CN113322993A - Manual hole digging pile hole bottom water gushing drainage structure and hole concrete pouring method - Google Patents
Manual hole digging pile hole bottom water gushing drainage structure and hole concrete pouring method Download PDFInfo
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- CN113322993A CN113322993A CN202110558139.8A CN202110558139A CN113322993A CN 113322993 A CN113322993 A CN 113322993A CN 202110558139 A CN202110558139 A CN 202110558139A CN 113322993 A CN113322993 A CN 113322993A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000004576 sand Substances 0.000 claims abstract description 21
- 239000004568 cement Substances 0.000 claims abstract description 13
- 238000011049 filling Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 14
- 238000005253 cladding Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 13
- 239000004575 stone Substances 0.000 description 6
- 229910001335 Galvanized steel Inorganic materials 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000008397 galvanized steel Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
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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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a bottom-gushing water drainage structure of a pile hole dug manually and a method for pouring concrete in the hole, wherein the bottom-gushing water drainage structure of the pile hole dug manually comprises a drainage hole and a drainage pipe, the drainage hole is arranged at the position of gushing water at the bottom of the pile hole, the lower part of the drainage pipe is provided with a filter hole, and the upper part of the drainage pipe is provided with an opening; the lower part of the drain pipe is inserted into the drain hole, and the filter hole is immersed into the drain hole; and the water gushing position at the bottom of the pile hole is positioned in the water drainage hole. The method for pouring concrete in the pile hole of the manual hole digging pile comprises the steps of draining hole excavation, draining pipe insertion, coarse sand filling, draining hole sealing and concrete pouring. According to the invention, the drain hole is arranged at the water gushing position at the bottom of the hole, the drain pipe is arranged, water in the drain hole can enter the drain pipe through the filter hole, and then the gushing water is drained out of the pile hole through the drain pipe, so that the problem that the water-cement ratio of concrete is increased to influence the strength of the concrete due to the gushing water in the pile hole when the concrete is poured in the pile hole is avoided.
Description
Technical Field
The invention relates to the technical field of pile hole construction, in particular to a bottom-gushing water drainage structure of a manually dug pile hole and a method for pouring concrete in the hole.
Background
The pile foundation is a building foundation, and because its atress is strong and widely used, the pile foundation needs to be seted up the stake hole, and the construction preparation stake in the stake hole to form pile foundation structure. The manual hole digging pile is an operation mode of pile holes, is high in pile forming quality, small in pile diameter limitation and capable of achieving 3-4 m large-diameter piles, and is often used as a preferred pile type of a super high-rise building. After the hole is formed by manually digging a hole pile, if the water head of underground water is high and the water pressure is high, water gushing needs to be treated, and concrete is ensured to be in a dry operation environment; or set up the precipitation hole in pile body periphery, the hole depth surpasss pile bottom water level, avoids the pile bottom to gush water through peripheral drainage, but precipitation hole position need be ensured on the water vein through exploring to precipitation hole construction period is long, pours also certain influence to follow-up bottom plate.
Disclosure of Invention
The invention provides a bottom water-pouring drainage structure of a pile hole of a manual hole digging pile and a method for pouring concrete in the hole, aiming at solving the technical problems that underground water in the existing pile hole is difficult to pump and drain completely, and when concrete is poured, accumulated water at the bottom of the pile can increase the water-cement ratio of the concrete, so that the strength of concrete at the bottom of the pile is reduced, the quality of the concrete at the bottom of the pile is influenced, and the strength and the mechanical property of a pile foundation are further influenced.
In order to solve the technical problems, the technical scheme of the invention is as follows: a water discharging structure for bottom gushing of a pile hole dug manually comprises a water discharging hole and a water discharging pipe, wherein the water discharging hole is arranged at the water gushing position at the bottom of the pile hole, a filtering hole is formed in the lower portion of the water discharging pipe, and an opening is formed in the upper portion of the water discharging pipe; the lower part of the drain pipe is inserted into the drain hole, and the filter hole is immersed into the drain hole; the water gushing position at the bottom of the pile hole is positioned in the drainage hole, and the gushing water in the drainage hole enters the drainage pipe through the filtering hole and is discharged through an opening at the upper part of the drainage pipe.
Further, the outside cladding of drain pipe has the filter screen, the filter screen cladding is peripheral at the filtration pore.
Furthermore, coarse sand is filled in the positions inside the drainage holes and outside the filter screen.
Furthermore, the joint position of the drain hole and the bottom of the pile hole is sealed.
Further, the joint position of the drain hole and the bottom of the pile hole is sealed by quick hardening cement.
Further, a valve is arranged near the opening at the upper part of the drain pipe.
Further, the water collecting device also comprises a water collecting container, wherein the water collecting container collects water gushing discharged by the water discharging pipe, and the water gushing in the water collecting container is discharged by the water discharging pump.
An in-hole concrete pouring method utilizing the manual hole digging pile hole bottom water gushing drainage structure comprises the following steps:
s1, digging a drain hole, and digging the drain hole at the water gushing position at the bottom of the pile hole;
s2, inserting a drain pipe, inserting the drain pipe into the drain hole, and completely inserting the filter hole into the drain hole;
s3, filling coarse sand, namely filling the coarse sand in the drainage hole and the outer side of the filter screen;
s4, sealing a drain hole, wherein the joint position of the drain hole and the bottom of the pile hole is sealed by quick hardening cement;
s5, pouring concrete, opening a valve on a drain pipe, discharging water gushing from the bottom of the pile hole through the drain pipe, collecting the water gushing discharged by the drain pipe through a water collecting container, and discharging the water gushing in the water collecting container out of the pile hole through a drainage pump; simultaneously continuously pouring concrete in the pile hole; and when the product of the concrete pouring height and the concrete volume weight is larger than the product of the water head height and the water volume weight, closing the valve on the water discharge pipe, stopping water discharge, and continuously pouring concrete in the pile hole until the concrete pouring in the pile hole is finished.
Furthermore, the initial setting time of the concrete is determined according to the time that the product of the concrete pouring height and the concrete volume weight is larger than the product of the water head height and the volume weight of water, the concrete poured when the drainage valve is closed is initially set, and the influence of water burst on the concrete pouring quality is avoided.
Furthermore, the depth of the drain hole is 500mm, and the diameter of the drain hole is 60-80 mm; the filter holes are formed in the lower portion of the drain pipe within the range of 500mm, the aperture of each filter hole is 4-8 mm, and the hole distance is 80 mm.
The beneficial effects realized by the invention mainly comprise the following points: the water gushing at the bottom of the pile hole can be placed in the drainage hole at the bottom of the pile hole through the drainage hole, the lower part of the drainage pipe is provided with the filtering hole, the water in the drainage hole can enter the drainage pipe through the filtering hole, and then the water is drained through the drainage pipe, and the water gushing concentrated in the drainage hole is drained out of the pile hole, so that the problem that the water-cement ratio of concrete is increased to influence the strength of the concrete when the concrete is poured in the pile hole is avoided, and the engineering quality of a pile foundation is ensured; and the drain hole sets up in stake hole bottom, and drainage is gone on in the drain pipe, does not influence the concrete placement in the stake hole of upper portion, can carry out concrete placement while draining to accelerate the construction process, improve the efficiency of construction, shorten the time limit for a project.
Drawings
Fig. 1 is a schematic longitudinal sectional view of a pile hole of a manual hole digging pile according to an embodiment of the present invention;
FIG. 2 is a schematic longitudinal sectional view of a water drainage structure for bottom-gushing of a hole of a manually excavated pile according to an embodiment of the present invention (a water collection container and a drainage pump are not shown);
fig. 3 is a schematic view of a longitudinal cross-section of a manually bored pile after concrete is poured into a pile hole according to an embodiment of the present invention.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.
Detailed Description
In order to facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.
Example one
Referring to fig. 1 to 3, the manual hole digging pile hole bottom water flushing structure comprises a drain hole 1 and a drain pipe 2 dug at the bottom of a pile hole, wherein a filter hole 21 is formed in the lower portion of the drain pipe 2, an opening 23 is formed in the upper portion of the drain pipe 2, the lower portion of the drain pipe 2 is inserted into the drain hole 1, the filter hole 21 is immersed into the drain hole 1, the drain hole 1 is formed in the water flushing position at the bottom of the pile hole 6, water flushing at the bottom of the pile hole can enter the drain hole 1, and water flushing in the drain hole 1 enters the drain pipe 2 through the filter hole 21 and is discharged through the opening 23 in the upper portion of the drain pipe 2. The water gushing at the bottom of the pile hole can be placed in the drainage hole at the bottom of the pile hole through the drainage hole, the lower part of the drainage pipe 2 is provided with the filtering hole 21, the water in the drainage hole 1 can enter the drainage pipe 2 through the filtering hole 21, and then the drainage is carried out through the drainage pipe 2, the water gushing concentrated in the drainage hole 1 is discharged out of the pile hole, the water-cement ratio of concrete is prevented from being increased due to water seepage in the pile hole when the concrete is poured in the pile hole, and the strength of the concrete is prevented from being influenced, so that the engineering quality of a pile foundation is ensured; and wash port 1 sets up in 6 bottoms in stake holes, and the drainage is gone on in drain pipe 2, does not influence the downthehole concrete placement of upper portion stake, can carry out concrete placement while draining to accelerate the construction process, improve the efficiency of construction, shorten the time limit for a project. The drain holes 1 are typically drilled mechanically.
Referring to fig. 2, as a further preferred scheme, the outside of the drain pipe 2 is preferably coated with a filter screen 5, and the filter screen 5 is coated on the periphery of the filtering hole 21, so that water entering the drain pipe 2 in the pile hole 6 is filtered through the filter screen 5, coarse structures such as sand and stone are filtered, pure water enters the drain pipe 2, drainage is facilitated, and coarse sand and stone are prevented from blocking drainage equipment such as a drainage pump. Filter screen 5 can adopt the cloth that has filtering capability such as nylon screen cloth, and filter screen 5 can ligature in drain pipe 2 periphery, can glue at drain pipe 2 periphery at best for filter screen 5 is more firm in drain pipe 2 peripheral fixed, avoids it to drop during the construction, guarantees at its stability and filtering action during the construction. The drain pipe 2 is preferably made of a PVC pipe or a galvanized steel pipe, and the filtering holes 21 are easily made on the pipe by adopting the PVC pipe or the galvanized steel pipe, so that the construction is easier to carry out; and the PVC pipe or the galvanized steel pipe has high strength and low cost, does not influence the disposable use of the drain pipe 2, and can reduce the use cost.
Referring to fig. 2, as a further preferred scheme, coarse sand 4 is filled in the drain hole 1 and outside the filter screen 5, so that water entering the drain pipe 2 from the drain hole 1 is filtered by the coarse sand 4 for the first time and then by the filter screen 5 for the second time, and the water is filtered by the coarse sand 4 and the filter screen 5 with two filter layers, so that the filtering effect is better, drainage of drainage equipment is further facilitated, and blockage of the drainage equipment by coarse sand, stone and the like is avoided.
Referring to fig. 2, as a further preferred scheme, the joint position of the drain hole 1 and the bottom of the pile hole 6 (i.e. the top of the drain hole 1 and the outer side of the drain pipe 2) is preferably sealed, and the sealing arrangement prevents water gushing in the drain hole 1 from entering the pile hole 6 at the upper part, so that the water-cement ratio during concrete pouring in the pile hole 6 is increased, the strength of pile concrete is reduced, and the construction quality of a pile foundation is affected. The top of the drain hole 1 and the outer side of the drain pipe 2 are preferably sealed by over-quick hard cement, and the structure is quick in solidification, convenient to construct and suitable for quick sealing operation limited by time.
Referring to fig. 2, as a further preferred scheme, a valve 22 is arranged at the upper part of the drainage pipe 2, the drainage of the drainage pipe 2 is conveniently controlled by the valve 22, the valve 22 is opened when drainage is needed by the drainage pump 3, and the valve 22 is closed when drainage is not needed, so that the phenomenon that water gushes out of the drainage pipe 2 and enters the pile hole to affect the pouring of concrete in the pile hole is avoided. The valve 22 may be a conventional valve such as a ball valve.
Example two
Referring to fig. 1 to 3, a method for pouring concrete in a hole of a manual hole digging pile hole bottom water pouring drainage structure according to an embodiment includes the following steps:
s1, excavating the drain holes, and excavating the pile holes manually, wherein the pile quality of the manually excavated piles is high, the pile diameter is limited to be small, and 3-4 m large-diameter piles can be achieved, so that the pile holes are often used as the preferred pile type of the super high-rise building, and the pile hole construction structure and the construction method are suitable for the pile holes of the super high-rise building. After the manual pile hole excavation is completed, a drain hole 1 is excavated at the water gushing position at the bottom of the pile hole, and the drain hole 1 excavation can be completed through mechanical excavation. The reference dimensional specifications of the drain hole 1 are as follows: the hole depth of the drain hole 1 is 500mm, the hole diameter is 600mm, in addition, the size specification of the drain hole 1 can be selected according to the size specification of the drain pipe 2, the hole diameter of the drain hole 1 is generally slightly larger than the pipe diameter of the drain pipe 2, and the hole depth of the drain hole 1 is slightly larger than the length of the filtering hole section at the lower part of the drain pipe 2.
S2, inserting a drain pipe,
the drainage pipe 2 is manufactured in advance, the drainage pipe 2 is manufactured by using a PVC pipeline or a galvanized steel pipe, the lower part of the drainage pipe is provided with filter holes 21, an opening 23 is reserved at the bottom of the drainage pipe 2, the filter holes 21 are formed in the range of 500mm at the lower part of the drainage pipe 2, the aperture of each filter hole 21 is generally 4 x 8mm (namely, four filter holes are formed in each group in a circle, the aperture of each filter hole is 8mm), and the hole spacing is 80mm (namely, the spacing between adjacent groups of holes is 80 mm). The filtering holes 21 can also be selected according to the water gushing condition in the pile hole, if the water quality is better and the coarse sand stones are less, the hole diameter of the filtering holes 21 can be set to be smaller and the hole distance is set to be farther, and if the water quality is poor and the coarse sand stones are more, the hole diameter of the filtering holes 21 can be set to be smaller and the hole distance is set to be closer. The filter holes 21 can be made by drilling holes on the outside of the PVC pipe by an electric drill. In addition, a valve 22 is arranged near the upper opening 23 of the drain pipe, the periphery of the filter hole 21 is covered with the filter screen 3, and the filter screen 3 is bound and adhered to the periphery of the filter hole section of the drain pipe 2. Meanwhile, the bottom of the drain pipe 2 is sealed, and the PVC wafer can be plugged at the bottom of the drain pipe 2, so that sand and stone and the like can be prevented from entering the drain pipe 2 from the bottom of the drain pipe 2.
The filtering hole section of the drain pipe 2 is inserted into the drain hole 1, and the filtering hole 21 completely extends into the drain hole 1, so that the water gushing in the drain hole 1 can enter the drain pipe 2 from the filtering hole 21.
S3, filling coarse sand, inserting the drain pipe into the drain hole 1, filling the coarse sand 4 into the drain hole 1 and outside the filter screen 3, so that the water filtering effect can be further enhanced through the coarse sand 4, and the drain pipe 2 can be fixed in the drain hole 1 through the coarse sand 4, thereby ensuring the installation stability of the drain pipe 2 and further performing the drainage operation better.
S4, sealing the drain hole, sealing the top of the drain hole 1 and the outer side of the drain pipe 2 by the quick hardening cement after the coarse sand 4 is basically filled in the drain hole 1 and outside the filter screen 3 (only the space sealed by the quick hardening cement is reserved at the top), so that water in the drain hole 1 can be prevented from flowing out of the periphery of the drain pipe 2 into the pile hole 6, the drain pipe 2 can be further fixed by the quick hardening cement, and the drain pipe 2 is more stably fixed in the drain hole 1.
S5, pouring concrete, opening the valve 22 on the drain pipe 2, discharging water gushing from the bottom of the pile hole through the drain pipe 2, collecting the water gushing through a water collecting container such as a drainage bucket, wherein the water collecting container such as the drainage bucket is connected near the opening 23 on the upper part of the drain pipe, and a drainage pump is connected in the water collecting container such as the drainage bucket to further discharge the water gushing out of the pile hole; simultaneously continuously pouring concrete in the pile hole; when the product of the concrete pouring height and the concrete volume weight is larger than the product of the water head height and the water volume weight, the water gushing in the pile hole can be pressed by the poured concrete, at the moment, the valve 22 on the drain pipe 2 is closed, the drainage is stopped, and the concrete is continuously poured in the pile hole until the concrete pouring in the pile hole is finished. After pouring is finished, the water collecting container, the drainage pump and the like can be rotated and moved out of the pile hole, and the drainage pipe 2 is poured in the concrete without being taken out.
In addition, the initial setting time of the concrete is determined according to the time that the product of the concrete pouring height and the concrete volume weight is larger than the product of the water head height and the water volume weight, the concrete is prepared according to the time that the product of the concrete pouring height and the concrete volume weight is larger than the product of the water head height and the water volume weight, which is obtained through calculation, as the initial setting time of the concrete, the initial setting time of the concrete is controlled, the concrete poured when the drainage valve is closed is ensured to be initially set, and the concrete pouring quality is prevented from being influenced by water gushing.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a gush water drainage structures at bottom of manual hole digging pile hole which characterized in that: the drainage pipe comprises a drainage hole (1) and a drainage pipe (2), wherein the drainage hole (1) is arranged at the water gushing position at the bottom of a pile hole, the lower part of the drainage pipe (2) is provided with a filter hole (21), and the upper part of the drainage pipe (2) is provided with an opening (23); the lower part of the drain pipe (2) is inserted into the drain hole (1), and the filter hole (21) is immersed into the drain hole (1); the water gushing at the bottom of the pile hole is positioned in the drain hole (1), and the gushing water in the drain hole (1) enters the drain pipe (2) through the filter hole (21) and is discharged through an opening (23) at the upper part of the drain pipe (2).
2. The manual hole digging pile hole bottom water gushing discharge structure according to claim 1, characterized in that: the outside cladding of drain pipe (2) has filter screen (5), filter screen (5) cladding is peripheral in filtration pore (21).
3. The manual hole digging pile hole bottom water gushing discharge structure according to claim 2, characterized in that: coarse sand (4) is filled in the drain hole (1) and at the outer side of the filter screen (5).
4. The manual hole digging pile hole bottom water gushing discharge structure according to claim 3, characterized in that: the joint position of the drain hole (1) and the bottom of the pile hole is sealed.
5. The manual hole digging pile hole bottom water gushing discharge structure according to claim 4, characterized in that: and the joint position of the drain hole (1) and the bottom of the pile hole is sealed by quick hardening cement.
6. The manual hole digging pile hole bottom water gushing discharge structure according to claim 5, characterized in that: and a valve (22) is arranged near an opening (23) at the upper part of the drain pipe (2).
7. The manual hole digging pile hole bottom water gushing discharge structure according to claim 6, characterized in that: the water collecting device also comprises a water collecting container, wherein the water collecting container collects the gushing water discharged by the water discharging pipe (2), and the gushing water in the water collecting container is discharged by the drainage pump.
8. An in-hole concrete pouring method using the structure for draining water gushed from the bottom of the hole of the artificial dug pile according to claim 7, characterized by comprising the steps of:
s1, digging a drain hole, and digging the drain hole (1) at the water gushing position at the bottom of the pile hole;
s2, inserting a drain pipe, inserting the drain pipe (2) into the drain hole (1), and completely extending the filter hole (21) into the drain hole (1);
s3, filling coarse sand, namely filling coarse sand (4) in the drain hole (1) and outside the filter screen (3);
s4, sealing a drain hole, wherein the joint position of the drain hole (1) and the bottom of the pile hole is sealed by quick hardening cement;
s5, pouring concrete, opening a valve (22) on a drain pipe (2), discharging water gushing at the bottom of the pile hole through the drain pipe (2), collecting the water gushing discharged by the drain pipe (2) through a water collecting container, and discharging the water gushing in the water collecting container out of the pile hole through a drainage pump; simultaneously continuously pouring concrete in the pile hole; and when the product of the concrete pouring height and the concrete volume weight is larger than the product of the water head height and the water volume weight, closing a valve (22) on the drainage pipe (2), stopping drainage, and continuously pouring concrete in the pile hole until the concrete pouring in the pile hole is finished.
9. The method for pouring concrete in the pile hole of the manual hole digging pile according to claim 8, characterized in that: the initial setting time of the concrete is determined according to the time that the product of the concrete pouring height and the concrete volume weight is larger than the product of the water head height and the volume weight of water, the concrete poured when the drainage valve is closed is initially set, and the influence of water gushing on the concrete pouring quality is avoided.
10. The method for pouring concrete in the pile hole of the manual hole digging pile according to claim 9, characterized in that: the hole depth of the drain hole (1) is 500mm, and the hole diameter is 60-80 mm; the filter holes (21) are formed in the range of 500mm at the lower part of the drain pipe (2), the aperture of each filter hole (21) is 4-8 mm, and the hole interval is 80 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110558139.8A CN113322993A (en) | 2021-05-21 | 2021-05-21 | Manual hole digging pile hole bottom water gushing drainage structure and hole concrete pouring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110558139.8A CN113322993A (en) | 2021-05-21 | 2021-05-21 | Manual hole digging pile hole bottom water gushing drainage structure and hole concrete pouring method |
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