CN114370049A - Construction equipment and construction method of high-pressure jet grouting pile - Google Patents
Construction equipment and construction method of high-pressure jet grouting pile Download PDFInfo
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- CN114370049A CN114370049A CN202210061450.6A CN202210061450A CN114370049A CN 114370049 A CN114370049 A CN 114370049A CN 202210061450 A CN202210061450 A CN 202210061450A CN 114370049 A CN114370049 A CN 114370049A
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- rotary
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- sliding block
- vehicle body
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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
- E02D5/34—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
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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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- 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)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses construction equipment and a construction method of a high-pressure jet grouting pile, which comprises a vehicle body and travelling wheels arranged at the lower end of the vehicle body, wherein a positioning piece for auxiliary positioning is arranged outside the vehicle body, a rotary column is arranged on the right side of the vehicle body, a drill bit assembly for drilling holes in the ground is arranged at the lower end of the rotary column, a rotary sleeve is connected at the upper end of the rotary column, the rotary sleeve is rotatably arranged on a horizontal table, the horizontal table is connected with a lifting pushing piece for driving the horizontal table to move up and down, the rotary sleeve is connected with a rotary driving piece for driving the rotary sleeve to rotate, a buffer box is rotatably arranged at the upper end of the rotary sleeve, one side of the buffer box is fixedly connected with the horizontal table through a connecting frame, the application is designed aiming at the defects of the prior device, the drilling radius can be adjusted according to needs, and drilling holes with different shapes can be drilled in practical use, thereby the adaptation scope of effectual improvement drilling, the practicality is strong.
Description
Technical Field
The invention relates to the technical field of building equipment, in particular to construction equipment and a construction method of a high-pressure jet grouting pile.
Background
The high-pressure rotary jet pile is characterized by that it utilizes high-pressure rotating nozzle to spray cement slurry into soil layer and mix it with soil body to form continuous lapped cement reinforced body. The construction occupies less land, has small vibration and lower noise, but is easy to pollute the environment, has higher cost, and is not suitable for special soil which can not solidify the sprayed slurry.
When the existing rotary spraying device is actually used, only holes with fixed diameters can be drilled, so that the application range is small, and a drill bit needs to be continuously replaced.
Disclosure of Invention
The invention aims to provide construction equipment and a construction method of a high-pressure jet grouting pile, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction device of a high-pressure jet grouting pile comprises a vehicle body and walking wheels arranged at the lower end of the vehicle body, wherein a positioning piece for auxiliary positioning is arranged on the outer side of the vehicle body, a rotary column is arranged on the right side of the vehicle body, a drill bit assembly for drilling the ground is arranged at the lower end of the rotary column, a rotary sleeve is connected at the upper end of the rotary column and is rotatably arranged on a horizontal table, the horizontal table is connected with a lifting pushing piece for driving the horizontal table to move up and down, the rotary sleeve is connected with a rotary driving piece for driving the rotary sleeve to rotate, a buffer tank is rotatably arranged at the upper end of the rotary sleeve, one side of the buffer tank is fixedly connected with the horizontal table through a connecting frame, the feeding end of the buffer tank is connected with the buffer tank through a guide hose, the feeding end of the buffer tank is connected with a cement pump, the cement pump is connected with a cement storage tank for storing cement, and the other feeding end of the buffer tank is connected with a high-pressure water pump, and the water inlet end of the high-pressure water pump is connected with a water spraying storage tank for storing water.
As a further scheme of the invention: the drill bit component comprises a tip end arranged at the lower end of a rotating column, a sliding block is arranged at the bottom in the rotating column in a sliding fit manner, a groove is arranged at the upper end of the sliding block, side blocks are symmetrically arranged at two sides below the sliding block, each side block is fixedly connected with the sliding block through a second spring, a groove is arranged at the upper end of the sliding block, extension ports are symmetrically arranged at two sides of the lower end of the sliding block, a water spray pipe is arranged at each extension port in a sliding fit manner, water spray holes for outwards spraying high-pressure water columns are distributed on the outer surface of the water spray pipe, a reset sliding block is arranged at the inner end of the water spray pipe, the outer side of the reset sliding block is fixedly connected with the inner wall of the rotating column through a first spring, two buffer cavities slide relatively under the action of the first spring, so that the water spray pipe is collected into the rotating column, and an outlet at the lower end of the groove is communicated with a buffer cavity in the reset sliding block through a communication hose, the spray pipe is communicated with the cache cavity, and the lower end of the sliding block is provided with a separating piece used for separating the two reset sliding blocks.
As a further scheme of the invention: the position of the extending opening is provided with a sealing ring matched with the water spraying pipe.
As a further scheme of the invention: the separating piece comprises a connecting block arranged at the lower end of the sliding block, a pressing inclined block is arranged at the lower end of the connecting block, and the pressing inclined block is a conical block with a lower end and a wide upper end.
As a further scheme of the invention: the corners of the upper ends of the two reset sliding blocks, which are close to each other, are provided with chamfers, and the V-shaped grooves are formed by the two chamfers.
As a further scheme of the invention: two column spinner inner walls are equipped with the distance sensor who is used for detecting the slider separation degree that resets, detect the sliding position of slider that resets through distance sensor.
As a further scheme of the invention: the rotary driving part comprises a driving motor arranged on the horizontal table, the output end of the driving motor is provided with a driving gear, a driven gear ring is coaxially arranged on the rotary sleeve, and the driven gear ring is meshed with the driving gear.
As a further scheme of the invention: the lifting pushing piece comprises an installation barrel arranged at the upper end of the vehicle body, a lifting block is arranged in the installation barrel in a sliding fit mode, the lifting block is in threaded fit on a lifting screw rod, the upper end of the lifting screw rod is rotatably connected with the inner top of the installation barrel, the lower end of the lifting screw rod is connected with a lifting motor used for driving the lifting screw rod to rotate, a connecting end connected with a horizontal table is arranged on the right side of the lifting block, and the left end face of the horizontal table is arranged on the surface of the installation barrel in a sliding mode.
As a further scheme of the invention: the positioning piece comprises positioning side plates distributed outside the vehicle body in an array mode, each positioning side plate is provided with a positioning telescopic rod, and the output end of each positioning telescopic rod is provided with a supporting plate used for supporting the ground.
Compared with the prior art, the invention has the beneficial effects that: this application designs to the drawback of current device, can adjust the drilling radius as required, can also drill the drilling of going out different shapes when in-service use to the accommodation of effectual improvement drilling, the practicality is strong.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the internal structure of the present invention.
Figure 3 is a schematic diagram of the construction of the drill bit assembly of the present invention.
Wherein: the device comprises a vehicle body 11, a positioning telescopic rod 12, a positioning side plate 13, a support plate 14, a traveling wheel 15, a drill bit assembly 16, a rotary column 17, a driving motor 18, a rotary sleeve 19, a driven gear ring 20, a buffer storage box 21, a driving gear 22, a connecting frame 23, a lifting screw 24, a lifting block 25, an installation barrel 26, a material guide hose 27, a cement storage box 28, a high-pressure water pump 29, a water spray storage box 30, a sliding block 31, a communication hose 32, a first spring 33, a pressing inclined block 34, a tip head 35, a reset sliding block 39, a buffer storage cavity 36, a water spray hole 37, a water spray pipe 38, a side block 40, a second spring 41 and a groove 42.
Detailed Description
Example 1
Referring to fig. 1-3, in an embodiment of the present invention, a construction apparatus for a high-pressure jet grouting pile includes a vehicle body 11 and a traveling wheel 15 disposed at a lower end of the vehicle body 11, a positioning member for assisting positioning is disposed at an outer side of the vehicle body 11, a rotary column 17 is disposed at a right side of the vehicle body 11, a drill bit assembly 16 for drilling a hole in the ground is disposed at a lower end of the rotary column 17, a rotary sleeve 19 is connected to an upper end of the rotary column 17, the rotary sleeve 19 is rotatably disposed on a horizontal table, the horizontal table is connected to a lifting pushing member for driving the horizontal table to move up and down, the rotary sleeve 19 is connected to a rotary driving member for driving the rotary sleeve to rotate, a buffer tank 21 is rotatably disposed at an upper end of the rotary sleeve 19, one side of the buffer tank 21 is fixedly connected to the horizontal table through a connecting frame 23, a feeding end of the buffer tank 21 is connected to the buffer tank through a material guiding hose 27, the feeding end of the buffer tank is connected to a cement pump, the cement pump is connected with a cement storage tank 28 for storing cement, the other feeding end of the buffer tank is connected with a high-pressure water pump 29, and the water inlet end of the high-pressure water pump 29 is connected with a water spraying storage tank 30 for storing water;
the drill bit assembly 16 comprises a tip 35 arranged at the lower end of the rotary column 17, a sliding block 31 is arranged at the bottom in the rotary column 17 in a sliding fit manner, a groove 42 is arranged at the upper end of the sliding block 31, side blocks 40 are symmetrically arranged at two sides below the sliding block 31, each side block 40 is fixedly connected with the sliding block 31 through a second spring 41, a groove 42 is arranged at the upper end of the sliding block 31, protrusions are symmetrically arranged at two sides of the lower end of the sliding block 31, a water spraying pipe 38 is arranged at each protrusion in a sliding fit manner, water spraying holes 37 used for outwards spraying high-pressure water columns are distributed on the outer surface of the water spraying pipe 38, a reset sliding block 39 is arranged at the inner end of the water spraying pipe 38, the outer side of the reset sliding block 39 is fixedly connected with the inner wall of the rotary column 17 through a first spring 33, under the action of the first spring 33, the two buffer cavities 36 slide relatively, so that the water spraying pipe 38 is collected into the rotary column 17, the outlet at the lower end of the groove 42 is communicated with the buffer cavity 36 inside the reset sliding block 39 through the communication hose 32, the water spray pipe 38 is communicated with the buffer cavity 36, and the lower end of the sliding block 31 is provided with a separating piece for separating the two reset sliding blocks 39
The separating part comprises a connecting block arranged at the lower end of the sliding block 31, a pressing inclined block 34 is arranged at the lower end of the connecting block, the pressing inclined block 34 is a conical block with a pointed lower end and a wide upper end, so that the pressing inclined block 34 can slide downwards under the pushing of the sliding block 31, two reset sliding blocks 39 are separated, the reset sliding blocks 39 slide outwards to drive the water spray pipe 38 to extend out of the rotary column 17, so that the water pressure can be adjusted according to the needs, the sliding blocks 31 can slide downwards for different distances under different water pressures, and the extending amplitude of the water spray pipe 38 can be adjusted;
the corners of the upper ends of the two reset sliding blocks 39, which are close to each other, are provided with chamfers, and the V-shaped grooves are formed by the two chamfers so that the two reset sliding blocks 39 can be separated by the later-stage pressing inclined blocks 34;
distance sensors for detecting the separation degree of the reset sliding blocks 39 are arranged on the inner walls of the two rotary columns 17, the sliding positions of the reset sliding blocks 39 are detected through the distance sensors, so that the extending lengths of the water spraying pipes 38 are detected, and holes with different radiuses are conveniently machined;
the rotary driving part comprises a driving motor 18 arranged on the horizontal table, a driving gear 22 is arranged at the output end of the driving motor 18, a driven gear ring 20 is coaxially arranged on the rotary sleeve 19, the driven gear ring 20 is meshed with the driving gear 22, the driving gear 22 drives the driven gear ring 20 to rotate under the driving of the driving motor 18, and the driven gear ring 20 drives the rotary sleeve 19 to rotate, so that power is provided for drilling;
the lifting pushing piece comprises a mounting barrel 26 arranged at the upper end of the vehicle body 11, a lifting block 25 is arranged in the mounting barrel 26 in a sliding fit mode, the lifting block 25 is in threaded fit with a lifting screw rod 24, the upper end of the lifting screw rod 24 is rotatably connected with the inner top of the mounting barrel 26, the lower end of the lifting screw rod 24 is connected with a lifting motor for driving the lifting screw rod to rotate, the right side of the lifting block 25 is provided with a connecting end connected with a horizontal table, the left end face of the horizontal table is arranged on the surface of the mounting barrel 26 in a sliding mode, the lifting screw rod 24 and the lifting block 25 rotate relatively under the action of the lifting motor, and the lifting block 25 slides up and down in the mounting barrel 26 under the action of threads, so that power is provided for height adjustment;
the setting element includes the location curb plate 13 of array distribution in the automobile body 11 outside, is equipped with a location telescopic link 12 on every location curb plate 13, the output of location telescopic link 12 is equipped with a backup pad 14 that is used for supporting with ground, when using, drives backup pad 14 downstream through location telescopic link 12 to make backup pad 14 support the pressure contact with ground, improved automobile body 11's stationarity.
The working principle of the invention is as follows: when the drilling tool is actually used, the vehicle body 11 is stopped at a corresponding position, the rotary column 17 is suspended at a position to be drilled, the rotary column 17 is driven to rotate rapidly by the rotary driving part, then the position of the rotary column 17 is lowered slowly, a corresponding hole is formed in the ground by the drill bit assembly 16, when the drilling radius is adjusted, water in the water spray storage tank 30 is sent into the rotary column 17 by the high-pressure water pump 29, then the high-pressure water column is sprayed out from the water spray pipes 38, the water spray pipes 38 extend out by corresponding lengths under the action of water pressure, the distance between two ends of the two water spray pipes 38 is the diameter of a drilled hole, when the actual drilling is carried out, the diameter of the drilled hole can be adjusted temporarily to obtain a tapered drilled hole with a small top and a large bottom, after the drilling is finished, water supply is stopped, cement in the cement storage tank 28 enters the rotary column 17 under the action of the cement pump, and then flows out of the water spray pipes 38, so that the borehole is filled with the corresponding cement.
Claims (10)
1. The construction equipment for the high-pressure jet grouting pile comprises a vehicle body (11) and walking wheels (15) arranged at the lower end of the vehicle body, wherein a positioning piece for auxiliary positioning is arranged on the outer side of the vehicle body (11), a rotary column (17) is arranged on the right side of the vehicle body (11), a drill bit assembly (16) for drilling the ground is arranged at the lower end of the rotary column (17), a rotary sleeve (19) is connected to the upper end of the rotary column (17), and the rotary sleeve (19) is rotatably arranged on a horizontal table;
the cement water spraying device is characterized in that the horizontal table is connected with a lifting pushing piece for driving the horizontal table to move up and down, the rotary sleeve (19) is connected with a rotary driving piece for driving the rotary sleeve to rotate, a buffer tank (21) is rotatably arranged at the upper end of the rotary sleeve (19), one side of the buffer tank (21) is fixedly connected with the horizontal table through a connecting frame (23), the feeding end of the buffer tank (21) is connected with the buffer tank through a material guiding hose (27), the feeding end of the buffer tank is connected with a cement pump, the cement pump is connected with a cement storage tank (28) for storing cement, the other feeding end of the buffer tank is connected with a high-pressure water pump (29), and the water inlet end of the high-pressure water pump (29) is connected with a water spraying storage tank (30) for storing water.
2. The construction equipment of the high-pressure jet grouting pile according to claim 1, wherein the drill bit assembly (16) comprises a pointed end (35) arranged at the lower end of the rotating column (17), a sliding block (31) is slidably matched at the bottom in the rotating column (17), a groove (42) is arranged at the upper end of the sliding block (31), side blocks (40) are symmetrically arranged at two sides below the sliding block (31), each side block (40) is fixedly connected with the sliding block (31) through a second spring (41), a groove (42) is arranged at the upper end of the sliding block (31), protruding openings are symmetrically arranged at two sides at the lower end of the sliding block (31), a water spraying pipe (38) is slidably matched at each protruding opening, water spraying holes (37) used for outwards spraying high-pressure water columns are distributed on the outer surface of the water spraying pipe (38), and a resetting sliding block (39) is arranged at the inner end of the water spraying pipe (38), the outer side of the reset sliding block (39) and the inner wall of the rotary column (17) are fixedly connected through a first spring (33), under the action of the first spring (33), the two buffer cavities (36) slide relatively, so that the water spray pipe (38) is collected into the rotary column (17), an outlet at the lower end of the groove (42) is communicated with the buffer cavity (36) in the reset sliding block (39) through a communicating hose (32), the water spray pipe (38) is communicated with the buffer cavities (36), and a separating piece used for separating the two reset sliding blocks (39) is arranged at the lower end of the sliding block (31).
3. The high-pressure jet grouting pile construction equipment as claimed in claim 2, wherein the projecting port is provided with a sealing ring which is matched with the water spraying pipe (38).
4. The construction equipment for the high-pressure jet grouting pile is characterized in that the separating piece comprises a connecting block arranged at the lower end of the sliding block (31), a pressing inclined block (34) is arranged at the lower end of the connecting block, and the pressing inclined block (34) is a conical block with a pointed lower end and a wide upper end.
5. The construction equipment for the high-pressure jet grouting pile according to claim 2, wherein the corners of the upper ends of the two reset sliding blocks (39) close to each other are provided with chamfers, and the two chamfers form a V-shaped groove.
6. The construction equipment for the high-pressure jet grouting pile according to claim 2, wherein the inner walls of the two rotary columns (17) are provided with distance sensors for detecting the separation degree of the reset sliders (39), and the sliding positions of the reset sliders (39) are detected by the distance sensors.
7. The construction equipment for the high-pressure jet grouting pile is characterized in that the rotary driving piece comprises a driving motor (18) arranged on a horizontal table, the output end of the driving motor (18) is provided with a driving gear (22), a driven gear ring (20) is coaxially arranged on the rotary sleeve (19), and the driven gear ring (20) is meshed with the driving gear (22).
8. The construction equipment for the high-pressure jet grouting pile is characterized in that the lifting pushing piece comprises a mounting cylinder (26) arranged at the upper end of the vehicle body (11), a lifting block (25) is arranged in the mounting cylinder (26) in a sliding fit mode, the lifting block (25) is in threaded fit with a lifting screw rod (24), the upper end of the lifting screw rod (24) is rotatably connected with the inner top of the mounting cylinder (26), the lower end of the lifting screw rod (24) is connected with a lifting motor for driving the lifting screw rod to rotate, a connecting end connected with a horizontal table is arranged on the right side of the lifting block (25), and the left end face of the horizontal table is arranged on the surface of the mounting cylinder (26) in a sliding mode.
9. The construction equipment for the high-pressure jet grouting pile is characterized in that the positioning pieces comprise positioning side plates (13) distributed outside the vehicle body (11) in an array mode, each positioning side plate (13) is provided with a positioning telescopic rod (12), and the output end of each positioning telescopic rod (12) is provided with a supporting plate (14) used for supporting the ground.
10. A method of constructing a high pressure jet grouting pile construction equipment according to any one of claims 1 to 9, comprising the steps of:
the method comprises the following steps: during actual use, the vehicle body (11) is stopped at a corresponding position, the rotary column (17) is suspended at a position to be drilled, the rotary column (17) is driven to rotate rapidly through the rotary driving part, then the position of the rotary column (17) is lowered slowly, and the drill bit assembly (16) is provided with a corresponding cavity on the ground;
step two: when the radius of a drill hole is adjusted, water in a water spray storage tank (30) is sent into a rotating column (17) only through a high-pressure water pump (29), then a high-pressure water column is sprayed out from a water spray pipe (38), the water spray pipe (38) can extend out by a corresponding length under the action of water pressure, and the distance between the two ends of the two water spray pipes (38) is the diameter of the drill hole;
step three: when the drilling is finished, the water supply is stopped, and under the action of a cement pump, cement in the cement storage tank (28) enters the rotary column (17) and then flows out from the water spray pipe (38), so that the drilling is filled with corresponding cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210061450.6A CN114370049B (en) | 2022-01-19 | 2022-01-19 | Construction equipment and construction method for high-pressure jet grouting pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210061450.6A CN114370049B (en) | 2022-01-19 | 2022-01-19 | Construction equipment and construction method for high-pressure jet grouting pile |
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| Publication Number | Publication Date |
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| CN114370049A true CN114370049A (en) | 2022-04-19 |
| CN114370049B CN114370049B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210061450.6A Active CN114370049B (en) | 2022-01-19 | 2022-01-19 | Construction equipment and construction method for high-pressure jet grouting pile |
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| GB596980A (en) * | 1945-01-04 | 1948-01-15 | Francisco Rodolfo Borrajo | Electric drilling apparatus for earth boring |
| WO2006053248A2 (en) * | 2004-11-12 | 2006-05-18 | Alberta Energy Partners | Method and apparatus for jet-fluid abrasive cutting |
| CN101429848A (en) * | 2007-11-06 | 2009-05-13 | 中国石油大学(北京) | Method apparatus and for hydraulic jet side drilling radial branching borehole |
| US20110203847A1 (en) * | 2010-02-25 | 2011-08-25 | Randall Bruce L | Downhole Hydraulic Jetting Assembly, and Method for Stimulating a Production Wellbore |
| CN107882510A (en) * | 2016-09-30 | 2018-04-06 | 上海城地建设股份有限公司 | A kind of boring drill bit device of reducing and construction method |
| CN207862926U (en) * | 2017-12-18 | 2018-09-14 | 江西基业科技有限公司 | A kind of jet grouting pile driving machine |
| CN108547576A (en) * | 2018-04-16 | 2018-09-18 | 郑州勤睿恒电子科技有限公司 | Become water pressure pulse and controls drilling tool |
| CN110130326A (en) * | 2019-05-22 | 2019-08-16 | 中信国安建工集团有限公司 | A kind of Construction of High Pressure Jet Grouting Pile method of Application in Building |
| CN110172969A (en) * | 2019-06-17 | 2019-08-27 | 中交第三公路工程局有限公司 | Quadruple pipe Construction of High Pressure Jet Grouting Pile method |
-
2022
- 2022-01-19 CN CN202210061450.6A patent/CN114370049B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB596980A (en) * | 1945-01-04 | 1948-01-15 | Francisco Rodolfo Borrajo | Electric drilling apparatus for earth boring |
| WO2006053248A2 (en) * | 2004-11-12 | 2006-05-18 | Alberta Energy Partners | Method and apparatus for jet-fluid abrasive cutting |
| CN101429848A (en) * | 2007-11-06 | 2009-05-13 | 中国石油大学(北京) | Method apparatus and for hydraulic jet side drilling radial branching borehole |
| US20110203847A1 (en) * | 2010-02-25 | 2011-08-25 | Randall Bruce L | Downhole Hydraulic Jetting Assembly, and Method for Stimulating a Production Wellbore |
| CN107882510A (en) * | 2016-09-30 | 2018-04-06 | 上海城地建设股份有限公司 | A kind of boring drill bit device of reducing and construction method |
| CN207862926U (en) * | 2017-12-18 | 2018-09-14 | 江西基业科技有限公司 | A kind of jet grouting pile driving machine |
| CN108547576A (en) * | 2018-04-16 | 2018-09-18 | 郑州勤睿恒电子科技有限公司 | Become water pressure pulse and controls drilling tool |
| CN110130326A (en) * | 2019-05-22 | 2019-08-16 | 中信国安建工集团有限公司 | A kind of Construction of High Pressure Jet Grouting Pile method of Application in Building |
| CN110172969A (en) * | 2019-06-17 | 2019-08-27 | 中交第三公路工程局有限公司 | Quadruple pipe Construction of High Pressure Jet Grouting Pile method |
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|---|---|
| CN114370049B (en) | 2023-07-25 |
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