CN114164834A - Ultrahigh-pressure jet grouting pile machine and jet grouting pile construction method - Google Patents
Ultrahigh-pressure jet grouting pile machine and jet grouting pile construction method Download PDFInfo
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- CN114164834A CN114164834A CN202111504874.7A CN202111504874A CN114164834A CN 114164834 A CN114164834 A CN 114164834A CN 202111504874 A CN202111504874 A CN 202111504874A CN 114164834 A CN114164834 A CN 114164834A
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 239000002002 slurry Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000005507 spraying Methods 0.000 claims description 16
- 239000004568 cement Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 238000007569 slipcasting Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 16
- 238000004064 recycling Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000011440 grout Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 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
- 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
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- 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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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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 provides an ultrahigh pressure jet grouting pile machine and a jet grouting pile construction method, which solve the problems that the existing ultrahigh pressure jet grouting pile machine is slow in downward moving grouting and upward moving recovery speed of a grouting pipe; after grouting, the surface of the grouting pipe is adhered with slurry, and the grouting pipe needs to be cleaned in time. An ultrahigh pressure rotary jet pile machine comprises a self-walking mechanism, a vehicle body, a rotating mechanism, a lifting mechanism and a grouting pipe; the vehicle body is arranged on the self-walking mechanism; the rotating mechanism is arranged at one end of the vehicle body and comprises a rotating seat, and the rotating seat can rotate relative to the vehicle body; the lifting mechanism comprises a lifting seat, a sliding seat, a first lifting unit and a second lifting unit, the first lifting unit drives the lifting seat to rotate relatively, the second lifting unit is used for driving the sliding seat to move relatively, and the grouting pipe is installed on the sliding seat.
Description
Technical Field
The invention relates to an ultrahigh-pressure jet grouting pile machine and a jet grouting pile construction method, and belongs to the technical field of jet grouting pile construction.
Background
The high-pressure jet technology for reinforcing soil features that a jet grouting pipe is arranged at a predefined depth for reinforcing foundation by rotary jet drilling machine, and when the drill rod is slowly rotated, the prepared grout is sprayed out from nozzle under a certain pressure to impact soil body, and the grout is mixed to become mixture, which is then coagulated and solidified to form a composite foundation with a certain strength.
In the actual construction process of the existing ultrahigh-pressure rotary jet pile machine, the lifting of a grouting pipe is realized through the working of a winch, the moving speed of the grouting pipe is slow, and the downward moving, grouting and upward moving and recycling speeds of the grouting pipe are further influenced; meanwhile, after grouting is completed, slurry can adhere to the surface of the grouting pipe, and the grouting pipe needs to be cleaned in time, otherwise subsequent reuse is affected.
Disclosure of Invention
The invention aims to provide an ultrahigh pressure rotary jet grouting pile machine and a rotary jet grouting pile construction method, and solves the problems that the lifting of a grouting pipe is realized by the operation of a winch in the actual construction process of the conventional ultrahigh pressure rotary jet grouting pile machine, the moving speed of the grouting pipe is slow, and the downward moving, grouting and upward moving and recycling speeds of the grouting pipe are influenced; and after grouting is completed, slurry can adhere to the surface of the grouting pipe, and the grouting pipe needs to be cleaned in time, otherwise, the subsequent reuse is influenced.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an ultrahigh pressure rotary jet pile machine comprises a self-walking mechanism, a vehicle body, a rotating mechanism, a lifting mechanism and a grouting pipe;
the vehicle body is arranged on the self-walking mechanism;
the rotating mechanism is arranged at one end of the vehicle body and comprises a rotating seat, and the rotating seat can rotate relative to the vehicle body;
the lifting mechanism comprises a lifting seat, a sliding seat, a first lifting unit and a second lifting unit, the first lifting unit drives the lifting seat to rotate relatively, the second lifting unit is used for driving the sliding seat to move relatively, and the grouting pipe is installed on the sliding seat.
According to the preferable scheme of the ultrahigh-pressure rotary jet pile machine, the first lifting unit comprises a lifting motor, a first lifting guide rail pair, a gear and a rack, the first lifting guide rail pair is formed between a lifting seat and a rotating seat, the lifting seat is provided with a rotating shaft, the rotating shaft is provided with the gear and a chain wheel, the gear is arranged at the output end of the lifting motor, and the gear is meshed with the rack;
the second lifting unit comprises a second lifting guide rail pair, a chain belt and two chain wheels, the second lifting guide rail pair is formed between the sliding seat and the lifting seat, and the chain wheels are matched with the chain belt and the chain belt is installed on the rotating seat.
The preferred scheme of the ultrahigh-pressure rotary jet pile machine is that the rotating mechanism comprises a rotating motor, a rotating seat and a rotating block, the shaft seat is installed on the vehicle body, the rotating motor is installed on the shaft seat, the rotating block is installed on the rotating seat through an installation shaft, and the installation shaft is installed at the output end of the rotating motor.
The ultrahigh pressure rotary jet pile machine preferably further comprises a cleaning mechanism, the cleaning mechanism comprises a water tank, a liquid pump, a shell and a plurality of spray heads, the water tank is mounted on the vehicle body, the spray heads are mounted on the shell, the shell is sleeved at the lower end of the grouting pipe, one end of the liquid pump is communicated with the water tank, and the other end of the liquid pump is communicated with the spray heads.
According to the preferred scheme of the ultrahigh-pressure rotary jet pile machine, the shell comprises a barrel body and a baffle ring, the baffle ring is installed at two ends of the barrel body, the grouting pipe penetrates through the barrel body and the baffle ring, and the barrel body is provided with a drainage groove in a conduction mode towards the side of the rotating base.
A jet grouting pile construction method of an ultrahigh pressure jet grouting pile machine comprises the following steps:
1) excavation of a foundation pit: completing three-way leveling in a field before starting, excavating foundation pit earthwork in a reinforcing range to the elevation of the bottom surface of an independent foundation according to the design requirement of the composite foundation, and reserving a construction pavement entering a raft foundation pit;
2) pile position measuring and placing: using a total station to discharge the position of each rotary spraying pile according to the ground treatment plane layout drawing and the axis of the rotary spraying pile;
3) forming holes: the hole forming depth is further determined according to the scheme and in combination with the field geological conditions, and the hole forming depth meets the design requirements;
4) and (3) a lower rotary spray pipe, namely inserting the grouting pipe into the drill hole to a preset depth for rotary spraying operation, wherein the grouting adopts P.C42.5 cement, and the water cement ratio of the cement paste is 1: 1.1-1.3, before the guniting operation, completing the detection of the rotary guniting machine, simultaneously observing various indexes in the construction process, after the spraying operation is completed, pulling out the grouting pipe, immediately cleaning the grouting pump and the grouting pipe by using clear water after the grouting pipe is pulled out, and during continuous grouting, cleaning after the last rotary guniting operation is completed;
5) and after the grouting body is initially set and sinks, immediately recharging by adopting cement slurry, wherein the recharging height is higher than the designed elevation, leveling the ground after the construction of the building foundation by rotary spraying, carrying out surface treatment, paving a layer of 20-40 mm-thick crushed stone on the surface, and rolling to compact, wherein the ratio of the thickness of the compacted mattress to the virtual paving thickness is 0.8-0.9.
The invention has the advantages that:
1. the lifting motor works to drive the gear to rotate, the gear is matched with the meshed rack to realize the lifting of the lifting seat on the rotating seat, meanwhile, the chain belt is connected with the rotating seat, when the lifting seat moves, the chain belt rotates on the chain wheel to further drive the sliding seat to move on the lifting seat, and at the moment, the sliding seat drives the grouting pipe to move at a multiple speed, so that the grouting pipe can move quickly, the grouting and recycling efficiency is improved conveniently, and the practical operation is facilitated;
2. after the construction was accomplished, when the roating seat was retrieved to the horizontality, through the translation of elevator motor work realization slip casting pipe, the slip casting pipe is continuous through the barrel, and the liquid pump work is carried the water in the water tank to the connecting seat this moment, and the blowout is washd slip casting pipe and rotatory seat of spouting from the shower nozzle, and the sewage after the washing is discharged from the water drainage tank through blockking of fender ring, realizes the quick convenient washing to the slip casting pipe.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic view of an overall side structure of the present invention;
FIG. 2 is another schematic view of the overall structure of the present invention;
FIG. 3 is an enlarged view of a portion of the area A of FIG. 1 according to the present invention;
fig. 4 is a cross-sectional view of the cartridge of the present invention.
FIG. 1, a vehicle body; 2. a self-traveling mechanism; 3. a rotating base; 4. a lifting seat; 5. a slide base; 6. mounting a plate; 7. a grouting pipe; 8. a shaft seat; 9. a rotating electric machine; 10. rotating the block; 11. a first slide rail; 12. a second slide rail; 13. a lifting motor; 14. rotating the teeth; 15. a rack; 16. a rotating shaft; 17. a sprocket; 18. a chain belt; 19. a barrel; 20. a baffle ring; 21. a water discharge tank; 22. a connecting seat; 23. a spray head; 24. a water tank; 25. a liquid pump; 26. a connecting valve; 27 rotating the spray base.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an ultrahigh pressure jet grouting pile machine comprises a self-walking mechanism 2, a vehicle body 1, a rotating mechanism, a lifting mechanism and a grouting pipe 7;
the self-walking mechanism 2 is of an existing crawler-type structure;
the rotating mechanism is arranged at one end of the vehicle body 1 and comprises a rotating seat 3, and the rotating seat can rotate relative to the vehicle body;
elevating system, including lift seat 4, slide 5, first lifting unit and second lifting unit, first lifting unit drives lift seat relative rotation seat and reciprocates, and second lifting unit is used for driving and drives the relative lift seat of slide 5 and reciprocate, and slip casting pipe 7 is installed on slide 5.
In this embodiment, the first lifting unit includes a lifting motor 13, a first lifting guide rail pair 11, a gear 14 and a rack 15, the first lifting guide rail pair 11 is formed between the lifting base 4 and the rotating base 3, a rotating shaft 16 is installed on the lifting base 4, the gear 14 and a sprocket 17 are installed on the rotating shaft 16, the gear 14 is installed at the output end of the lifting motor 13, and the gear 14 is meshed with the rack 15;
the second lifting unit comprises a second lifting guide rail pair 12, a chain belt 18 and two chain wheels 17, the second lifting guide rail pair 12 is formed between the sliding seat 5 and the lifting seat 4, the chain wheels 17 are matched with the chain belt 18, and the chain belt 18 is installed on the rotating seat 3.
In this embodiment, the rotating mechanism includes a rotating electrical machine 9, a rotating base 3 and a rotating block 10, a shaft seat 8 is installed on the vehicle body 1, the rotating electrical machine 9 is installed on the shaft seat, the rotating block 10 is installed on the rotating base 3 through an installation shaft, and the installation shaft is installed on the output end of the rotating electrical machine 9.
In the embodiment, the cleaning mechanism comprises a water tank 24, a liquid pump 25, a shell and a plurality of spray heads 23, wherein the water tank 24 is installed on the vehicle body 1, the spray heads 23 are installed on the shell, the shell is sleeved at the lower end of the grouting pipe 7, one end of the liquid pump 25 is communicated with the water tank 24, and the other end of the liquid pump is communicated with the spray heads 23. The liquid pump 25 works to convey water in the water tank 24 to the connecting seat 22, the water is sprayed out from the spray head 23 to clean the grouting pipe 7 and the rotary spray seat 27, and the cleaned sewage is discharged from the drainage groove 21 through the blocking of the baffle ring 20, so that the grouting pipe 7 is cleaned.
In this embodiment, the casing includes a cylinder 19 and a baffle ring 20, the baffle ring 20 is installed at two ends of the cylinder 19, the grouting pipe 7 penetrates through the cylinder 19 and the baffle ring 20, and a drainage groove 21 is installed on the cylinder 19 and leads to the side of the rotary base 3.
In this embodiment, the top end of the grouting pipe 7 is provided with a connecting valve 26, the connecting valve 26 is in conduction connection with the grouting pump, and the bottom end of the grouting pipe is provided with a rotary spray seat 27.
A jet grouting pile construction method of an ultrahigh pressure jet grouting pile machine comprises the following steps:
1) excavation of a foundation pit: completing three-way leveling in a field before starting, excavating foundation pit earthwork in a reinforcing range to the elevation of the bottom surface of an independent foundation according to the design requirement of the composite foundation, and reserving a construction pavement entering a raft foundation pit;
2) pile position measuring and placing: using a total station to discharge the position of each rotary spraying pile according to the ground treatment plane layout drawing and the axis of the rotary spraying pile;
3) forming holes: the hole forming depth is further determined according to the scheme and in combination with the field geological conditions, and the hole forming depth meets the design requirements;
4) and (3) inserting the grouting pipe 7 into the drill hole at a preset depth to perform rotary spraying operation through a downward rotary spraying pipe, wherein the grouting adopts P.C42.5 cement, and the water cement ratio of the cement paste is 1: 1.1-1.3, before the guniting operation, completing the detection of the rotary guniting machine, simultaneously observing various indexes in the construction process, after the guniting operation is completed, pulling out the grouting pipe 7, immediately cleaning the grouting pump and the grouting pipe 7 by using clear water after the grouting pipe 7 is pulled out, and during continuous grouting, cleaning after the last rotary guniting is completed;
5) and after the grouting body is initially set and sinks, immediately recharging by adopting cement slurry, wherein the recharging height is higher than the designed elevation, leveling the ground after the construction of the building foundation by rotary spraying, carrying out surface treatment, paving a layer of 20-40 mm-thick crushed stone on the surface, and rolling to compact, wherein the ratio of the thickness of the compacted mattress to the virtual paving thickness is 0.8-0.9.
Working principle of the ultrahigh pressure jet grouting pile machine; when the vehicle body 1 moves to a working place through the self-walking mechanism 2, the first motor 9 on the shaft seat 8 works to drive the rotating block 10 to rotate, so that synchronous rotation of the rotating seat 3 is realized, the angle of the grouting pipe 7 is adjusted, after adjustment is completed, the lifting motor works to drive the rotating teeth 14 to rotate, the rotating teeth are matched with the meshed racks 15 to realize downward movement of the lifting seat 4 on the rotating seat 3, meanwhile, the chain belt 18 is connected with the rotating seat 3, when the lifting seat 4 moves, the chain belt 18 rotates on the chain wheel 17 to further drive the sliding seat 5 to move up and down on the lifting seat 4, the sliding seat 5 drives the grouting pipe 7 to move down at double speed, when the grouting pipe 7 moves, the grouting pump 7 works to continuously spray and pour through the grouting pipe 7 and the rotating spray seat 27, after construction, the lifting motor works to realize recovery, when the rotating seat 3 is recovered to a horizontal state, the grouting pipe 7 moves through the lifting motor works, the grouting pipe 7 continuously passes through the cylinder 19, at the moment, the liquid pump 25 works to convey water in the water tank 24 to the connecting seat 22, the water is sprayed out from the spray head 23 to clean the grouting pipe 7 and the rotary spray seat 27, and the cleaned sewage is discharged from the drainage tank 21.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an ultrahigh pressure spouts stake machine soon which characterized in that: comprises a self-walking mechanism (2), a vehicle body (1), a rotating mechanism, a lifting mechanism and a grouting pipe (7);
the vehicle body (1) is arranged on the self-walking mechanism (2);
the rotating mechanism is arranged at one end of the vehicle body (1) and comprises a rotating seat (3), and the rotating seat can rotate relative to the vehicle body;
the lifting mechanism comprises a lifting seat (4), a sliding seat (5), a first lifting unit and a second lifting unit, wherein the first lifting unit drives the lifting seat to move up and down relative to the rotating seat, the second lifting unit is used for driving the sliding seat (5) to move up and down relative to the lifting seat, and a grouting pipe (7) is installed on the sliding seat (5).
2. The ultrahigh-pressure jet grouting pile machine according to claim 1, characterized in that: the first lifting unit comprises a lifting motor (13), a first lifting guide rail pair (11), a gear (14) and a rack (15), the first lifting guide rail pair (11) is formed between the lifting seat (4) and the rotating seat (3), a rotating shaft (16) is installed on the lifting seat (4), the gear (14) and a chain wheel (17) are installed on the rotating shaft (16), the gear (14) is installed at the output end of the lifting motor (13), and the gear (14) is meshed with the rack (15);
the second lifting unit comprises a second lifting guide rail pair (12), a chain belt (18) and two chain wheels (17), the second lifting guide rail pair (12) is formed between the sliding seat (5) and the lifting seat (4), the chain wheels (17) are matched with the chain belt (18), and the chain belt (18) is installed on the rotating seat (3).
3. The ultrahigh-pressure jet grouting pile machine according to claim 1, characterized in that: the rotating mechanism comprises a rotating motor (9), a rotating seat (3) and a rotating block (10), a shaft seat (8) is installed on the vehicle body (1), the rotating motor (9) is installed on the shaft seat, the rotating block (10) is installed on the rotating seat (3) through an installation shaft, and the installation shaft is installed at the output end of the rotating motor (9).
4. The ultrahigh-pressure jet grouting pile machine according to claim 1, characterized in that: it still includes wiper mechanism, and wiper mechanism includes water tank (24), liquid pump (25), casing and a plurality of shower nozzle (23), and install on automobile body (1) water tank (24), and shower nozzle (23) are installed on the casing, and the casing suit is at slip casting pipe (7) lower extreme, and liquid pump (25) one end and water tank (24) intercommunication, other end intercommunication shower nozzle (23).
5. The ultrahigh-pressure rotary jet pile machine according to claim 4, characterized in that: the casing includes barrel (19) and fender ring (20), and fender ring (20) are installed at barrel (19) both ends, and slip casting pipe (7) run through barrel (19) and fender ring (20), and upward the side guide of roating seat (3) is led through installation water drainage tank (21) on barrel (19).
6. A jet grouting pile construction method of an ultrahigh pressure jet grouting pile machine is characterized by comprising the following steps:
1) excavation of a foundation pit: completing three-way leveling in a field before starting, excavating foundation pit earthwork in a reinforcing range to the elevation of the bottom surface of an independent foundation according to the design requirement of the composite foundation, and reserving a construction pavement entering a raft foundation pit;
2) pile position measuring and placing: using a total station to discharge the position of each rotary spraying pile according to the ground treatment plane layout drawing and the axis of the rotary spraying pile;
3) forming holes: the hole forming depth is further determined according to the scheme and in combination with the field geological conditions, and the hole forming depth meets the design requirements;
4) and (3) inserting a grouting pipe (7) into the drill hole at a preset depth to perform rotary spraying operation through a lower rotary spraying pipe, wherein the grouting adopts P.C42.5 cement, and the water cement ratio of cement paste is 1: 1.1-1.3, before the guniting operation, completing the detection of the rotary guniting machine, simultaneously observing various indexes in the construction process, after the spraying operation is completed, pulling out the grouting pipe (7), immediately cleaning the grouting pump and the grouting pipe (7) by using clear water after the grouting pipe (7) is pulled out, and during continuous grouting, cleaning after the last rotary guniting operation is completed;
5) and after the grouting body is initially set and sinks, immediately recharging by adopting cement slurry, wherein the recharging height is higher than the designed elevation, leveling the ground after the construction of the building foundation by rotary spraying, carrying out surface treatment, paving a layer of 20-40 mm-thick crushed stone on the surface, and rolling to compact, wherein the ratio of the thickness of the compacted mattress to the virtual paving thickness is 0.8-0.9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111504874.7A CN114164834A (en) | 2021-12-10 | 2021-12-10 | Ultrahigh-pressure jet grouting pile machine and jet grouting pile construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111504874.7A CN114164834A (en) | 2021-12-10 | 2021-12-10 | Ultrahigh-pressure jet grouting pile machine and jet grouting pile construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117514197A (en) * | 2023-12-11 | 2024-02-06 | 济南中优城市发展投资集团有限公司 | Reinforcement device for jet grouting and reinforcement method thereof |
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| CN112726569A (en) * | 2021-01-30 | 2021-04-30 | 北京滕宇翔建设工程有限公司 | High-pressure jet grouting device for foundation reinforcement and construction method |
| CN113089655A (en) * | 2021-04-08 | 2021-07-09 | 启东建筑集团有限公司 | Construction method in three-pipe rotary spraying pile pit in flowing water environment |
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| CN117514197A (en) * | 2023-12-11 | 2024-02-06 | 济南中优城市发展投资集团有限公司 | Reinforcement device for jet grouting and reinforcement method thereof |
| CN117514197B (en) * | 2023-12-11 | 2024-04-02 | 济南中优城市发展投资集团有限公司 | Reinforcement device for jet grouting and reinforcement method thereof |
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