CN215562732U - Pore-forming device for installing light well point pipe - Google Patents
Pore-forming device for installing light well point pipe Download PDFInfo
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- CN215562732U CN215562732U CN202121618703.2U CN202121618703U CN215562732U CN 215562732 U CN215562732 U CN 215562732U CN 202121618703 U CN202121618703 U CN 202121618703U CN 215562732 U CN215562732 U CN 215562732U
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Abstract
The utility model provides a hole forming device for installing a light well point pipe. The hole forming device comprises a hole forming pipe and a hydraulic high-frequency vibration hammer, the hole forming pipe is a hollow steel pipe, the diameter of the hole forming pipe is larger than the outer diameter of the light well point pipe to be installed, a lower end pipe orifice of the hole forming pipe is hinged with a downward freely movable end plate, a feed inlet with the aperture larger than that of the light well point pipe to be installed is arranged at the upper part of the hole forming pipe, and the length of the feed inlet from the bottom end surface of the hole forming pipe is larger than or equal to that of the light well point pipe to be installed; the top end of the hole forming pipe is fixedly connected with the hydraulic high-frequency vibration hammer through a flange connecting steel plate, and a lifting lug and a hydraulic oil pipe which are used for being connected with power equipment are arranged above the hydraulic high-frequency vibration hammer. The utility model solves the problems of high pore-forming difficulty, necking, poor pore-forming quality and the like caused by the fluidity of sludge in the plastic flow layer of the soft soil foundation and the lateral pressure from the peripheral sludge, improves the construction efficiency of the light well point pipe in the deep soft soil field, and greatly shortens the construction period.
Description
Technical Field
The utility model relates to the field of foundation treatment construction, in particular to a pore-forming device for installing a light well point pipe in pre-pressing method foundation treatment construction in a soft soil field by taking the light well point pipe as a drainage vertical shaft.
Background
The soft soil foundation has fine soil particles, large pore ratio and large water content, and the water in the pores of the soft soil is not easy to discharge, so that the foundation strength is low, and the main problem generated in the construction engineering on the foundation is that the foundation deforms after being loaded to cause the sinking of the building to cause the instability of the building. Therefore, the method for processing the soft foundation or the measures adopted are improper, which not only increases the project amount, costs too much project cost, prolongs the project construction period, but also may cause the failure of the project. Therefore, the reasonable soft foundation treatment method is selected to achieve the foundation reinforcement strength, and the safety and stability of the upper structure are guaranteed to be particularly important.
The light well point dewatering is commonly used in the construction process of foundation pit shallow dewatering. The basic principle of the method is consolidation drainage, a vertical drainage channel is arranged in the soft soil in an impacting mode, and a vacuumizing preloading load mode is adopted, so that the consolidation drainage of the soft soil layer is manually accelerated, the physical and mechanical indexes of the soft soil layer are improved, and the settlement after construction is reduced.
At present, the following two methods are commonly used for constructing light well points: firstly, the water flushing method is used for hole forming construction, high-pressure water flow is used for flushing soil, and a punching pipe sinks by means of self weight; and secondly, hole forming construction is carried out by a drilling method, and hole forming construction is carried out by a long spiral drilling machine. The above method has the following problems in the pore-forming process: carry out the pore-forming in silt matter clay, because the mobility of silt matter clay and come from the lateral pressure of silt all around, lead to behind the pore-forming, appear the phenomenon of necking down very soon, though can be with light-duty well point pipe down in the hole, it is difficult to fill the grit material in the hole, is difficult to reach the pore-forming quality of designing requirement. Secondly, the two methods have long construction period, high cost and relatively complex process and cause certain influence on the surrounding environment.
Disclosure of Invention
In order to enable construction to be more efficient, the utility model provides a pore-forming device for installing a light well point pipe, aiming at the problems in the existing light well point pipe construction.
In order to achieve the technical purpose, the utility model provides a hole forming device for installing a light well point pipe; the hole forming device comprises a hole forming pipe and a hydraulic high-frequency vibration hammer, the hole forming pipe is a hollow steel pipe, the diameter of the hole forming pipe is larger than the outer diameter of the light well point pipe to be installed, a lower end pipe orifice of the hole forming pipe is hinged with a downward freely movable end plate, a feed inlet with the aperture larger than that of the light well point pipe to be installed is arranged at the upper part of the hole forming pipe, and the length of the feed inlet from the bottom end surface of the hole forming pipe is larger than or equal to that of the light well point pipe to be installed; the top end of the hole forming pipe is fixedly connected with the hydraulic high-frequency vibration hammer through a flange connecting steel plate, and a lifting lug and a hydraulic oil pipe which are used for being connected with power equipment are arranged above the hydraulic high-frequency vibration hammer.
The utility model has the following excellent technical scheme: the hole forming pipe is a hollow steel drill rod with the diameter of 200mm, and an end head plate at the bottom end of the hole forming pipe is hinged with a pipe opening.
The further technical scheme of the utility model is as follows: the power equipment adopts a digging machine with a bucket removed, a lifting lug of the hydraulic high-frequency vibration hammer is fixedly installed on a lifting arm of the power equipment through a pin, the hydraulic high-frequency vibration hammer is connected with a hydraulic oil source on the power equipment through a hydraulic oil pipe, and the power equipment provides power for the hydraulic high-frequency vibration hammer.
The utility model has the following excellent technical scheme: the feed inlet is an upwardly inclined enlarged opening, the caliber of the feed inlet is larger than the pipe diameter of the hole forming pipe, and the length of the connecting part of the feed inlet and the hole forming pipe, which is far away from the bottom end face of the hole forming pipe, is larger than or equal to the length of the light well point pipe to be installed.
The utility model has the following excellent technical scheme: the flange connecting steel plate is welded at the top end of the hole forming pipe, a plurality of connecting screw holes are formed in the flange connecting steel plate, and the flange connecting steel plate is connected with the hydraulic high-frequency vibration hammer through a plurality of connecting bolts; and a plurality of reinforced steel plates welded with the flange connecting steel plates are arranged at the top of the pore-forming pipe.
The utility model can adopt a conventional excavator as power equipment, a bucket of the excavator is detached, the excavator bucket is connected with a hydraulic high-frequency vibration hammer, the hydraulic high-frequency vibration hammer is matched with a hydraulic oil source, the hydraulic high-frequency vibration hammer is arranged at the front end of a boom of the excavator through a pin, the hydraulic high-frequency vibration hammer is connected with the hydraulic oil source on the power equipment of the excavator through a hydraulic oil pipe, and the hydraulic high-frequency vibration hammer is connected with a pore-forming pipe to form a pore-forming device. In the process of forming the hole, an end plate at the lower end of the hole forming pipe and the hole forming pipe are closed, a hydraulic high-frequency vibration hammer is started, pressure is applied, and the hole forming pipe is pressed into a soft soil layer to form a light well point pipe mounting hole; the PVC light well point pipe wrapped and sealed by the upper end opening penetrates through the feed inlet and is fed into the hole, then sandy soil is backfilled between the outer wall of the well point pipe and the hole wall through the feed inlet, the hole pipe is lifted, the hole pipe is compacted by vibration, the end opening at the bottom of the hole forming pipe is lifted under the action of the gravity of the sandy soil and the light well point pipe, the hole forming pipe is naturally opened to be in a vertical state, and the hole forming pipe is lifted to the ground.
The hydraulic vibration hammer is adopted for drilling, the pore-forming pipe is made of hollow steel, an end steel plate at the bottom end of the pore-forming pipe can be opened, the pore-forming pipe can be quickly driven into a soft soil layer by vibration and hydraulic pressure in the pore-forming process, the pore-forming effect is better, the pore-forming pipe is deeper, after the pore-forming pipe is inserted into a designed depth, the light well point pipe can be directly inserted through an insertion hole in the upper part of the pore-forming pipe, then the pore-forming pipe can be used as a temporary wall protecting pipe of a well pipe mounting hole through the return sand of the pore-forming pipe, the pore-forming pipe can be lifted after the light well point pipe is mounted, and in the lifting process of the pore-forming pipe, the end steel plate can be directly opened, so that the pore-forming pipe can be conveniently taken down; the utility model can ensure the insertion design depth of the light well point pipe, solves the problems of high pore-forming difficulty, necking down, poor pore-forming quality and the like caused by the fluidity of sludge in the soft soil foundation flow plastic layer and the lateral pressure from the peripheral sludge, improves the construction efficiency of the light well point pipe in the deep soft soil field, greatly shortens the construction period, ensures the foundation treatment quality and reduces the engineering cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention installed in a power plant;
FIG. 3 is a schematic structural view of a hole-forming steel pipe according to the present invention;
FIG. 4 is a cross-sectional view AA in FIG. 1;
FIG. 5 is a schematic view of the connection of the hydraulic high frequency vibration hammer of the present invention to a power unit;
FIG. 6 is a schematic representation of a lightweight well site pipe construction process using the present invention.
In the figure: the method comprises the following steps of 1-a pore-forming pipe, 2-a hydraulic high-frequency vibration hammer, 3-an end plate, 4-a feed inlet, 5-a light well point pipe to be installed, 6-a flange connecting steel plate, 7-power equipment, 7-1-a suspension arm, 8-a lifting lug, 9-a hydraulic oil pipe, 10-a reinforcing steel plate and 11-a pin.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the present invention will be further described with reference to the accompanying drawings and examples. Fig. 1 to 6 are drawings of embodiments, which are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the present invention. The following claims presented in the drawings are specific to embodiments of the utility model and are not intended to limit the scope of the claimed invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The pore-forming device used in the embodiment of the utility model is shown in fig. 1 and fig. 3, and comprises a pore-forming pipe 1 and a hydraulic high-frequency vibration hammer 2, wherein the pore-forming pipe 1 is made of hollow steel with the length of 6.5m and the diameter of 200mm, the bottom end of the pore-forming pipe is an end plate 3 with the diameter of 200mm, the end plate 3 is hinged with a pipe orifice at the lower end of the pore-forming pipe 1 and can be freely opened downwards under gravity operation, the top end of the pore-forming pipe is fixedly connected with the hydraulic high-frequency vibration hammer 2 through a flange connecting steel plate 6, a feed inlet 4 with the aperture larger than that of a light well point pipe 5 to be installed is arranged at the upper part of the pore-forming pipe 1, the feed inlet 4 is an upward inclined expanding opening, the aperture is larger than that of the pore-forming pipe 1, and the length of the position, which is connected with the pore-forming pipe 1, of the feed inlet 4 is slightly larger than that of the light well point pipe 5 to be installed. As shown in fig. 4, the flange connecting steel plate 6 is welded at the tail end of the hole forming pipe 1, a plurality of connecting screw holes are formed in the flange connecting steel plate 6, and the flange connecting steel plate is connected with the hydraulic high-frequency vibration hammer 2 through a plurality of connecting bolts; a plurality of reinforcing steel plates 10 welded with the flange connecting steel plates 6 are arranged at the top of the pore-forming pipe 1; as shown in fig. 5, a lifting lug 7-1 for connection with a power plant 7 is provided above the hydraulic high-frequency vibratory hammer 2.
The power equipment 7 of the utility model can adopt a digging machine, as shown in figure 2, the bucket of the digging machine is detached and is provided with a hydraulic oil source; the lifting lug 8 of the hydraulic high-frequency vibration hammer 2 is fixedly arranged on a lifting arm 7-1 (namely a lifting arm of the excavator) of the power equipment 7 through a pin 11, the hydraulic high-frequency vibration hammer 2 is connected with a hydraulic oil source on the power equipment 7 through a hydraulic oil pipe 9, and the power equipment 7 supplies power to the hydraulic high-frequency vibration hammer 2.
The construction process of the present invention is further described with reference to the following embodiments, where the embodiments are directed to a soft soil field, the thickness of the soft soil layer of the soft soil field is about 3m, the soft soil is too thick, and the soft soil is covered with about 3m of filling soil, a constructor uses the construction method of the present invention to install a light well point pipe, the installation process of a single light well point pipe is shown in fig. 6, and the specific steps are as follows:
finding out the thickness of soft soil of a field to be about 3m according to geological survey data, determining the length of a pore-forming pipe to be 6.5m, marking pore-forming point positions at the points, dividing all the pore-forming point positions into primary pore-forming point positions according to pore-forming sequence, arranging the pore-forming point positions at intervals, and particularly showing the distribution effect as shown in figure 1;
secondly, moving the prepared pre-hole forming equipment to the position near the first hole forming point of the primary hole forming points, aligning the hole forming pipe to a construction point, closing an end head plate at the lower end of the hole forming pipe and the hole forming pipe 1, wherein the verticality deviation of the hole forming pipe 1 is less than 1.5%;
starting a hydraulic high-frequency vibration hammer, applying pressure, pressing the pore-forming pipe into the soft soil layer through the upper filling layer until the pore-forming pipe 1 reaches 0.5m (the penetration depth of the pore-forming pipe is 5m) above the bottom of the soft soil layer, and stopping pressing;
manufacturing a pvc light well point pipe, wherein the length of the light well point pipe 5 to be installed is 5.8m, the upper end mouth is wrapped and sealed by a plastic bag, the lower end of the light well point pipe is manufactured into a filter pipe, the light well point pipe wrapped and sealed by the upper end mouth passes through a feed port 4 on the upper part of a pore-forming pipe 1 and is fed into the pore-forming pipe 1, the bottom of the light well point pipe is arranged on an end plate 3 of the pore-forming pipe 1, the pipe orifice is arranged at a position below the feed port 4 and is vertically arranged in the pore-forming pipe 1, then the pile pipe is pulled out to be 500mm above the ground, and the light well point pipe is exposed out of the ground by 0.3 m;
fifthly, backfilling sandy soil between the outer wall of the light well point pipe and the pore-forming pipe 1 through the feeding hole 4, wherein the particle size of the backfilled sandy soil is 0.075-2 mm, and the mud content is not more than 5%.
Lifting the hole forming pipe 1, vibrating and compacting to complete the installation process of the light well point pipe at the construction point;
and seventhly, after the construction of the backfill filter material is finished, sealing and tamping by clay within 1m of the depth from the ground surface to prevent air leakage, removing the upper end head to wrap a plastic bag, and finishing the installation of the light well point.
In summary, the disclosure of the present invention is not limited to the above-mentioned embodiments, and persons skilled in the art can easily set forth other embodiments within the technical teaching of the present invention, but such embodiments are included in the scope of the present invention.
Claims (5)
1. The utility model provides a pore-forming device that is used for light-duty well point pipe to install which characterized in that: the hole forming device comprises a hole forming pipe (1) and a hydraulic high-frequency vibration hammer (2), the hole forming pipe (1) is a hollow steel pipe, the diameter of the hole forming pipe is larger than the outer diameter of a light well point pipe (5) to be installed, a lower end pipe orifice of the hole forming pipe (1) is hinged with an end plate (3) which freely moves downwards, a feeding hole (4) with the diameter larger than that of the light well point pipe (5) to be installed is arranged at the upper part of the hole forming pipe (1), and the length of the feeding hole (4) from the bottom end face of the hole forming pipe (1) is larger than or equal to that of the light well point pipe (5) to be installed; the top end of the hole forming pipe (1) is fixedly connected with the hydraulic high-frequency vibration hammer (2) through a flange connecting steel plate (6), and a lifting lug (8) and a hydraulic oil pipe (9) which are used for being connected with power equipment (7) are arranged above the hydraulic high-frequency vibration hammer (2).
2. The hole forming device for light well point pipe installation of claim 1, wherein: the hole forming pipe is a hollow steel drill rod with the diameter of 200mm, and an end plate (3) at the bottom end of the hole forming pipe is hinged with a pipe opening.
3. The perforating unit for light well point tubular installation as recited in claim 1 or 2 further characterized by: the power equipment (7) adopts a digging machine with a bucket removed, a lifting lug (8) of the hydraulic high-frequency vibration hammer (2) is fixedly arranged on a lifting arm (7-1) of the power equipment (7) through a pin (11), the hydraulic high-frequency vibration hammer (2) is connected with a hydraulic oil source on the power equipment (7) through a hydraulic oil pipe (9), and the power equipment (7) provides power for the hydraulic high-frequency vibration hammer (2).
4. The perforating unit for light well point tubular installation as recited in claim 1 or 2 further characterized by: the feed inlet (4) is an upwardly inclined enlarged opening, the caliber of the feed inlet is larger than the pipe diameter of the hole forming pipe (1), and the length of the connecting part of the feed inlet (4) and the hole forming pipe (1) from the bottom end surface of the hole forming pipe (1) is larger than or equal to the length of the light well point pipe (5) to be installed.
5. The perforating unit for light well point tubular installation as recited in claim 1 or 2 further characterized by: the flange connecting steel plate (6) is welded at the top end of the hole forming pipe (1), a plurality of connecting screw holes are formed in the flange connecting steel plate (6), and the flange connecting steel plate is connected with the hydraulic high-frequency vibration hammer (2) through a plurality of connecting bolts; the top of the pore-forming pipe (1) is provided with a plurality of reinforced steel plates (10) welded with the flange connecting steel plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121618703.2U CN215562732U (en) | 2021-07-15 | 2021-07-15 | Pore-forming device for installing light well point pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121618703.2U CN215562732U (en) | 2021-07-15 | 2021-07-15 | Pore-forming device for installing light well point pipe |
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| Publication Number | Publication Date |
|---|---|
| CN215562732U true CN215562732U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121618703.2U Active CN215562732U (en) | 2021-07-15 | 2021-07-15 | Pore-forming device for installing light well point pipe |
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| CN (1) | CN215562732U (en) |
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2021
- 2021-07-15 CN CN202121618703.2U patent/CN215562732U/en active Active
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