CN220377246U - Vacuum preloading drainage consolidation system - Google Patents
Vacuum preloading drainage consolidation system Download PDFInfo
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- CN220377246U CN220377246U CN202321445096.3U CN202321445096U CN220377246U CN 220377246 U CN220377246 U CN 220377246U CN 202321445096 U CN202321445096 U CN 202321445096U CN 220377246 U CN220377246 U CN 220377246U
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- silt
- vacuum
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- 238000007596 consolidation process Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 210000002478 hand joint Anatomy 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 24
- 239000000463 material Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 71
- 238000005086 pumping Methods 0.000 description 17
- 239000002689 soil Substances 0.000 description 14
- 239000010802 sludge Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 8
- 230000005484 gravity Effects 0.000 description 3
- 239000004746 geotextile Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a vacuum pre-pressing consolidation system, which comprises a silt pool, a drain board arranged in the silt pool and a drain system connected with the drain board, wherein the drain system is connected with a vacuum pump, and a sealing film and a stacking layer are arranged above the silt pool, and the vacuum pre-pressing consolidation system is characterized in that: the water storage layer is arranged above the stacking layer, waterproof films are arranged at the bottom and around the water storage layer, and a water outlet of the drainage system is arranged on the water storage layer. The utility model is provided with the stacking layer and the vacuum drainage system, and the water storage layer is arranged above the stacking layer, so that the water drained by vacuum drainage is drained into the water storage layer, the material of the stacking layer is saved, and meanwhile, when the later vacuum drainage effect is reduced, the weight of the water storage layer is gradually increased, so that the stacking pressure is increased, and the system is beneficial to continue to drain consolidation treatment in the later stage.
Description
Technical Field
The utility model relates to a vacuum preloading drainage consolidation system.
Background
The vacuum preloading consolidation method is a common method for consolidation treatment of blow-filled soft soil or ultra-soft soil, and the method specifically comprises the following steps: excavating a silt pool, blowing and filling silt into the pool, meanwhile, arranging a drain board and a drain system in the pool, wherein the drain system is connected with a vacuum pump, after the silt is blown and filled to the elevation, paving a sand filtering layer and a sealing film on the surface of the silt, and stacking the sealing film. The vacuum preloading consolidation method can effectively improve the effect of vacuum preloading treatment through the preloading gravity and vacuum pumping. In the above method, the piling is usually carried from other places, and is inconvenient, and the Chinese patent with publication number of CN114673137A discloses a vacuum piling water preloading method, which solves the problem of inconvenient transportation of piling materials by using cofferdam water injection as the piling, and has the defects that the specific gravity of water is low, the soil commonly used in the prior art is used as the piling, the specific gravity of the soil is usually 2.4-2.7, namely, the water with the same weight is used as the piling, and the volume of the water is more than 2 times of that of other piling materials.
Disclosure of Invention
The utility model aims to provide a soft soil consolidation system capable of reducing the stacking materials and having a good soft soil treatment effect.
In this regard, the vacuum preloading drainage consolidation system comprises a silt basin, a drainage plate arranged in the silt basin and a drainage system connected with the drainage plate, wherein the drainage system is connected with a vacuum pump, a sealing film and a stacking layer are arranged above the silt basin, a water storage layer is arranged above the stacking layer, waterproof films are arranged at the bottom and the periphery of the water storage layer, and a water outlet of the drainage system is arranged on the water storage layer.
Further, the silt basin includes the silt layer, and the top in silt basin is equipped with first filter layer, first filter layer includes geotechnique's cloth and sand bed course, and the drainage board is spread to the top of sand bed course, and the drainage board is connected with drainage system, the top of drainage board is equipped with the sealing membrane.
Further, the bottom of silt layer is equipped with the second filtering layer, the second filtering layer is including establishing geotechnique's cloth and sand bed course in silt layer below, and the drain bar is laid in the below of sand bed course or the sand bed course, and the drain bar is connected with drainage system.
Further, the drain board arranged in the silt layer is a vertical drain board, the vertical drain board is connected with a transverse drain pipe through a hand joint, and the transverse drain pipe is connected into a drain system.
The drain board arranged in the silt layer can also be a horizontal drain board.
The horizontal drainage plate comprises the following modes:
the drainage system comprises a vertical drainage pipe, wherein the vertical drainage pipe is arranged on one side of a horizontal drainage plate, and the horizontal drainage plate is connected with the vertical drainage pipe through a joint on one side close to the drainage plate;
the vertical drain pipes are respectively arranged at two sides of the horizontal drain boards, any one horizontal drain board is connected with the vertical drain pipes only through one end, and the number of the horizontal drain boards connected with the vertical drain pipes at two sides of the horizontal drain board is the same; preferably, two adjacent horizontal drain plates distributed vertically are connected with vertical drain pipes on different sides;
the vertical drain pipes are respectively arranged on two sides of the horizontal drain board, two ends of the horizontal drain board are connected with the vertical drain pipes, the vertical drain pipes on the two sides are respectively provided with independent vacuum pumps, and the vacuum pumps connected with the vertical drain pipes on the two sides are alternately started to pump and drain.
The beneficial effects of the utility model are as follows:
(1) The utility model is provided with a common stacking layer, a water storage layer is arranged above the stacking layer, and a water outlet of the drainage system is arranged in the water storage layer. In the earlier stage of treatment, the moisture content in the silt layer is high, and the drain bar permeability is good, and vacuum drainage is effectual, jointly piles up under the effect of year for the moisture in the silt layer can discharge fast. After a part of water in the silt layer is discharged, the silt layer is settled and the soil body is solidified, at the stage, the moisture content in the soil body is reduced, the soil body becomes compact, meanwhile, particles in the silt at the earlier stage enter the drain plate to reduce the permeability of the drain plate, the vacuum pumping effect is reduced, at the same time, the settlement of the silt layer reduces the height of the silt layer, so that the available volume of the water storage layer is increased, the process can be regarded as transferring the moisture in the silt layer into the water storage layer, the actual lowered height is basically equivalent to the newly increased available height of the water storage layer, and the water is transferred into the water storage layer to form an increasing stacking effect, so that the stacking effect is more obvious in the solidification effect of the soil at the later stage, the reduction of the vacuum pumping effect is compensated, the volume of the whole stacking layer is not too large while the common stacking material is reduced, and the processing result is good.
(2) According to the utility model, the filter layers are arranged above and below the silt layer, geotextile and sand cushion layers are arranged in the filter layers, under the effects of stacking and vacuum pumping, the silt layer is extruded, one part of water in the silt layer is directly pumped and discharged, the other part of water passes through the filter layers or forms accumulated water in the filter layers, and the water can be led away bidirectionally by arranging the drain boards in the upper filter layer and the lower filter layer, so that the treatment efficiency is improved. When the vacuum pumping is performed in the later stage, the drain plates are blocked, so that the later treatment effect is poor, and the later stage of the utility model is characterized in that the water is transferred into the water storage layer to form new stacking load, the higher the stacking load in the later stage is, the water in the soil layer still permeates into the filter layer under the stacking effect, and the water can be pumped away through the drain plates arranged on the filter layer, so that the later treatment effect is improved.
(3) The vacuum degree of the vacuum pumping is decreased along the length direction of the drainage plate, the vacuum degree is high, the pumping effect is good, the more the pumping and draining parts around the vacuum pumping are, the relative sedimentation speed is higher, the uneven pumping and draining can cause uneven sedimentation, the drainage plate is bent and deformed to influence the pumping and draining effect.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment 1 embodying the present utility model;
FIG. 2 is a schematic view of a drain board layout of embodiment 2;
FIG. 3 is a schematic view of a drain board layout of embodiment 3;
FIG. 4 is a schematic view of a drain board layout of embodiment 4;
fig. 5 is a schematic view of the drainage plate layout of embodiment 5.
Reference numerals illustrate: 1. a silt pool; 2. a drain plate; 201. a vertical drain plate; 202. a horizontal drain plate; 3. a drain pipe; 4. geotextile; 5. a first filter layer; 6. a sealing film; 7. stacking layers; 8. a waterproof membrane; 9. a water storage layer; 10. a water outlet; 11. and a second filter layer.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1, the vacuum preloading drainage consolidation system of the utility model comprises a sludge pond 1, wherein sludge is dredged in the sludge pond 1, when the height of the dredged sludge reaches 40 cm to 60cm, a drainage plate 2 is arranged, a hand joint of the drainage plate 2 is connected with a drainage pipe 3 of a drainage system, the dredged sludge is continuously dredged to the elevation, geotechnical cloth 4 and a sand cushion with a certain thickness are paved on the surface of the sludge as filtering layers, a sealing film 6 is paved above the sand cushion, a piling layer 7 is arranged above the sealing film 6, the main material for piling can use soil, a waterproof layer formed by a waterproof film 8 is paved above the piling layer 7, a water storage layer 9 is arranged above the piling layer 7, and a waterproof film 8 can be arranged around the water storage layer 9, and of course, the water storage layer 9 can also be replaced by a storage tank with the same bottom area as the sludge pond 1, or a plurality of box-type water storage tanks, and a water outlet 10 of the drainage system connected with a vacuum pump is arranged in the water storage layer 9. In this embodiment, the sealing film 6, the waterproof film 8 and the laying method thereof are all the prior art, and a sealing groove may be dug to improve the sealing or waterproof effect.
In the above embodiment, referring to fig. 1, a first filter layer 5 including geotechnical cloth 4 and a sand cushion is provided above a silt basin 1, a drain plate 2 is laid above the sand cushion, the drain plate 2 is connected with a drain system, a sealing film 6 is provided above the drain plate 2, a second filter layer 11 is further provided at the bottom of the silt basin, the second filter layer 11 includes geotechnical cloth 4 and a sand cushion provided below the silt basin, the drain plate 2 is laid below the sand cushion or in the sand cushion, and the drain plate 2 is connected with the drain system. The embodiment is mainly used for pumping out water seeping from the filter layer due to the piling effect. The position with smaller vacuum degree between the two drain plates 2, and when the drainage efficiency of the drain plate 2 is reduced and the blockage occurs at the later stage of vacuum drainage, the drain plate 2 can be continuously and bidirectionally drained from the upper direction and the lower direction of the silt layer by utilizing the action of piling.
Fig. 1 shows a specific embodiment 1 of the drainage plate 2 layout in a silt layer, the drainage plate 2 arranged in the silt layer is a vertical drainage plate 201, the vertical drainage plate 201 is connected with a transverse drainage pipe 3 through a hand joint, and the transverse drainage pipe 3 is connected into a drainage system.
Due to the sedimentation effect of the sludge, the height of the sludge layer is obviously reduced at the middle and later stages of the consolidation treatment of the soft soil, the distance between two ends of the vertical drainage plate 201 arranged in the sludge layer is reduced along with the sedimentation of the soil, the vertical drainage plate 201 is easy to bend and deform, the vacuum degree transmission is affected, the middle and later stage drainage effect is poor, and referring to fig. 2, in the embodiment 2, the horizontal drainage plate 202 and the vertical drainage pipe 3 are adopted, the vertical drainage pipe 3 is only arranged at the same side of the horizontal drainage plate 202, and the horizontal drainage plate 202 is connected with the vertical drainage pipe 3 through a joint at one side close to the drainage plate 2.
Since the vacuum degree of the drain plate 2 decreases along the length direction of the horizontal drain plate 202, the vacuum is smaller as the vacuum is further from the vacuum pump, and the pumping effect is worse, in the above-described embodiment 2, after a period of pumping, the entire silt layer is lowered, but because the silt on the side close to the vertical drain pipe 3 is settled faster, the horizontal drain plate 202 is changed from parallel to each other to radial, and the deformation of the horizontal drain plate 202 affects the entire pumping effect. In addition, the overall consolidation effect is also affected by the tendency of the water load on the reservoir 9 due to uneven drop in the silt layer. Referring to fig. 3, in embodiment 3, the vertical drain pipes 3 are respectively disposed on two sides of the horizontal drain boards 202, and any one horizontal drain board 202 is connected to the vertical drain pipes 3 only through one end, and the number of the horizontal drain boards 202 connected to the vertical drain pipes 3 on two sides of the horizontal drain board 202 is the same. In this embodiment 3, the lowering distance of the whole silt layer is close, but the vacuum degree is high and the sedimentation is fast at the concentrated position of the drain plate 2 on the same side connected with the drain pipe 3, namely, the structural sedimentation imbalance exists in the specific silt layer, and referring to fig. 4, in embodiment 4, two adjacent horizontal drain plates 202 distributed vertically are connected with the vertical drain pipes 3 on different sides, so that the problem of the internal structural sedimentation imbalance is greatly alleviated; referring to fig. 5, in embodiment 5, the vertical drain pipes 3 are respectively disposed on two sides of the horizontal drain board 202, two ends of the horizontal drain board 202 are connected with the vertical drain pipes 3, the vertical drain pipes 3 on two sides are respectively provided with independent vacuum pumps, and the vacuum pumps connected with the vertical drain pipes 3 on two sides are alternately turned on to perform pumping. By alternately pumping the vacuum pump for the same time on both sides, the likelihood of sedimentation imbalance and deformation of the drain plate 2 is made smaller.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (9)
1. The utility model provides a vacuum preloading drainage concretion system, includes the silt pond, establishes the drain bar in the silt pond and the drainage system who is connected with the drain bar, and drainage system is connected with the vacuum pump, the top in silt pond is equipped with sealing membrane and heap layer, its characterized in that: the water storage layer is arranged above the stacking layer, waterproof films are arranged at the bottom and around the water storage layer, and a water outlet of the drainage system is arranged on the water storage layer.
2. A vacuum preloading drainage consolidation system as claimed in claim 1, wherein: the silt pool comprises a silt layer, a first filtering layer is arranged above the silt pool and comprises geotechnical cloth and a sand cushion layer, a drainage plate is paved above the sand cushion layer and connected with a drainage system, and a sealing film is arranged above the drainage plate.
3. A vacuum preloading drainage consolidation system as claimed in claim 2, wherein: the bottom of silt layer is equipped with the second filtering layer, the second filtering layer is including establishing geotechnique's cloth and the sand bed course in silt layer below, and the drain bar is laid in the below of sand bed course or the sand bed course, and the drain bar is connected with drainage system.
4. A vacuum preloading drainage consolidation system as claimed in any of claims 1 to 3, wherein: the drain board that sets up in the silt layer is vertical drain board, and vertical drain board passes through hand joint and horizontal drain pipe connection, and horizontal drain pipe inserts drainage system.
5. A vacuum preloading drainage consolidation system as claimed in any of claims 1 to 3, wherein: the drain board arranged in the silt layer is a horizontal drain board.
6. The vacuum preloading drainage consolidation system of claim 5, wherein: the vertical drain pipe is arranged on one side of the horizontal drain board, and the horizontal drain board is connected with the vertical drain pipe through a joint on one side close to the drain board.
7. The vacuum preloading drainage consolidation system of claim 6, wherein: the vertical drain pipes are respectively arranged on two sides of the horizontal drain boards, any one horizontal drain board is connected with the vertical drain pipes only through one end, and the number of the horizontal drain boards connected with the vertical drain pipes on two sides of the horizontal drain boards is the same.
8. The vacuum preloading drainage consolidation system of claim 7, wherein: two adjacent horizontal drain boards distributed vertically are connected with vertical drain pipes on different sides.
9. The vacuum preloading drainage consolidation system of claim 6, wherein: the vertical drain pipes are respectively arranged on two sides of the horizontal drain board, two ends of the horizontal drain board are connected with the vertical drain pipes, the vertical drain pipes on the two sides are respectively provided with independent vacuum pumps, and the vacuum pumps connected with the vertical drain pipes on the two sides are alternately started to pump and drain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321445096.3U CN220377246U (en) | 2023-06-08 | 2023-06-08 | Vacuum preloading drainage consolidation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321445096.3U CN220377246U (en) | 2023-06-08 | 2023-06-08 | Vacuum preloading drainage consolidation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220377246U true CN220377246U (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321445096.3U Active CN220377246U (en) | 2023-06-08 | 2023-06-08 | Vacuum preloading drainage consolidation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220377246U (en) |
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2023
- 2023-06-08 CN CN202321445096.3U patent/CN220377246U/en active Active
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