CN211851719U - Bored pile pore-forming system - Google Patents
Bored pile pore-forming system Download PDFInfo
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- CN211851719U CN211851719U CN202020023940.3U CN202020023940U CN211851719U CN 211851719 U CN211851719 U CN 211851719U CN 202020023940 U CN202020023940 U CN 202020023940U CN 211851719 U CN211851719 U CN 211851719U
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Abstract
The utility model relates to a pore-forming system of a cast-in-situ bored pile, which comprises a drilling platform, a reverse circulation drilling machine, a steel casing, a drill rod, a drill bit, a mud pipe, a filter screen groove, a traction type slag scraping system, a slag discharge hole, a slag collecting box, a sedimentation tank and a mud tank; a reverse circulation drilling machine is arranged on the drilling platform and connected with a drill rod, and a drill bit is arranged at the lower end of the drill rod; the steel casing is fixed on the drilling platform; the drill rod is connected with a slurry pipe, the slurry pipe is connected with a sand pump and a slag outlet, and the slag outlet is positioned above the filter screen groove; a traction type slag scraping system is arranged at the position of the filter screen groove, and a slag collecting box is arranged below a slag discharging hole at the lower end of the filter screen groove; a sedimentation tank is arranged below the filter screen groove. The utility model has the advantages that: the bored pile hole forming system adopts the large-diameter drill rod multi-section progressive cone and cone combined drill bit to drill for hole forming, fully exerts the drilling advantages of different drill bits in different stratums, can effectively improve the verticality of drilling for hole forming, and avoids accidents such as hole collapse and buried drilling.
Description
Technical Field
The utility model belongs to the bridge engineering field, concretely relates to bored concrete pile pore-forming system.
Background
The bored pile has the advantages of convenient construction operation, high construction speed, mature process and the like because the bored pile can be constructed by adopting mechanical operation in the whole process, and is widely applied to the current building pile foundation engineering. The pump-pumping reverse circulation drilling pore-forming method has the advantages of high construction efficiency, good pile hole quality, low pore-forming cost, safe construction and the like, and is preferentially adopted in the construction of the cast-in-situ bored pile. The pump suction reverse circulation bored concrete pile is an underground concealed project which has high quality requirement, multiple construction procedures and needs to be continuously completed in a short time, and the pile is not easy to excavate and accept, so that any one link in the construction has problems, the quality and progress of the whole project are directly influenced, and even huge economic loss and adverse social influence are caused to investors.
Although the pump-pumped reverse circulation cast-in-situ bored pile has been widely applied to engineering construction, certain difficulties still exist at home and abroad aiming at the construction of the ultra-large diameter cast-in-situ bored pile: (1) the drilling of the large-diameter pile is difficult, the problem that the mechanical power loss of a pile body is easy to occur when hard rock strata occur, and the quality of the drilling construction directly determines the construction quality of the project; (2) when drilling large gravel exceeding the diameter of a suction port of the drill bit, the large gravel needs to be broken by using methods such as punching and grabbing, impacting, down-the-hole hammer and the like and then sucked upwards, and particularly under the condition that large gravel exists, the efficiency is obviously reduced; (3) the complete wall protection work is also a great problem in engineering, the requirement on the management of slurry is strict, good operation technology and rich experience are required, otherwise, hole accidents caused by the reduction of a water head due to insufficient reverse circulation flow easily occur, and the traditional slurry wall protection can not ensure that the hole wall does not collapse on the large-diameter hole wall.
In view of this, in order to solve the existing engineering problems, the present invention provides a pore-forming system capable of improving the accuracy and stability of pore-forming of a cast-in-situ bored pile, ensuring the construction quality and efficiency, and reducing the difficulty of site construction.
SUMMERY OF THE UTILITY MODEL
The utility model aims at when pumping reverse circulation construction to super large diameter bored concrete pile pump, the geology frequent change can lead to the inclined hole, can appear leaking construction problems such as thick liquid phenomenon when creeping into big particle diameter pebble bed, provides one kind and can improve bored concrete pile pore-forming accuracy nature, stability, ensures construction quality and efficiency, reduces the bored concrete pile system of holing of the site operation degree of difficulty.
The hole forming system for the cast-in-situ bored pile comprises a drilling platform, a reverse circulation drilling machine, a steel casing, a drill rod, a drill bit, a mud pipe, a filter screen groove, a traction type slag scraping system, a slag discharge hole, a slag collecting box, a sedimentation tank and a mud tank; a reverse circulation drilling machine is arranged on the drilling platform and connected with a drill rod, and a drill bit is arranged at the lower end of the drill rod; the steel casing is fixed on the drilling platform; the drill rod is connected with a slurry pipe, the slurry pipe is connected with a sand pump and a slag outlet, and the slag outlet is positioned above the filter screen groove; a traction type slag scraping system is arranged at the position of the filter screen groove, and a slag collecting box is arranged below a slag discharging hole at the lower end of the filter screen groove; and a sedimentation tank is arranged below the filter screen groove, communicated to the mud tank through a mud pump and a mud pipe, and communicated to the pile hole through the mud pump and the mud pipe.
Preferably, the method comprises the following steps: the steel protects a section of thick bamboo and is fixed in drilling platform through the gomphosis tooth wing ring that the top set up, and steel protects a bottom and is provided with steel sheet stiffening band as the cutting edge.
Preferably, the method comprises the following steps: the drill bit comprises a multi-section progressive roller bit and a cone roller bit; the drill body of the multi-section progressive roller bit is of a stepped progressive structure, and drill teeth are arranged along the periphery of the bottom of the drill body; the drill point of the cone-type roller bit is of a cone-type structure, the three side wings are fixed on the drill rod through the fixing wings, and the drill teeth are uniformly distributed on the side wings and the periphery of the drill point.
Preferably, the method comprises the following steps: the filter screen groove be the tilting and arrange and fix through the support, the filter screen tank bottom is the filter screen, filter screen groove side welding steel sheet, the whole recess structure that is of filter screen groove, and filter screen groove bottom is provided with the scum hole, the slag trap corresponds the scum hole setting.
Preferably, the method comprises the following steps: the traction type slag scraping system consists of a slag scraping plate, a traction rod, a traction rope, a winch and a winch working platform; the traction rod is fixedly connected with the slag scraping plate, the traction rod is connected with the winch through the traction rope, and the winch is located on the winch working platform.
The utility model has the advantages that:
(1) the bored pile hole forming system adopts the large-diameter drill rod multi-section progressive cone and cone combined drill bit to drill for hole forming, fully exerts the drilling advantages of different drill bits in different stratums, can effectively improve the verticality of drilling for hole forming, and avoids accidents such as hole collapse and buried drilling.
(2) The top of the steel casing is fixed on the drilling platform through the embedded toothed wing ring, so that the stability of the steel casing and the drilling platform is improved, and the bottom of the steel casing is provided with a steel plate stiffening band serving as a cutting edge, so that the resistance of the steel casing in the sinking process can be reduced, and the bottom opening of the steel casing is prevented from deforming.
(3) The utility model discloses formed the mud circulation regeneration system who comprises sedimentation tank, mud pit, filter screen groove, collection sediment case etc. reduced the engineering cost of mud preparation, realized the reuse of mud many times, reduced the influence of abandonment mud to the environment simultaneously, had the technical advantage of preparing simple and convenient, low-priced high-efficient, green.
Drawings
FIG. 1 is a schematic diagram of a bored pile hole-forming system;
FIG. 2 is a schematic view of a multi-section progressive roller cone drill bit;
FIG. 3 is a schematic view of a cone type roller cone drill bit;
FIG. 4 is a schematic structural view of a steel casing;
FIG. 5 is a schematic view of a slant type filtering and slag removing system for a cast-in-situ bored pile.
Description of reference numerals: 1-a drilling platform, 2-a reverse circulation drilling machine, 3-a steel casing, 4-a drill rod, 5-a drill bit, 6-a mud pipe, 7-a sand pump, 8-a slag hole, 9-a filter screen groove, 10-a traction type slag scraping system, 11-a slag hole, 12-a slag collecting box, 13-a sedimentation tank, 14-a mud pump and 15-a mud tank; 16-drill body, 17-drill tooth, 18-side wing, 19-fixed wing, 20-drill tip, 21-embedded tooth wing ring, 22-steel plate stiffening belt, 23-bracket, 24-slag scraping plate, 25-traction rod, 26-traction rope, 27-winch and 28-winch working platform.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
As shown in fig. 1-5, the cast-in-situ bored pile hole forming system includes a drilling platform 1, a reverse circulation drilling machine 2, a steel casing 3, a drill rod 4, a drill bit 5, a mud pipe 6, a filter screen groove 9, a traction type slag scraping system 10, a slag discharge hole 11, a slag collection tank 12, a sedimentation tank 13, and a mud tank 15; the drilling platform 1 is provided with a reverse circulation drilling machine 2, the reverse circulation drilling machine 2 is connected with a drilling rod 4, and the lower end of the drilling rod 4 is provided with a drill bit 5; the steel casing 3 is fixed on the drilling platform 1; the drill rod 4 is connected with a slurry pipe 6, the slurry pipe 6 is connected with a sand pump 7 and a slag hole 8, and the slag hole 8 is positioned above the filter screen groove 9; a traction type slag scraping system 10 is arranged at the position of the filter screen groove 9, and a slag collecting box 12 is arranged below a slag discharge hole 11 at the lower end of the filter screen groove 9; a sedimentation tank 13 is arranged below the filter screen groove 9, the sedimentation tank 13 is communicated to a mud tank 15 through a mud pump 14 and a mud pipe 6, and the mud tank 15 is communicated to a pile hole through the mud pump 14 and the mud pipe 6. The bored pile is drilled into a hole through the combination of a large-diameter drill rod multi-section progressive cone bit and a cone bit, the wall protection slurry is pumped into an inclined filter screen groove 9 through a sand pump 7 and a slag hole 8 by a mud pipe 6, the liquid slurry directly flows into a sedimentation tank 13 through a filter screen of the filter screen groove 9, large-particle drilling slag left by filtration is discharged into a slag collection tank 12 through a slag discharge hole 11 and is uniformly transported out by manpower, the slurry in the sedimentation tank 13 is precipitated and then pumped into a slurry tank 15 by a slurry pump 14 through the mud pipe 6 for standby, and expansive soil, caustic soda and cellulose are properly added to improve the performance indexes of the slurry, such as PH, colloid rate, viscosity and the like.
The steel casing 3 is fixed on the drilling platform 1 through a tabling tooth wing ring 21 arranged at the top, and a steel plate stiffening strip 22 is arranged at the bottom of the steel casing 3 and serves as a cutting edge.
The drill bit 5 comprises a multi-section progressive roller bit and a cone roller bit; the drill body 16 of the multi-section progressive roller bit is of a stepped progressive structure, and drill teeth 17 are arranged along the periphery of the bottom of the drill body 16; the drill point 20 of the cone-type roller bit is of a cone-type structure, three side wings 18 are fixed on the drill rod 4 through fixing wings 19, and the drill teeth 17 are uniformly arranged on the peripheries of the side wings 18 and the drill point 20.
The bored concrete pile system of becoming hole, adopt the gradual roller bit of multistage formula to creep into when trompil according to actual geology condition, corresponding stratum is clay layer, silt layer, little cobble layer, mudstone layer, when the drill bit gets into the great cobble layer of particle diameter, need observe drilling tool running condition, footage speed and arrange the sediment condition, when the footage speed is less than 6cm/h or does not have the footage, when slagging tap the difficulty, change for tapered roller bit (drill bit pressure concentrates and improves the broken efficiency of cobble).
Filter screen groove 9 arrange for the tilting, fix through support 23, filter screen groove 9 bottom is the filter screen, side welding steel sheet prevents that mud from splashing, filter screen groove 9 wholly is the recess shape, and is provided with row cinder hole 11 in the bottom, slag collecting box 12 corresponds row cinder hole 11 and sets up, is convenient for bore the sediment with the large granule and arranges into in slag collecting box 12.
The traction type slag scraping system 10 consists of a slag scraping plate 24, a traction rod 25, a traction rope 26, a winch 27 and a winch working platform 28; the traction rod 25 is fixedly connected with the slag scraping plate 24, the traction rod 25 is connected with the winch 27 through the traction rope 26, the winch 27 is positioned on the winch working platform 28, and the winch 27 drives the traction rope 26 to finish cleaning large-particle drilling slag in the filter screen groove 9.
Claims (5)
1. A bored concrete pile pore-forming system which characterized in that: the drilling machine comprises a drilling platform (1), a reverse circulation drilling machine (2), a steel casing (3), a drill rod (4), a drill bit (5), a mud pipe (6), a filter screen groove (9), a traction type slag scraping system (10), a slag discharge hole (11), a slag collection box (12), a sedimentation tank (13) and a mud pit (15); a reverse circulation drilling machine (2) is arranged on the drilling platform (1), the reverse circulation drilling machine (2) is connected with a drilling rod (4), and a drill bit (5) is arranged at the lower end of the drilling rod (4); the steel casing (3) is fixed on the drilling platform (1); the drill rod (4) is connected with a slurry pipe (6), the slurry pipe (6) is connected with a sand pump (7) and a slag outlet (8), and the slag outlet (8) is positioned above the filter screen groove (9); a traction type slag scraping system (10) is arranged at the position of the filter screen groove (9), and a slag collecting box (12) is arranged below a slag discharge hole (11) at the lower end of the filter screen groove (9); a sedimentation tank (13) is arranged below the filter screen groove (9), the sedimentation tank (13) is communicated to a mud tank (15) through a mud pump (14) and a mud pipe (6), and the mud tank (15) is communicated to a pile hole through the mud pump (14) and the mud pipe (6).
2. The bored pile pore-forming system according to claim 1, wherein: the steel casing (3) is fixed on the drilling platform (1) through a jogged toothed wing ring (21) arranged at the top, and a steel plate stiffening belt (22) is arranged at the bottom of the steel casing (3) and serves as a cutting edge.
3. The bored pile pore-forming system according to claim 1, wherein: the drill bit (5) comprises a multi-section progressive roller bit and a cone roller bit; the drill body (16) of the multi-section progressive roller bit is of a stepped progressive structure, and drill teeth (17) are arranged along the periphery of the bottom of the drill body (16); the drill point (20) of the cone-type roller bit is of a cone-type structure, three side wings (18) are fixed on the drill rod (4) through fixing wings (19), and the drill teeth (17) are uniformly distributed on the peripheries of the side wings (18) and the drill point (20).
4. The bored pile pore-forming system according to claim 1, wherein: filter screen groove (9) arrange for the tilting and fixed through support (23), filter screen groove (9) bottom is the filter screen, filter screen groove (9) side welding steel sheet, filter screen groove (9) are whole to be the flute profile structure, and filter screen groove (9) bottom is provided with row cinder hole (11), slag trap (12) correspond row cinder hole (11) and set up.
5. The bored pile pore-forming system according to claim 1, wherein: the traction type slag scraping system (10) consists of a slag scraping plate (24), a traction rod (25), a traction rope (26), a winch (27) and a winch working platform (28); the traction rod (25) is fixedly connected with the slag scraping plate (24), the traction rod (25) is connected with the winch (27) through the traction rope (26), and the winch (27) is located on a working platform (28) of the winch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020023940.3U CN211851719U (en) | 2020-01-06 | 2020-01-06 | Bored pile pore-forming system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020023940.3U CN211851719U (en) | 2020-01-06 | 2020-01-06 | Bored pile pore-forming system |
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| CN211851719U true CN211851719U (en) | 2020-11-03 |
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| CN202020023940.3U Active CN211851719U (en) | 2020-01-06 | 2020-01-06 | Bored pile pore-forming system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593879A (en) * | 2020-12-23 | 2021-04-02 | 湖南鼎盛基础工程有限公司 | Forced circulation method for foundation construction slurry |
| CN113738275A (en) * | 2021-09-02 | 2021-12-03 | 中铁二十三局集团第四工程有限公司 | Anti-pollution construction method for cast-in-situ bored pile in pile foundation engineering |
| CN115288139A (en) * | 2022-08-03 | 2022-11-04 | 中化学建设投资集团有限公司 | Clear hole system of mud for bored concrete pile construction |
-
2020
- 2020-01-06 CN CN202020023940.3U patent/CN211851719U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593879A (en) * | 2020-12-23 | 2021-04-02 | 湖南鼎盛基础工程有限公司 | Forced circulation method for foundation construction slurry |
| CN113738275A (en) * | 2021-09-02 | 2021-12-03 | 中铁二十三局集团第四工程有限公司 | Anti-pollution construction method for cast-in-situ bored pile in pile foundation engineering |
| CN113738275B (en) * | 2021-09-02 | 2024-02-27 | 中铁二十三局集团第四工程有限公司 | Anti-pollution construction method for bored pile of pile foundation engineering |
| CN115288139A (en) * | 2022-08-03 | 2022-11-04 | 中化学建设投资集团有限公司 | Clear hole system of mud for bored concrete pile construction |
| CN115288139B (en) * | 2022-08-03 | 2023-12-22 | 中化学建设投资集团有限公司 | Mud hole cleaning system for cast-in-place pile construction |
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Denomination of utility model: Bored pile drilling system Effective date of registration: 20230927 Granted publication date: 20201103 Pledgee: Industrial Bank Limited by Share Ltd. Wuhan branch Pledgor: HUBEI PROVINCIAL ROAD & BRIDGE Co.,Ltd. Registration number: Y2023980059401 |