CN216238477U - Soft soil foundation porous deep air compression and drainage device - Google Patents
Soft soil foundation porous deep air compression and drainage device Download PDFInfo
- Publication number
- CN216238477U CN216238477U CN202122818003.4U CN202122818003U CN216238477U CN 216238477 U CN216238477 U CN 216238477U CN 202122818003 U CN202122818003 U CN 202122818003U CN 216238477 U CN216238477 U CN 216238477U
- Authority
- CN
- China
- Prior art keywords
- soft soil
- cavity body
- drainage
- soil foundation
- gas diffusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a porous deep air compressing and draining device of a soft soil foundation, which comprises an air compressing pipe and a draining pipe, wherein a draining cavity body and a gas diffusion cavity body are respectively embedded in the soft soil foundation, and the draining cavity body is positioned around the gas diffusion cavity body; the gas diffusion cavity is connected with a gas pressing pipe, and the gas pressing pipe extends out of the ground surface along the vertical direction of the soft soil foundation and is communicated with an inflator pump; the drainage cavity body is connected with a drainage pipe, one end of the drainage pipe extends into the bottom of the drainage cavity body, and the other end of the drainage pipe extends out of the ground surface along the vertical direction of the soft soil foundation; through the setting of above drainage device and bury to soft soil foundation in, can realize the soft soil foundation deep drainage to shorten deep soft soil foundation drainage consolidation time, in order to reach the saturation that reduces the deep soil body, reduce soft soil foundation's post-construction settlement deformation, and satisfy the building and bear on the large tracts of land of the soil body and realize deep soft soil consolidation processing.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering, and particularly relates to a soft soil foundation porous deep air compression and drainage device
Background
The soft soil foundation has the characteristics of high natural water content, large pore ratio, strong compressibility, low permeability, poor bearing capacity and the like. When a building is built on a soft soil foundation, the foundation is easy to excessively subside due to engineering load, the duration of the consolidation settlement of the foundation is very long due to the low permeability of the soft soil, particularly, under the engineering condition that the thickness of a soil layer of the soft soil foundation is large, the natural drainage consolidation time can last for decades to hundreds of years due to the long drainage path of underground water flowing out of the ground surface in the deep soft soil foundation, and the normal use of the engineering is often influenced by the excessive post-construction settlement, even engineering disasters are generated. The currently adopted loading preloading method, vacuum preloading method and the like have good drainage consolidation effect on shallow soft soil, but have poor drainage consolidation effect on deep soft soil, long time for realizing deep soft soil drainage consolidation treatment requirement and high engineering cost. The drainage consolidation of the deep soft soil layer becomes the difficulty of the drainage consolidation treatment of the soft soil foundation, particularly the drainage consolidation of the deep soft soil layer is particularly important for large-area bearing of a building on the soil body, and the existing deep soft soil consolidation treatment is adopted, so that the time is too long, and the engineering cost is too high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a porous deep-part air-compressing and water-draining device of a soft soil foundation, which is suitable for large-area bearing of a soil body by a building, and is used for draining deep underground water of the soft soil foundation to achieve the purposes of accelerating drainage and consolidation of deep soft soil and reducing settlement and deformation of the foundation after construction.
The utility model aims to complete the technical scheme that the soft soil foundation porous deep air compression and drainage device comprises an air compression pipe and a drainage pipe, wherein drainage cavity bodies and gas diffusion cavity bodies are respectively embedded in the soft soil foundation, at least two drainage cavity bodies are arranged and are arranged at the periphery of the gas diffusion cavity bodies, and the bottom of the gas diffusion cavity bodies in the soft soil foundation is lower than the bottom of the drainage cavity bodies in the soft soil foundation; a connecting port is formed in the upper end face of the gas diffusion cavity body, the gas compression pipe is connected with the connecting port, and the gas compression pipe extends out of the ground surface along the vertical direction of the soft soil foundation and is communicated with an inflator pump; a connecting port is formed in the upper end face of the drainage cavity body, the drainage pipe is connected through the connecting port, one end of the drainage pipe extends into the bottom of the drainage cavity body, and the other end of the drainage pipe extends out of the ground surface along the vertical direction of the soft soil foundation; through the setting of above drainage device and bury to soft soil foundation in, can realize the soft soil foundation deep drainage to shorten deep soft soil foundation drainage consolidation time, in order to reach the saturation that reduces the deep soil body, reduce soft soil foundation's post-construction settlement deformation, and satisfy the building and bear on the large tracts of land of the soil body and realize deep soft soil consolidation processing.
Preferably, the outer diameter of the gas diffusion cavity body is greater than or equal to the outer diameter of the drainage cavity body, and the vertical distance between the bottom of the gas diffusion cavity body in the soft soil foundation and the bottom of the drainage cavity body in the soft soil foundation is 1-2 m; the external diameter difference between the two cavities enables the air pressure in the gas diffusion cavity to meet the seepage pressure for driving the soil body, and the air pressure can also meet the pressure in the drainage cavity through seepage pressure transmission, and the distance difference between the two cavities can meet the requirement that underground water in the soil body deep below the cavities can be fully infiltrated into the drainage cavity, so that the soil body can be supported in a large area to realize deep soft soil consolidation treatment.
Preferably, four drainage cavity bodies are arranged, surround the radial periphery of the gas diffusion cavity body and are distributed at equal intervals; therefore, the deep soft soil consolidation area is enlarged, and the drainage of the soil body with the effective area is more uniform in the soft soil consolidation process.
Preferably, the vertical distance between the gas diffusion cavity body and the ground surface of the soft soil foundation is more than 10m, and the transverse distance between the gas diffusion cavity body and the drainage cavity body is 3-5 m; so more be favorable to compressing air to the gas diffusion cavity internal, and more be favorable to the drainage cavity body to the earth's surface drainage outward to accessible spacing adjustment, the time control requirement of adaptable drainage consolidation and the soft soil consolidation that adapts to the different degree of depth and area requirement more can adapt to the building of different areas and bear the weight of in the large tracts of land of the soil body and realize deep soft soil consolidation processing.
Preferably, the height of the water drainage cavity body is greater than that of the gas diffusion cavity body; because the gas diffusion cavity body is buried to a deeper depth, the design of the height difference can promote the soil body seepage between the upper part of the gas diffusion cavity body and the periphery of the drainage cavity body, and the time required by deep soft soil consolidation treatment can be further shortened.
Preferably, the gas diffusion cavity body comprises a rigid support and geotextile, the rigid support is a cylindrical body, the geotextile is wrapped outside the rigid support, and the rigid support is vertically embedded along the soft soil foundation; through the arrangement of the structure, the rigidity of the gas diffusion cavity body in the soft soil foundation can be ensured, and meanwhile, the gas diffusion cavity has gas permeability and can prevent the soil body from entering the cavity.
Preferably, the drainage cavity is formed by surrounding and limiting a permeable pipe and is vertically embedded along a soft soil foundation; the drainage cavity has water permeability and can prevent soil from entering the cavity.
Drawings
Fig. 1 is a schematic structural view of the soft soil foundation porous deep air compressing and water discharging device.
Fig. 2 is a schematic view of the sectional structure a-a of fig. 1.
Fig. 3 is a schematic view of the gas diffusion cavity body structure of the present invention.
The reference numbers in the drawings are respectively: 1. pressing the air pipe; 2. a drain pipe; 3. a drainage cavity body; 4. a gas diffusion cavity body; 5. an inflator pump; 6. soft soil foundation; 41. a rigid support; 42. and (4) geotextile.
Detailed Description
The utility model will be described in detail below with reference to the following drawings: as shown in the attached drawings 1 and 2, the utility model comprises an air pressing pipe 1 and a water discharging pipe 2, a water discharging cavity body 3 and a gas diffusion cavity body 4 are respectively embedded in a soft soil foundation 6, four water discharging cavity bodies 3 are arranged and surround the radial periphery of the gas diffusion cavity body 4 and are distributed at equal intervals, and the bottom of the gas diffusion cavity body 4 in the soft soil foundation 6 is lower than the bottom of the water discharging cavity body 3 in the soft soil foundation 6, so that the deep soft soil consolidation treatment can be realized on the large-area bearing of a soil body by a building; a connecting port is formed in the upper end face of the gas diffusion cavity body 4, a gas pressing pipe 1 is welded through the connecting port, and the gas pressing pipe 1 extends out of the ground along the vertical direction of the soft soil foundation 6 and is communicated with an inflator pump 5; a connecting port is formed in the upper end face of the drainage cavity body 3, the drainage pipe 2 is welded through the connecting port, one end of the drainage pipe 2 extends into the bottom of the drainage cavity body 3, so that seepage water from a soil body in the drainage cavity body 3 can be discharged to the outside of the earth surface through the drainage pipe 2 as far as possible, unnecessary loss of drainage driving pressure can be reduced, and the other end of the drainage cavity body extends out of the earth surface along the vertical direction of the soft soil foundation 6; the drainage driving pressure of the drainage cavity body 3 is derived from the transmission of the air pressure driving seepage pressure. Vertical among the above-mentioned indicates with the surface of the earth vertically direction for compress air and drainage efficiency when compressing air and drainage cavity 3 is to drain off water to drain pipe 2 through compressing air pipe 1 in to gas diffusion cavity 4 is more high-efficient like this, and the route of compressing air and drainage shortens greatly, more is favorable to shortening deep soft soil foundation drainage consolidation time.
The outer diameter of the gas diffusion cavity body 4 is larger than or equal to the outer diameter of the drainage cavity body 3, so that the air pressure in the gas diffusion cavity body can meet the seepage pressure of a driving soil body, and can also meet the pressure in the drainage cavity body through seepage pressure transmission; the vertical distance between the bottom of the gas diffusion cavity body 4 in the soft soil foundation 6 and the bottom of the drainage cavity body 3 in the soft soil foundation 6 is 1.5 m; the underground water in the soil body at the deep part below the cavity can be fully infiltrated into the drainage cavity, so that the soil body can be supported in a large area to realize deep soft soil consolidation treatment.
The principle that gas and liquid always flow along the maximum direction of pressure gradient is utilized, and the pressure gradient is in direct proportion to the pressure difference between two points and in inverse proportion to the distance between the two points; the vertical distance between the gas diffusion cavity body 4 and the ground surface of the soft soil foundation 6 is 12m, and the transverse distance between the gas diffusion cavity body 4 and the drainage cavity body 3 is 4 m; the interval between the drainage cavity body 3 and the gas diffusion cavity body 4 is big more, and the time of drainage can be longer more, nevertheless according to actual demand, it is great and the degree of depth is darker if the great and degree of depth of area of deep weak soil drainage consolidation, so can only increase the interval between the drainage cavity body 3 and the gas diffusion cavity body 4, also increase the interval between the ground surface of gas diffusion cavity body 4 and soft soil foundation 6 simultaneously, can adapt to the different soil body areas and bear and realize deep soft soil consolidation processing.
The height of the drainage cavity body 3 is greater than that of the gas diffusion cavity body 4, the height ratio between the two is generally 1 to 2, the design of the height difference can promote the soil body seepage between the upper part of the gas diffusion cavity body and the periphery of the drainage cavity body, and the time required by deep soft soil consolidation treatment can be further shortened.
As shown in fig. 3, the gas diffusion cavity 4 includes a rigid support 41 and a geotextile 42, the rigid support 41 is a cylindrical body, and the geotextile 42 is wrapped outside and vertically embedded along the soft soil foundation 6; the drainage cavity body 3 is defined by a permeable pipe and is vertically embedded along the soft soil foundation 6; vertical among the above-mentioned bury to establish to the axle heart yearn of two cavitys perpendicular with the ground surface, more compact and the efficiency of drainage is more high-efficient in the arrangement in space, satisfies the building simultaneously and realizes deep weak soil consolidation processing to bearing in the large tracts of land of the soil body.
A construction method of a soft soil foundation porous deep air compression and drainage device comprises the following steps:
s1, drilling a deep hole with the depth of 12m for embedding the gas diffusion cavity body 4 on the soft soil foundation 6, drilling at least two deep holes for embedding the drainage cavity body 3 at 4m around the transverse direction of the deep hole, then placing the gas diffusion cavity body 4 with the air pressing pipe 1 and the drainage cavity body 3 with the drainage pipe 2 into the bottom of each deep hole, and filling soil into each deep hole until the soil is flush with the ground surface of the soft soil foundation 6;
s2, pressing air into the air pressing pipe 1 through the air pump 5 to enable the air diffusion cavity body 4 to form high air pressure, keeping the air pressure in the air diffusion cavity body 4 to be larger than the pore water pressure of the surrounding soil body and smaller than the self-weight pressure of the soil body, extruding and diffusing the air in the air diffusion cavity body 4 to the surrounding soil body, and driving the underground water in the soil body to flow along the direction of maximum pressure gradient;
s3, in the process of filling air in the air diffusion cavity body 4, the seepage pressure of the air pressure driven soil body can be transmitted to the surrounding drainage cavity body 3 and causes the pressure in the drainage cavity body 3 to rise, and when the pressure water head in the drainage cavity body 3 reaches the ground surface, the underground water permeating into the drainage cavity body 3 can flow out of the ground surface through the drainage pipe 2.
In the steps of S2 and S3, under the condition that the air compressing pipe 1 is pressurized, the gas diffusion cavity body 4 is in a high-pressure state, and underground water of soil around the gas diffusion cavity body is driven to flow to the drainage cavity body 3 with relatively low pressure and short distance by utilizing the high-pressure condition of the gas diffusion cavity body 4, and is drained to the ground surface through the drainage pipe 2; the drainage drive pressure of drainage cavity 3 derives from the transmission of atmospheric pressure drive seepage pressure in the gas diffusion cavity body 4, and when the lateral distance between drainage cavity body 3 and the gas diffusion cavity body 4 was near, the calm air in the gas diffusion cavity body 4 this moment enters into drainage cavity body 3 as drainage drive pressure more high-efficiently through the soil body, can further improve drainage efficiency, and reduces the drainage consolidation's of deep weak soil time.
The present invention is not limited to the above embodiments, and any changes in the shape or material composition, or any changes in the structural design provided by the present invention, are all modifications of the present invention, and should be considered to be within the scope of the present invention.
Claims (7)
1. The utility model provides a soft soil foundation porous deep drainage device that calms anger, includes trachea (1) and drain pipe (2), its characterized in that: a drainage cavity body (3) and a gas diffusion cavity body (4) are respectively embedded in the soft soil foundation (6), at least two drainage cavity bodies (3) are arranged at the periphery of the gas diffusion cavity body (4), and the bottom of the gas diffusion cavity body (4) in the soft soil foundation (6) is lower than the bottom of the drainage cavity body (3) in the soft soil foundation (6); a connecting port is formed in the upper end face of the gas diffusion cavity body (4), the gas compression pipe (1) is connected through the connecting port, and the gas compression pipe (1) extends out of the ground along the vertical direction of the soft soil foundation (6) and is communicated with the inflator pump (5); the connector has been seted up to the up end of drainage cavity body (3), and through the connector connection has drain pipe (2), just the one end of drain pipe (2) stretch into to the bottom of drainage cavity body (3), the other end is along the vertical of soft soil foundation (6) and stretch out to outside the earth's surface.
2. The soft soil foundation porous deep part air compression and drainage device of claim 1, characterized in that: the external diameter of the gas diffusion cavity body (4) is greater than or equal to the external diameter of the drainage cavity body (3), the bottom of the gas diffusion cavity body (4) in the soft soil foundation (6) and the vertical distance between the bottoms of the drainage cavity body (3) in the soft soil foundation (6) are 1-2 m.
3. The soft soil foundation porous deep part pneumatic-hydraulic drainage device according to claim 1 or 2, characterized in that: the four drainage cavity bodies (3) are arranged and surround the radial periphery of the gas diffusion cavity body (4) and are distributed at equal intervals.
4. The soft soil foundation porous deep part pneumatic-hydraulic drainage device of claim 3, characterized in that: the vertical interval between the gas diffusion cavity body (4) and the ground surface of soft soil foundation (6) is greater than 10m, just the gas diffusion cavity body (4) with horizontal interval between the drainage cavity body (3) is 3 to 5 m.
5. The soft soil foundation porous deep part pneumatic-hydraulic drainage device of claim 4, characterized in that: the height of the drainage cavity body (3) is greater than that of the gas diffusion cavity body (4).
6. The soft soil foundation porous deep part air compression and drainage device of claim 1, characterized in that: the gas diffusion cavity body (4) comprises a rigid support (41) and geotextile (42), wherein the rigid support (41) is a cylindrical body and wraps the geotextile (42) at the outer side, and the geotextile is vertically embedded along the soft soil foundation (6).
7. The soft soil foundation porous deep part air compression and drainage device of claim 1, characterized in that: the drainage cavity body (3) is formed by surrounding and limiting a permeable pipe and is vertically embedded along a soft soil foundation (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122818003.4U CN216238477U (en) | 2021-11-17 | 2021-11-17 | Soft soil foundation porous deep air compression and drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122818003.4U CN216238477U (en) | 2021-11-17 | 2021-11-17 | Soft soil foundation porous deep air compression and drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216238477U true CN216238477U (en) | 2022-04-08 |
Family
ID=80945240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122818003.4U Active CN216238477U (en) | 2021-11-17 | 2021-11-17 | Soft soil foundation porous deep air compression and drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216238477U (en) |
-
2021
- 2021-11-17 CN CN202122818003.4U patent/CN216238477U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101575849B (en) | Soft soil foundation air-water displacement and consolidation method | |
| CN210719879U (en) | Test device for preparing rock-like transparent material by using vacuum consolidation method | |
| CN104631428A (en) | Novel partial deep layer pressurizing type vacuum preloading soft soil foundation processing method | |
| CN101235634A (en) | Bidirectional vacuum prepressing blowing filling soft soil foundation treatment method | |
| CN114108597A (en) | Vacuum drainage grouting method | |
| CN101597898B (en) | Rigid drainage pile and construction method thereof | |
| CN111827248A (en) | System and method for air bag expansion pressurization and vacuum-electroosmosis composite dewatering and dewatering in hole | |
| CN216108436U (en) | Circulation adds pressure release precipitation system and ground treatment system thereof | |
| CN101503875B (en) | Vacuum drainage sand wick soft ground processing method | |
| CN216238477U (en) | Soft soil foundation porous deep air compression and drainage device | |
| CN201214787Y (en) | Rigid water drain pile | |
| CN113279388A (en) | Foundation treatment system adopting combination of cyclic pressurization, pressure relief and dewatering grouting and construction method thereof | |
| CN105672244A (en) | Drainage device and system for strengthening soft clay foundation and treatment method | |
| CN114370047A (en) | Soft soil foundation porous deep air compression and drainage device and construction method | |
| CN216238478U (en) | Soft soil foundation haplopore deep drainage device that calms anger | |
| CN211773581U (en) | Precast concrete drainage pile | |
| CN105369797A (en) | Vacuum radiation solidification method for collapsible loess | |
| CN201232181Y (en) | Permeable structure of rigid drainage pile | |
| CN114164820A (en) | Soft soil foundation single-hole deep air compression and drainage device and construction method | |
| CN111691442A (en) | Foundation pit surrounding structure in foundation and manufacturing method thereof | |
| CN104110024A (en) | Drainage consolidation method for reinforcement treatment of hydraulic filling soft clay | |
| CN108118684B (en) | Beach reclamation dredger fill silt sand inclusion layer foundation reinforcing structure and construction method | |
| CN206815315U (en) | The fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground | |
| CN202023185U (en) | Concrete tubular pile | |
| CN201347549Y (en) | Non-watertight improved structure of rigid drainage pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |