CN109680584B - Freeze-thaw prevention stable roadbed structure in seasonal freezing area and construction process - Google Patents
Freeze-thaw prevention stable roadbed structure in seasonal freezing area and construction process Download PDFInfo
- Publication number
- CN109680584B CN109680584B CN201811646794.3A CN201811646794A CN109680584B CN 109680584 B CN109680584 B CN 109680584B CN 201811646794 A CN201811646794 A CN 201811646794A CN 109680584 B CN109680584 B CN 109680584B
- Authority
- CN
- China
- Prior art keywords
- layer
- salt
- roadbed
- doped
- base layer
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/245—Methods or arrangements for preventing slipperiness or protecting against influences of the weather for preventing ice formation or for loosening ice, e.g. special additives to the paving material, resilient coatings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/227—Gutters; Channels ; Roof drainage discharge ducts set in sidewalks
Abstract
The invention provides a freeze-thaw preventing stable roadbed structure in a seasonal freezing area and a construction process, and belongs to the technical field of road construction. According to the salt-doped roadbed, the salt-doped roadbed layer containing the inorganic salt admixture is arranged, so that the melting point of water in the salt-doped roadbed layer can be reduced, the icing and expansion in the roadbed are avoided, and the deformation and damage of the road surface are avoided; the salt-doped road base layer is provided with the impermeable layer and the first road base layer, the impermeable layer prevents water containing inorganic salt admixture from entering the first road base layer to corrode the first road base layer and the road surface, and can block the rise of the water, so that the first road base layer is kept at a lower water content level, and the damage of periodic freeze thawing to the first road base layer and the road surface is weakened.
Description
Technical Field
The invention belongs to the technical field of road construction, and particularly relates to a freeze-thaw prevention stable roadbed structure in a seasonal freezing area and a construction process.
Background
Seasonal frozen soil areas, which are called seasonal frozen areas for short, can generate periodic freezing and thawing phenomena on the soil surface layers of the seasonal frozen areas in seasonal changes. Because water expands after being frozen and the roadbed of the road is directly paved on the soil layer and contains a large amount of water, the road in the seasonal frozen area is often damaged in periodic freezing and thawing, and the service life is sharply reduced.
Disclosure of Invention
The invention aims to provide a freeze-thaw prevention stable roadbed structure for a seasonal freezing area and a construction process, and aims to solve the technical problem that roads in the seasonal freezing area are damaged in periodic freeze-thaw in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is a freezing and thawing resistant stable roadbed structure for a freezing and thawing area, comprising: the salt-doped road base layer contains inorganic salt admixture; the anti-seepage layer is arranged on the upper layer of the salt-doped road base layer; and the first path of base layer is arranged on the upper layer of the impermeable layer.
Further, in the stable roadbed structure for preventing freezing and thawing in the freezing and thawing area, the salt-doped roadbed layer and the first roadbed layer are both porous permeable structures.
Further, in the stabilized roadbed structure for freeze thawing prevention in the freezing season zone, the salt-doped road base layer comprises graded gravel doped with inorganic salt admixtures, the first road base layer comprises graded gravel, and the impermeable layer comprises anti-cracking impermeable composite geotextile.
Further, in the stabilized roadbed structure for preventing freezing and thawing in the freezing and freezing area, the inorganic salt admixture comprises one or more of lime, cement or salt, the mass ratio of the inorganic salt admixture is 2% -6%, the thickness of the salt-doped roadbed layer is 30 cm-150 cm, the thickness of the first road base layer is 30 cm-90 cm, and the content of the graded gravel with the content of less than 0.075 is not more than 4%.
Further, in the above-mentioned stable roadbed structure of freezing and thawing prevention in season freezing area, still include: and the infiltration ditch is at least arranged on one side of the salt-doped roadbed layer, and an impermeable layer is arranged between the infiltration ditch and the salt-doped roadbed layer and is used for collecting the seepage water in the first roadbed layer.
Further, in the above-mentioned stable roadbed structure of freezing and thawing prevention in the season freezing zone, the infiltration ditch includes: the salt-doped road base layer is arranged on the outer wall of the pipe body, and the salt-doped road base layer is provided with a salt-doped road base layer; the water seepage filler is filled at the periphery and the upper part of the water seepage pipe; and the water permeable interlayer is arranged between the water permeable filler and the first road base layer.
Furthermore, in the stabilized roadbed structure for preventing freezing and thawing in the freezing and freezing area, the periphery of the water seepage pipe is also provided with a first water permeable wrapping layer; the materials of the first permeable wrapping layer and the permeable interlayer are permeable geotextiles.
Further, in the above-mentioned stable roadbed structure of freezing and thawing prevention in season freezing area, still include: the drainage side ditch is at least arranged on one side of the first path of base layer and is positioned above the water seepage pipe; and the waterproof sealing layer is arranged between the drainage side ditch and the water seepage filler.
The invention provides a freeze-thaw prevention stable roadbed construction process for a seasonal freezing area, which comprises the following steps of:
A. excavating earthwork, and excavating the earthwork in the road planning range;
B. adding an inorganic salt admixture into the permeable aggregate, and stirring to prepare a salt-doped roadbed material;
C. paving a salt-doped roadbed layer by using the salt-doped roadbed layer material, and reserving a groove of a seepage ditch;
D. paving an impermeable layer on the salt-doped road base layer;
E. constructing an infiltration ditch on the impermeable layer and paving a first path of base layer;
F. and paving the permeable geotextile on the first path of base layer.
Further, in the construction process of the freeze-thaw prevention stable roadbed in the seasonal freezing area, in the step B, the inorganic salt admixture is quicklime particles, cement is added into the quicklime particles, then the quicklime particles are stirred uniformly in a dry mode, and then the quicklime particles are added into gravel and stirred uniformly in a dry mode to prepare the salt-doped roadbed material.
The freeze-thaw prevention stable roadbed structure in the seasonal freezing area has the beneficial effects that: compared with the prior art, the salt-doped roadbed layer containing the inorganic salt admixture can reduce the melting point of water in the salt-doped roadbed layer, avoid icing and expansion in the roadbed and further avoid deformation and damage of the road surface; the salt-doped road base layer is provided with the impermeable layer and the first road base layer, the impermeable layer prevents water containing inorganic salt admixture from entering the first road base layer to corrode the first road base layer and the road surface, and can block the rise of the water, so that the first road base layer is kept at a lower water content level, and the damage of periodic freeze thawing to the first road base layer and the road surface is weakened.
The freeze-thaw prevention stable roadbed construction process for the seasonal freezing area has the beneficial effects that: compared with the prior art, the salt-doped roadbed layer is used for replacing earthwork of the original frozen soil layer with the salt-doped roadbed layer, the anti-seepage layer, the first roadbed layer and the seepage ditch with the inorganic salt admixture are constructed step by step, so that the anti-seepage performance of the anti-seepage layer is ensured, the construction quality of the roadbed is improved, and meanwhile, the permeable geotextile is laid on the first roadbed layer to prevent the pavement material from sinking to the first roadbed layer and simultaneously enable water in the pavement to sink and be discharged from the seepage ditch, so that the strength of the pavement is improved, the water content of the pavement is reduced, and the damage of the freeze thawing phenomenon to the pavement is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic cross-sectional structure diagram of a freeze-thaw preventing stable roadbed structure in a freezing and thawing area according to an embodiment of the invention.
Wherein, in the figures, the respective reference numerals:
10-a salt-doped roadbed layer; 20-barrier layer; 30-a first way base layer;
40-groove seepage; 41-water seepage pipe; 42-water-permeable filler; 43-a water-permeable barrier; 44-a first water-permeable wrapping layer;
50-drainage side ditch; 60-water-proof sealing layer.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a stabilized roadbed structure for preventing freezing and thawing in a freezing region and a construction process thereof provided by the invention will be described.
The freeze-thaw prevention stable roadbed structure in the freezing region comprises a salt-doped roadbed layer 10 containing inorganic salt admixture, an impermeable layer 20 arranged on the upper layer of the salt-doped roadbed layer 10, and a first roadbed layer 30 arranged on the upper layer of the impermeable layer 20.
Compared with the prior art, the salt-doped roadbed 10 containing the inorganic salt admixture is arranged, so that the melting point of water in the salt-doped roadbed 10 can be reduced, the icing and expansion in the roadbed can be avoided, and the deformation and damage of the road surface can be avoided; the salt-doped road base layer 10 is provided with the impermeable layer 20 and the first road base layer 30, the impermeable layer 20 prevents water containing inorganic salt admixture from entering the first road base layer 30 to corrode the first road base layer 30 and the road surface, and can block the rise of the water, so that the first road base layer 30 is kept at a lower water content level, and the damage of periodic freezing and thawing to the first road base layer 30 and the road surface is weakened.
Further, as a specific embodiment of the stabilized roadbed structure for preventing freezing and thawing in the freezing and thawing area provided by the invention, the salt-doped roadbed layer 10 and the first roadbed layer 30 are both porous permeable structures. Specifically, the salt-doped road base layer 10 comprises graded gravel doped with inorganic salt admixture, the first road base layer 30 comprises graded gravel, and the impermeable layer 20 comprises anti-cracking impermeable composite geotextile. The inorganic salt admixture comprises one or more of lime, cement or salt and other inorganic salts, and the mass ratio of the inorganic salt admixture is 2-6%, and lime is preferably added by 3%. The thickness of the salt-doped road base layer 10 is 30 cm-150 cm, preferably 60cm, 90cm or 120 cm. The thickness of the first path of base layer 30 is 30 cm-90 cm, preferably 60 cm. The content of less than 0.075 in the gradation of the graded gravel is not more than 4%, preferably not more than 5%.
Further, as a specific embodiment of the stabilized roadbed structure for preventing freezing and thawing in the freezing and thawing season zone provided by the invention, the stabilized roadbed structure for preventing freezing and thawing in the freezing and thawing season zone further comprises a seepage ditch 40, wherein the seepage ditch 40 is at least arranged on one side of the salt-doped roadbed layer 10, and an impermeable layer 20 is arranged between the seepage ditch 40 and the salt-doped roadbed layer 10 and is used for collecting seepage water in the first roadbed layer 30. The seepage ditch 40 can discharge seepage water in the first road base layer 30 and the road surface, reduce the water content of the road, and reduce the damage of the freeze-thaw phenomenon to the road
Specifically, the infiltration ditch 40 comprises an infiltration pipe 41, infiltration filler 42 and a permeable interlayer 43, the infiltration pipe 41 is at least arranged on one side of the salt-doped roadbed 10, an impermeable layer 20 is arranged between the infiltration pipe and the salt-doped roadbed 10, and permeable holes communicated with the inside and the outside are arranged on the pipe wall; the water seepage filler 42 is filled at the periphery and the upper part of the water seepage pipe 41; and a water permeable barrier 43 is disposed between the water permeable packing and the first road base layer 30. A first permeable wrapping layer 44 is arranged on the periphery of the water seepage pipe 41 to prevent aggregate such as gravel from entering the water seepage pipe 41 to block the water seepage pipe; the materials of the first water-permeable wrapping layer 44 and the water-permeable interlayer 43 are water-permeable geotextiles so as to facilitate construction operation.
Further, the freeze-thaw prevention stable roadbed structure in the freezing and freezing area further comprises a drainage side ditch 50 and a waterproof sealing layer 60, wherein the drainage side ditch 50 is at least arranged on one side of the first road base layer 30 and is positioned above the water seepage pipe 41; the water-blocking seal 60 is disposed between the gutter 50 and the porous filler 42 and between the gutter 50 and the first road base layer 30.
The invention provides a freeze-thaw prevention stable roadbed construction process for a seasonal freezing area, which comprises the following steps of:
A. excavating earthwork, and excavating the earthwork in the road planning range;
B. adding an inorganic salt admixture into the permeable aggregate, and stirring to prepare a salt-doped road base layer 10 material;
C. paving the salt-doped roadbed 10 by using the salt-doped roadbed 10 material, and reserving a groove of the infiltration trench 40;
D. paving an impermeable layer 20 on the salt-doped road base layer 10;
E. building an infiltration ditch 40 on the impermeable layer 20 and paving a first road base layer 30;
F. and laying permeable geotextile on the first path of base layer 30.
Compared with the prior art, the construction process for the freeze-thaw prevention stable roadbed in the seasonal frozen region has the advantages that earthwork of an original frozen soil layer is replaced by the salt-doped roadbed layer 10, the salt-doped roadbed layer 10 with inorganic salt admixture, the anti-seepage layer 20, the first roadbed layer 30 and the seepage ditches 40 are constructed step by step, the anti-seepage performance of the anti-seepage layer 20 is guaranteed, the construction quality of the roadbed is improved, meanwhile, the permeable geotextile is laid on the first roadbed layer 30, so that the water in the road surface sinks and is discharged from the seepage ditches 40 while the road surface material is prevented from sinking to the first roadbed layer 30, the strength of the road surface is improved, the water content of the road surface is reduced, and the damage of freeze-thaw phenomena to.
Further, as a specific embodiment of the construction process of the stabilized roadbed for preventing freezing and thawing in the freezing and thawing area provided by the invention, in the step a, after the earthwork is excavated, inorganic salts such as lime, cement or salt are injected into the soil body around the excavated area, so as to reduce the melting point of the water in the surrounding soil body.
Further, as a specific implementation manner of the construction process for stabilizing the roadbed by preventing freeze thawing in the seasonal frozen region provided by the invention, in the step B, the inorganic salt admixture is quicklime particles, cement is added into the quicklime particles, then the quicklime particles are stirred and stirred uniformly in a dry mode, so that the cement is uniformly wrapped on the outer surfaces of the quicklime particles, and then the quicklime particles are added into gravel and stirred uniformly in a dry mode, so that the salt-doped roadbed layer 10 material is prepared. After the salt-doped roadbed 10 is paved, the cement wrapped on the quicklime particles firstly absorbs the permeated water to form a wrapping layer, so that the quicklime particles in the wrapping layer slowly absorb water, and the low water content in the salt-doped roadbed 10 is kept for a certain time; after a period of time, the salt-doped roadbed 10 becomes relatively stable, inorganic salt can be slowly separated out from quicklime particles and cement along with the increase of the water content in the salt-doped roadbed 10, the melting point of water in the salt-doped roadbed 10 is reduced, and the damage of freezing expansion to a roadbed is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a stable roadbed structure of freezing and thawing is prevented in frozen region in season which characterized in that includes:
the salt-doped road base layer contains an inorganic salt admixture and is used for replacing a frozen soil layer;
the anti-seepage layer is arranged on the upper layer of the salt-doped road base layer;
the first path of base layer is arranged on the upper layer of the impermeable layer; and
the infiltration ditch is at least arranged on one side of the salt-doped roadbed layer, and an impermeable layer is arranged between the infiltration ditch and the salt-doped roadbed layer and is used for collecting the seepage water in the first roadbed layer;
the salt-doped road base layer and the first road base layer are both porous and water-permeable structures.
2. The freeze-thaw resistant stabilized roadbed structure of the frozen region as recited in claim 1 wherein: mix salt road-bed including the gradation gravel of mixing inorganic salt admixture, first road-bed includes the gradation gravel, the barrier layer includes anti-cracking antiseep composite geotechnological cloth.
3. The freeze-thaw resistant stabilized roadbed structure of the frozen region as recited in claim 2 wherein: the inorganic salt admixture comprises one or more of lime, cement or salt, the mass ratio of the inorganic salt admixture is 2% -6%, the thickness of the salt-doped roadbed layer is 30 cm-150 cm, the thickness of the first road base layer is 30 cm-90 cm, and the content of the graded gravel which is less than 0.075 is not more than 4%.
4. A freeze-thaw resistant stabilized subgrade structure in a frozen area according to claim 3, wherein said infiltration trenches comprise:
the salt-doped road base layer is arranged on the outer wall of the pipe body, and the salt-doped road base layer is provided with a salt-doped road base layer;
the water seepage filler is filled at the periphery and the upper part of the water seepage pipe; and
the water permeable interlayer is arranged between the water seepage filler and the first path of base layer.
5. The freeze-thaw resistant stabilized roadbed structure of the frozen region as recited in claim 4 wherein: the periphery of the water seepage pipe is also provided with a first water permeable wrapping layer; the first permeable wrapping layer and the permeable interlayer are made of permeable geotextile.
6. The freeze-thaw resistant stabilized roadbed structure of the seasonal frozen region, further comprising:
the drainage side ditch is at least arranged on one side of the first path of base layer and is positioned above the water seepage pipe; and
and the waterproof sealing layer is arranged between the drainage side ditch and the water seepage filler.
7. A stabilized roadbed construction process for preventing freezing and thawing in a freezing and freezing area, which is used for constructing the stabilized roadbed structure for preventing freezing and thawing in the freezing and freezing area according to any one of claims 1 to 6, and comprises the following steps:
A. excavating earthwork, and excavating the earthwork in the road planning range;
B. adding an inorganic salt admixture into the permeable aggregate, and stirring to prepare a salt-doped roadbed material;
C. paving a salt-doped roadbed layer by using the salt-doped roadbed layer material, and reserving a groove of a seepage ditch;
D. paving an impermeable layer on the salt-doped road base layer;
E. constructing an infiltration ditch on the impermeable layer and paving a first path of base layer;
F. and paving the permeable geotextile on the first path of base layer.
8. The freeze-thaw preventing stable roadbed construction process for the seasonal freezing area as claimed in claim 7, wherein the freeze-thaw preventing stable roadbed construction process comprises the following steps: in the step B, the inorganic salt admixture is quicklime particles, cement is added into the quicklime particles, then the quicklime particles are stirred and stirred uniformly in a dry mode, and then the quicklime particles are added into gravel and stirred uniformly in a dry mode, so that the salt-doped roadbed material is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646794.3A CN109680584B (en) | 2018-12-30 | 2018-12-30 | Freeze-thaw prevention stable roadbed structure in seasonal freezing area and construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646794.3A CN109680584B (en) | 2018-12-30 | 2018-12-30 | Freeze-thaw prevention stable roadbed structure in seasonal freezing area and construction process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109680584A CN109680584A (en) | 2019-04-26 |
| CN109680584B true CN109680584B (en) | 2021-04-13 |
Family
ID=66191523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811646794.3A Active CN109680584B (en) | 2018-12-30 | 2018-12-30 | Freeze-thaw prevention stable roadbed structure in seasonal freezing area and construction process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109680584B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5273804A (en) * | 1988-11-07 | 1993-12-28 | Netlon Limited | Reinforcement for reinforcing a paved surface |
| KR100838227B1 (en) * | 2007-04-16 | 2008-06-16 | 한국철도기술연구원 | Structure of high-strength and rapidly-hardening prepacked concrete track for carrying out mechanization and working method thereof |
| CN104562890A (en) * | 2014-12-25 | 2015-04-29 | 北京仁创生态环保科技有限公司 | Water-permeable silica sand road shoulder |
| CN105178133A (en) * | 2015-08-03 | 2015-12-23 | 中铁西北科学研究院有限公司 | Disc-shaped ecological water drainage facility in permafrost region and construction method for disc-shaped ecological water drainage facility |
| CN205115938U (en) * | 2015-10-21 | 2016-03-30 | 正平路桥建设股份有限公司 | Road bed freeze injury of high and cold district is synthesized and is punished structure |
| CN205874872U (en) * | 2016-07-20 | 2017-01-11 | 新天一集团有限公司 | Be applied to selfreparing cement concrete pavement of town road |
| CN107201708A (en) * | 2016-03-17 | 2017-09-26 | 中国科学院寒区旱区环境与工程研究所 | A kind of compound cold-storage roadbed suitable for permafrost region road engineering |
-
2018
- 2018-12-30 CN CN201811646794.3A patent/CN109680584B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5273804A (en) * | 1988-11-07 | 1993-12-28 | Netlon Limited | Reinforcement for reinforcing a paved surface |
| KR100838227B1 (en) * | 2007-04-16 | 2008-06-16 | 한국철도기술연구원 | Structure of high-strength and rapidly-hardening prepacked concrete track for carrying out mechanization and working method thereof |
| CN104562890A (en) * | 2014-12-25 | 2015-04-29 | 北京仁创生态环保科技有限公司 | Water-permeable silica sand road shoulder |
| CN105178133A (en) * | 2015-08-03 | 2015-12-23 | 中铁西北科学研究院有限公司 | Disc-shaped ecological water drainage facility in permafrost region and construction method for disc-shaped ecological water drainage facility |
| CN205115938U (en) * | 2015-10-21 | 2016-03-30 | 正平路桥建设股份有限公司 | Road bed freeze injury of high and cold district is synthesized and is punished structure |
| CN107201708A (en) * | 2016-03-17 | 2017-09-26 | 中国科学院寒区旱区环境与工程研究所 | A kind of compound cold-storage roadbed suitable for permafrost region road engineering |
| CN205874872U (en) * | 2016-07-20 | 2017-01-11 | 新天一集团有限公司 | Be applied to selfreparing cement concrete pavement of town road |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109680584A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103510441A (en) | Three-dimensional-drainage roadbed structure for preventing water damage of road in cold region and construction method thereof | |
| CN104514216A (en) | Fill channel anti-frost heaving and anti-seepage structure and construction method | |
| CN208982109U (en) | A kind of tunnel structure with antiseepage drain function | |
| HU226433B1 (en) | Foundation slab of underground passage for road | |
| KR20010000378A (en) | Filling method to protect hidden pipe | |
| CN104343177A (en) | Subsurface drainage channel | |
| CN210596858U (en) | Plateau permafrost region roadbed structure | |
| CN109680584B (en) | Freeze-thaw prevention stable roadbed structure in seasonal freezing area and construction process | |
| CN219080361U (en) | Mountain-side abrupt slope terrain channel structure | |
| CN208803316U (en) | A kind of shallow water position highway waterproof roadbed | |
| CN207793792U (en) | A kind of road surface permeable pavement structure | |
| CN206298869U (en) | A kind of concrete guard wall structure of free drainage | |
| CN214363925U (en) | Cut water seepage ditch system | |
| CN213804676U (en) | Soft soil foundation structure | |
| CN210262542U (en) | Road structure for sponge city construction | |
| CN212582324U (en) | Municipal works road laying structure | |
| CN208455573U (en) | A kind of full library basin Anti-seeping technology structure of karst area | |
| CN203360969U (en) | Express way reconstruction and extension engineering central median drainage system | |
| CN207314070U (en) | Prevent highway from the insulation ground of frozen soil change occurs | |
| CN220224798U (en) | Roadbed filling structure | |
| CN207297090U (en) | A kind of sewer structure for expansive stratum Tunnel Base draining | |
| KR20190061300A (en) | Reinforcement method for slope with water permeability and drainage | |
| CN217324790U (en) | Novel structure of salinized soil roadbed in cold and arid region | |
| CN214005290U (en) | Permeable paving and saltpetering alkali protection integrated structure for grass planting bricks in landscape of saline-alkali soil | |
| CN209975480U (en) | Seepage-proofing channel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |