CN115434311A - External mobile jet flow suction type caisson foundation reinforcing device and reinforcing method - Google Patents
External mobile jet flow suction type caisson foundation reinforcing device and reinforcing method Download PDFInfo
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- CN115434311A CN115434311A CN202211259358.7A CN202211259358A CN115434311A CN 115434311 A CN115434311 A CN 115434311A CN 202211259358 A CN202211259358 A CN 202211259358A CN 115434311 A CN115434311 A CN 115434311A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000004568 cement Substances 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 239000011440 grout Substances 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 9
- 239000004927 clay Substances 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/64—Repairing piles
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/18—Foundations formed by making use of caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to the field of civil engineering, in particular to an external mobile jet flow suction type caisson foundation reinforcing device and a reinforcing method. The reinforcing device comprises a servo motor, a grouting device, a grouting pipe, a guide pipe, a movable jet nozzle, a lifting device and a barge; a servo motor, a mud jacking device and a lifting device are assembled on the barge; the guide pipe is positioned in the suction type caisson foundation; the grouting device is communicated with the movable jet nozzle through a grouting pipe; the lifting device is used for lifting the mud jacking pipe, and the movable jet nozzle is positioned in the guide pipe. The invention provides an external mobile jet flow suction type caisson foundation reinforcing device. The side wall is provided with a movable jet flow pipeline, the grouting pipeline is lifted and pulled in a rotating mode through the positioning device and the lifting device, so that the high-speed grout can continuously cut soft clay, and cement soil reinforcing bodies are formed around the suction type caisson foundation through stirring, and the horizontal and vertical bearing capacity of the suction type caisson foundation is improved.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to an external mobile jet flow suction type caisson foundation reinforcing device and a reinforcing method.
Background
Most of global offshore wind power is in a range of less than 50m, the resource development in the deep sea field is in an exploration stage, and the application of the traditional fixed fan to wind power generation in the deep sea field inevitably causes the disadvantages of high cost, difficult construction and the like. Therefore, the floating offshore wind turbine replaces the traditional fixed wind turbine and becomes the development direction of wind power in the future.
The suction type caisson foundation is a novel foundation form of a deep sea platform structure and meets the requirements of fan construction in the deep sea field. Compared with the traditional pile foundation, the suction caisson foundation has the advantages of convenience in transportation and construction, short construction period, repeatability in use, low manufacturing cost and the like, and is increasingly applied to ocean engineering. Whether the foundation is stable or not is a key factor for determining whether the ocean platform can be normally used, and the suction type caisson foundation in the deepwater ocean platform mainly bears the pulling load transferred by the action of wind waves on the upper structure, so that the vertical bearing capacity of the suction type caisson foundation is mainly the pulling resistance bearing capacity.
When the suction caisson foundation is slowly pulled out, the seepage motion in the foundation causes the pore water pressure of silt in the caisson to be fully dissipated, the soil body is in a complete drainage state, the foundation is locally sheared and damaged, and the pulling-resistant bearing capacity mainly depends on the friction force between the wall of the caisson and the soil body and the self weight of the foundation. The bearing capacity is low. Therefore, the bearing capacity can be improved from three aspects, 1, the size of the caisson is increased; 2. carrying out foundation reinforcement; 3. the self weight of the suction type caisson foundation is improved. However, the first and second methods are uneconomical, costly, time-consuming and ineffective. The third method increases the amount of steel used in the caisson, which inevitably increases the cost and is uneconomical. How to effectively, conveniently and economically improve the pulling-resistant bearing capacity of the suction caisson foundation is a difficult problem in the application of the current suction caisson foundation. Meanwhile, how to resist the horizontal bearing capacity is also a difficult problem in engineering at present. The existing post grouting technology can improve the resistance of the side wall soil of the caisson and the ultimate bearing capacity of a pile foundation, so that the technology is widely applied and developed in recent years. However, due to the problems of large section space, low grouting Kong Kaisai rate, uneven slurry distribution and the like of the existing pile side rear grouting device, the injected slurry cannot cover the whole range of the pile body and a pile-soil system cannot effectively form a system working closely and cooperatively; meanwhile, the existing pile end and pile side post-grouting devices are mutually independent, so that the grouting pipeline is complex, the problems of grouting pipeline disorder, pressure leakage and the like in the construction process are easy to occur, and the post-grouting often cannot achieve the required effect. Therefore, how to solve the problems is the key for effectively improving the horizontal and vertical bearing capacity of the pile foundation. According to the invention, the movable jet flow pipeline is arranged on the side wall of the large-diameter steel pipe foundation, the grouting pipeline is lifted and pulled in a rotating manner, so that the high-speed grout can continuously cut soft clay, and the soft clay is stirred to form a cement soil reinforcement body around the large-diameter steel pipe foundation, so that the horizontal and vertical bearing capacity of the large-diameter steel pipe foundation is improved. The method can solve the problem of uneven post grouting.
Disclosure of Invention
According to the suction-type caisson foundation provided by the invention, the movable jet flow pipeline is arranged on the side wall, the fixed pulley rotating shaft in the positioning device rotates, the pulling rope in the pulling device pulls the lifting mud-pressing pipeline under the driving action of the motor, so that the high-speed mud continuously cuts the soft clay, and the soft clay is stirred to form a cement soil reinforcing body around the suction-type caisson foundation, so that the horizontal and vertical bearing capacity of the suction-type caisson foundation is improved.
The invention adopts the following technical scheme
The invention relates to an external mobile jet suction type caisson foundation reinforcing device which comprises a servo motor, a mud jacking device, a mud jacking pipe, a guide pipe, a mobile jet nozzle, a lifting device, a positioning device and a barge, wherein the servo motor is connected with the mud jacking pipe;
a servo motor, a mud jacking device and a lifting device are assembled on the barge; the guide pipe is positioned in the suction caisson foundation; the grouting device is communicated with the movable jet nozzle through a grouting pipe; the lifting device is used for lifting the mud jacking pipe, and the movable jet nozzle is positioned in the guide pipe.
The positioning device comprises a braking mechanism, a fixed pulley and a tension rope, wherein the braking mechanism is an electromagnetic brake, when a rotating shaft of the fixed pulley is loosened, the fixed pulley freely rotates, so that the position of a jet flow pipeline dragged by the tension rope can be moved and adjusted, and when the rotating shaft of the fixed pulley is fixed by the braking mechanism, the fixed pulley is prevented from rotating, so that the hovering positioning of the jet flow pipeline dragged by the tension rope is realized.
The invention relates to an external mobile jet suction type caisson foundation reinforcing device, which is characterized in that a lifting device comprises a movable pulley frame and a tension rope, wherein the movable pulley frame is provided with a plurality of movable pulleys; the movable pulley frame is arranged on the barge, one end of a tension rope is connected with a servo motor, and the tension rope passes through the movable pulley and the other end of the tension rope moves to connect with the jet nozzle.
The invention relates to an external mobile jet suction type caisson foundation reinforcing device, wherein a grouting device comprises a closed cement paste stirring barrel and a grouting machine; the feed end of the grouting machine is communicated with the closed cement slurry stirring barrel, and the discharge end of the grouting machine is communicated with the total grouting pipe;
the invention discloses an external mobile jet flow reinforced suction type caisson foundation according to claim 1, wherein a plurality of guide pipes which are guided from top to bottom and are distributed and arranged are arranged on the side wall of the suction type caisson foundation, the guide pipes are steel pipes, and the outer walls of the guide pipes are welded with the inner side wall of the suction type caisson foundation. And movable jet flow nozzles are arranged in the guide pipes, and each jet flow nozzle is communicated with the grouting device through a movable jet flow pipeline.
The invention relates to an external movable jet flow reinforced suction type caisson foundation, wherein N grout outlet holes are formed in a movable jet flow nozzle, and a nozzle part of the movable jet flow nozzle is a lateral nozzle; the lateral nozzles are horizontally inclined to one side.
The external movable jet flow reinforced suction caisson foundation is characterized in that the movable jet flow nozzle is connected with a mud jacking pipe through a mud jacking sub-pipeline; the outer side of the movable jet nozzle is provided with a nozzle protection cylinder, the nozzle protection cylinder is provided with an arc-shaped through hole at the lateral nozzle part of the movable jet nozzle, and the upper end and the lower end of the movable jet nozzle are mutually connected with the inner side wall of the nozzle protection cylinder through a bearing.
The reinforcing method of the external mobile jet flow suction type caisson foundation reinforcing device comprises the following steps:
step one, driving a barge above a suction pile, and arranging a plurality of guide pipes on the side wall of the suction pile;
secondly, arranging movable jet flow nozzles according to the number of the guide pipes, and connecting the movable jet flow nozzles to the grouting pipes through grouting sub pipelines;
thirdly, lowering each movable jet nozzle to the bottom end of the side wall of the suction pile along the guide pipe through the lifting device;
grouting the movable jet flow nozzle through the grouting device, discharging the grout from the movable jet flow nozzle into the guide pipe, and simultaneously lifting the movable jet flow nozzle upwards through the lifting device;
and step five, when the movable jet flow nozzle moves to the top of the guide pipe, reinforcing the suction pile.
The invention relates to a reinforcing method of an external mobile jet flow suction type caisson foundation reinforcing device.
The invention relates to a reinforcing method of an external mobile jet flow suction type caisson foundation reinforcing device.
Advantageous effects
The invention provides an external mobile jet flow suction type caisson foundation reinforcing device. The side wall is provided with a movable jet pipeline, the grouting pipeline is rotationally lifted through the positioning device and the lifting device, so that the high-speed slurry continuously cuts the soft clay, and the soft clay is stirred to form a cement soil reinforcing body around the suction type caisson foundation, so that the horizontal and vertical bearing capacity of the suction type caisson foundation is improved.
According to the reinforcing method of the external mobile jet flow suction type caisson foundation reinforcing device, the nozzle is reinforced in a motion mode from bottom to top, and the lateral nozzles of the mobile jet flow nozzle are inclined at the same side, so that the mobile jet flow nozzle in the nozzle protecting cylinder can rotate automatically, and the side wall of the suction pile is cut.
According to the reinforcing method of the external mobile jet flow suction type caisson foundation reinforcing device, the cement is stirred for the first time through the mud jacking device and is conveyed to the mobile jet flow nozzle through the mud jacking pipe, and the cement is sprayed out through the mobile jet flow nozzle in a self-rotating mode to form secondary stirring in the nozzle protection cylinder, so that the reinforcing effect is further improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the inner cross-section of the guide tube of the present invention;
FIG. 3 is a schematic view of a fluidic device of the present invention;
FIG. 4a is a schematic illustration of the isocore structure of the present invention after it has been consolidated by a caisson foundation;
fig. 4b is a schematic view of the short core structure of the present invention after being reinforced by a caisson foundation.
FIG. 1-servomotor; 2-a grouting device; 3-moving the jet nozzle; 4, a guide pipe; 5-a suction caisson foundation; 6-a pulling device; 8-barge; 9-a grouting pipe; 10-grouting a slurry pipeline; 11-rolling bearings; 12-a lateral nozzle; 13-nozzle protection cylinder; 2-1-closed stirring barrel; 2-2-pulp press.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
As shown in fig. 1: the external movable jet flow reinforced suction type caisson foundation comprises a suction type caisson foundation 5, a movable jet flow pipeline 10, a jet flow nozzle 12, a closed cement slurry stirring barrel 2-1, a grouting machine 2-2, a lifting device 6 and a positioning device 7. The lower extreme opening of suction caisson foundation, the upper end of suction caisson foundation sets up the closing cap, and suction caisson foundation lateral wall distributes and arranges removal fluidic pipeline 10, removes fluidic pipeline 10 top and is connected with lifting device 7, and the pipeline bottom is equipped with removal fluidic nozzle 3 simultaneously, and the side is opened has N side direction nozzle 12 on the removal fluidic nozzle 3, makes the thick liquid spout along shower nozzle tangential direction.
The lower end of the suction type caisson foundation is opened, the upper end of the suction type caisson foundation is provided with a sealing cover, the side wall of the suction type caisson foundation is distributed and arranged with guide pipes 4, and the guide pipes are sent to a calibration position through negative pressure sinking.
The side wall of the suction type caisson foundation 5 is provided with a guide pipe 4 from bottom to top, the guide pipe 4 is fixed on the side wall of the suction type caisson foundation 5, the guide pipe 4 is in an open shape from top to bottom, in order to prevent the guide pipe from forming a soil plug in the sinking process, the bottom of the guide pipe adopts a sealing form, and the guide pipe is in a cone shape. A moving jet channel 10 is provided within the guide tube.
The mud jacking pipeline bottom is equipped with and removes jet nozzle 3, and it is the sleeve to remove jet nozzle 3 outside, and inside the center tube relied on antifriction bearing 11 to be fixed in the sleeve, and the nozzle protects about 13 and is two antifriction bearing 11, also can play the effect of rotation axis when carrying liquid. Therefore, the nozzle can rotate and move up and down, and the N lateral nozzles 12 are arranged outside the nozzle, so that the slurry is sprayed along the tangential direction of the spray head.
The top of the fluidic conduit 10 is connected to the tensile cord of the positioning device 7. The positioning device consists of a braking mechanism, a fixed pulley and a tension rope, wherein the braking mechanism is an electromagnetic brake, when a rotating shaft of the fixed pulley is loosened, the fixed pulley freely rotates, so that the position of a jet flow pipeline dragged by the tension rope can be moved and adjusted, and when the rotating shaft of the fixed pulley is fixed by the braking mechanism, the fixed pulley is prevented from rotating, so that the hovering positioning of the jet flow pipeline dragged by the tension rope is realized.
One end of a tension rope is connected with the positioning device, the other end of the tension rope penetrates through a movable pulley frame of the lifting device 6 to be connected with the servo motor 1, and lifting is carried out through the servo motor on the ship, so that moving, rotating and shooting reinforcement are achieved.
The external mobile jet flow reinforced suction type caisson foundation is characterized in that one end of a main pipeline is connected with a press machine 2-2, a grouting machine 2-2 is connected with a cement slurry stirring barrel 2-1, and the grouting machine provides pressure for cement slurry.
The distributed mobile jet reinforced suction caisson foundation of claim 1, wherein fig. 2 is a reinforced suction caisson foundation; the reinforcing steps are as follows:
step one, driving a barge above a suction pile, and arranging a plurality of guide pipes on the side wall of the suction pile;
secondly, arranging movable jet flow nozzles according to the number of the guide pipes, and connecting the movable jet flow nozzles to the grouting pipes through grouting sub pipelines; the suction caisson is based on the structure that a lower port is an opening, a sealing cover is arranged at an upper port, and a plurality of guide pipelines are conveyed to a calibration position through negative pressure sinking;
thirdly, lowering each movable jet nozzle to the bottom end of the side wall of the suction pile along the guide pipe through the lifting device;
grouting the movable jet flow nozzle through the grouting device, discharging the grout from the movable jet flow nozzle into the guide pipe, and simultaneously lifting the movable jet flow nozzle upwards through the lifting device; when the movable jet flow nozzle discharges slurry into the guide pipe, the movable jet flow nozzle is driven to rotate by reaction force due to the inclined structure of the lateral nozzle, cement can be temporarily retained in the nozzle protecting cylinder due to the arc-shaped through hole on the nozzle protecting cylinder, the retained cement can be stirred again by the movable jet flow nozzle, and the cement is sprayed out from the bottom of the nozzle protecting cylinder into the guide pipe along with the increase of pressure;
and step five, gradually moving the jet flow nozzle to the top of the guide pipe along with the movement of the jet flow nozzle to gradually complete the reinforcement of the suction pile.
While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides an external removal efflux suction formula caisson foundation strengthening device which characterized in that: the reinforcing device comprises a servo motor, a grouting device, a grouting pipe, a guide pipe, a movable jet nozzle, a lifting device and a barge;
a servo motor, a mud jacking device and a lifting device are assembled on the barge; the guide pipe is positioned in the suction type caisson foundation; the grouting device is communicated with the movable jet nozzle through a grouting pipe; the lifting device is used for lifting the mud jacking pipe, and the movable jet nozzle is positioned in the guide pipe.
2. The external mobile jet suction type caisson foundation reinforcing device as claimed in claim 1, wherein: the lifting device comprises a movable pulley frame provided with a plurality of movable pulleys and a tension rope; the movable pulley frame is arranged on the barge, one end of a tension rope is connected with a servo motor, and the tension rope passes through the movable pulley and the other end of the tension rope moves to connect with the jet nozzle.
3. The external mobile jet suction type caisson foundation reinforcing device as claimed in claim 1, wherein: the grouting device comprises a closed cement slurry stirring barrel and a grouting machine; the feed end of the grouting machine is communicated with the closed cement slurry stirring barrel, and the discharge end of the grouting machine is communicated with the total grouting pipe.
4. The external mobile jet reinforced suction caisson foundation as claimed in claim 1, wherein: the suction caisson foundation is internally distributed and arranged with a plurality of guide pipes, the guide pipes are internally provided with movable jet flow nozzles, and each movable jet flow nozzle is communicated with the mud jacking device through a movable jet flow pipeline.
5. The external mobile jet reinforced suction caisson foundation as claimed in claim 1, wherein: the movable jet flow nozzle is provided with N slurry outlet holes, and the nozzle part of the movable jet flow nozzle is a lateral nozzle; the lateral nozzles are horizontally inclined to one side.
6. The external mobile jet reinforced suction caisson foundation as claimed in claim 1 or 5, wherein: the movable jet nozzle is connected with the grouting pipe through a grouting sub pipeline; the outer side of the movable jet nozzle is provided with a nozzle protection cylinder, the nozzle protection cylinder is provided with an arc-shaped through hole at the lateral nozzle position of the movable jet nozzle, and the upper end and the lower end of the movable jet nozzle are mutually connected with the inner side wall of the nozzle protection cylinder through a bearing.
7. The reinforcing method of the external mobile jet suction type caisson foundation reinforcing device is characterized in that: the method for reinforcing the suction type caisson foundation comprises the following steps:
step one, driving a barge above a suction pile, and arranging a plurality of guide pipes on the side wall of the suction pile;
secondly, arranging movable jet flow nozzles according to the number of the guide pipes, and connecting the movable jet flow nozzles to the grouting pipes through grouting sub pipelines;
thirdly, lowering each movable jet nozzle to the bottom end of the side wall of the suction pile along the guide pipe through the lifting device;
grouting the movable jet flow nozzle through the grouting device, discharging the grout from the movable jet flow nozzle into the guide pipe, and simultaneously lifting the movable jet flow nozzle upwards through the lifting device;
and step five, when the movable jet flow nozzle moves to the top of the guide pipe, reinforcing the suction pile.
8. The reinforcing method of the external mobile jet suction type caisson foundation reinforcing device according to claim 7, wherein the reinforcing method comprises the following steps: and in the fourth step, when the jet flow nozzle is moved to discharge the slurry into the guide pipe, the jet flow nozzle is moved to axially rotate to spray the slurry outwards.
9. The reinforcing method of the external mobile jet suction type caisson foundation reinforcing device according to claim 7, wherein the reinforcing method comprises the following steps: the suction caisson is based on the structure that the lower port is an opening, the upper port is provided with a sealing cover, and a plurality of guide pipelines are conveyed to a calibration position through negative pressure sinking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211259358.7A CN115434311A (en) | 2022-10-14 | 2022-10-14 | External mobile jet flow suction type caisson foundation reinforcing device and reinforcing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211259358.7A CN115434311A (en) | 2022-10-14 | 2022-10-14 | External mobile jet flow suction type caisson foundation reinforcing device and reinforcing method |
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| CN115434311A true CN115434311A (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211259358.7A Pending CN115434311A (en) | 2022-10-14 | 2022-10-14 | External mobile jet flow suction type caisson foundation reinforcing device and reinforcing method |
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| CN (1) | CN115434311A (en) |
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| CN109024643A (en) * | 2018-08-09 | 2018-12-18 | 中国地质大学（北京） | A kind of water-stop curtain constructing device, equipment and waterproof curtain construction method |
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| CN110656650A (en) * | 2019-07-31 | 2020-01-07 | 盾构及掘进技术国家重点实验室 | Self-rotating multiple-mixing double-liquid grouting orifice mixing device |
| CN113718820A (en) * | 2021-08-20 | 2021-11-30 | 都城伟业集团有限公司 | Offshore wind power steel pipe pile combined reinforcing device and reinforcing method |
| CN113718757A (en) * | 2021-08-28 | 2021-11-30 | 中铁时代建筑设计院有限公司 | Bottom expanding device and method based on cast-in-place large-diameter tubular pile |
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2022
- 2022-10-14 CN CN202211259358.7A patent/CN115434311A/en active Pending
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| CN202108436U (en) * | 2011-01-14 | 2012-01-11 | 西南石油大学 | Hydraulic auto-rotation jet head for washing well |
| CN202970575U (en) * | 2012-10-16 | 2013-06-05 | 中国石油天然气股份有限公司 | Blockage removing device adopting high-pressure jetting and negative-pressure pumping |
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Application publication date: 20221206 |
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