location above the respective horizontal element 8.

Each member in contact with sea/river bottom support attached to the lower end of the pipe 5V via a pivoting connection device 11, which provides the capability of raising or lowering the support 7 consider is Ino outer tube 5B so, how you want to interact with the profile area of the sea or river bottom, on which the bearing 7 should be supported. The design of the concentric tubes can be considered as the anchor for shell structures.

The connecting device 11 is such that the bearing 7 can be tilted relative to the inner tube 5A to allow its angular displacement relative to the vertical axis of the Central structure of the respective support structure 5. Bearing 7 is also made with the possibility of displacement in axial direction up and down relative to the modular design 4, resulting in facilitated acceptable interaction between the support 7 and the adjacent sea or river bottom SB so, to allow adjustments of the supports to ensure that the main part 3 of the shell construction 2 will be displayed vertically.

As provided by that shell design 2 shall be firmly and securely fastened to the sea or river bottom SB, precast parts 4 with the support elements and the support structure 6 should be attached to the sea or river bottom.

In the illustrated embodiment, provided that the design 2 must be mounted on a sea or river bottom through piles of small diameter (not shown in F. the, 1), set in a specified position by means of support devices 5.

In other words, the support device 5 are essentially a dual purpose, with one of their feature is that they provide strong support for the shell construction 2 during its initial installation, that is, during the process of positioning and fixing, and the second function is to facilitate the insertion of piles of small diameter.

For the implementation stages of the setup shell in a predetermined position and its clamping in the installation process, the temporary upper structure 12 is mounted in the upper part of the casing so that the upper structure 12 will be located above the level of the WL water.

The upper structure 12 can carry tools, such as a crane or other forming a lifting and positioning means 13 designed for manipulating piles of small diameter and other elements that are required during the installation steps in a predetermined position and fastening the support structure 1. These elements may include a drilling rig, a device for driving piles along with various items of equipment associated with drilling wells and installing in position and lowering piles of small diameter.

The upper structure 12 may additionally serve to receive any additional the cargo 14, deemed necessary for holding the shell in its predetermined position during its installation, that is, to ensure that the friction on the sea or river bottom SB during installation will remain effective to prevent any movement under the action of currents, waves and/or wind.

As for installation design 2 in a predetermined position and fasten it, an additional important characteristic, which is illustrated by Fig.1, is the presence of the guide tube 15, as shown in the process of its installation in the given position of the valve 13 so that it came into contact with the upper part of the inner tube 5A of the supporting devices 5. This guide tube 15 is designed for clamping or holding in a predetermined position in the upper part of the inner tube 5A to provide direction and protection during drilling and installation of piles of small diameter and cementing, as will be described hereinafter with further drawings.

It is important to note that, as a rule, in practice the guide tube 15 will be lowered to a predetermined position and to direct by means of steel cables (not shown) attached to the upper part of the inner tube 5A shell support device and threaded through a pair of "eye bolts" (not shown) near the base of aiming the second pipe 15. Thus, the cables will ensure the direction of the guide tube 15 strictly at the specified position.

Implementation mechanisms such adjustment will be described later in more detail, and may not necessarily be located as shown on the drawings of this application. It should be noted that on the shell construction 2 can be mounted in other types of constructions/shell structure 2 can carry designs than shown. For example, it may be a lattice frame construction or many vertical columns/pillars.

Further, we consider Fig.2A-2d, which illustrate the construction of the support device 5 in more detail and on a larger scale.

In particular, the data of Fig.2A-2d show, as it was mentioned earlier that the adjustable support device 5 can be used to align the structure 1 after its sinking by barge with a cargo boom or other transport vessel on the sea (or river) bottom SB. In the embodiment used to illustrate the principles used, you can see that there are two hydraulic hoist or hydraulic Jack 16 is provided on each of the supporting device 5, which can be powered from the surface zone or together, or in different ways for raising or lowering the supports 7 or NaClO is and it at some angle.

Fig.2A-2d illustrate, as may be adjustable both in vertical and in the angular direction, and then fixing by creating pressure in the platforms or the jacks 16. The upper ends 17 of hoists or jacks 16 pivotally connected to the holder 18 mounted on the outer tube 5B of the supporting device, while the lower ends 19 of hoists or jacks pivotally connected with the inner tube 5A connected to the support 7 of the respective support device.

As can be noted from Fig.2A and 2b, different actuation lifts or jacks 16 provides the proper inclination of the respective support 7 support device. The slope is shown schematically by arrows THAT show the angle.

As can be seen in Fig.2C and 2d, lifts or jacks 16 can be actuated to raise or lower the support 7 support device relative to the rest of the support device 5. Adjustment in the vertical direction schematically shown by arrows VA.

It should be understood that the tilt can be performed together with the height adjustment, and this possibility is ensured by the design of modular design with support elements.

In practice, there may be used other types of adjusting devices, such as screw jacks (or ele is tropinota, or hydraulic), inflatable bags (filled with liquid or gas), or can actually be used in any suitable device capable of providing the necessary effort. If necessary, may be provided more than two such lifts or jacks 16 for the distribution of loads. It will be shown that the functioning of these lifting or poddomkratit device is only required during the installation process, and they may or left (i.e. written off as a spent material), or recovered for re-use later in other projects.

Further, we consider Fig.3A and 3b, the data of Fig.3 illustrate that the adjustable support device 5 does not have to be installed in places that are concentric with the supporting elements 5D of the support structure 2, as shown in Fig.2. As can be seen from Fig.3A and 3b, a support device 5 can be either mounted on the support elements, 5D, located within the length of the assembled structure 4, such as that shown in Fig.3A, or they can be mounted on raised structures on the outside of the support device 5, as shown in Fig.3b. Specified the first construction is more economical from the point of view of materials, while the latter is probably more stable as the design. P the means of the adjustable support device 5 in a predetermined position apart from the reference elements of the 5D shell design, more space will be available for drilling and installation of piles of small diameter, and, in addition, this design allows to simplify the construction of the support elements.

It should be noted that variants in the implementation shown in Fig.3A and 3b, a support device 5 are actually completely separate from the design according to Fig.1, in which the pipes 5A and 5B form the basic elements for the supporting structure and additionally are designed to receive the guide tube 15. In the case of the embodiments according to Fig.3A and 3b, each of the supporting device 5 includes an inner element 5E, hanging from the respective horizontal beams 11 and a concentric outer tubular element 5F.

Further, we consider Fig.4-10, which show successive stages in the consolidation of the shell of the support structure 2, such as that shown in the previous figures, through piles of small diameter. Thus, Fig.4 illustrates the first stage in the process of constant secure shell support elements on the sea (or river) bottom (SB), while Fig.4 shows as an example an implementation option, in which the adjustable support device 5 are concentric with respect to the supporting elements 5D of the support structure 1. It should be noted that, as explained in the previous paragraph, these adjustable support device 5 can also be used separately from the shell is th design 2, in this case, they would be not visible in Fig.4.

Thus, Fig.4 actually shows the stage at which the guide tube 15 is lowered into the inner tube 5A of the tubular shell design support device 5 up until its lower end 20 will not rely on the sea (or river) bottom SB. Once the guide tube 15 will be in this position, it is clamped at the upper end (not shown in Fig.4) relative to the time the upper structure 12 (not shown in Fig.4).

Fig.5 illustrates how the drill string 21 can be lowered through established thus, the guide tube 15 and is powered by the drilling rig (not illustrated in Fig.1 or 5), but mounted on the upper structure 12 located above the guide tube 15. While usually use a rotary Bur 22, there is also the possibility of driving piles (not shown) through the guide tube 15 in the seabed SB, if the ground condition of the sea or river bottom is suitable. Pile hammer (not shown) may be lowered along the guide tube 15. Cuttings arising from such operations may be washed by using water pumped through the drill string, but this is not illustrated.

Fig.6 shows how, after the surgery the drilling pile 23 of small diameter may be lowered along the guide tube 15, being suspended on a cable 24. The specified cable also carries the hoses liquid solution, which is not illustrated, but which are necessary for subsequent operations to be described.

The cement slurry may be pumped through hoses (not shown) for feeding the liquid solution that is attached to the pile 23 of small diameter, which provide the direction of the cement material in and through holes (not shown) in the pile of small diameter so that it comes out of the bottom of piles of small diameter to be concentric fill the empty space resulting from drilling between the pile of small diameter and drilled the sea floor, cement filling material. In the empty space inject a sufficient quantity of cement to completely fill the empty space to the level of the seabed SB, as schematically illustrated by the reference position 25 in Fig.7.

The completion of this activity, fill with cement mortar can be confirmed through the use of a sensor or sensors at the level of the seabed (not illustrated), which will respond to the output of cement 25bottom.

Fig.8 shows that after hardening of the cement slurry pumped through the pile of small diameter for the formation of cement fill in the El 25, the guide tube 15 is raised on a short distance until its contact with the shell inner tube 5A will not remain only on small length sufficient to ensure holding her in place, in spite of currents or waves. In the figure the lower end of the guide tube 15 is indicated by the reference position 26. A small length can be of the order of 200 or 300 mm, but can be used other options contact interaction, satisfying certain conditions.

Fig.9 shows, as a greater quantity of cement may be pumped or hoses for liquid solution connected with drilled holes (not shown) in the upper part of the pile of small diameter, or directly in the annular space between the pile 23 of a small diameter and the inner part of the inner tube 5A of support. This annular space is filled with cement mortar 25 until, until it reaches the bottom of the guide tube 15. This level can be calculated based on the amount of cement required to fill the space with known dimensions, or can be used in sensors to determine when the proper level is reached.

Hoses and lowering the cable 24 is then cut off from the pile 23 of small diameter and raise back to a slave who can smell the platform 12 of the upper structure to the support structure. Department of hoses and cables can be accomplished by various means which are not illustrated. For example, the coupling may be split and may be held together by a pin, which can be retrieved or by pulling the cable from the zone above the surface, or by applying power to the solenoid, with the help of divers, or vehicles with remote control (ROV) can also be used to perform the disconnection. There are also a number of proprietary products are specifically designed to be run remotely controlled disconnect the connection cables and hoses that can be used for this purpose.

Fig.10 shows a finished supporting element after removing the guide tube 15 and all cables and hoses. You can see that the pile 23 of small diameter is now firmly cemented in the ground, and the pipe support element, and forms tool, capable of withstanding much greater shift or hydrostatic lifting force produced between the structure and the sea floor. The surface area of the piles of small diameter is set to be sufficient for it to bear the load at low voltage levels to avoid delamination of the cement.

At this stage adjustable feet 7 or OST is collected on the spot, or may be provided for disconnecting and removing them for reuse. In conclusion, the temporary upper structure 12, the valve 13 and the corresponding equipment, guide tube (guide tube) 15 or any other tools together with any ballast 14, is added to provide stability during drilling, may be removed through the vessel by crane. For this purpose, can be used a vessel having a smaller size and less expensive compared to the vessel, which is required for delivery and installation in a predetermined position of the entire shell structure 2. The second vessel can also deliver other equipment needed to complete the installation, such as wind turbines or tidal turbine power plants, the surface of the hull or platform, and so on, In the alternative, if you want shell design 2 was completely submerged, detachable upper part at this stage can be removed or replaced with special equipment.

Based on the foregoing, it should be noted that in accordance with the invention, the proposed design, which can be installed in the sea (or river), which is made in such a way that it temporarily stood alone due to the fact that it is heavy enough to hold it in a predetermined position is and friction on the seabed, and which has means for providing support for equipment needed for permanent fixing it on the sea (or river) bottom through the use of piles of small diameter or other means of fastening, the ability to walk in the sea (or river) bottom constant for pipe supporting elements are made in one piece with shell design. If you need additional cargo to create sufficient friction to prevent movement can be temporarily available as ballast to be added to the construction and removed after the operation is complete, the installation of piles of small diameter.

Thus, the developed design with a shell base having one or more permanent tubular supporting elements that can be drilledfrom a platform mounted above the water level, with the passage boraxin sea or river bottom, and in which piles of small diameter can be inserted and cemented into place.

In particular, the design includes temporary support members that can be adjusted in height and aligned to allow alignment of the structure before attaching it to the sea or river bottom, while the effort to perform this is provided by hydraulic jacks, screw jacks is or any other similar arrangements.

1. The method of installation of the support structure (1) on the sea or river bottom, in which constructing a support structure (1), and who are temporarily able to stand being heavy enough to be held in place by friction on the sea or river bottom (SB), before performing the operations required for the permanent fixing of the support structure (1) on the sea or river bottom (SB), and during their execution, with the said construction (1) includes many places anchoring, designed to communicate with the control device (5), made with the possibility of regulation of position and in contact with the sea or river bottom, with each specified device is configured to receive and installed in a predetermined position anchoring means (23), the method includes the following steps, which are:
- transport support structure (1) and its immersion in the sea or river bottom (SB) through the installation vessel,
characterized in that it comprises the steps that:
- establish a support structure (1) to a certain level and with a given orientation relative to the sea or river bottom (SB) using the reference device (5);
- provide anchoring support structure with a sea or river bottom (SB) by anchor means (23) using the media is TV, based on the reference design for possible manipulation of the anchoring means and their immersion.

2. The method according to p. 1, in which the support submersible turbine driven by the flow of water and/or wind turbines on the specified support structure (1).

3. The method according to p. 1 or 2, further comprising a stage on which each cement anchor means cementing material in place of anchoring on which they were located.

4. The method according to p. 1, which provide a temporary structure (12), located in the upper part of the support structure (1), and operations necessary for the permanent anchoring of the support structure (1) with the sea or river bottom, performed on a temporary structure.

5. The method according to p. 1, comprising a stage on which to add additional cargo (14) to the structure (1) if the supporting structure (1) is moved under the action of waves or currents of the wind.

6. The method according to p. 5, including the step, in which, after installation of the anchoring means (23) remove any extra load (14), together with any equipment used when installing the support structure (1) so that the supporting structure will no longer be able to be displaced relative to the sea or river bottom (SB).

7. The method according to p. 1, in which the supporting structure includes a tubular permanent TNA the element and the guide tube, additionally which includes a stage on which to position and align the guide tube between the temporary construction and permanent tubular supporting element.

8. The method according to p. 7, in which a temporary structure includes a drilling rig, the method includes a stage on which deploying a drill string with a drilling rig on a temporary design through the guide tube and tubular permanent support element for drilling for Foundation piles of small diameter or driving piles of small diameter in the sea or river bottom.

9. Supporting structure made with the possibility of installing it on a sea or river bottom (SB), characterized in that the frame (1) made heavy enough so that it temporarily yourself standing on a sea or river bottom (SB) due to the fact that it is heavy enough to hold it in a predetermined position by the friction of the sea or river bottom (SB), and the design includes many places (4) anchoring, designed to communicate with the control device (5), made with the ability to regulate their position and in contact with the sea or river bottom, with each specified anchor location is configured to receive and installed in a predetermined position Anke the means (23), enshrined in the sea or river bottom (SB) by means resting on the supporting structure to allow manipulation and dive anchoring means (23), characterized in that the supporting device (5) can be adjusted in height and aligned to allow positioning of the support structure (1) at a given level and a given orientation before mounting her on the sea or river bottom.

10. Supporting structure on p. 9, characterized in that the frame (1) made in the form of elongated columns (3) to provide support for submersible turbine.

11. Supporting structure under item 9 or 10, characterized in that it contains the temporary additional structure (12) in the upper part of the support structure (1), and temporary structures are the tools/equipment to perform all operations required for the implementation of the permanent anchoring of the support structure (1) with the sea or river bottom (SB).

12. Supporting structure on p. 11, characterized in that a temporary structure (12) made with the ability to incur additional removable cargo (14), so that if the supporting structure (1) during its installation at risk of their movement under the action of currents, waves or wind, the supporting structure (1) is able to maintain sufficient friction the sea or river bottom (SB).

13. Supporting structure on p. 9, in which the reference device (5) contain hydraulic jacks or screw jacks.

14. Supporting structure on p. 9, in which each seat anchor includes an inner tube located within the outer tube and the inner tube is movable within the outer tube.

15. Supporting structure on p. 9, in which the reference device (5) arranged concentrically relative to the locations of the anchor.

16. Supporting structure on p. 9, in which the reference device (5) located within the footprint created places anchoring.

17. Supporting structure on p. 9, in which the reference device (5) located outside of the footprint created places for anchoring.



 

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The invention relates to letterlike and can be used when creating the ice terminal for cargo transportation on the waters without ice flow

FIELD: construction.

SUBSTANCE: method includes deepening and installation of an underwater part of the structure into bottom deposits, fixed fastening of a hollow board to it, made in the form of a ball segment with perforated surface. During assembly of the board its upper part is placed above the surface of the ice cover, and the base is submerged into water. Supply-and-exhaust shafts and tight hatches are placed into the cavity of the board. The underwater part of the platform is equipped with transition gateways and joint assemblies. A tunnel is installed from the platform to the coast, and in it they install a pipe canal, tight partitions, additionally it is equipped with transition gateways, joint assemblies. The tunnel is used as a permanent transport link and moorage for underwater vessels.

EFFECT: increased reliability of operation of hydraulic engineering structures of island type in Arctic seas.

1 dwg

FIELD: construction.

SUBSTANCE: method includes the installation along the platform perimeter of the protective cladding structure. Meanwhile before placing the platform into design position along the platform perimeter with a clearance at least one row of supports from metal piles with round section sunk into unstable bottom sediments or into bed rocks. Into piles the coolers are mounted, and artificial freezing of water and ground around piles, and the monolithic cylinders, formed around piles - ice and grounding in the base and icy in water, shall contact the adjacent cylinders, forming continuous ice and ground in the base and icy in water protective anti-chock and impervious wall.

EFFECT: improvement of efficiency of an engineering protection of platforms of a floating type in conditions of the Arctic shelf.

6 cl, 3 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to development of oil and gas deposits and can be used for anchoring of mining equipment at sea bottom. Proposed method comprises fitting the pile anchor in place by screwing the cylinder in soil, well drilling via wellhead, lowering of reinforced well casing in the well and cementing the string inner space. Note here that casing pipe is pre-furnished with lengthwise sawcuts. Prior to cementing of casing string, charge is lowered to 1.5-2.0 m from well bottom to explode its so that inverted plume is formed in the area if sawcuts as well as cavities in soil to be filled with concrete.

EFFECT: higher reliability of retention.

3 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention is related to facilities of the continental shelf development. An offshore floating platform contains an undersea displacement module, a support subsea module with rigid support columns and binders, and straining ties fixed at seabed anchors. The support columns and binders can be detached from the undersea module in order to escape quickly from an ice-hazardous area and to return back to the abandoned place. The subsea module is made of individual sealed pontoons interconnected by rigid ties capable of limiting relative motion. The support columns of the subsea module are equipped with mechanisms for connection to pontoons of the undersea module and for interconnection of the modules.

EFFECT: improved reliability of the modules coupling/decoupling, simplified ballasting process.

6 cl, 5 dwg

FIELD: construction.

SUBSTANCE: invention relates to construction of platforms to mount drilling and oil production equipment in the sea. The support stand-anchor of the marine platform comprises joined upper section with the upper support site, ballast cisterns-sections and the lower drilling section, in which there is a hydraulic engine installed, to the shaft of the rotor of which a drill is connected, and a pipeline of water drain and a nozzle of water drain are connected to the stator of the hydraulic engine. At the same time on the marine platform in the control cabin the system of filling-emptying of ballast cisterns-sections additionally comprises a compressor for compressed air, the outlet of which via serially connected first valves and three-way switching valves are connected to pipelines of compressed air supply, hydraulic pumps. Between ballast cisterns-sections there are remote support sections, the upper section is made in the form of two coaxial hollow cylinders arranged relative to each other coaxially. The upper support site by means of hinge parts rigidly connected to it and the marine platform, may rotate around the common axis of the hinged joint, and with it the entire support stand of the anchor with removal of the bolt joints by means of its transition from the vertical working position into the horizontal transport position.

EFFECT: expansion of functional capabilities of a support stand-anchor and reduction of axial load.

2 dwg

FIELD: construction.

SUBSTANCE: versions are disclosed regarding implementation of designs of a gravity foundation, which comprises the first and second extended foundation sections divided with an open area and made as capable of maintaining weight in water for the specified structure and resting against the bottom of the water area, and an upper section arranged above the specified open area and made as capable of passing at least partially above water surface to maintain the upper structures. Some versions of implementation additionally contain the first and second inclined sections, which connect foundation sections with the specified upper section.

EFFECT: improved design.

20 cl, 8 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to sea gravity ice-breaking platform to be used in shallow water. Said platform comprises bearing plate composed of hollow body dividing in compartments filled with ballast and top displacement hull with processing and ship equipment built in bearing base deck closed elevation to uncouple them. Inner boundary of said deck elevation is equidistance in plan with floating structure outlines with difference in sizes defined by the relationship: δ=δïã, where δis aforesaid difference, δï is maximum sum of construction deviation of sizes ob said body and hull from rated values, δãis guaranteed clearance required for alignment of top structure with platform bearing base outline.

EFFECT: higher operating efficiency in ice.

2 cl, 2 dwg

FIELD: transport.

SUBSTANCE: invention relates to sea gravity platforms for exploration of oil and gas deposits at continental shelf. Proposed platform comprises submersible offshore platform composed by bottom and top bearing plates, sidewalls and internal bulkheads. Bell consisting of separate sections is hinged to submersible platform bottom part. Every said section comprises vertical wall, stiffness ribs and guide pipes. Stiffness ribs have support elements at the points of abutting on bottom plate. Submersible platform sidewalls includes element for attachment of said bell in transport position and recesses to accommodate retainer pints.

EFFECT: higher stability, low draft, fast assembly and disassembly.

5 dwg

FIELD: construction.

SUBSTANCE: platform comprises a support base made in the form of a bottom board with a developed surface, strongly connected with a perpendicularly installed ice-resistant support block, somewhat protruding towards the bottom below the level of the near-bottom plane of the board. At the same time the ice-resistant support block is made in the form of a cylindrical column; special pipes - water-separating columns installed into the ice-resistant support block, through which operating wells are drilled; a superstructure made in the form of three replaceable floating decks with U-shaped cuts in the centre: decks of civil construction purpose, decks of drilling purpose and decks of operational purpose, at the same time U-shaped cuts are made as congruent to the cross section of the ice-resistant support block; detachable lifting mechanisms installed on the outer side along the perimeter of the U-shaped cut of the deck, engagement or disengagement with the support base is provided, as well as movement and fixation of the deck at the safe height of the ice-resistant support block; piles for fixation of the support base drilled with a drilling plant along a curvilinear trajectory provide for safe operation of the structure.

EFFECT: increased reliability of operation and process safety of an area of water during civil construction and drilling works.

3 cl, 3 dwg

FIELD: construction.

SUBSTANCE: support structure of a marine complex, designed for installation in shallow water, is characterised by the fact that it comprises at least two supports installed in shallow water, every support is made of at least one rigid shell closed along the perimetre and filled inside with stone material, besides, the lower shell of the support is installed on the sea bottom, and each of the above installed shells in the lower part is made of smaller size along the perimeter that the perimetre of the upper part of the more lower shell. Besides, at least a part of the upper shell is made with a cone shape. Each support is made as capable of installation of process objects and equipment of the marine complex and placement of elements that combine separate process objects into a whole marine complex between supports. The specified upper shell has a diameter in the range from 30 to 60 metres.

EFFECT: provision of efficient protection against ice and wave loads, reduction of construction time, lower material intensity.

24 cl, 12 dwg

FIELD: mechanics.

SUBSTANCE: device for anchoring floating structures incorporates mooring bar with ends furnished with the appliance to turn the aforesaid rod about its axis of rotation. At that the rod free end is provided with a sleeve letting the chains or cable to pass there through. The anchor chain passed through one of the aforesaid sleeves is fastened at one end faces of the said floating structure. Besides that, to up the structure stability, the proposed device can be furnished with links connecting the free ends of both mooring rods to the structure in question.

EFFECT: anchoring system causing no floating structure trim difference and providing for stable positioning with minor drift, reduced distance between anchor and floating structure.

11 cl, 15 dwg

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