CN209816935U

CN209816935U - Anti-floating structure for drainage of underground water

Info

Publication number: CN209816935U
Application number: CN201920151548.4U
Authority: CN
Inventors: 洪磊; 张乐勇; 黄殿能
Original assignee: SIHUI CONSTRUCTION GROUP CO Ltd
Current assignee: SIHUI CONSTRUCTION GROUP CO Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2019-12-20
Anticipated expiration: 2029-01-28

Abstract

The utility model relates to a floating structure is prevented in groundwater drainage belongs to building drainage technical field, has the advantage that reduces the surface water and permeate to basement bottom plate below. The underground water-resistant back filling device comprises a basement and an outdoor back filling soil layer and is characterized in that a water-resistant layer is arranged above a basement bottom plate and around the outer wall of the basement in the outdoor back filling soil layer, the edge of the upper surface of the water-resistant layer is provided with a drain pipe, the drain pipe is horizontally provided with a drain hole towards the center of the water-resistant layer, the outer wall of the drain pipe is communicated with a drainage pipe, and one end, far away from the drain pipe, of the drainage pipe is communicated with.

Description

Anti-floating structure for drainage of underground water

Technical Field

The utility model relates to a building drainage technical field especially relates to a floating structure is prevented in groundwater drainage.

Background

In the design of underground construction engineering, particularly basements, sloping field buildings or high-rise buildings are often encountered, the basements of the underground construction engineering, particularly the basements, are sometimes fully buried basements and sometimes partially open basements, and the elevation of the bottom plate of the basements is generally higher than that of municipal rainwater drainage pipes. However, in the construction process or during the use of the basement, surface water or rainwater is collected in a short time, so that a local water head is high, the seepage drainage through the soil body needs a long time or cannot be drained, the basement needs to take anti-floating measures, and an anti-pulling anchor rod or an anti-pulling pile is arranged to prevent a bottom plate from cracking and seeping water or the basement is locally floated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a groundwater drainage prevents floating structure has the advantage that reduces the surface water and permeates to basement bottom plate below.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a groundwater drainage anti-floating structure, includes basement and outdoor backfill soil layer, it is provided with the water blocking layer around the basement outer wall to lie in basement bottom plate top in the outdoor backfill soil layer, water blocking layer upper surface edge is around being equipped with the drain pipe, has seted up the wash port towards water blocking layer center level on the drain pipe, and drain pipe outer wall intercommunication has the drainage tube, the one end intercommunication that the drain pipe was kept away from to the drainage tube has the municipal drainage pipe that highly is less than the drain pipe.

Furthermore, the outer of the drain pipe is coated with a sand prevention layer.

Furthermore, the sand control layer is made of geotextile.

Further, the outer surrounding drain pipe of the drain pipe is filled with a gravel layer.

Furthermore, the thickness of the gravel layer is 250-350 mm.

Furthermore, the drain pipe is arranged according to the slope of 0.5% -1% from the highest point to the lowest point, and the drainage pipe is communicated with the lowest point of the drain pipe.

Further, the inner diameter of the drain pipe is 150-250 mm.

Furthermore, the edge of the waterproof layer is more than 5m away from the outer wall of the basement.

To sum up, the utility model discloses following beneficial effect has:

the water blocking layer is arranged above the basement bottom plate, water seeping into the outdoor backfill soil layer around the basement is blocked, and the water blocked by the water blocking layer is drained to the municipal drainage pipe through the drainage pipe, so that surface water flowing to the lower side of the basement is reduced, and the probability of occurrence of the condition that the basement bottom plate is cracked and seeped or partially floats is reduced.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic view of the structure of the drain pipe.

Reference numerals: 1. a basement; 2. an outdoor backfill soil layer; 3. a water resistant layer; 4. a drain pipe; 41. a drain hole; 5. a drainage tube; 6. municipal drainage pipes; 7. a sand control layer; 8. a gravel layer.

Detailed Description

The technical solution of the embodiment of the present invention will be described below with reference to the accompanying drawings.

An underground water drainage anti-floating structure is shown in figure 1 and comprises a basement 1 and an outdoor backfill soil layer 2. The edge that lies in 1 bottom plate top of basement around 1 outer wall of basement in outdoor backfill soil layer 2 is provided with water blocking layer 3 apart from 1 outer wall of basement more than 5m, and in this embodiment, water blocking layer 3 is made for two-sided compound waterproofing membrane of fibre. The edge of the upper surface of the water-resistant layer 3 is wound with a drain pipe 4 with the inner diameter of 150-250 mm, a drain hole 41 (see fig. 3) is horizontally formed in the drain pipe 4 towards the center of the water-resistant layer 3, the outer wall of the drain pipe 4 is communicated with a drain pipe 5, and one end, far away from the drain pipe 4, of the drain pipe 5 is communicated with a municipal drain pipe 6 with the height lower than that of the drain pipe 4.

As shown in fig. 2, in order to prevent soil from blocking the drain hole 41 of the drain pipe 4, the drain pipe 4 is externally coated with a sand-proof layer 7, and in the present embodiment, the sand-proof layer 7 is geotextile. The outside of the drain pipe 4 is filled with a gravel layer 8, the particle size of gravel is large, the gravel is not easy to enter the drain hole 41, and soil is blocked from the drain hole 41, so that the soil is prevented from entering the drain hole 41. The thickness of the gravel layer 8 is 250 to 350 mm.

In order to enable water on the water-blocking layer 3 to be easily drained to the municipal drainage pipe 6 through the drainage pipe 4, the drainage pipe 4 is arranged at a gradient of 0.5% -1% from the highest point to the lowest point, and the drainage pipe 5 is communicated with the lowest point of the drainage pipe 4.

Claims

1. The utility model provides an underground water drainage anti-floating structure, includes basement (1) and outdoor backfill soil layer (2), its characterized in that, it is provided with water blocking layer (3) around basement (1) outer wall to lie in basement (1) bottom plate top in outdoor backfill soil layer (2), water blocking layer (3) upper surface edge is around being equipped with drain pipe (4), goes towards water blocking layer (3) central level on drain pipe (4) and has seted up wash port (41), and drain pipe (4) outer wall intercommunication has drainage tube (5), the one end intercommunication that drain pipe (4) were kept away from in drainage tube (5) has highly to be less than municipal drainage pipe (6) of drain pipe (4).

2. An underground water drainage anti-floating structure according to claim 1, characterized in that the drain pipe (4) is externally coated with a sand control layer (7).

3. An underground water drainage anti-floating structure according to claim 2, wherein the sand control layer (7) is geotextile.

4. A groundwater drainage anti-floating structure according to claim 3, characterized in that the drain pipe (4) is surrounded by a layer of gravel (8) around the drain pipe (4).

5. An underground water drainage anti-floating structure according to claim 4, wherein the gravel layer (8) has a thickness of 250-350 mm.

6. An underground water drainage anti-floating structure according to claim 1, wherein the drainage pipe (4) is arranged at a slope of 0.5-1% from the highest point to the lowest point, and the drainage tube (5) is communicated with the lowest point of the drainage pipe (4).

7. An underground water drainage anti-floating structure according to claim 1, wherein the inside diameter of the drainage pipe (4) is 150-250 mm.

8. An underground water drainage anti-floating structure according to claim 1, characterized in that the edge of the water resistant layer (3) is more than 5m from the outer wall of the basement (1).