Drainage structure

Abstract

The utility model discloses a drainage structure and aims to provide a drainage structure which is simple in structure, low in construction cost and larger in water adsorption capacity when inserted into a soil layer, a drainage channel in the drainage structure is isolated from a soil filling layer and does not make direct contact with the soil filling layer, and the drainage channel can be pulled out after drainage is completed so as to reduce settlement after soil engineering of a foundation and soil layer pollution. The drainage pipe comprises a drainage pipe body, a plurality of drainage grooves are formed in the outer edge of the drainage pipe body in an array mode, the drainage grooves are parallel to the length extending direction of the drainage pipe body, a sealing layer is arranged on the outer edge of the connecting end of the drainage pipe body, and a drainage channel is formed between the sealing layer and the drainage grooves. The downward pressing end of the drainage pipe body is matched with a clay layer through a downward pressing conical block, the drainage channels are matched with the clay layer through the drainage grooves, and the connecting end of the drainage pipe body is connected with an external water pump. The utility model is applied to the technical field of foundation treatment in geotechnical engineering.

Description

TECHNICAL FIELD

[0001] The utility model is applied to the technical field of foundation treatment in geotechnical engineering, and particularly relates to a drainage structure. BACKGROUND

[0002] In the geotechnical engineering industry, different geology, climate and altitude will adopt different construction methods, construction materials and structural designs, for example, in coastal, delta and inland lake regions, the soil in such regions is generally weakly cohesive, contains more moisture, and has problems such as low strength and insufficient solid. When engineering construction is carried out in such regions, the foundation soil layer with high moisture content and low strength usually needs to be drained and consolidated by using vacuum preloading to reduce ground settlement and uneven settlement after construction and improve the overall bearing capacity of the foundation. The vertical drainage channel buried in the foundation soil in the drainage consolidation method is usually a plastic drainage board or a bagged sand well, and after the soil is drained and consolidated, the drainage board inserted into the soil will be compressed by the soil and cannot be taken out, so the drainage board will be buried in the soil, resulting in that the drainage board cannot be reused, the construction cost is high, and such plastic drainage board is a harmful substance that is difficult to decompose, which will cause soil pollution if it is buried in the foundation soil for a long time. The water and gas in the fill layer are connected and communicated with the drainage board, and additional isolation measures need to be taken when vacuumizing. When the plastic drainage board or the bagged sand well is left in the foundation soil for a long time, it will continue to act and form a drainage channel over time, and continuous drainage of the drainage channel will cause continuous ground settlement and uneven settlement of the completed building, greatly affecting the use effect. If a drainage structure with simple structure, low construction cost, greater adsorption of moisture in the soil layer, isolation of the drainage channel in the drainage structure from the fill layer without direct contact, and pull-out after drainage to reduce post-construction settlement of the foundation soil and soil pollution can be designed, the above problems can be solved. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problems of overcoming the deficiencies of the prior art and provides a drainage structure with simple structure, low construction cost, greater adsorption of moisture in the soil layer, isolation of the drainage channel in the drainage structure from the fill layer without direct contact, and pull-out after drainage to reduce post-construction settlement of the foundation soil and soil pollution.

[0004] The utility model adopts the technical scheme: the utility model discloses a drainage pipe body, the outer edge array of drainage pipe body is provided with a plurality of drainage groove, a plurality of Drainage groove is parallel to the length extension direction of drainage pipe body Setting, the outer edge of drainage pipe body connecting end is provided with sealing layer, the sealing layer length value is greater than the filling layer thickness value, the sealing layer and a plurality of drainage groove between constitute drainage channel, the drainage pipe body lower pressing end is matched with clay layer through lower pressing taper block, a plurality of drainage channel is matched with clay layer through a plurality of drainage groove, the drainage pipe body connecting end is connected with external water pump.

[0005] Further, it also includes the pullout sleeve, the drainage pipe body is provided with cylindrical structure, and the connecting hole is arranged between the adjacent two groups drainage groove, and the pullout sleeve is connected with the drainage pipe body connecting end through a plurality of locking screws and a plurality of connecting holes.

[0006] Further, the pullout sleeve is provided with pullout hole, and the pullout sleeve is connected with external pullout equipment through the pullout hole.

[0007] Further, the outer side of the drainage pipe body water pumping end is provided with geotextile, and the geotextile is matched with the outer edge of the drainage pipe body, and the opening end height of the upper end of the geotextile is higher than the lower end of the sealing layer.

[0008] Further, the sealing layer is close to the lower end of the lower pressing taper block one end height is lower than the lowest point of the filling layer on the clay layer.

[0009] Further, the middle part of the drainage pipe body connecting end is provided with a weight-reducing groove, and a plurality of connecting holes are communicated with the weight-reducing groove.

[0010] Further, the drainage pipe body is provided with wide long plate structure, and a plurality of drainage grooves are arranged on the two sides of the wide surface of the drainage pipe body, and the sealing layer is arranged on the outer edge of the drainage pipe body connecting end and matched with a plurality of drainage grooves, and the matched pullout sleeve is connected with the drainage pipe body.

[0011] Further, the two sides of the pressing end of the drainage pipe body are provided with pressing inclined plane, and the two groups of pressing inclined planes are matched with the clay layer.

[0012] The utility model discloses a beneficial effect is: the sealing layer is provided with on the drainage pipe body upper end, can form drainage passage with several drainage groove, when connecting with external water pump, produce greater vacuum adsorption, thereby make several drainage groove and the adsorption between clay layer is greater, and the adsorption effect is better, the sealing layer length value is greater than the filling layer thickness value, and the drainage passage in drainage structure is isolated with the filling layer and does not directly contact, and through the pullout sleeve can realize the drainage pipe body is drawn out, and carries out synchronous filling, can effectively prevent the soil density of pumping place is not uniform and leads to collapse etc. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of drainage structure in example one;

[0014] Figure 2 It is the exploded view of drainage structure in example one;

[0015] Figure 3 It is the section view of drainage structure application scene in example one;

[0016] Figure 4 It is Figure 3 The enlarged view of A in it;

[0017] Figure 5 It is the top view of drainage pipe body in example one;

[0018] Figure 6 It is the three-dimensional structure schematic diagram of drainage structure in example two;

[0019] Figure 7 It is the exploded view of drainage structure in example two;

[0020] Figure 8 It is the top view of drainage pipe body in example two. DETAILED DESCRIPTION

[0021] Example one:

[0022] As Figures 1 to 5As shown in the embodiment, the utility model discloses a drainage pipe body 1, the outer edge of drainage pipe body 1 is provided with several drainage grooves 2, several drainage grooves 2 are parallel to the length extension direction of drainage pipe body 1 and are arranged, the outer edge of drainage pipe body 1 connecting end is provided with sealing layer 3, sealing layer 3 and several drainage grooves 2 between constitute drainage channel 4, drainage channel 4 is isolated with the filling layer 14 and does not directly contact, drainage pipe body 1 lower pressing end is matched with clay layer 13 through lower pressing taper block 5, several drainage channels 4 are matched with clay layer 13 through several drainage grooves 2, and drainage pipe body 1 connecting end is connected with external water pump. Therefore, when the clay layer 13 needs to be pumped, only several drainage pipe bodies 1 are arrayed and pumped into the pumping area, the drainage groove 2 is in full contact with the clay layer 13, and several drainage channels 4 are connected with the external water pump. Since the inner diameter of the drainage channel 4 is small, the adsorption force during pumping is larger, and water will not overflow from the gap between the drainage groove 2 and the clay layer 13. Starting the external water pump to form negative pressure can realize the pumping operation of the clay layer 13, effectively prevent water from overflowing and settling, and has simple structure and higher pumping efficiency.

[0023] As Figure 2 shown in the embodiment, it also includes a pulling sleeve 6, the drainage pipe body 1 is provided in a cylindrical structure, the connecting holes 7 are arranged at the connecting portions between the adjacent two groups of drainage grooves 2, and the pulling sleeve 6 is connected with the connecting end of the drainage pipe body 1 through the locking screws 8 and the connecting holes 7. Therefore, after the pumping operation is completed, the water pump is removed, the pulling sleeve 6 is connected with the drainage pipe body 1, and then the drainage pipe body 1 can be pulled up by the pulling equipment. After the pulling is completed, the filling can be simultaneously performed, so that the overall density of the soil layer is more uniform.

[0024] As Figure 1 and Figure 2 shown in the embodiment, the pulling sleeve 6 is provided with a pulling hole 9, and the pulling sleeve 6 is connected with the external pulling equipment through the pulling hole 9. Therefore, the pulling hole 9 can facilitate the connection of the external pulling equipment.

[0025] As Figures 1 to 4As shown, in this embodiment, a geotextile 10 is provided on the outer side of the pumping end of the drainage pipe 1. The geotextile 10 conforms to the outer edge of the drainage pipe 1, and the upper open end of the geotextile 10 is higher than the lower end of the sealing layer 3. Therefore, before inserting the drainage pipe 1 into the soil layer, the geotextile 10 is wrapped around it and inserted into the soil. The geotextile 10 can filter stones and fine particles, effectively preventing soil erosion and increasing pumping efficiency. The highest point of the geotextile 10 is higher than the sealing layer 3, effectively preventing stones and fine particles from blocking the drainage channel 4 or flowing out of the drainage channel 4. Furthermore, the geotextile 10 can be used as a landfill material remaining in the clay layer 13 and does not need to be removed.

[0026] like Figure 4 As shown, in this embodiment, the height of the end of the sealing layer 3 near the lower pressure cone 5 is lower than the lowest point of the fill layer 14 on the clay layer 13. Therefore, the sealing layer 3 serves as a sealing structure between the drainage channel 4 and the fill layer 14. When the drainage pipe 1 is inserted into the clay layer 13, the lowest point of the drainage channel 4 must exceed the fill layer 14. Through the pipe connectivity of the drainage channel 14, the collection point is placed in the clay layer 13 below the fill layer 14, achieving an isolation effect on the fill layer 14. This eliminates the need for additional sealing treatment, isolation walls, vacuum membranes, or other isolation measures, reducing numerous preliminary steps. Furthermore, it ensures that moisture in the clay layer 13 is discharged through the drainage channel 4 without affecting the fill layer 14, thus preventing settlement.

[0027] like Figure 3 and Figure 5 As shown, in this embodiment, a weight-reducing groove 11 is provided in the middle of the connecting end of the drain pipe body 1, and several connecting holes 7 are connected to the weight-reducing groove 11. Therefore, the weight-reducing groove 11 can reduce the weight of the drain pipe body 1, ensuring the strength of the drain pipe body 1 while making it easier to pull out.

[0028] Example 2:

[0029] like Figures 6 to 8 As shown, in this embodiment, the drain pipe body 1 is configured as a wide, elongated plate-like structure. A plurality of drainage grooves 2 are arrayed on both wide surfaces of the drain pipe body 1. The sealing layer 3 is disposed on both sides of the outer edge of the connecting end of the drain pipe body 1 and cooperates with the plurality of drainage grooves 2. A matching pull-out sleeve 6 is connected to the drain pipe body 1. Therefore, the drain pipe body 1 can be configured as an elongated plate-like structure with grooves cut into its wide surface. The sealing layer 3 and the plurality of drainage grooves 2 form a drainage channel, achieving a pumping effect.

[0030] like Figure 7As shown, in the embodiment, the drainage pipe body 1 is provided with a pressing slope 12 on both sides of the pressing end, and the two groups of pressing slopes 12 are matched with the clay layer 13.

[0031] The working principle of the utility model is: when the clay layer 13 is pumped, a plurality of groups of drainage pipe bodies 1 sleeved with the geotextile 10 are pressed into the clay layer 13 through a lower pressing machine array, ensuring that the drainage channel 4 is completely buried in the clay layer 13, the drainage channel 4 is isolated from the filling layer 14 and does not directly contact, a plurality of groups of drainage channels 4 on the upper end of the drainage pipe body 1 are connected with an external water pump through an external connecting module, after the arrangement of the drainage pipe body 1 is completed, the external water pump is started, a plurality of negative pressures are formed in the drainage channel 4, the contact surface between the plurality of drainage channels 4 and the clay layer 13 forms a negative pressure to make water flow out of the drainage channel 4, after the pumping operation is completed, lubricating solvent is input into the drainage channel 4 and the external water pump is disconnected, the pulling sleeve 6 is connected with the drainage pipe body 1, the drainage pipe body 1 is taken out through an external pulling device, and the hole is filled with filling materials, realizing efficient drainage of the clay layer.

[0032] Although the embodiments of the utility model are described in actual schemes, but does not constitute the limitation to the meaning of the utility model, for the person skilled in the art, according to the modification of the embodiments and the combination with other schemes in the present specification are obvious.

Claims

1. A drainage structure comprising a drainage pipe body (1), characterized by: The outer edge of the drain pipe body (1) is provided with a plurality of drainage grooves (2), a plurality of drainage grooves (2) are arranged parallel to the length extension direction of the drain pipe body (1), the outer edge of the connecting end of the drain pipe body (1) is provided with a sealing layer (3), the sealing layer (3) and a plurality of drainage grooves (2) form a drainage channel (4), the lower end of the drain pipe body (1) is matched with the clay layer (13) through the lower pressing cone block (5), a plurality of drainage channels (4) are matched with the clay layer (13) through a plurality of drainage grooves (2), and the connecting end of the drain pipe body (1) is connected with an external water pump through a pipeline.

2. A drainage structure according to claim 1, wherein: It also includes a pulling sleeve (6), the drain pipe body (1) is provided in a cylindrical structure, a plurality of connecting holes (7) are arranged at the connecting portion between adjacent two groups of drainage grooves (2), and the connecting end of the drain pipe body (1) is connected with the pulling sleeve (6) through a plurality of locking screws (8) and a plurality of connecting holes (7).

3. A drainage structure according to claim 2, wherein: The pulling sleeve (6) is provided with a pulling hole (9), and the pulling sleeve (6) is connected with external pulling equipment through the pulling hole (9).

4. The drainage structure of claim 1, wherein: The outer side of the water pumping end of the drain pipe body (1) is provided with a geotextile (10), the geotextile (10) is matched with the outer edge of the drain pipe body (1), and the opening height of the upper end of the geotextile (10) is higher than that of the lower end of the sealing layer (3).

5. The drainage structure of claim 1, wherein: The sealing layer (3) is close to one end of the lower pressing cone block (5), and the height of the sealing layer (3) is lower than the lowest point of the filling layer (14) on the clay layer (13).

6. The drainage structure of claim 2, wherein: The connecting end of the drain pipe body (1) is provided with a weight reduction groove (11), and a plurality of connecting holes (7) are in communication with the weight reduction groove (11).

7. The drainage structure of claim 1, wherein: The drain pipe body (1) is provided in a wide and long plate structure, a plurality of drainage grooves (2) are arranged on the wide surfaces of the two sides of the drain pipe body (1), the sealing layer (3) is arranged on the outer edge of the connecting end of the drain pipe body (1) and matched with a plurality of drainage grooves (2), and the pulling sleeve (6) is connected with the drain pipe body (1).

8. A drainage structure according to claim 7, wherein: The pressing end of the drain pipe body (1) is provided with a pressing inclined surface (12) on both sides, and the two groups of pressing inclined surfaces (12) are matched with the clay layer (13).

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