CN106638200B - A subgrade antifreeze and interception and drainage facility and construction method suitable for seasonal frozen land areas - Google Patents
A subgrade antifreeze and interception and drainage facility and construction method suitable for seasonal frozen land areas Download PDFInfo
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- CN106638200B CN106638200B CN201611107037.XA CN201611107037A CN106638200B CN 106638200 B CN106638200 B CN 106638200B CN 201611107037 A CN201611107037 A CN 201611107037A CN 106638200 B CN106638200 B CN 106638200B
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- 230000002528 anti-freeze Effects 0.000 title abstract description 18
- 238000010276 construction Methods 0.000 title abstract description 16
- 230000001932 seasonal effect Effects 0.000 title abstract description 6
- 239000002689 soil Substances 0.000 abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000009413 insulation Methods 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 49
- 238000005086 pumping Methods 0.000 description 14
- 239000004746 geotextile Substances 0.000 description 13
- 239000004575 stone Substances 0.000 description 9
- 230000006378 damage Effects 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
本发明提供了一种适用于季节性冻土地区的路基防冻和截排水设施及施工方法，该设施包括基层下碎石层及碎石层的反滤层，道路两侧截排水设施的反滤层、截排水层、碎石反滤层、保温层、素土层和地表植被层。施工时，在基层下铺设碎石层，在道路两侧开挖一定顺坡的沟槽，沟槽底部和侧壁铺设反滤层，在反滤层内铺砌截排水层和碎石层，在道路两侧铺设碎石层，三部分碎石层相连，将水汇集至截排水层，在道路两侧碎石层侧面和顶面铺设保温层，保温层上分层回填素土，表层植草皮。本路基防冻和排水设施通过碎石层和截排水层汇集排水，用保温层保障排水层内的水不会冻结并排水场外，保证路基在运营期间不会发生冻融破坏。
The invention provides a subgrade antifreeze and interception and drainage facility and a construction method suitable for seasonal frozen land areas. layer, interception and drainage layer, gravel filter layer, insulation layer, plain soil layer and surface vegetation layer. During construction, a gravel layer is laid under the base layer, a certain groove along the slope is excavated on both sides of the road, a reverse filter layer is laid on the bottom and side walls of the groove, and a drainage layer and a gravel layer are laid in the reverse filter layer. The gravel layer is laid on both sides of the road, the three parts of the gravel layer are connected, the water is collected to the interception and drainage layer, the insulation layer is laid on the side and top surface of the gravel layer on both sides of the road, the insulation layer is backfilled with plain soil, and the surface is planted with turf . The subgrade antifreeze and drainage facilities collect drainage through the gravel layer and the interception and drainage layer, and use the thermal insulation layer to ensure that the water in the drainage layer will not freeze and drain off the site, so that the subgrade will not be frozen and thawed during operation.
Description
Technical field
The invention belongs to seasonal frozen soil region highway or airport roadbed field of engineering technology, are related to a kind of suitable for seasonality
The antifreeze pumping equipment of permafrost region roadbed and construction method.
Background technique
Frost zone is the soil layer for freezing spring thawing winter.The area about 513.7 ten thousand in China seasonal frozen soil region
Sq-km accounts for the 53.5% of national territorial area.With China's expanding economy, in seasonal frozen soil region, the economic activity of the mankind is cured
Step up close, engineering construction is constantly carried out, and corresponding highway and airport engineering are also more and more.Frozen soil is freezing as structures ground
When knot state, intensity with higher and lower compressibility or do not have compressibility.Then bearing capacity reduction after frozen soil melts, compression
Property increase, make ground generate thaw collapse；It is unfavorable to ground on the contrary, generating frost heave again in freezing process.
Currently, common change fills out bed course and prevents freeze thawing phenomenon from occurring.Even if according to said method, still there is freeze-thaw damage in road shoulder, and
Since road surface is wider, changes and fill out that bed course project amount is larger, and cost is higher.
Summary of the invention
The object of the present invention is to provide one kind comprehensively consider seasonal frozen soil region road periphery surface water and groundwater treatment,
Structure type is simple, it is antifreeze to cut the roadbed for the Frozen Area that drainage performance is good, bed course material is few and cuts pumping equipment and construction
Method can prevent destruction of the freeze thawing to subgrade and pavement, convenient for safeguarding during operation.
The technical scheme adopted by the invention is that:
A kind of roadbed suitable for frozen ground regions it is antifreeze and cut pumping equipment, including base under be equipped with by anti-filter
The first order of layer package matches metalling, and roadbed side grooves periphery is laid with loaded filter, has paved in roadbed side grooves loaded filter
Drainage blanket is cut, both sides of the road are equipped with the second level wrapped up by loaded filter with metalling, cut on drainage blanket and be laid with the third level with broken
Then rock layers, the third level are laid with insulating layer, plain soil layer, plain soil layer upper berth are paved on insulating layer with loaded filter is laid on metalling
Build surface vegetation layer.
Another technical solution of the present invention is:
It is a kind of to build the antifreeze construction method with section pumping equipment of the above-mentioned roadbed suitable for frozen ground regions, specifically
It sequentially includes the following steps:
Step 1: being laid with one layer of first order by loaded filter package under base and match metalling, build base, then build
Surface layer；Graded broken stone thickness 20cm；
Step 2: determining the position of the frozen ground regions upper limit, be excavated with certain groove along slope, ditch in roadbed two sides
Groove width 1m gos deep into the frost zone upper limit or less 0.7m；
Step 3: the channel bottom soil body being tamped using small-size vibratory roller, the compactness in channel bottom 30cm depth reaches
92% or more, channel bottom and side wall are laid with non-woven geotextile loaded filter；
Step 4: being laid in the non-woven geotextile loaded filter of laying and cut drainage blanket, be then laid in surface layer and base two sides
Metalling is matched in the second level, and the third level is laid on cutting drainage blanket and matches metalling；
Step 5: in the third level with insulating layer is laid on metalling 5, being laid with and protect with 4 side of metalling and top surface in the second level
Warm layer；
Step 6: at away from earth's surface 20cm, compactness reaches for the backfill of insulating layer higher slice, compaction in layers clay in the trench
90% or more, formin soil layer；
Step 7: the grass planting skin on plain soil layer forms surface vegetation layer.
Roadbed antifreeze bedding course and heat preservation are cut draught engine for the first time by the present invention ought to use the anti-of frozen ground regions roadbed
Freeze in facility, has several advantages that
1. structure type is simple, cuts drainage performance and roadbed resistance to frost is good, the roadbed suitable for frozen ground regions
Antifreeze and section pumping equipment, it is easy for construction.
2. the antifreeze blotter laying depth of roadbed reduces, save material, saves cost.
3. construction technology is simple.
4. section drainage blanket prevents destruction of the surface water and groundwater to roadbed, while soil particle entrance around being avoided to cut again
Drainage blanket.
5. insulating layer plays good insulation effect, the water cut in drainage blanket is made not freeze and smoothly arrange in winter
It walks, and then prevents the freeze-thaw damage of roadbed.
6. roadbed of the invention is antifreeze and cuts pumping equipment stable structure, should not fail, there is simple and practical, maintenance cost
Low advantage.
Detailed description of the invention
Fig. 1 is that roadbed of the invention is antifreeze and cut a pumping equipment section structure diagram.
In figure, 1. first order match metalling, and 2. loaded filters, 3. sections of drainage blankets, 4. second level are matched with metalling, 5. third level
Metalling, 6. insulating layers, 7. plain soil layers, 8. surface vegetation layers, the 9. frost zone upper limits.
Specific embodiment
The present invention provides a kind of roadbed suitable for frozen ground regions it is antifreeze and cut pumping equipment and construction method,
The facility includes the loaded filter that the first order matches metalling with metalling and the package first order under base, and pumping equipment is cut in both sides of the road
Loaded filter, cut drainage blanket, rubble loaded filter, insulating layer, plain soil layer and surface vegetation layer.When construction, is laid under base
One gradation metalling excavates the centainly groove along slope in both sides of the road, and channel bottom and side wall are laid with loaded filter, in loaded filter
It paves and cuts drainage blanket and the third level with metalling, be laid with the second level in both sides of the road and match metalling, three parts metalling is connected, will
Water, which is collected to, cuts drainage blanket, is laid with insulating layer with metalling side and top surface in the both sides of the road second level, insulating layer higher slice returns
Fill out plain soil, surface layer grass planting skin.This roadbed is antifreeze to collect draining by graded broken stone layer and a section drainage blanket with pumping equipment, with heat preservation
Layer ensures that the water in drainage blanket will not freeze and drain outside the venue, guarantees that freeze-thaw damage will not occur during operation for roadbed.
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, roadbed of the present invention is antifreeze and cuts pumping equipment, it is provided under base and is equipped with by loaded filter
The first order of 2 packages matches metalling 1, and roadbed side grooves periphery is laid with loaded filter 2, paves in roadbed side grooves loaded filter 2
Have and cut drainage blanket 3, both sides of the road are equipped with the second level wrapped up by loaded filter 2 with metalling 4, cut on drainage blanket 3 and are laid with third
Graded broken stone layer 5, the third level with loaded filter is laid on metalling 5, be then laid with insulating layer 6 (herein the third level with metalling 5 with
" loaded filter " between insulating layer 6: it is to blacken a circle of overstriking in Fig. 1, only does and illustrate), plain soil layer 7 is paved on insulating layer 6,
Surface vegetation layer 8 is paved on plain soil layer 7.
Another technical solution of the present invention is:
It is a kind of to build the antifreeze construction method with section pumping equipment of the above-mentioned roadbed suitable for frozen ground regions, specifically
It sequentially includes the following steps:
Roadbed of the present invention it is antifreeze and cut a pumping equipment, have structure type should not simply fail, resistance to frost and
The advantages that cutting good drainage performance, low cost, is to maintain the important measures of frozen ground regions road quality, the following are the present invention
Construction method.
1, it in road construction, is excavated under the slot designed elevation of road at 20cm, bottom solum is compacted using vibrated roller,
After so that its lower soil layer compactness is met code requirement, then laying loaded filter excavates 20cm under road bed and is laid under base
For the first order wrapped up by non-woven geotextile loaded filter 2 with metalling 1, compacting builds roadbase and face by design requirement later
Layer, on the one hand the graded broken stone layer of non-woven geotextile package can lead to water cuts drainage blanket, on the one hand can block capillary water
Rise, reduces influence of the frost heave to roadbed when freezing in winter.
2, the position that the frost zone upper limit 9 is determined in conjunction with geological prospecting situation is excavated with certain along slope in both sides of the road
Groove, ditch 1.2~1.5m of groove width goed deep into the frost zone upper limit or less 0.7m, excavated using excavator, and the mound dug out is extremely
Ditch side certain distance, is used when to backfill；
3: the channel bottom soil body being tamped using small-size vibratory roller, the compactness in channel bottom 30cm depth is up to 92%
More than, channel bottom and side wall are laid with non-woven geotextile loaded filter 2；
Anti-filter geotextiles use non-woven geotextile that meet national standards, and geotextiles specification is not less than 300g/m2, tension is strong
Degree is not less than 6kN/m, and infiltration coefficient is 5 × 10-2~5 × 10-1cm/s.Project amount can be saved using geotextiles, effectively prevent soil
Particle, which enters, cuts drainage blanket and graded broken stone layer, and easy for construction；
4: being laid in the non-woven geotextile loaded filter 2 of laying and cut a drainage blanket 3, be then laid with the in surface layer and base two sides
Two metallings 4 are laid with the third level on cutting drainage blanket 3 and match metalling 5；Surface layer and base two sides are laid with non-woven geotextile package
On the one hand water can be led to metalling and cut drainage blanket by the second level, on the one hand can reduce both sides of the road soil frost heave to the side of road
It is destroyed to squeezing；Its role is to be led to water to cut drainage blanket and prevent soil particle from entering to cut draining for the rubble cut on drainage blanket
Layer；
Cut drainage blanket layering pile up compacting it is smooth, it is ensured that its stability, for guarantee drainage effect, cut drainage material select
The biggish big Stone of porosity is laid with, and to guarantee to cut the durability and validity of drainage blanket, selects uniaxial compressive strong
Degree is not less than 25MPa, and the metalling of 7~15cm of partial size forms, and forbids using the building stones for meeting water softening, rubble answer it is hard,
Not easy-weathering, dimming class are middle weathering, gentle breeze, non-weathering；
Graded broken stone layer 1,4 and 5 by gradation uniformly, not easy-weathering, meet water do not soften, the metalling of 2~7cm of partial size and
At lower part is laid with big Stone when paving, and top is laid with small particle rubble.
5, in the third level of non-woven geotextile package with being laid with insulating layer 6 on metalling 5, the of non-woven geotextile package
4 side of graduation two metalling and top surface are laid with insulating layer 6；Thermal insulation thermal insulation board of the insulating layer 6 using 60mm, two layers of staggeredly laying,
Preferable insulation effect can be played.
6, in the trench the backfill of insulating layer higher slice, compaction in layers element soil at away from earth's surface 20cm, compactness up to 90% with
On, formin soil layer 7；
7, the grass planting skin on plain soil layer 7 forms surface vegetation layer 8.
The contents of the present invention give an actual example listed by being not limited to, and example is a kind of form of expression of the invention, the technology of this field
Personnel's up conversion by way of reading description of the invention and taking technical solution of the present invention, such as blotter position under roadbed
Variation is set, all are covered by the claims of the invention.
Claims (8)
1. a kind of roadbed suitable for frozen ground regions is antifreeze and cuts pumping equipment, which is characterized in that match including the first order
Metalling (1), loaded filter (2) cut drainage blanket (3), the second level with metalling (4), the third level with metalling (5), insulating layer
(6), plain soil layer (7), vegetable layer (8)；
When construction, under base be laid with the first order match metalling, both sides of the road excavate centainly along slope groove, channel bottom and
Side wall is laid with loaded filter, paves in loaded filter and cuts drainage blanket and the third level with metalling, is laid with the second level in both sides of the road and matches
Metalling, three parts graded broken stone layer are connected, and form a kind of three-dimensional water discharge structural body of solid, and water is collected to and cuts drainage blanket,
Insulating layer, insulating layer higher slice backfill element soil, surface layer grass planting skin are laid with metalling side and top surface in the both sides of the road second level；
This roadbed is antifreeze and pumping equipment matches metalling with metalling, the third level with metalling, the second level by the first order and cuts draining
Layer collects draining, will not be freezed with the water in insulating layer guarantee drainage blanket and be drained outside the venue, guarantee that roadbed will not during operation
Freeze-thaw damage occurs, thus structural characterization are as follows:
It is equipped with the first order wrapped up by loaded filter (2) under base and matches metalling (1),
Roadbed side grooves periphery is laid with loaded filter (2),
It has been paved in roadbed side grooves loaded filter (2) and has cut drainage blanket (3),
Metalling (4) are matched in the upper second level wrapped up by loaded filter (2) that is equipped with of both sides of the road groove,
The upper laying third level for cutting drainage blanket (3) matches metalling (5), and the third level is with loaded filter (2) are laid on metalling (5), so
Insulating layer (6) are laid with afterwards,
Plain soil layer (7) are paved on insulating layer (6),
Surface vegetation layer (8) are paved on plain soil layer (7).
2. the roadbed as described in claim 1 suitable for frozen ground regions is antifreeze and cuts pumping equipment, which is characterized in that
The loaded filter (2) is laid with using non-woven geotextile；Geotextiles specification is not less than 300g/m2, tensile strength is not less than
6kN/m, infiltration coefficient are 5 × 10-2~5 × 10-1cm/s。
3. the roadbed as described in claim 1 suitable for frozen ground regions is antifreeze and cuts pumping equipment, which is characterized in that
The groove width of the groove is 1m, gos deep into the frost zone upper limit (9) following 0.7m.
4. the roadbed as described in claim 1 suitable for frozen ground regions is antifreeze and cuts pumping equipment, which is characterized in that
The insulating layer (6) is laid on the side and top surface that metalling (4) are matched in the second level in the frost zone upper limit (9) range above
And the third level matches the top surface of metalling (5).
5. the roadbed as described in claim 1 suitable for frozen ground regions is antifreeze and cuts pumping equipment, which is characterized in that
Construction method is realized by following steps:
Step 1: being laid with one layer of first order by loaded filter (2) package under base and match metalling (1), build base, then repair
Build surface layer；
Step 2: determining the position of the frost zone upper limit (9), be excavated with certain groove along slope, ditch groove width in roadbed two sides
1m gos deep into the frost zone upper limit (9) following 0.7m；
Step 3: the channel bottom soil body being tamped using small-size vibratory roller, the compactness in channel bottom 30cm depth is up to 92%
More than, channel bottom and side wall are laid with loaded filter (2)；
Step 4: being laid in the loaded filter (2) of laying and cut drainage blanket (3), be then laid with the second level in surface layer and base two sides and match
Metalling (4) is laid with the third level on cutting drainage blanket (3) and matches metalling (5)；
Step 5: in the third level with insulating layer (6) are laid on metalling (5), being spread in the second level with metalling (4) side and top surface
If insulating layer (6)；
Step 6: the backfill of insulating layer (6) higher slice, compaction in layers element soil is at away from earth's surface 20cm in the trench, and compactness is up to 90%
More than, formin soil layer (7)；
Step 7: the grass planting skin on plain soil layer (7) is formed surface vegetation layer (8).
6. the roadbed as claimed in claim 5 suitable for frozen ground regions is antifreeze and cuts pumping equipment, which is characterized in that
It cuts drainage blanket (3) in the step 4 to form using the metalling of 7~15cm of partial size, it is desirable that uniaxial compressive strength is not less than
20MPa。
7. the roadbed as claimed in claim 5 suitable for frozen ground regions is antifreeze and cuts pumping equipment, which is characterized in that
The first order is adopted with metalling (4) and the third level with metalling (5) with the second level in metalling (1), step 4 in the step 1
It is paved with 2~7cm of partial size, graded broken stone, lower part is laid with big Stone when paving, and top is laid with small particle rubble.
8. the roadbed as claimed in claim 5 suitable for frozen ground regions is antifreeze and cuts pumping equipment, which is characterized in that
Insulating layer (6) forming with a thickness of the thermal insulation thermal insulation board of 60mm by two layers of laying that interlocks in the step 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107037.XA CN106638200B (en) | 2016-12-06 | 2016-12-06 | A subgrade antifreeze and interception and drainage facility and construction method suitable for seasonal frozen land areas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611107037.XA CN106638200B (en) | 2016-12-06 | 2016-12-06 | A subgrade antifreeze and interception and drainage facility and construction method suitable for seasonal frozen land areas |
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| CN106638200B true CN106638200B (en) | 2019-01-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108842561B (en) * | 2018-06-22 | 2020-05-12 | 宁夏荣光电力工程有限公司 | Construction method of anti-cracking drainage road |
| CN109056786A (en) * | 2018-08-15 | 2018-12-21 | 中冶南方工程技术有限公司 | Face upward inclined road shoulder wall water drainage behind the wall system and construction method |
| CN114606823B (en) * | 2020-12-09 | 2023-11-28 | 上海力阳道路加固科技股份有限公司 | Cement-based permeable concrete pavement structure and paving method thereof |
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| CN102877543A (en) * | 2012-10-24 | 2013-01-16 | 中铁西北科学研究院有限公司 | Heat-preservation blind trench facility applicable to multi-year permafrost region and construction method |
| KR101230730B1 (en) * | 2012-06-21 | 2013-02-07 | 김형태 | Ecology block based vegetation and construction method thereof |
| CN202730544U (en) * | 2012-08-08 | 2013-02-13 | 中铁第一勘察设计院集团有限公司 | Frost heave prevention roadbed structure in deep seasonal permafrost region |
| CN203145030U (en) * | 2013-03-22 | 2013-08-21 | 中交第一公路勘察设计研究院有限公司 | Water cut-off and drainage system for permafrost tunnel side upward slope and cutting slope |
| CN105297572A (en) * | 2015-10-10 | 2016-02-03 | 青海省交通科学研究院 | Permafrost fill construction method |
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2016
- 2016-12-06 CN CN201611107037.XA patent/CN106638200B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101230730B1 (en) * | 2012-06-21 | 2013-02-07 | 김형태 | Ecology block based vegetation and construction method thereof |
| CN202730544U (en) * | 2012-08-08 | 2013-02-13 | 中铁第一勘察设计院集团有限公司 | Frost heave prevention roadbed structure in deep seasonal permafrost region |
| CN102877543A (en) * | 2012-10-24 | 2013-01-16 | 中铁西北科学研究院有限公司 | Heat-preservation blind trench facility applicable to multi-year permafrost region and construction method |
| CN203145030U (en) * | 2013-03-22 | 2013-08-21 | 中交第一公路勘察设计研究院有限公司 | Water cut-off and drainage system for permafrost tunnel side upward slope and cutting slope |
| CN105297572A (en) * | 2015-10-10 | 2016-02-03 | 青海省交通科学研究院 | Permafrost fill construction method |
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