CN209891230U - Cylindrical foundation structure with water-resisting film for geological exploration platform - Google Patents
Cylindrical foundation structure with water-resisting film for geological exploration platform Download PDFInfo
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- CN209891230U CN209891230U CN201920545993.9U CN201920545993U CN209891230U CN 209891230 U CN209891230 U CN 209891230U CN 201920545993 U CN201920545993 U CN 201920545993U CN 209891230 U CN209891230 U CN 209891230U
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- stop film
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Abstract
The utility model discloses a section of thick bamboo type foundation structure for taking water-stop film in geological exploration platform, by a basic section of thick bamboo, the water-stop film, connecting tube and valve are constituteed, a basic section of thick bamboo sets up the lamina tecti for the upper end, the lower extreme is open drum, establish inside and outside advance emission pipeline and the valve of a basic section of thick bamboo of intercommunication on the lamina tecti of a basic section of thick bamboo, the water-stop film is placed inside a basic section of thick bamboo, the edge seal of water-stop film is fixed in the section of thick bamboo wall bottom of a basic section of thick bamboo, link to each other the top of water-stop film with the downside of basic section of thick bamboo lamina tecti with the cable, the pipeline. The invention has the beneficial effects that: the method is suitable for the soft soil layer seabed foundation soil with any thickness and is also suitable for the seabed foundation soil without the soft soil layer.
Description
Technical Field
The invention belongs to the field of geological exploration facilities, and particularly relates to a cylindrical foundation structure with a water-resisting membrane for an offshore geological exploration platform.
Background
The offshore geological exploration adopts a cylindrical foundation platform structure as a drilling working platform, has the characteristics of good stability, strong wind and wave resistance and simple and convenient positioning and migration, has more patents, but is not basically popularized and applied in engineering, and the main reason is that the conventional cylindrical foundation structure has poor adaptability to the foundation.
On the foundation with thick seabed surface layer and shallow soft soil layer, the applicability of the conventional cylindrical foundation structure is better. However, when the soft soil layer is thin and the shallow foundation is mixed with a sand layer or a hard soil layer, the barrel-type foundation structure is difficult to sink, and the depth for maintaining the platform structure to be stable is difficult to achieve. The section of thick bamboo type basis of prospecting usefulness generally adopts the steel construction, the section of thick bamboo wall steel sheet is thinner, it is less to bury the degree of depth when the section of thick bamboo wall, upper portion is when the water in addition in the section of thick bamboo, section of thick bamboo type foundation structure's bearing capacity is mainly provided by the frictional force of the section of thick bamboo wall inboard outside that buries with the cohesion, the bearing capacity is less, the leakproofness of the section of thick bamboo water is also generally relatively poor under this condition, under upper platform load effect, the section of thick bamboo is interior water body can outwards the seepage, the section of thick bamboo wall sinks, when platform load or ground bed soil layer are inhomogeneous.
Disclosure of Invention
In order to solve the above problems, the present invention provides a cylindrical foundation structure with a water-stop film for a geological exploration platform, which has a high adaptability to the seabed foundation soil.
In order to achieve the purpose, the invention adopts the technical scheme that: a cartridge style substructure with a water barrier for a geological exploration platform, comprising: the device comprises a base cylinder and a top cover plate, wherein the base cylinder is a cylinder with an open lower end, a water-stop film is arranged in the base cylinder, the edge of the water-stop film is hermetically fixed at the bottom end of the cylinder wall of the base cylinder, and a sling rope is arranged at the top of the water-stop film and is connected with the lower side of the top cover plate of the base cylinder; the water-resisting film is provided with a pipeline which passes through the top cover plate and leads to the outside of the foundation cylinder, and the water-resisting film pipeline is provided with a valve; and a top cover plate of the base cylinder is provided with a feeding and discharging pipeline communicated with the inside and the outside of the base cylinder, and the feeding and discharging pipeline is provided with a valve.
The waterproof membrane is cylindrical and telescopic in the height direction, and the diameter of the waterproof membrane after being unfolded is larger than that of the base cylinder, and the height of the waterproof membrane is larger than that of the base cylinder.
The water-resisting film is a rubber bag.
The straightened length of the sling is equal to the height of the base cylinder.
The sling is a hose.
The diameter of the basic cylinder is 2.0-6.0 m, and the height is 2.0-9.0 m.
The upper and lower bearing forces of the water-stop film are kept balanced.
The invention has the beneficial effects that: the adaptability to the seabed foundation soil is strong, no matter the depth of the cylinder wall of the cylinder type foundation structure in the soil is large or small, if the water in the cylinder can be ensured not to be discharged, namely the water in the cylinder can bear pressure, the bearing capacity of the cylinder type foundation structure is provided by the friction force and the cohesive force of the inner side and the outer side of the cylinder wall of the soil entering section, and the sandy soil layer or the hard soil layer at the lower part in the cylinder can also provide the bearing capacity, so that the bearing capacity of the cylinder type foundation structure can be greatly improved, the sinking amount of the cylinder wall is greatly reduced under the action of the upper platform load, and the platform can not be obviously inclined even if the platform load or the foundation soil layer is not uniform; the method is not only suitable for the seabed foundation soil with a thick soft soil layer, but also suitable for the seabed foundation soil without the soft soil layer or with a thin soft soil layer.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention installed in place.
In the drawings
1. Foundation barrel 2, water-stop film 3 and foundation barrel top cover plate
4. Water-proof film pipeline 5, water-proof film pipeline valve 6, intake and discharge pipeline valve
7. An inlet and outlet pipeline 8, a sling 9 and a soft soil layer
10. Sand or hard soil layer
Detailed Description
The invention is described below with reference to the accompanying drawings.
As shown in fig. 1, a section of thick bamboo type foundation structure for taking water-stop film in geological exploration platform, by a basic section of thick bamboo 1, water-stop film 2, connecting tube and valve are constituteed, a basic section of thick bamboo sets up lamina tecti 3 for the upper end, the lower extreme is open drum, establish the inside and outside discharge tube 7 that advances of intercommunication basic section of thick bamboo on the lamina tecti 3 of a basic section of thick bamboo, advance and be equipped with valve 6 on the discharge tube 7, water-stop film 2 places inside a basic section of thick bamboo 1, the marginal sealing of water-stop film is fixed in the section of thick bamboo wall bottom of a basic section of thick bamboo, it links to each other with the downside of basic section of thick bamboo lamina tecti 3 with the top of water-stop film with hoist cable 8, the pipeline 4.
The foundation cylinder 1, the top cover plate 3, the cylinder outer section of the water-stop film pipeline 4 and the inlet and outlet pipeline 7 are all made of steel or alloy materials. The inner section of the water-stop film pipeline 4 is a flexible hose. The base cylinder 1 has a diameter of 5m and a height of 6 m.
The water-stop film 2 is cylindrical, made of rubber materials, and is telescopic in the height direction, and the diameter of the water-stop film after being unfolded is 5.2m, and the height of the water-stop film is 6.2 m. The pressures borne by the upper and lower parts of the water-stop film are basically balanced, and the manufacturing material does not need high strength.
The slings 8 are made of a flexible material and have a straightened length equal to the height of the base drum.
And (3) groups or more of the cylindrical foundation structures of the invention are rigidly connected with the upper platform structure to form the cylindrical foundation offshore geological exploration working platform with the water-resisting film.
The installation of the drum type foundation structure of the present invention is carried out by the following steps and means:
(1) when the marine geological exploration platform is towed on water for a long distance, a valve on a water-stop film pipeline and a valve on an intake and discharge pipeline are closed, air is filled into a space enclosed by a foundation cylinder and a water-stop film, and the marine geological exploration platform is towed to an installation place by using an air floatation mode for installation and positioning;
(2) opening a valve on the water-stop film pipeline and a valve on the inlet and outlet pipeline, discharging gas in the foundation cylinder, feeding water into the cylinder, and sinking the cylinder;
(3) opening a valve on the water-stop film pipeline, filling water into the space above the water-stop film through the inlet and outlet pipeline, extruding water in the space between the lower part of the water-stop film and the seabed mud surface in the barrel until the water-stop film is tightly attached to the seabed mud surface in the barrel, and stopping water injection;
(4) closing a valve on the water-proof membrane pipeline, pumping water in the foundation cylinder through the inlet and outlet pipeline, and enabling the bottom end of the cylinder wall of the foundation cylinder to penetrate through the soft soil layer and sink into the top surface of the sand layer or the hard soil layer, as shown in figure 1;
(5) and closing the valve on the water-stop film pipeline and the valve on the intake and discharge pipeline, and after the platform structure is installed, carrying out geological drilling work on the platform.
After the geological exploration work is finished, the cylindrical foundation structure is migrated by the following steps and modes:
(6) closing a valve on the water-resisting membrane pipeline, opening a valve on the water inlet and outlet pipeline, injecting water into the upper space of the water-separating membrane in the barrel through the water inlet and outlet pipeline, loosening the foundation barrel from the soil layer, and moving the foundation barrel upwards until the foundation barrel is completely pulled out of the soil layer;
(7) if the platform structure needs to be hauled on water in a short distance, a valve on a water-stop film pipeline and a valve on a water inlet and discharge pipeline are opened, the water is filled into the barrel through the water-stop film pipeline, the water in the upper space of the water-stop film in the barrel is completely extruded, the top of the basic barrel floats out of the water surface, and the platform structure floats on the water surface and is hauled to another installation site; if the platform structure needs to be towed on water remotely, the valve on the water-stop film pipeline is closed, the valve on the water-stop film pipeline is opened, the cylinder is inflated through the water inlet and outlet pipeline, the water surface floats to the top of the basic cylinder, and the platform structure floats on the water surface to be towed remotely.
Claims (7)
1. A cartridge style substructure with a water barrier for a geological exploration platform, comprising: basic section of thick bamboo (1) and lamina tecti (3), basic section of thick bamboo (1) is the open drum of lower extreme, characterized by: a water-stop film (2) is arranged in the base cylinder, the edge of the water-stop film is hermetically fixed at the bottom end of the cylinder wall of the base cylinder, and a sling (8) is arranged at the top of the water-stop film and is connected with the lower side of a top cover plate (3) of the base cylinder; the water-resisting film is provided with a pipeline (4) which passes through the top cover plate (3) and leads to the outside of the foundation cylinder, and a water-resisting film pipeline valve (5) is arranged on the water-resisting film pipeline (4); and a top cover plate (3) of the base cylinder is provided with a feeding and discharging pipeline (7) communicated with the inside and the outside of the base cylinder, and the feeding and discharging pipeline (7) is provided with a feeding and discharging pipeline valve (6).
2. The tubular infrastructure with a water barrier for use in a geological exploration platform of claim 1, wherein: the waterproof membrane (2) is cylindrical and telescopic in the height direction, the diameter of the waterproof membrane after being unfolded is larger than that of the base cylinder (1), and the height of the waterproof membrane is larger than that of the base cylinder.
3. The tubular infrastructure with a water barrier for use in a geological exploration platform as claimed in claim 2, wherein: the waterproof membrane (2) is a rubber bag.
4. The tubular infrastructure with a water barrier for use in a geological exploration platform of claim 1, wherein: the length of the sling (8) after straightening is equal to the height of the base cylinder.
5. The tubular infrastructure with a water barrier for use in a geological exploration platform of claim 4, wherein: the sling (8) is a hose.
6. The tubular infrastructure with a water barrier for use in a geological exploration platform of claim 1, wherein: the diameter of the base cylinder (1) is 2.0-6.0 m, and the height is 2.0-9.0 m.
7. The tubular infrastructure with a water barrier for use in a geological exploration platform of claim 1, wherein: the upper bearing pressure and the lower bearing pressure of the water-stop film (2) are kept balanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920545993.9U CN209891230U (en) | 2019-04-19 | 2019-04-19 | Cylindrical foundation structure with water-resisting film for geological exploration platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920545993.9U CN209891230U (en) | 2019-04-19 | 2019-04-19 | Cylindrical foundation structure with water-resisting film for geological exploration platform |
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| CN209891230U true CN209891230U (en) | 2020-01-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944268A (en) * | 2019-04-19 | 2019-06-28 | 中交第一航务工程勘察设计院有限公司 | For the cylinder-shaped foundation structure with water-separating film in geological prospecting platform |
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2019
- 2019-04-19 CN CN201920545993.9U patent/CN209891230U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944268A (en) * | 2019-04-19 | 2019-06-28 | 中交第一航务工程勘察设计院有限公司 | For the cylinder-shaped foundation structure with water-separating film in geological prospecting platform |
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