CN103898824A - Method for treating substrate of roadbed with plastic drain boards in high-cold permafrost regions - Google Patents
Method for treating substrate of roadbed with plastic drain boards in high-cold permafrost regions Download PDFInfo
- Publication number
- CN103898824A CN103898824A CN201410170456.2A CN201410170456A CN103898824A CN 103898824 A CN103898824 A CN 103898824A CN 201410170456 A CN201410170456 A CN 201410170456A CN 103898824 A CN103898824 A CN 103898824A
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- roadbed
- soil
- permafrost
- thickness
- substrate
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000758 substrate Substances 0.000 title claims abstract description 21
- 239000002689 soil Substances 0.000 claims abstract description 39
- 239000004575 stone Substances 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000009286 beneficial effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000035699 permeability Effects 0.000 claims description 5
- 235000013312 flour Nutrition 0.000 claims description 4
- 238000009490 roller compaction Methods 0.000 claims description 4
- 238000005336 cracking Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 3
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 101100309714 Arabidopsis thaliana SD16 gene Proteins 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Road Paving Structures (AREA)
Abstract
The invention relates to a method for treating a substrate of a roadbed with plastic drain boards in high-cold permafrost regions. When roads are built on permafrost in high-cold regions, the original geological hydrothermal conditions of the permafrost are changed to cause hydrothermal redistribution and further result in thaw collapse and collapse of the roadbed, cracking of the road surface and the like, so that traffic can not operate normally or is disrupted, and the service life of the road is influenced. The method comprises the following steps: clearing road rank substrate surface soil in permafrost regions to the permafrost layer, filling graded broken stone, carrying out roll forming on the graded broken stone, flattening, making a road camber which is 3% higher, and laying horizontal plastic drain boards, wherein in the overlapping process, a higher-position board is pressed on a lower-position board, and the horizontal plastic drain boards extend into the longitudinal blind drains; and fixing the drain boards, and covering a 20CM-thick good-permeability fine filler on the drain boards while arranging a berm which is greater than 4m wide outside the bank slope by using clear surface soil and waste soil. The method is used for treating the substrate of the roadbed in high-cold permafrost regions.
Description
technical field:
the present invention relates to a kind of Cold And Frozen-soil Regions roadbed plastic draining board and process the method for substrate.
background technology:
on extremely frigid zones ever-frozen ground, carrying out highway builds, changed the hydro-thermal situation of original ever frozen soil geology, caused the heavily distribution of hydro-thermal, thus cause roadbed thaw collapse, subside, the disease such as pavement crack, traffic cannot normally be travelled or suspend traffic, and affects highway application life.
summary of the invention:
the object of the present invention is to provide a kind of Cold And Frozen-soil Regions roadbed plastic draining board to process the method for substrate.
the object of the present invention is achieved like this:
a kind of Cold And Frozen-soil Regions roadbed is processed the method for substrate with plastic draining board, Permafrost Area embankment substrate table soil is removed to frozen soil layer, change and fill out graded broken stone, thickness with excavate thickness and be equal to, graded broken stone roller-compaction, flatten and make the road camber higher than 3%, be beneficial to transverse drainage, lay horizontal plastic draining board, when overlap joint, high-order plate is pushed down low level plate, horizontal plastic draining board extends into longitudinal french drain, then fix band drain, on band drain, fill the thick flour filler with good water permeability of 20CM, play cushioning effect, moisture is discharged to both sides, longitudinally french drain thickness be change fill out the thickness that bankets on thickness and plate with, embankment utilizes clear table soil and spoir setting to be greater than the wide banket of 4m simultaneously outside side slope of embankment.
beneficial effect:
1. the present invention has ensured roadbed substrate construction quality effectively, has avoided thaw collapse, frost heave, subsides, the generation of the disease such as pavement crack.
easy construction of the present invention, using material is all versatile material, easily obtains.The present invention is applicable to the roadbed substrate construction under extremely frigid zones ever-frozen ground geological conditions.
the present invention is with respect to Composite foundation constructions such as " Yi Qiaodai road ", " excavate frozen soil change fill out " and " Dense Broken Stone Peg ", save a large amount of road materials, as reinforcing bar, rubble, cement, in (slightly) sand, graded gravel etc., energy conservation, has far reaching significance to environmental protection.The invention process has been saved the duration, has significantly reduced construction cost, and construction cost is minimum reduces by 30%.Obtain good economic benefit.
the present invention has solved the protection problem of ever frozen soil effectively, improves the resistance to overturning of Permafrost Area roadbed, has reduced overhaul number of times, and operation cost reduces, and extends the application life of highway, and social benefit is remarkable.
brief description of the drawings:
fig. 1 is construction flow chart of the present invention.
detailed description of the invention:
embodiment 1:
a kind of Cold And Frozen-soil Regions roadbed is processed the method for substrate with plastic draining board, Permafrost Area embankment substrate table soil is removed to frozen soil layer, change and fill out graded broken stone, thickness with excavate thickness and be equal to, graded broken stone roller-compaction, flatten and make the road camber higher than 3%, be beneficial to transverse drainage, lay horizontal plastic draining board, when overlap joint, high-order plate is pushed down low level plate, horizontal plastic draining board extends into longitudinal french drain, then fix band drain, on band drain, fill the thick flour filler with good water permeability of 20CM, play cushioning effect, moisture is discharged to both sides, longitudinally french drain thickness be change fill out the thickness that bankets on thickness and plate with, embankment utilizes clear table soil and spoir setting to be greater than the wide banket of 4m simultaneously outside side slope of embankment.
embodiment 2:
process the method for substrate with plastic draining board according to the Cold And Frozen-soil Regions roadbed described in embodiment 1, according to the each road of situation reasonable arrangement working procedures such as the engineering geology of Permafrost Section, weather conditions and construction manpowers, maximum possible reduces the open-assembly time of ever-frozen ground, reduces the artificial disturbance to frozen soil.
permafrost Area embankment substrate table soil is removed to frozen soil layer, changed and fill out graded broken stone class material and be beneficial to permeablely, flatten and make and be greater than 3% road camber and be beneficial to transverse drainage.
lay horizontal plastic draining board, cut off the interchange of heat of Roadbed Soil and substrate frozen soil.On band drain, fill the thick flour filler of 20CM, play cushioning effect, moisture is discharged to both sides.Longitudinal french drain is established in embankment both sides.
outside side slope of embankment, adopt clear table soil and spoir setting to be greater than the wide banket of 4m.
embodiment 3:
the method of processing substrate according to the Cold And Frozen-soil Regions roadbed described in embodiment 1 or 2 with plastic draining board, key points for operation are as follows:
excavate table soil, should dig clean non-applicability soil and lack again disturbance frozen soil as far as possible.
change and fill out graded broken stone, thickness will with excavate thickness and be equal to.
graded broken stone roller-compaction, ensures to exceed 3% road camber.
horizontal plastic draining board is laid, and wants high-order plate to push down low level plate when overlap joint.
horizontal plastic draining board will extend into longitudinal french drain.
fixing band drain.
on plate, fill the fine grained soils of good water permeability.
longitudinally blind ditch construction, french drain thickness be change fill out on thickness and plate, banket with.
embankment carries out banket construction simultaneously.Detect water content, guarantee that water content that fine grained soils fills is in optimum moisture content interval.
embodiment 4:
the method of processing substrate according to the Cold And Frozen-soil Regions roadbed described in embodiment 1 or 2 or 3 with plastic draining board, material and equipment are as shown in table 1, table 2:
| Sequence number | Title material | Specifications and models | Performance indications |
| 1 | Plastic draining board | ＨＣ－Ｈ３０ | Water-flowing amount 20cm2/s |
| 2 | Composite geo-membrane | Wide cut 4m-6m | 200g/m2-1500g/m2 |
| 3 | Single slope drainage pipe | 60cm×120cm×3cm | Every cubic metre of heavy 12kg of quality |
table 1
| Sequence number | Device name | Unit type | Unit | Quantity | Remarks |
| 1 | Excavator | PC200 | Platform | 3 | ? |
| 2 | Bulldozer | SD16 | Platform | 1 | ? |
| 3 | Land leveller | PY180 | Platform | 1 | ? |
| 4 | Vibratory roller | 20T | Platform | 2 | ? |
| 5 | Pneumatic-tired rollers | 9-16T | Platform | 1 | ? |
| 6 | Earthwork transport vehicle | 15T | Platform | 20 | ? |
| 7 | Waterwheel | 8T | Platform | 7 | ? |
table 2.
embodiment 5:
process the method for substrate according to the Cold And Frozen-soil Regions roadbed described in embodiment 1 or 2 or 3 or 4 with plastic draining board, the good engineering time of GPRS while excavating table soil, melt in the spring time, construct.In work progress, should take measures to keep roadbed and around frozen soil in frozen state.While adopting cohesive soil or the bad native railway embankment using of water permeability, should control native water content, while rolling, water content is controlled in optimum moisture content ± 2% scope.Adopt the technical measures such as geo-grid according to designing requirement, increase roadbed globality and intensity.Underground water is grown location, and roadbed gutter should have seepage control measure.The structure constructions such as overfall should be taked reinforcement measure by designing requirement.While banketing on band drain, to ensure not movement and deformation of band drain.The graded broken stone fines filling must be controlled mud content.What embankment both sides were arranged is greater than the wide banket of 4m and will strictly constructs, and construction also adopts layered rolling, carries out layer by layer degree of compaction detection.Weeper drain will arrange reasonable longitudinal gradient.The laying of composite geo-membrane should be noted the smooth of it in construction, prevents from construction, occurring folding, and plays good antiseepage effect.
Claims (1)
1. a Cold And Frozen-soil Regions roadbed is processed the method for substrate with plastic draining board, it is characterized in that: Permafrost Area embankment substrate table soil is removed to frozen soil layer, change and fill out graded broken stone, thickness with excavate thickness and be equal to, graded broken stone roller-compaction, flatten and make the road camber higher than 3%, be beneficial to transverse drainage, lay horizontal plastic draining board, when overlap joint, high-order plate is pushed down low level plate, horizontal plastic draining board extends into longitudinal french drain, then fix band drain, on band drain, fill the thick flour filler with good water permeability of 20CM, play cushioning effect, moisture is discharged to both sides, longitudinally french drain thickness be change fill out the thickness that bankets on thickness and plate with, embankment utilizes clear table soil and spoir setting to be greater than the wide banket of 4m simultaneously outside side slope of embankment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410170456.2A CN103898824B (en) | 2014-04-25 | 2014-04-25 | The method that Cold And Frozen-soil Regions roadbed processes substrate with plastic draining board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410170456.2A CN103898824B (en) | 2014-04-25 | 2014-04-25 | The method that Cold And Frozen-soil Regions roadbed processes substrate with plastic draining board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103898824A true CN103898824A (en) | 2014-07-02 |
| CN103898824B CN103898824B (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410170456.2A Expired - Fee Related CN103898824B (en) | 2014-04-25 | 2014-04-25 | The method that Cold And Frozen-soil Regions roadbed processes substrate with plastic draining board |
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| CN (1) | CN103898824B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200881A (en) * | 2015-10-21 | 2015-12-30 | 杭州江润科技有限公司 | Construction method for comprehensive treatment structure for subgrade frost damage in high cold region |
| CN114855518A (en) * | 2021-11-18 | 2022-08-05 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Permafrost region hydrothermal protection roadbed structure |
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|---|---|---|---|---|
| JP2004278228A (en) * | 2003-03-18 | 2004-10-07 | Cognis Japan Ltd | Waterproof pavement construction method of floor slab |
| JP2007023653A (en) * | 2005-07-19 | 2007-02-01 | Dow Kakoh Kk | Freezing preventive structure |
| CN101307586A (en) * | 2008-05-29 | 2008-11-19 | 中国科学院寒区旱区环境与工程研究所 | Broken stone slope protector and air-duct composite roadbed |
| CN203212971U (en) * | 2013-04-19 | 2013-09-25 | 中交第一公路勘察设计研究院有限公司 | Thermal probe insulation board type expressway subgrade widening structure on soil-containing ice layer segment |
-
2014
- 2014-04-25 CN CN201410170456.2A patent/CN103898824B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004278228A (en) * | 2003-03-18 | 2004-10-07 | Cognis Japan Ltd | Waterproof pavement construction method of floor slab |
| JP2007023653A (en) * | 2005-07-19 | 2007-02-01 | Dow Kakoh Kk | Freezing preventive structure |
| CN101307586A (en) * | 2008-05-29 | 2008-11-19 | 中国科学院寒区旱区环境与工程研究所 | Broken stone slope protector and air-duct composite roadbed |
| CN203212971U (en) * | 2013-04-19 | 2013-09-25 | 中交第一公路勘察设计研究院有限公司 | Thermal probe insulation board type expressway subgrade widening structure on soil-containing ice layer segment |
Non-Patent Citations (10)
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| 刘刚: "高寒地区多年冻土路基病害问题分析", 《科技致富向导》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200881A (en) * | 2015-10-21 | 2015-12-30 | 杭州江润科技有限公司 | Construction method for comprehensive treatment structure for subgrade frost damage in high cold region |
| CN105200881B (en) * | 2015-10-21 | 2017-07-14 | 正平路桥建设股份有限公司 | The construction method of High-cold regions roadbed freeze-harm Comprehensive Treatment structure |
| CN114855518A (en) * | 2021-11-18 | 2022-08-05 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Permafrost region hydrothermal protection roadbed structure |
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| CN103898824B (en) | 2017-05-31 |
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Granted publication date: 20170531 |