CN215290215U

CN215290215U - Economic high-efficiency precipitation well pipe

Info

Publication number: CN215290215U
Application number: CN202121326251.0U
Authority: CN
Inventors: 李彦青; 张卫卫; 党彪; 兰俊涛; 屈海; 李吉昌; 彭跃松
Original assignee: China Railway Tunnel Stock Co Ltd
Current assignee: China Railway Tunnel Stock Co Ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-12-24
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a high-efficient precipitation well pipe of economy, including multistage well casing unit, the well casing unit is hollow cylindric, and it is stereoplasm PVC pipe, be equipped with a plurality of strip openings that are used for the infiltration of evenly arranging on the well casing unit, per two sections connect through PVC between the well casing unit and be connected, set up PVC glue and consolidate from the tapping between well casing unit and PVC connect. The utility model discloses a main beneficial technological effect lies in: the material is light, the operation is convenient, and the corrosion resistance is strong.

Description

Economic high-efficiency precipitation well pipe

Technical Field

The utility model relates to a civil engineering technical field, concretely relates to high-efficient precipitation well pipe of economy.

Background

Whether the foundation pit construction dewatering is successful or not is directly related to the construction safety and efficiency, and the well pipes of the well point dewatering well commonly used at present have the forms of mesh steel pipes, steel reinforcement cages, dense meshes, concrete pipes and the like. The steel structure has a large dead weight and is difficult to install, and a steel pipe, a steel reinforcement cage and a concrete pipe are used as well pipes, so that the steel structure is heavy in material and needs to be provided with transportation equipment; in addition, the connection form of the two pipes is welding, the process is complicated, a professional electric welder is needed, and the defects of high material cost, complex connection process, low construction efficiency, easy corrosion of underground water, inconvenient maintenance and the like exist.

Disclosure of Invention

The utility model provides a high-efficient precipitation well pipe of economy to it is big to solve current precipitation well pipe construction degree of difficulty, and connection process is complicated, the technical problem who is corroded easily.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the design is an economic and efficient precipitation well pipe, which comprises a plurality of sections of well pipe units, wherein the well pipe units are hollow cylinders and are hard PVC pipes, a plurality of strip-shaped openings which are uniformly distributed and used for water seepage are arranged on the well pipe units, and each two sections of the strip-shaped openings are connected through PVC joints between the well pipe units.

Preferably, the width 5mm of strip open-ended, length 200mm, interval 400mm guarantee to strain the seam effect, can make groundwater smoothly and quick entering well casing, can filter stone, gravel simultaneously again.

Preferably, the PVC fitting comprises a central passage and a fixed portion at both ends thereof, the central passage having an inner diameter equal to the inner diameter of the well tubing unit, the fixed portion being circular and having an inner diameter equal to the outer diameter of the well tubing unit; or the PVC joint is a cylindrical sleeve, and the inner diameter of the PVC joint is the same as the outer diameter of the well pipe unit.

Preferably, the fixed part of the PVC fitting and the well tubular unit are fixedly connected by PCV glue.

Preferably, a self-tapping screw is arranged between the fixing part of the PVC connector and the well pipe unit.

Preferably, the well pipe is arranged in a drilling hole, the diameter of the drilling hole is 200-300mm, and rice stones are filled between the drilling hole and the well pipe.

Compared with the prior art, the utility model discloses a main beneficial technological effect lies in:

(1) the utility model discloses use the PVC well casing, its material is slim and graceful, and the well casing is connected and is convenient for operate, and precipitation well pore-forming construction is quick, reduces construction cost.

(2) The utility model discloses for steel pipe, concrete pipe, PVC pipe price is lower, can reduce project construction cost.

(3) The utility model discloses than steel-pipe formula precipitation well casing, the PVC pipe has the strong characteristics of corrosion resistance, can effectively resist groundwater corrosion, extension well casing life.

(4) The utility model discloses well casing among the foundation ditch excavation process is convenient for demolish and maintain, like steel pipe or concrete pipe material, need adopt to dig machine, electric welder cooperation many people and accomplish and demolish, PVC pipe only needs alone to cooperate handheld instrument to accomplish, the process of being convenient for is maintained.

Drawings

Figure 1 is a schematic view of a well tubing unit according to the present invention.

Fig. 2 is a schematic structural diagram of the PVC joint of the present invention.

Fig. 3 is a schematic structural view of the precipitation well pipe of the present invention.

In the figure, 1 is a PVC pipe, 2 is a strip-shaped opening, 3 is a connecting sleeve, 4 is a self-tapping pipe, 5 is a connecting channel, and 6 is a fixing part.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way.

The programs referred to or relied on in the following embodiments are all conventional programs or simple programs in the art, and those skilled in the art can make routine selection or adaptation according to specific application scenarios.

The unit modules, components, structures, mechanisms, sensors, and other devices referred to in the following examples are all conventional commercially available products unless otherwise specified.

In the description of the present application, it is to be understood that the orientations or positional relationships indicated as referring to the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present application and for simplicity in 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, are not to be construed as limiting the present application. References to "first," "second," etc. in this application are intended to distinguish between similar items and not necessarily to describe a particular order or sequence.

Example 1: an economical and efficient precipitation well pipe comprises a plurality of sections of well pipe units, wherein each well pipe unit is a hollow cylinder and is a hard PVC pipe 1, a plurality of uniformly distributed strip-shaped openings 2 for water seepage are formed in the PVC pipe 1, and each two sections of well pipe units are connected through PVC joints. The width of the strip-shaped opening is 5mm, the length is 200mm, and the distance is 400mm, so that underground water can smoothly and quickly enter the well pipe, and meanwhile, stones and gravel can be filtered.

The PVC joint may adopt a joint structure shown in fig. 2, which includes a connecting passage 5 and fixing portions 6 at both ends thereof, the inner diameter of the intermediate passage 5 is the same as the inner diameter of the PVC pipe 1, the fixing portions are circular, the inner diameter thereof is the same as the outer diameter of the PVC pipe 1, the front and rear PCV pipes 1 are sleeved in the fixing portions 6, and are fixed by applying PVC glue and the self-tapping 4. Or, the PVC joint can adopt a cylindrical connecting sleeve 3, the inner diameter of the connecting sleeve 3 is the same as the outer diameter of the well pipe unit, the connecting sleeve 3 is sleeved on the butt joint part of the two sections of PVC pipes 1 and is fixed by PVC glue, and the self-tapping pipe 4 is used for secondary reinforcement after the glue is condensed.

The following description will be given of a construction method of the above-mentioned precipitation well pipe in the open cut foundation pit, taking a specific engineering project as an example. The length of the foundation pit is 195m, the width of the foundation pit is 14.55-30 m, the depth of the foundation pit is 29.5-38.2 m, and the maintenance structure adopts a supporting mode of an underground continuous wall and an inner support. The stratum is from top to bottom in proper order: the thickness of plain filling soil is about 2 m; the thickness of the sand layer is about 8 m; the thickness of the mucky soil layer is about 3.4 m; the thickness of the fully weathered mixed granite layer is about 20m, and the thickness of the strongly weathered mixed granite layer is about 8 m. The specific construction process is as follows:

(1) PVC pipe preparation

Preparing a PVC pipe according to the depth of the formed hole, and uniformly cutting strip-shaped openings on the pipe body. The length, width and spacing of the strip-shaped openings must be ensured, and the seam filtering effect is ensured.

(2) Pore-forming construction

And (3) adopting a geological drilling machine to form holes, wherein the diameter of each formed hole is 50-100 mm larger than that of the PVC well pipe. The depth of the formed hole meets the requirement, and the verticality is less than or equal to 1 percent. And (5) replacing the slurry in the hole after the hole forming depth is in place, and ensuring that the sand content of the slurry in the hole is less than 8%.

(3) PVC well pipe is transferred down

Each section of PVC pipe is bonded by special glue and secondarily fixed by self-tapping, and each section of PVC pipe is sequentially placed after the connection is completed to the designed depth.

(4) Filter material backfill

And backfilling a gap between the well pipe and the formed hole by using 5-16 mm of rice stones, and backfilling to the ground. Before backfilling, the pipe orifice of the well pipe is plugged to prevent the rice stones from entering the pipe.

(5) Daily maintenance

And (4) cutting the exposed well pipe after excavating one layer of the foundation pit, and if the well pipe is damaged accidentally, repairing and lengthening the well pipe. This novel well casing is the PVC material, and the material is slim and graceful, cuts off and connects long convenient, swift.

In addition, before coating PVC glue, must clean debris on with the PVC pipe with cotton yarn, the PVC pipe is touched strictly before the glue is not solidified, avoids influencing the solidification effect, must select for use the PVC pipe that has certain hardness, prevents that the pipe shaft from taking place the condition such as damaged, rupture.

While the present invention has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that various changes in the specific parameters of the embodiments described above may be made or equivalents may be substituted for elements thereof without departing from the spirit of the invention to form various specific embodiments, which are intended to be within the scope of the invention as defined by the appended claims.

Claims

1. An economic high-efficiency precipitation well pipe is characterized in that: the well pipe unit is a cylindrical hard PVC pipe, a plurality of strip-shaped openings which are uniformly distributed and used for water seepage are arranged on the well pipe unit, and each two sections of the well pipe unit are connected through PVC joints.

2. The economical high efficiency precipitation well pipe of claim 1, wherein: the width of the strip-shaped opening is 5mm, the length of the strip-shaped opening is 200mm, and the distance between the strip-shaped openings is 400 mm.

3. The economical high efficiency precipitation well pipe of claim 1, wherein: the PVC joint comprises a middle channel and fixing parts positioned at two ends of the middle channel, the inner diameter of the middle channel is the same as that of the well pipe unit, the fixing parts are circular, and the inner diameter of the fixing parts is the same as that of the well pipe unit; or the PVC joint is a cylindrical sleeve, and the inner diameter of the PVC joint is matched with the outer diameter of the well pipe unit.

4. The economical high efficiency precipitation well pipe of claim 3, wherein: the fixed part of the PVC joint and the well pipe unit are fixedly connected through PVC glue.

5. The economical high efficiency precipitation well pipe of claim 4, wherein: and a self-tapping screw is arranged between the fixing part of the PVC joint and the well pipe unit.

6. The economical high efficiency precipitation well pipe of claim 1, wherein: the well pipe is arranged in a drilling hole, the diameter of the drilling hole is 200-300mm, and rice stones are filled between the drilling hole and the well pipe.