CN211713994U - Pipe network drainage structure for pit-in-pit construction - Google Patents

Abstract

An object of the utility model is to provide a hole pipe network hydrophobic construction for well construction in hole for solve the problem that exists among the prior art, including laying in the job site hole in the at least one deck horizontal distribution's in the hole region hydrophobic pipeline with through the connecting pipe connect in hydrophobic pipeline's pumping device, hydrophobic pipeline along the edge setting of hole in the hole and its level be less than the bed course elevation of hole in the hole. Through this pipe network hydrophobic construction for pit-in-pit construction, can realize sustainable groundwater of surging dredge and leave and can not cause inconvenience to whole work progress, space and security under the simple structure.

Description

Pipe network drainage structure for pit-in-pit construction

Technical Field

The utility model relates to a civil engineering hydrophobic apparatus field especially relates to a pipe network hydrophobic construction is used in pit-in-pit construction.

Background

The excavation depth of the pit in the basement pit is generally deep, after a cushion layer is poured according to a conventional method after excavation, if no specific precipitation measure exists, the underground water is easy to gush, a piping phenomenon is formed, if the soil at the bottom of the pit is silty soil with extremely small particle size, the soil can be caused to continuously upwelle, and even after concrete is poured, the concrete can upwelle before the concrete is not solidified, so that a vertical hole of a concrete bottom plate is formed, and a leakage point is formed. If not handled in time, voids and collapse of the underfloor substrate can also result.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hole pipe network hydrophobic construction for well construction in hole for solve the problem that exists among the prior art, through this hole pipe network hydrophobic construction for well construction, can realize sustainable groundwater that will upwelling dredges under the simple structure and leaves and can not cause inconvenience to whole work progress, space and security.

To realize the purpose of the utility model, the utility model adopts the following technical scheme:

the utility model provides a pit in pit is pipe network hydrophobic construction for construction, including laying the hydrophobic pipeline of at least one deck horizontal distribution in the job site pit in the pit region and connect in through the connecting pipe hydrophobic pipeline's pumping device, hydrophobic pipeline sets up and its level is less than the bed course elevation of pit in the pit along the edge of pit in the pit.

As the utility model discloses a preferred, the hydrophobic pipeline includes the inner tube that sets gradually from inside to outside and has the first cladding of soft water permeability.

As the utility model discloses a preferred, the inner tube surface distribution has a plurality of through-holes that link up, the through-hole is the circumference array distribution of multilayer.

Preferably, a second coating layer and a third coating layer are arranged outside the drain pipeline.

Preferably, the second coating layer is located at each position in the circumferential direction of the outer wall of the hydrophobic pipeline.

Preferably, the third coating layer is at least located above the hydrophobic pipeline and the second coating layer, and the third coating layer is a coating layer without water permeability.

Preferably, the first coating layer, the second coating layer and the third coating layer have at least one connection hole penetrating and connected to the through hole.

As the utility model discloses a preferred, the connecting pipe is including the first end that is connected with the water pump and pass connecting hole and through-hole stretch into the inside second tip of inner tube.

Preferably, the second end is provided with a plurality of water collecting holes penetrating through the wall surface.

As the utility model discloses a preferred, be equipped with movable seal ring on the connecting pipe.

The beneficial effects of the utility model reside in that:

the collection of upwelled underground water is realized through the drainage pipeline, and the pumping-away dredging of the collected water is realized through the pumping device again, so that the problem of the upwelled underground water is effectively eliminated, and the dredging structure is simpler, more efficient and lower in cost compared with the traditional plugging structure; meanwhile, the high efficiency and stability of water collection of the drainage pipeline are guaranteed in a multi-layer coating mode, and the use difficulty and the possibility of damage are reduced.

Drawings

Fig. 1 is an overall top view of the present invention;

FIG. 2 is a schematic overall side view of the present invention;

fig. 3 is a schematic cross-sectional view of a drainage pipeline according to a first embodiment of the present invention;

fig. 4 is a schematic sectional view of a drainage pipeline according to a second embodiment of the present invention;

the items in the figure are respectively: 1 drainage pipeline, 11 inner pipes, 111 through holes, 12 first coating layers, 13 second coating layers, 14 third coating layers, 15 connecting holes, 2 connecting pipes, 21 first end parts, 22 second end parts, 23 water collecting holes, 24 water stopping rings and 3 water pumping devices.

Detailed Description

The present invention is described in detail below with reference to the attached drawings:

as shown in fig. 1, 2, and 3, a pipe network drainage structure for pit-in-pit construction includes a layer of drainage pipes 1 laid in a pit area of a construction site pit and horizontally distributed, in this embodiment, a rectangular frame surrounding the pit-in-pit, and a larger drainage area and a better drainage effect can be achieved by arranging a plurality of frame combinations or a multi-layer structure when the floor area of the pit and the pit are enlarged or the depth is deeper. Connect in water drainage pipe 1's pumping device 3 through connecting pipe 2, pumping device prefers to select for use single-phase self-priming jet pump to have good pumping efficiency and performance, water drainage pipe 1 sets up along the edge of hole in the hole and its level is less than the bed course elevation of hole in the hole, thereby make the groundwater of upwelling promptly by hydrophobic the pumping before touching the bed course of hole in the hole, avoid the damage to the bed course and lead to ponding in the hole.

In this embodiment, the hydrophobic pipeline 1 includes an inner pipe 11 and a first coating layer 12 having soft water permeability sequentially arranged from inside to outside. The inner pipe in this embodiment 11 is a PVC pipe, so as to have low use cost, good use effect and long service life, and the material of the first coating 12 wrapped outside the inner pipe is gauze in this embodiment, which is used for filtering and blocking the upwelling groundwater, and preventing silt and silt therein from entering the inner pipe 11 to cause blockage and damage to the pumping device above.

In this embodiment, a plurality of through holes 111 are distributed on the surface of the inner pipe 11 through punching, and the through holes 111 are distributed in a multi-layer circumferential array, so that the groundwater around the through holes 111 can enter quickly and efficiently, and further, after a part of the through holes 111 are blocked by the silt, the drainage flow of the through holes 111 at the position is reduced, sufficient through holes 111 are still provided for drainage.

In this embodiment, the drain pipe 1 is externally provided with a second coating 13 and a third coating 14 to further ensure the installation stability of the drain pipe 1 in the pit and the effect of draining water and preventing the water from flowing upwards.

In this embodiment, the second coating layer 13 is a gravel layer with an average diameter larger than that of the through hole 111, and is located at each circumferential position of the outer wall of the drain pipeline 1, on one hand, the second coating layer is used for blocking the through hole 111 and protecting the first coating layer 12 from being damaged by soil and backfill materials with larger particles in the pit, and on the other hand, the second coating layer is used for forming a coating supporting effect on the inner pipe 11 and ensuring the installation stability of the inner pipe.

In this embodiment, the third coating 14 is at least located above the hydrophobic pipeline 1 and the second coating 13, the third coating 14 is a PE coating without water permeability, and its function is to isolate the rising of groundwater from bottom to top, so that the hydrophobic pipeline 1 can effectively work to be hydrophobic by the rising of its stable water level in the state of rapid water rising, and prevent the rising water from entering the pit, and at the same time, protect the third coating 13 from downward, and prevent the hydrophobic ability from being reduced due to too much material backfilled above to cause the gap which can be hydrophobic to be blocked by too much.

In this embodiment, the first coating 12, the second coating 13 and the third coating 14 have at least one connection hole 15 penetrating through the through hole 111 for allowing the connection pipe 2 to pass through, the connection pipe 2 is directly disposed from the through hole 111, so that the construction amount can be reduced, and the number of the connection pipes 2 can be conveniently adjusted by disposing the plurality of through holes 111 to meet the requirements of different water-repellent work amounts.

In this embodiment, connecting pipe 2 is including being connected with the first end 21 of water pump and passing connecting hole 15 and through-hole 111 and stretch into the inside second end 22 of inner tube 11, and connecting pipe 2 in this embodiment chooses for use the sextant pipe, guarantees through its standardized parameter that the setting of through-hole 11 and connecting hole 15 can be through controllable tolerance control, guarantees that connecting pipe 2 and the clearance between them is controllable, reduces to leak water, leak silt and lead to influencing the hydrophobic effect.

In this embodiment, the second end 22 extends into the inner tube 11 to collect the groundwater therein and is drawn upwards, and the surface of the inner tube is provided with a plurality of water collecting holes 23 penetrating through the wall surface thereof to ensure the water-repellent effect.

Example two

The technical solution described in the second embodiment is similar to that of the first embodiment, and the difference is that:

as shown in fig. 4, in this embodiment, a movable water stop ring 24 is provided on the connection pipe 2, the water stop ring 24 is soft, and has a structure similar to a gasket that is elastically and tightly sleeved on the connection pipe 2, and may be provided between any two layers of the inner pipe inner wall and outer wall, the first coating 12, the second coating 13, and the third coating 14, or between all the layers (in this embodiment, between the outer wall of the inner pipe 11, the first coating 12, the second coating 13, and the third coating 14), and the isolation and sealing effect on silt may be further improved by the structure.

The above embodiments are only described for the preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention, and the various modifications and improvements made by the ordinary person in the art without departing from the design concept of the present invention all fall into the protection scope of the present invention.

Claims (10)

1. The utility model provides a pit-in-pit is pipe network hydrophobic structure for construction, its characterized in that, including laying in at least one deck horizontal distribution's in the job site pit in the pit region hydrophobic pipeline (1) and connect in through connecting pipe (2) the pumping device (3) of hydrophobic pipeline (1), hydrophobic pipeline (1) sets up and its level is less than the bed course elevation of pit-in-pit along the edge of pit-in-pit.

2. A pipe network hydrophobic structure for pit-in-pit construction according to claim 1, characterized in that the hydrophobic pipeline (1) comprises an inner pipe (11) and a first coating layer (12) with soft water permeability sequentially arranged from inside to outside.

3. The pipe network hydrophobic structure for pit-in-pit construction according to claim 2, wherein a plurality of through holes (111) are distributed on the surface of the inner pipe (11), and the through holes (111) are distributed in a multi-layer circumferential array.

4. A pipe network hydrophobic structure for pit-in-pit construction according to claim 3, characterized in that the hydrophobic pipeline (1) is externally provided with a second coating layer (13) and a third coating layer (14).

5. A pipe network drainage structure for pit-in-pit construction according to claim 4, characterized in that the second coating (13) is located at each circumferential position of the outer wall of the drainage pipeline (1).

6. A pipe network hydrophobic structure for pit-in-pit construction according to claim 4, characterized in that the third coating (14) is at least above the hydrophobic pipeline (1) and the second coating (13), and the third coating (14) is a coating without water permeability.

7. A pipe network hydrophobic structure for pit-in-pit construction according to claim 4, characterized in that the first cladding (12), the second cladding (13) and the third cladding (14) have at least one connection hole (15) therethrough to the through hole (111).

8. A pipe network hydrophobic structure for pit-in-pit construction according to claim 7, characterized in that the connecting pipe (2) comprises a first end portion (21) connected with a water pump and a second end portion (22) passing through the connecting hole (15) and the through hole (111) and extending into the inner pipe (11).

9. The pipe network drainage structure for pit-in-pit construction according to claim 8, wherein the second end portion (22) is provided with a plurality of water collecting holes (23) penetrating through a wall surface thereof.

10. The pipe network drainage structure for pit-in-pit construction according to claim 1, characterized in that a movable water stop ring (24) is arranged on the connecting pipe (2).

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