CN115045342A - Water-swelling plugging ring for pile-first packer and using method thereof - Google Patents
Water-swelling plugging ring for pile-first packer and using method thereof Download PDFInfo
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- CN115045342A CN115045342A CN202210953207.5A CN202210953207A CN115045342A CN 115045342 A CN115045342 A CN 115045342A CN 202210953207 A CN202210953207 A CN 202210953207A CN 115045342 A CN115045342 A CN 115045342A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/004—Sealing liners
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
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- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
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Abstract
The invention belongs to the field of pile-first packers, and particularly relates to a water-swelling plugging ring for a pile-first packer and a using method thereof, wherein the plugging ring comprises a waterproof ring and a water-permeable ring, the waterproof ring and the water-permeable ring are both of hollow annular structures, the water-permeable ring is accommodated in the waterproof ring, the waterproof ring is provided with water-permeable holes, and the water-permeable holes are communicated with the inside of the waterproof ring; the inside independent solidification district and the inflation district of being divided into of circle that permeates water, the solidification district intussuseption is filled with and meets water coagulation powder, and inflation district intussuseption is filled with and meets water expanding material. The plugging ring floats in seawater after being immersed in seawater, the seawater enters the waterproof ring from the water permeable holes and then permeates the water permeable ring, and the water swellable material swells after contacting the seawater to fill the volume of the water permeable ring and plug the annular gap; the water-soluble setting powder is set into solid after contacting with seawater. The invention has good applicability, and can block the annular gap by the volume expansion of the self-body, thereby being well adapted to the condition of pile deflection.
Description
Technical Field
The invention belongs to the field of pile-first packers, and particularly relates to a water-swelling plugging ring for a pile-first packer and a using method thereof.
Background
At present, the annular gap is blocked by adopting a bowl-shaped rubber plate structure of the prior pile packer. However, the pipe frame is in a deviated pile condition during installation, and when the deviated pile condition occurs, the side with small clearance can cause slurry leakage because the rubber plate is wrinkled because the rubber plate has incompressibility.
Disclosure of Invention
In order to solve the problem of slurry leakage caused by the wrinkling of a bowl-shaped rubber plate due to pile deviation of a pile-first packer, the invention aims to provide a water-swelling plugging ring for the pile-first packer and a using method thereof.
The purpose of the invention is realized by the following technical scheme:
the plugging ring comprises a waterproof ring and a water permeable ring, wherein the waterproof ring and the water permeable ring are both hollow annular structures, the water permeable ring is accommodated in the waterproof ring, the waterproof ring is provided with water permeable holes, and the water permeable holes are communicated with the inside of the waterproof ring; the inside independent solidification district and the inflation district of divideing into of circle that permeates water, the solidification district intussuseption is filled with and meets water solidification powder, inflation district intussuseption is filled with and meets water expanding material.
Wherein: and the waterproof ring is provided with an installation strip for installing on the packer.
The installation strip forms for waterproof circle inner wall extends downwards along the axial, the installation strip is cyclic annular a plurality of bolt holes have evenly been seted up along the circumferencial direction on the installation strip.
The hole of permeating water is seted up in the bottom of waterproof circle, the circle of permeating water leans on the bottom surface that the action of gravity fell in waterproof circle before meeting water, and covers on the hole of permeating water.
The waterproof ring is characterized in that a base body of the waterproof ring is made of elastic fiber materials, and waterproof elastic material layers are coated on the elastic fiber materials.
The solidification zone is located above the expansion zone.
The use method of the water-swelling plugging ring for the pile packer comprises the following steps:
the plugging ring floats in seawater after being immersed in seawater, the seawater is immersed into the waterproof ring from a water permeable hole on the waterproof ring, then the seawater penetrates through the water permeable ring in the waterproof ring, and a water swelling material in a swelling area in the water permeable ring starts to swell after contacting the seawater, so that the volume of the water permeable ring is filled up, and an annular gap is plugged; the water-meeting solidification powder in the internal solidification area of the water-permeable ring begins to solidify into solid with required hardness after contacting seawater, and the annular gap cement paste is blocked under the combined action of the solidification area and the expansion area.
The invention has the advantages and positive effects that:
1. the invention has good applicability, blocks the annular gap by the self volume expansion, can well adapt to the condition of deviated piles, and avoids the problem of slurry leakage caused by the wrinkling of the traditional bowl-shaped packer.
2. The earliest grouting operation was done by priming, i.e. first a certain height of grout was poured into the bottom of the annulus, and then the remaining grout was poured after the grout had set. The setting zone arranged in the invention is inspired from the operation mode, a layer of setting zone is arranged above the expansion zone, and the setting zone can play a role in protecting the expansion zone below on one hand and can play a better role in plugging and supporting the cement slurry on the upper part on the other hand.
3. The design of the water permeable holes can protect the internal water-swellable material. When rainwater is met, the water permeable holes are hidden at the bottom, rainwater cannot permeate into the water permeable ring, and when the plugging ring is completely immersed into seawater, the plugging ring floats, and the seawater permeates into the waterproof ring from the bottom, so that the water permeable ring starts to play a role.
4. In the installation process of the jacket, the construction equipment and the constructors are different, so that the time used by the installation process is different; in such conditions it is necessary to ensure that the expansion ring completes the expansion process before the grouting operation begins, thereby completing the plugging of the annular gap. The invention can control the expansion rate by adjusting the proportion of the water-swellable material in the expansion area, thereby meeting the project requirements.
Drawings
FIG. 1 is a schematic perspective view of an occlusion ring according to the present invention;
FIG. 2 is a second schematic perspective view of the plugging ring of the present invention;
FIG. 3 is a cross-sectional view of the structure of the occluding ring of the present invention;
FIG. 4 is an enlarged view of a portion of the plugging ring of the present invention in a radial section;
FIG. 5 is a view showing the use of the present invention in a Y-type packer;
wherein: 1. waterproof ring, 2, water-permeable ring, 3, solidification zone, 4, expansion zone, 5, water-permeable hole, 6, mounting strip, 7, bolt hole, 8, plugging ring, 9 and Y-shaped packer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the plugging ring 8 of the present invention includes a waterproof ring 1 and a water permeable ring 2, wherein the waterproof ring 1 and the water permeable ring 2 are both hollow ring structures, the water permeable ring 2 is accommodated in the waterproof ring 1, the waterproof ring 1 is provided with water permeable holes 5, and the water permeable holes 5 are communicated with the inside of the waterproof ring 1; the inside independent 3 and the inflation district 4 of solidifying of dividing into of circle of permeating water 2, the 3 intussuseption of solidifying is filled with and meets water solidification powder, and 4 intussuseption of inflation district are filled with and meet water expanding material.
The base body of the waterproof ring 1 of the embodiment is made of elastic fiber materials, and waterproof elastic material layers are coated on the elastic fiber materials; the elastic fiber material may be nylon or lycra fiber (nylon is selected here), and the waterproof elastic material may be polyurethane, polysulfide rubber, natural rubber or silica gel (polyurethane is selected here). In order to adapt to different packers, be equipped with the installation strip 6 that is used for installing on the packer on waterproof circle 1 of this embodiment, installation strip 6 forms for waterproof circle 1 inner wall along axial downwardly extending, and installation strip 6 is cyclic annular, has evenly seted up a plurality of bolt holes 7 along the circumferencial direction on installation strip 6. The installation strip 6 can be integrally formed with the waterproof ring 1, or the installation strip 6 can be manufactured separately, and then the installation strip 6 is connected with the waterproof ring 1. When the plugging ring 8 is provided with the mounting strip 6, the plugging ring can be fixed on a Y-shaped packer in a bolt connection mode, as shown in FIG. 5; when the plugging ring 8 is not provided with the installation strip 6, the plugging ring 8 can be placed into a cavity of a composite packer with a required space, and the composite packer can be a composite packer which is published in 2021, 6 and 15, and has the publication number of CN 112962612A.
The hole 5 of permeating water of this embodiment is seted up in waterproof ring 1's bottom, both avoided the rainwater infiltration to circle 2 permeates water and leans on the bottom surface of action of gravity to fall in waterproof ring 1 before meeting water, and covers on hole 5 permeates water. When seawater enters the waterproof ring 1 from the water permeable holes 5, the seawater can contact the water permeable ring 2.
The water-permeable ring 2 of the embodiment is made of a water-permeable material, can be made of non-woven fabric or woven fabric (non-woven fabric is selected here), can ensure that seawater smoothly permeates through, and can prevent the filler inside the water-permeable ring 2 from overflowing.
The water-curable powder filled in the curing zone 3 of this embodiment may be portland cement labeled PO42.5, which can ensure smooth curing under seawater conditions to form a solid with a desired hardness.
The water-swellable material filled in the swelling area 4 in this embodiment may be acrylate copolymer or polyurethane prepolymer, the acrylate copolymer may be one or more than two of starch-grafted acrylate, grafted acrylamide, high-substitution-degree cross-linked carboxymethyl cellulose, cross-linked carboxymethyl cellulose-grafted acrylamide, or cross-linked hydroxyethyl cellulose-grafted acrylamide polymer, and the polyurethane prepolymer may be super absorbent resin SAP. The general water-swellable material has good swelling rate in a fresh water environment, but the swelling rate in a seawater environment is greatly limited. The water-swellable material of the embodiment can have a high swelling ratio (10-500 times) under the seawater condition, and the swelling rate and the swelling force are controlled by adjusting the formula proportion.
The solidification zone 3 of this embodiment is located inflation zone 4's top, and inflation zone 4 can increase by the volume after meeting water inflation to the annular clearance shutoff. But the hardness of the water-swelling material in the swelling area 4 is extremely low after water absorption, so that the setting of the solidification area 3 can protect the swelling area 4 below on one hand and can play a better role in plugging and supporting the cement paste on the upper part on the other hand.
The invention discloses a using method of a water-swelling plugging ring for a pile-first packer, which comprises the following steps:
the plugging ring 8 floats in seawater after being immersed in seawater, the seawater is immersed into the waterproof ring 1 from the water permeable holes 5 on the waterproof ring 1, then the seawater penetrates through the water permeable ring 2 in the waterproof ring 1, and the water swelling material in the solidification region 3 in the water permeable ring 2 is expanded after contacting the seawater, so that the volume of the water permeable ring 2 is filled, and the annular gap is plugged; the water-meeting solidification powder in the expansion area 4 in the water-permeable ring 2 begins to solidify into solid with required hardness after contacting with seawater, and plays a role in blocking annular gap cement slurry under the combined action of the solidification area 3 and the expansion area 4.
Claims (7)
1. The utility model provides an earlier stake packer with meeting water inflation shutoff circle which characterized in that: the waterproof ring comprises a waterproof ring (1) and a water permeable ring (2), wherein the waterproof ring (1) and the water permeable ring (2) are both hollow annular structures, the water permeable ring (2) is accommodated in the waterproof ring (1), a water permeable hole (5) is formed in the waterproof ring (1), and the water permeable hole (5) is communicated with the inside of the waterproof ring (1); the water permeable ring (2) is internally divided into an independent solidification area (3) and an expansion area (4), wherein water solidification powder is filled in the solidification area (3), and water expansion material is filled in the expansion area (4).
2. The pile-first packer uses water-swelling shutoff circle of claim 1, characterized in that: and the waterproof ring (1) is provided with an installation strip (6) for installing on the packer.
3. The pile-first packer uses water-swelling shutoff circle of claim 2, characterized in that: installation strip (6) form for waterproof circle (1) inner wall along axial downwardly extending, installation strip (6) are cyclic annular installation strip (6) are gone up along the circumferencial direction and have evenly been seted up a plurality of bolt holes (7).
4. The pile-first packer uses water-swelling shutoff circle of claim 1, characterized in that: the bottom of waterproof circle (1) is seted up in hole (5) of permeating water, it falls the bottom surface in waterproof circle (1) to pass through water circle (2) before meeting water by the action of gravity to cover on hole (5) of permeating water.
5. The pile-first packer uses water-swelling shutoff circle of claim 1, characterized in that: the base body of the waterproof ring (1) is made of elastic fiber materials, and waterproof elastic material layers are coated on the elastic fiber materials.
6. The pile-first packer uses water-swelling shutoff circle of claim 1, characterized in that: the solidification zone (3) is located above the expansion zone (4).
7. The use method of the water-swelling sealing ring for the pile-first packer of any one of claims 1 to 6 is characterized in that: the plugging ring (8) floats in seawater after being immersed in seawater, the seawater is immersed into the waterproof ring (1) from a water permeable hole (5) on the waterproof ring (1), then the seawater permeates the water permeable ring (2) in the waterproof ring (1), and a water swelling material in a swelling area (4) in the water permeable ring (2) starts swelling after contacting the seawater, so that the volume of the water permeable ring (2) is filled, and an annular gap is plugged; the water-meeting solidification powder in the internal solidification area (3) of the water-permeable ring (2) begins to solidify into solid with required hardness after contacting seawater, and the annular clearance cement slurry is blocked under the combined action of the solidification area (3) and the expansion area (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210953207.5A CN115045342B (en) | 2022-08-10 | 2022-08-10 | Water-swelling plugging ring for pile-first packer and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210953207.5A CN115045342B (en) | 2022-08-10 | 2022-08-10 | Water-swelling plugging ring for pile-first packer and using method thereof |
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| Publication Number | Publication Date |
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| CN115045342A true CN115045342A (en) | 2022-09-13 |
| CN115045342B CN115045342B (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210953207.5A Active CN115045342B (en) | 2022-08-10 | 2022-08-10 | Water-swelling plugging ring for pile-first packer and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246144A1 (en) * | 2022-06-24 | 2023-12-28 | 衡橡科技股份有限公司 | Y-shaped packer |
Citations (6)
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| JP2006226058A (en) * | 2005-02-21 | 2006-08-31 | Kyokado Eng Co Ltd | Grouting construction method and injection pipe device |
| CN113062313A (en) * | 2021-03-15 | 2021-07-02 | 湖北工业大学 | Prefabricated pile tip suitable for high water level area and construction method thereof |
| CN113338279A (en) * | 2021-05-08 | 2021-09-03 | 江苏富路建设有限公司 | Anticorrosive stagnant water stock |
| CN214530673U (en) * | 2021-03-16 | 2021-10-29 | 衡橡科技股份有限公司 | Combined packer |
| CN114150684A (en) * | 2021-12-29 | 2022-03-08 | 广东省基础工程集团有限公司 | Plugging device for dewatering well and construction method |
| WO2022147999A1 (en) * | 2021-01-05 | 2022-07-14 | 江苏凯伦建材股份有限公司 | Waterproof structure and method for underground foundation pit dewatering well |
-
2022
- 2022-08-10 CN CN202210953207.5A patent/CN115045342B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226058A (en) * | 2005-02-21 | 2006-08-31 | Kyokado Eng Co Ltd | Grouting construction method and injection pipe device |
| WO2022147999A1 (en) * | 2021-01-05 | 2022-07-14 | 江苏凯伦建材股份有限公司 | Waterproof structure and method for underground foundation pit dewatering well |
| CN113062313A (en) * | 2021-03-15 | 2021-07-02 | 湖北工业大学 | Prefabricated pile tip suitable for high water level area and construction method thereof |
| CN214530673U (en) * | 2021-03-16 | 2021-10-29 | 衡橡科技股份有限公司 | Combined packer |
| CN113338279A (en) * | 2021-05-08 | 2021-09-03 | 江苏富路建设有限公司 | Anticorrosive stagnant water stock |
| CN114150684A (en) * | 2021-12-29 | 2022-03-08 | 广东省基础工程集团有限公司 | Plugging device for dewatering well and construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246144A1 (en) * | 2022-06-24 | 2023-12-28 | 衡橡科技股份有限公司 | Y-shaped packer |
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| CN115045342B (en) | 2022-11-01 |
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