CN219886494U - Water accumulation preventing structure of airport pavement base salt isolation layer - Google Patents
Water accumulation preventing structure of airport pavement base salt isolation layer Download PDFInfo
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- CN219886494U CN219886494U CN202321505645.1U CN202321505645U CN219886494U CN 219886494 U CN219886494 U CN 219886494U CN 202321505645 U CN202321505645 U CN 202321505645U CN 219886494 U CN219886494 U CN 219886494U
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- layer
- water
- salt
- isolation layer
- pavement
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000002955 isolation Methods 0.000 title claims abstract description 32
- 150000003839 salts Chemical class 0.000 title claims abstract description 14
- 238000009825 accumulation Methods 0.000 title claims abstract description 13
- 230000002265 prevention Effects 0.000 claims abstract description 9
- 239000002689 soil Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 9
- 239000004746 geotextile Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000000407 epitaxy Methods 0.000 claims 1
- 238000005192 partition Methods 0.000 abstract description 15
- 239000010410 layer Substances 0.000 description 70
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002982 water resistant material Substances 0.000 description 1
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- Road Paving Structures (AREA)
Abstract
The utility model provides an airport pavement base salt-isolation layer water accumulation prevention structure which comprises a pavement structure layer and a partition layer, wherein the partition layer comprises a first water-isolation layer, the partition layer is arranged below a soil surface area within a preset range of the pavement structure layer and the extension of the pavement structure layer, the first water-isolation layer is reversely wrapped at a preset depth in the pavement structure layer, backfill materials are wrapped in the first water-isolation layer, the partition layer is communicated with a drainage blind ditch, and the bottom surface of the drainage blind ditch has a preset gradient. The water accumulation preventing structure of the airport pavement base salt isolation layer can solve the technical problem that water seepage is accumulated in the salt isolation layer to cause pavement base frost heaving in the prior art.
Description
Technical Field
The utility model relates to the technical field of road base treatment, in particular to an anti-ponding structure of an airport road base salt-separating layer.
Background
Airport construction is carried out in a saline soil area, and saline soil foundation treatment is carried out by adopting a partition layer, so that the method is a common technical means. The partition layer is usually in a form of two layers of cloth and one film, namely, a layer of waterproof film is sandwiched between two layers of geotextile, the geotextile can protect the film, and the film can prevent groundwater and salt from migrating upwards.
However, in cold areas, the method for setting the salt-separating layer of two films has certain problems. Rainfall, upper road surface construction maintenance water and upper water seepage in the operation period are in the geomembrane construction process, and are difficult to avoid to gather in the salt isolation layer, especially for the condition that the longitudinal elevation of the runway is low in the middle and high in the two sides. In the operation period, the road base water can cause the frost heaving and other problems of the road base. Similar problems have arisen in the operation of certain airports in northwest regions, which seriously affect the normal operation of the airports.
At present, in the field of airport construction, no perfect method for preventing salt-separating layer from accumulating water exists.
Disclosure of Invention
The utility model aims to provide an anti-ponding structure of an airport pavement base salt isolation layer, which solves the technical problem that water seepage is accumulated in the salt isolation layer to cause pavement base frost heaving in the prior art.
In order to achieve the above purpose, the utility model provides an airport pavement base salt-isolation layer water accumulation prevention structure, which comprises a pavement structure layer and a partition layer, wherein the partition layer comprises a first water-isolation layer, the partition layer is arranged below a soil surface area within a preset range of the pavement structure layer and the extension of the pavement structure layer, the first water-isolation layer is reversely wrapped at a preset depth in the pavement structure layer, backfill materials are wrapped in the first water-isolation layer, the partition layer is communicated with a drainage blind ditch, and the bottom surface of the drainage blind ditch has a preset gradient.
Compared with the prior art, the utility model has the beneficial effects that:
according to the airport road base salt isolation layer ponding prevention structure, the first water isolation layer is reversely wrapped in the road surface structure layer, the isolation layer is communicated with the drainage blind ditch, the bottom surface of the drainage blind ditch is provided with the slope, so that ponding is led out of the isolation layer, ponding in soil surrounding the road base is prevented from entering the isolation layer, upper water seepage is prevented from being accumulated in the isolation layer in an operation period, and frost heaving of the road base caused by the ponding of the road base is avoided.
Preferably, the slope of the bottom surface of the drainage blind ditch is the same as the slope of the road surface structural layer.
Preferably, the backfill material is fine sand protection layer, grading gravel and natural gravel from bottom to top.
Preferably, broken stone is filled in the drainage blind ditch, and geotechnical cloth is wrapped outside the broken stone in the drainage blind ditch.
Preferably, the tail end of the drainage blind ditch is provided with a seepage well.
Preferably, the seepage well is filled with crushed stone.
Preferably, the depth of the seepage well is set to be greater than the depth of the impermeable layer in the stratum.
Preferably, a second water-resisting layer is arranged at the bottom of the drainage blind ditch.
Preferably, the second water-resistant layer extends to the bottom of the seepage well.
Drawings
For a clearer description of embodiments of the present utility model, a brief description will be given of the drawings required for the embodiments, it being apparent that the drawings in the following description are some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic cross-sectional view of a blind ditch-free position in an airport pavement base salt-isolation layer water accumulation preventing structure in an embodiment of the utility model;
FIG. 2 is a schematic cross-sectional view of a blind ditch position in an anti-water accumulation structure of an airport pavement base salt-isolation layer according to an embodiment of the utility model;
FIG. 3 is a schematic cross-sectional view of an insulation layer of an airport pavement base salt-isolation layer water accumulation preventing structure in an embodiment of the utility model.
In the figure: the pavement structure layer 1, the partition layer 2, the first water-proof layer 21, the backfill material 22, the drainage blind ditch 3, the second water-proof layer 31 and the seepage well 4.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the embodiment provides an airport pavement base salt-isolation layer water accumulation prevention structure, which comprises a pavement structural layer 1 and a partition layer 2, wherein the partition layer 2 comprises a first water-isolation layer 21, the partition layer 2 is arranged below the pavement structural layer 1 and a soil surface area within an epitaxial preset range of the pavement structural layer, the first water-isolation layer 21 is reversely wrapped at a preset depth in the pavement structural layer 1, backfill materials 22 are wrapped in the first water-isolation layer 21, the partition layer 2 is communicated with a drainage blind ditch 3, and the bottom surface of the drainage blind ditch 3 has a preset gradient.
The bottom burial depth of the isolation layer 2 can be determined by comprehensively considering factors such as standard freezing depth of a field, underground water level and the like. The drainage blind ditches 3 are arranged along the direction of the vertical road shoulder line, one drainage blind ditch is arranged at intervals, the arrangement distance is comprehensively determined according to the design condition of the longitudinal slope of the road surface structural layer 1, for example, the arrangement distance is 100-200 m, and the larger the gradient of the longitudinal slope is, the larger the arrangement distance of the drainage blind ditches is.
In some preferred embodiments, the backfill material 22 is a fine sand protective layer, graded gravel, natural gravel, respectively, from bottom to top.
Specifically, broken stone is filled in the drainage blind ditch 3, and geotextile is wrapped outside the broken stone in the drainage blind ditch 3. In some preferred embodiments, the drain blind ditch 3 has a width of 1m to 2m and a height of 0.5m.
The isolating layer 2 is communicated with the drainage blind ditch 3 through a set interface, the drainage blind ditch 3 extends from one end of the interface to the tail end of the interface, and the tail end of the interface is positioned in a soil surface area outside the pavement structure layer 1. The slope of the bottom surface of the drainage blind ditch 3 is set as follows: compared with one end of the joint of the drainage blind ditch 3, the tail end of the drainage blind ditch 3 is positioned at a lower position of the bottom surface of the drainage blind ditch 3, so that accumulated water is conveniently led out from the drainage blind ditch to the outside. In some preferred embodiments, the slope of the bottom surface of the drain blind ditch 3 is the same as the slope of the road surface structure layer 1.
Specifically, the end of the drainage blind ditch 3 is provided with a seepage well 4, and broken stones are filled in the seepage well 4. In some preferred embodiments, the depth of the percolating well 4 is set to be greater than the depth of the impermeable layer in the formation in which it is located, so that the percolating well will drain the water that it introduces into the permeable layer in the formation.
Specifically, the drain blind drain 3 is provided at the bottom with a second water-blocking layer 31. In some preferred embodiments, the second water barrier 31 extends to the bottom of the diffusion well 4 to prevent ingress of moisture from the lower portion of the barrier 2.
The first water-resistant layer 21 and the second water-resistant layer 31 may be made of a water-resistant material commonly used in the art, such as a geomembrane.
By adopting the airport road base salt-separating layer ponding prevention structure, ponding can be led out from the separating layer, ponding in soil surrounding the road base is prevented from entering the separating layer, and water seepage at the upper part of the operating period is prevented from being gathered in the separating layer 2, so that frost heave of the road base caused by the road base ponding is avoided.
The foregoing description of various embodiments of the utility model has been presented to those skilled in the art for the purposes of illustration. It is not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. As described above, various alternatives and variations of the present utility model will be apparent to those skilled in the art. Thus, while some alternative embodiments have been specifically discussed, other embodiments will be apparent or relatively readily available to those skilled in the art. The present utility model is intended to embrace all alternatives, modifications and variations of the present utility model that have been discussed herein and other embodiments that fall within the spirit and scope of the above-described application.
While the present utility model has been described by way of embodiments, those of ordinary skill in the art will recognize that there are many variations and modifications of the present utility model without departing from the spirit of the utility model, and it is intended that the appended claims encompass such variations and modifications as do not depart from the spirit of the utility model.
Claims (9)
1. The utility model provides an airport road base separates salt layer prevents ponding structure, includes road surface structural layer and separates the layer, its characterized in that, the wall layer includes first water barrier, the wall layer sets up road surface structural layer and epitaxy presets the within range soil surface district under, first water barrier anti-package in the road surface structural layer presets the degree of depth, wrap up backfill material in the first water barrier, wall layer and drainage blind ditch intercommunication, drainage blind ditch bottom surface has the slope of preseting.
2. The airport pavement salt-barrier water-logging prevention structure of claim 1, wherein the slope of the drain blind drain bottom surface is the same as the slope of the pavement structural layer.
3. The airport pavement salt-separating layer water accumulation preventing structure according to claim 1, wherein the backfill material is fine sand protection layer, grading gravel and natural gravel respectively from bottom to top.
4. The airport pavement salt-isolation layer water accumulation preventing structure according to claim 1, wherein broken stones are filled in the drainage blind ditches, and geotextiles are wrapped outside the broken stones in the drainage blind ditches.
5. The airport pavement base salt barrier water accumulation preventing structure according to claim 1, wherein the tail end of the drainage blind ditch is provided with a seepage well.
6. The airport pavement salt barrier water-logging prevention structure of claim 5, wherein said seepage well is filled with crushed stone.
7. The airport pavement salt barrier water-logging prevention structure of claim 5 wherein the depth of the seepage well is configured to be greater than the depth of the water impermeable layer in the formation.
8. The airport pavement base salt-isolation layer water accumulation preventing structure according to any one of claims 5-7, wherein a second water-isolation layer is arranged at the bottom of the drainage blind ditch.
9. The airport pavement base salt barrier water-logging prevention structure of claim 8, wherein the second water barrier extends to the bottom of the seepage well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321505645.1U CN219886494U (en) | 2023-06-13 | 2023-06-13 | Water accumulation preventing structure of airport pavement base salt isolation layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321505645.1U CN219886494U (en) | 2023-06-13 | 2023-06-13 | Water accumulation preventing structure of airport pavement base salt isolation layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219886494U true CN219886494U (en) | 2023-10-24 |
Family
ID=88394656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321505645.1U Active CN219886494U (en) | 2023-06-13 | 2023-06-13 | Water accumulation preventing structure of airport pavement base salt isolation layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219886494U (en) |
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2023
- 2023-06-13 CN CN202321505645.1U patent/CN219886494U/en active Active
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