CN216041190U - Special drilling machine for digging, expanding, water plugging and supporting pile plate wall construction - Google Patents
Special drilling machine for digging, expanding, water plugging and supporting pile plate wall construction Download PDFInfo
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- CN216041190U CN216041190U CN202120840365.0U CN202120840365U CN216041190U CN 216041190 U CN216041190 U CN 216041190U CN 202120840365 U CN202120840365 U CN 202120840365U CN 216041190 U CN216041190 U CN 216041190U
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Abstract
The utility model discloses a special drilling machine for construction of digging and expanding a water plugging support pile plate wall, wherein a plate wall scraper is arranged on a spiral hollow drill rod, the plate wall scraper automatically extends out when the drill rod is lifted, the position of a connecting plate wall between a support pile and a water plugging pile can be scraped into a wider groove loose soil layer, cement slurry is sprayed through a nozzle below the plate wall scraper to wash and collapse the side wall soil layer of the groove, and the water plugging pile and the support pile are tightly connected together by a very wide and thick cement soil plate wall through stirring of the cement slurry under high pressure to form the water plugging support pile plate wall.
Description
Technical Field
The utility model belongs to the field of water plugging support pile plate wall construction, and particularly relates to construction equipment for digging and expanding a groove of a connecting plate wall.
Background
Due to the needs of economic construction development, high-rise buildings and super high-rise buildings in various parts of China are abundant, the density of the high-rise buildings is increased, a large number of deep foundation pit projects are generated, and the scale and the depth are continuously increased. In order to meet the excavation requirement of deep foundation pit engineering, a water plugging supporting structure is generally designed to support a water plugging retaining wall, and the current commonly used supporting water plugging retaining wall comprises an underground continuous wall, a jet grouting pile water plugging wall and the like, wherein the underground continuous wall is high in manufacturing cost and polluted, the jet grouting pile water plugging wall is difficult to jet in a hard soil layer, and the construction speed is low.
The existing water-plugging pile-supporting plate wall process and equipment are utilized to construct and support the waterproof retaining wall, the manufacturing cost is low, no pollution is caused, and the like.
Therefore, in order to solve the above problems, it is urgently needed to improve the existing construction equipment for water plugging and pile panel wall support.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a special drilling machine for digging, expanding and plugging a water-retaining pile plate wall.
The utility model relates to a special drilling machine for construction of digging, expanding, water plugging and supporting pile plate walls, which comprises a spiral hollow drill rod, wherein a high-pressure grouting pipe is arranged on one side of the outer wall or the inner wall of a core pipe of the spiral hollow drill rod from top to bottom, the spiral hollow drill rod comprises an upper section of drill rod and a lower section of drill rod, the diameter d of a spiral blade of the upper section of drill rod is larger than the diameter d1 of a spiral blade of the lower section of drill rod, two plate wall scrapers are arranged at the bottom of the spiral blade of the upper section of drill rod and are arranged up and down and positioned at two sides of the spiral hollow drill rod, two groups of high-pressure nozzles communicated with the high-pressure grouting pipe are arranged on the spiral blades at two sides of the lower section of drill rod, each group of high-pressure nozzles comprises 2-3 nozzles, the diameter of the nozzles is 2-3mm, the space between two adjacent nozzles in each group of high-pressure nozzles is 2-6cm, the outer end of each nozzle is 0.5cm away from the outer edge of the spiral blade of the lower section of the spiral drill rod, and the jet direction of the nozzles is vertical to the axis of the core pipe of the spiral hollow drill rod, the jet flow directions of the two groups of nozzles are slightly inclined inwards, and the jet flow centers are crossed at the positions 12 cm-20 cm outside the outer edge of the blade.
The utility model discloses a special drilling machine for excavating, expanding and plugging a water-retaining pile plate wall, wherein 2-3 hook teeth are arranged at the end part of each plate wall scraper, and the plate wall scrapers are of plate type or bow arm type structures.
The utility model relates to a special drilling machine for digging, expanding and water-plugging support pile plate wall construction, wherein the distance between a plate wall scraper and a nozzle is the height of one blade.
The utility model relates to a special drilling machine for digging, expanding and water-plugging support pile plate wall construction, wherein the distance between a plate wall scraper and a nozzle is 20-50 cm.
The utility model relates to a special drilling machine for construction of digging, expanding and water-plugging support pile plate walls, wherein the diameter d of an upper section of drill rod is 10-30cm larger than the diameter d1 of a lower section of drill rod.
The utility model relates to a special drilling machine for digging, expanding and plugging a water supporting pile plate wall, wherein the length of a lower section drilling rod is more than or equal to 0.3 m.
The utility model relates to a special construction drilling machine for digging, expanding and plugging a water-retaining pile plate wall, wherein a plate wall scraper adopts a telescopic scraper.
The utility model has the beneficial effects that:
the utility model discloses a special drilling machine for construction of digging and expanding a water plugging support pile plate wall, wherein a plate wall scraper is arranged on a spiral hollow drill rod, the plate wall scraper automatically extends out when the drill rod is lifted, the position of a connecting plate wall between a support pile and a water plugging pile can be scraped into a wider groove loose soil layer, cement slurry is sprayed through a nozzle below the plate wall scraper to wash and collapse the side wall soil layer of the groove, and the water plugging pile and the support pile are tightly connected together by a very wide and thick cement soil plate wall through stirring of the cement slurry under high pressure to form the water plugging support pile plate wall.
The construction method of the utility model for digging, expanding and plugging the water-plugging support pile plate wall by using the special drilling machine will be further described with reference to the attached drawings.
Drawings
FIG. 1 is a schematic view of a construction method for excavating, expanding and plugging a water-retaining pile plate wall;
FIG. 2 is a schematic view of a water plugging support pile plate wall;
FIG. 3 is a schematic structural view of the drilling machine for construction of the present invention;
FIG. 4 is a schematic view of the panel wall scraper distribution;
FIG. 5 is a schematic view of a nozzle distribution.
Detailed Description
As shown in figure 3, the special drilling machine adopted by the construction method for digging, expanding, water plugging and supporting the pile plate wall comprises a spiral hollow drill rod, one side of the outer wall or the inner wall of a core pipe of the spiral hollow drill rod is provided with a high-pressure grouting pipe 12 from top to bottom, the spiral hollow drill rod comprises an upper section drill rod 7 and a lower section drill rod 11, wherein the diameter d of a spiral blade of the upper section drill rod is larger than the diameter d of a spiral blade of the lower section drill rod1The diameter value formula is as follows: d ═ d1+ 2X (5-15) cm, the diameter d of the upper section drill rod 7 is smaller than the diameter d of the lower section drill rod 111The size of the drill rod is 10-30cm, and the length of the lower section drill rod 11 is more than or equal to 0.3 m.
As shown in fig. 3-5, two plate wall scrapers 9 are arranged at the bottom of the helical blade of the upper section of the drill rod, the two plate wall scrapers are arranged up and down and are positioned at two sides of the helical hollow drill rod, two groups of high-pressure nozzles communicated with a high-pressure grouting pipe 12 are arranged on the helical blades at two sides of the lower section of the drill rod, each group of high-pressure nozzles comprises 2-3 nozzles 10, the diameter of each nozzle 10 is 2-3mm, the distance between every two adjacent nozzles 10 in each group of high-pressure nozzles is 2-6cm, when sand is sprayed, the distance is large, the outer end of each nozzle 10 is 0.5cm away from the outer edge of the helical blade of the lower section of the drill rod, the jet flow direction of each nozzle 10 is vertical to the axis of the core pipe of the helical hollow drill rod, the jet flow directions of the two groups of nozzles are slightly inclined inwards, and the jet flow centers are crossed at positions 12-20 cm away from the outer edge of the blade.
As shown in fig. 1 and 3, a discharge port valve 13 is hinged to the bottom end of a lower section drill rod 11 of the spiral hollow drill rod.
The end part of each plate wall scraper 9 is provided with 2-3 hook teeth, in the process of lifting a fixed-spraying drill rod, the length of the extension of the scraper 9 is automatically adjusted according to the thickness of soil layers between two piles, so that the scraper teeth move upwards on the surface of a supporting pile to scrape grooves with different depths and loosen soil layers at the position of the plate wall, fixed-spraying cement slurry rises above the grooves, moisture in the cement slurry permeates and loosens the soil layers of the grooves, fixed-spraying cement slurry washes soil layers at the two sides of the grooves to clean the surface of the supporting pile 1, and a thicker cement soil plate wall is used for closely adhering a water-blocking pile and the supporting pile together to form the cement soil water-blocking supporting pile plate wall. Or when the drill rod scraper is lifted and the high-pressure water-spraying slurry is used for digging and expanding the groove of the connecting plate wall, the hollow core pipe of the spiral hollow drill rod can be used for opening the discharge port hinged valve 13 by utilizing the impact force of the concrete to press and pour the concrete, and the concrete water-plugging supporting pile plate wall is formed.
The board wall scraper 9 adopts a plate type or bow arm type structure.
The panel scraper 9 is located above the nozzle 10 at a distance of about 20-50cm from the height of one blade.
The plate wall scraper 9 adopts a telescopic scraper, and is driven to stretch by a transmission and braking device, the transmission and braking device is arranged on the spiral hollow drill rod core pipe, and when the spiral hollow drill rod is lifted to regularly spray cement paste, the transmission and braking device works, and the plate wall scraper automatically stretches. The transmission and braking device comprises a hydraulic oil cylinder, a piston rod of the hydraulic oil cylinder is fixedly connected with one end of a transmission rod, the other end of the transmission rod is fixedly connected with the end part of the plate wall scraper, the plate wall scraper 9 is driven to automatically stretch by stretching of the hydraulic oil cylinder, oil is supplied to the hydraulic oil cylinder by a hydraulic station or other hydraulic oil sources matched with an overflow regulating valve system, stretching of the piston rod of the hydraulic oil cylinder is achieved, and then automatic stretching of the plate wall scraper 9 is achieved. The hydraulic oil cylinder can be replaced by an air cylinder, and the hydraulic station or other hydraulic oil sources can be replaced by an air source. The transmission and braking device can also adopt a structure that a motor is matched with a worm gear and a worm, and is in transmission connection with the plate wall scraper 9, and the plate wall scraper 9 can automatically stretch out and draw back through the forward and reverse rotation of the motor.
As shown in fig. 1 and 2, the construction method for digging, expanding and plugging water to support the pile plate wall comprises the following steps:
1) aligning the pile position between the two support piles 1 by using the special drilling machine, drilling to form a hole, lifting a spiral hollow drill rod of the special drilling machine after drilling to the designed depth, and automatically extending out a plate wall scraper 9 arranged at the lower end part of an upper section drill rod 7 when lifting the spiral hollow drill rod;
2) the direction of the plate wall scraper 9 is adjusted to align the plate wall scraper 9 to the center position of the upper plate wall of the support pile 1, when the spiral hollow drill rod is lifted to scrape soil, the plate wall scraper 9 scrapes soil layers at the position of the connecting plate wall 3 loose and hooks the soil layers into a wide groove, and soil bodies falling through the gap between the lower section drill rod 11 and the upper section drill rod 7 fall into pile hole cement paste to form a wide connecting plate groove 4; the cement paste nozzle 10 arranged at the lower part of the plate wall scraper 9 sprays cement paste at the same time, the cement paste rises into the soil layer around the upper section drill rod 7 through the gap between the lower section drill rod 11 and the upper section drill rod 7, and the water in the cement paste permeates and is dissipated in the soil layer to moisten and soften the soil body;
3) when a nozzle on a lower section drill rod 11 is lifted to the position of a groove 4, cement paste is impacted by high-pressure jet flow, cut, crushed and slumped to form a loose soil layer in the groove 4 softened by moisture permeation in the cement paste, the loose soil layer and the cement paste are stirred together to form spout collapsed cement soil 6, the loose soil layer and the cement paste flow into a groove gap 5 and a water plugging pile hole to form a wide cement soil plate wall 3 connected with a water plugging pile and a support pile, the spiral hollow drill rod is lifted to a designed elevation all the time, lifting is stopped, and the wide cement soil plate wall tightly adheres the water plugging pile 2 and the support pile 1 together to form a water plugging support pile plate wall. Or when the plate wall scraper of the spiral hollow drill rod is lifted and the high-pressure cement slurry is used for digging and expanding the groove of the connecting plate wall, the hollow core pipe of the spiral hollow drill rod can be used for opening the discharge port valve 13 to press and pour the concrete, and the concrete water-plugging supporting pile plate wall is formed.
The method is mainly characterized in that a plate wall between a support and a water plugging pile which are very wide and thick is manufactured, and the plate wall is mainly a composite result of two processes of plate wall scraper excavation of a plate wall groove and fixed-spraying hole expansion.
The utility model discloses a special construction drilling machine for digging and expanding a water plugging support pile plate wall, wherein a plate wall scraper is arranged on a spiral hollow drill rod, the plate wall scraper automatically extends out when the drill rod is lifted, the position of a connecting plate wall between a support pile and a water plugging pile is scraped into a wider groove loose soil layer, cement slurry is sprayed through a nozzle below the plate wall scraper to wash and collapse the soil layer on the side wall of the groove, and the water plugging pile and the support pile are tightly connected together by a very wide and very thick cement soil plate wall through stirring mixed cement slurry by high-pressure water to form the water plugging support pile plate wall, so that the construction is convenient and rapid, the power requirement is small, and the operability is high.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (7)
1. The utility model provides a dig special rig of construction of expanding stifled water fender sheet wall which characterized in that: the high-pressure grouting device comprises a spiral hollow drill rod, wherein a high-pressure grouting pipe (12) is arranged on one side of the outer wall or the inner wall of a core pipe of the spiral hollow drill rod from top to bottom, the spiral hollow drill rod comprises an upper section drill rod (7) and a lower section drill rod (11), and the diameter d of a spiral blade of the upper section drill rod is larger than the diameter d of a spiral blade of the lower section drill rod1The bottom of the upper section drill rod helical blade is provided with two plate wall scrapers (9), the two plate wall scrapers are arranged up and down and are positioned on two sides of the helical hollow drill rod, two groups of high-pressure nozzles communicated with a high-pressure grouting pipe (12) are arranged on the helical blades on two sides of the lower section drill rod, each group of high-pressure nozzles comprises 2-3 nozzles (10), the diameter of each nozzle (10) is 2-3mm, the distance between every two adjacent nozzles (10) in each group of high-pressure nozzles is 2-6cm, the outer end of each nozzle (10) is 0.5cm away from the outer edge of the helical blade of the lower section drill rod, the jet direction of each nozzle (10) is perpendicular to the core pipe axis of the helical hollow drill rod, the jet directions of the two groups of nozzles are slightly inclined inwards, and the jet center is crossed at a position of 12-20 cm outside the outer edge of the blade.
2. The special drilling machine for digging, expanding and plugging water supporting pile plate wall according to claim 1, is characterized in that: the end part of each plate wall scraper (9) is provided with 2-3 hook teeth, and the plate wall scraper (9) adopts a plate type or bow arm type structure.
3. The special drilling machine for digging, expanding and plugging water supporting pile plate wall according to claim 2, is characterized in that: the distance between the plate wall scraper (9) and the nozzle (10) is the height of one blade.
4. The special drilling machine for digging, expanding and plugging water supporting pile plate wall according to claim 3, is characterized in that: the distance between the board wall scraper (9) and the nozzle (10) is 20-50 cm.
5. The special drilling machine for digging, expanding and plugging water supporting pile plate wall according to claim 4, is characterized in that: the diameter d of the upper section of the drill rod (7) is larger than that of the lower section of the drill rod (11)1The size is 10-30 cm.
6. The special drilling machine for digging, expanding and plugging water supporting pile plate wall according to claim 5, is characterized in that: the length of the lower section drill rod (11) is more than or equal to 0.3 m.
7. The special drilling machine for digging, expanding and plugging water supporting pile plate wall according to claim 6, is characterized in that: the plate wall scraper (9) adopts a telescopic scraper, and the scraper can be automatically adjusted in a telescopic mode according to the actual distance between the support pile and the water plugging pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120840365.0U CN216041190U (en) | 2021-04-22 | 2021-04-22 | Special drilling machine for digging, expanding, water plugging and supporting pile plate wall construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120840365.0U CN216041190U (en) | 2021-04-22 | 2021-04-22 | Special drilling machine for digging, expanding, water plugging and supporting pile plate wall construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216041190U true CN216041190U (en) | 2022-03-15 |
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ID=80613812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120840365.0U Active CN216041190U (en) | 2021-04-22 | 2021-04-22 | Special drilling machine for digging, expanding, water plugging and supporting pile plate wall construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216041190U (en) |
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2021
- 2021-04-22 CN CN202120840365.0U patent/CN216041190U/en active Active
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