CN102877543B - Heat-preservation blind trench facility applicable to multi-year permafrost region and construction method - Google Patents
Heat-preservation blind trench facility applicable to multi-year permafrost region and construction method Download PDFInfo
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- CN102877543B CN102877543B CN201210408875.6A CN201210408875A CN102877543B CN 102877543 B CN102877543 B CN 102877543B CN 201210408875 A CN201210408875 A CN 201210408875A CN 102877543 B CN102877543 B CN 102877543B
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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
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Abstract
The invention provides a heat-preservation blind trench facility applicable to a multi-year permafrost region and a construction method. The facility comprises a reversed filter layer which is internally paved with a water collection and discharging layer and a crushed stone layer; and the reversed filter layer is provided with a heat-preservation layer, a clay layer and a ground surface plane layer. In a construction process, a ditch with a certain slope is dug on the multi-year permafrost region; the bottom and the side wall of the ditch are paved with reversed filter geotechnical cloth; after a space enclosed by the geotechnical cloth is internally filled with the water collection and discharging layer and the crushed stone layer, the reversed filter geotechnical cloth is paved to form the reversed filter layer with the reversed filter geotechnical cloth paved in the ditch; clay is backfilled on the heat-preservation layer, and grasses are planted after the clay is compacted; and the heat-preservation blind trench facility applicable to the multi-year permafrost region is established. The heat-preservation blind trench facility is provided with the reversed filter layer and the water collection and discharging layer to stop and discharge water; the heat-preservation layer is used for guaranteeing that the water on a frozen layer in the reversed filter layer is not frozen and is smoothly discharged; and heat corrosion effect of the water on the frozen layer is stopped, and the smooth operation and operation period maintenance of engineering construction are guaranteed.
Description
Technical field
The invention belongs to Permafrost Area field of engineering technology, relate to a kind of section drainage being applicable to Permafrost Area surface water and suprapermafrost water, in particular to a kind of insulation french drain facility being applicable to Permafrost Area, damming and dredging excretion of the suprapermafrost water in the engineering field of Permafrost Area can be widely used in; The invention still further relates to a kind of construction method of building this insulation french drain facility.
Background technology
Suprapermafrost water refers to the underground water in the active layer of permafrost top, is commonly called as and swims.Normal glaciation cold season, warm seasonal thawing Cheng Shui; When being entirely in a liquid state when swimming, there is table, and so that frozen crust is for water proof base plate for many years, formation is dived under water.When winter, its top was freezed, the part freezed becomes continuous print water-proof top plate, and the water of the non-frozen fraction in bottom just has the character of artesian water.Suprapermafrost water is often distributed in the low-lying place of Permafrost Area landform or broad mild watershed area, and bury more shallow (general about 0.5 meter), the water yield is little, is often fresh water.The thermal etching effect of suprapermafrost water to engineering construction endangers a stable main cause of engineering construction.
Conventional gutter and gear low bank between fields or in shallow water stop suprapermafrost water at present.But these two kinds of facilities are mainly used in stoping surface water to the thermal etching effect of engineering construction, cannot stop, and easily freeze in dead season the safety forming the harm engineering constructions such as ice cone for the suprapermafrost water in the following soil body in earth's surface.
China Permafrost Area is mainly distributed in the Xing'anling mountains of high latitude area, northeast and song-Nen plain is northern and western high mountain and Qinghai-Tibet Platean.In recent years in order to develop economy, the people's livelihood in these areas, country strengthens the engineering construction dynamics to this region year by year, has built large quantities of infrastructure comprising highway, railway etc.To at the engineering construction built and build, how to stop the thermal etching effect of suprapermafrost water, ensureing carrying out smoothly and maintenance during run of engineering construction, is a very important problem.
Summary of the invention
The object of this invention is to provide a kind of insulation french drain facility being applicable to Permafrost Area, the thermal etching effect of suprapermafrost water can be stoped, ensure carrying out smoothly and safeguarding during runing of engineering construction.
Another object of the present invention is to provide a kind of construction method of above-mentioned insulation french drain facility.
For achieving the above object, the technical solution adopted in the present invention is: a kind of insulation french drain facility being applicable to Permafrost Area, comprise the barrel-shaped loaded filter kept flat, collection drainage blanket and macadam has been paved successively in loaded filter, from the bottom up, loaded filter is provided with insulation layer, insulation layer is coated with clay layer, clay layer is coated with surface vegetation layer.
Another technical scheme of the present invention is: a kind ofly build the above-mentioned construction method being applicable to the insulation french drain facility of Permafrost Area, specifically carries out according to the following steps:
Step 1: have certain irrigation canals and ditches along slope at Permafrost Area excavation, the outlet of these irrigation canals and ditches is positioned at the river place that is easy to draining or away from engineering construction place;
Step 2: lay anti-filter geotextiles at trench bottom and sidewall, the anti-filter geotextiles end face that trench sidewall is laid and the distance on earth's surface are 1 ~ 1.2m;
Step 3: lay collection drainage blanket in the space that the anti-filter geotextiles of laying surrounds, then on collection drainage blanket, paving thickness is that the macadam of 10 ~ 20cm carries out levelling, after levelling, macadam is laid anti-filter geotextiles, the anti-filter geotextiles that the anti-filter geotextiles that macadam is laid and trench bottom and trench sidewall are laid forms the barrel-shaped loaded filter kept flat jointly, then lays insulation layer on loaded filter end face;
Step 4: backfill cohesive soil on insulation layer, compacting, forms the clay layer that equal with earth's surface, compactness reaches more than 93%;
Step 5: grass planting on clay layer, forms surface vegetation layer, thus builds up the insulation french drain facility being applicable to Permafrost Area.
The present invention is incubated the beneficial effect of french drain facility:
1) the resistance drainage of Permafrost Area is applicable to, successful, easy construction.
2) material adopted and component are standard material, with low cost and be easy to buy.
3) construction technology is simple to operation.
4) around having completely cut off again the while that loaded filter allowing suprapermafrost water converge in french drain, grogs infilters collection drainage blanket.
5) insulation layer can play good insulation effect, makes the suprapermafrost water converged in irrigation canals and ditches to freeze and can drain smoothly.
6) surface vegetation layer considers environmental requirement, is conducive to the ecological homeostasis safeguarding Permafrost Area.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is incubated french drain facility.
Fig. 2 is the construction flow chart of the french drain of insulation shown in Fig. 1 facility.
In figure: 1. loaded filter, 2. collect drainage blanket, 3. macadam, 4. insulation layer, 5. clay layer, 6. surface vegetation layer.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
For how to stop and to drain suprapermafrost water, the present invention proposes a kind of structure insulation french drain facility being applicable to Permafrost Area as shown in Figure 1, comprise the barrel-shaped loaded filter 1 kept flat, collection drainage blanket 2 and macadam 3 has been paved successively in loaded filter 1, from the bottom up, loaded filter 1 is provided with insulation layer 4, insulation layer 4 is coated with clay layer 5, clay layer 5 is coated with surface vegetation layer 6.
Present invention also offers a kind of construction method of above-mentioned insulation french drain facility, its construction flow chart as shown in Figure 2, specifically carries out according to the following steps:
Step 1: Permafrost Area excavation width be 1 ~ 1.2m, bottom gos deep into the irrigation canals and ditches of frozen soil upper limit 1 ~ 1.5m, the irrigation canals and ditches of excavation ensure certain suitable slope, and outlet is positioned at the river place that is easy to draining or away from engineering construction place.Excavation can adopt mechanical equivalent of light excavation, frozen soil upper limit is by consulting local geologic information or boring confirms, before excavation, reply scene is investigated, investigate thoroughly the position of the facilities such as the oil pipeline of annex, optical cable, cable, protection is noted in construction, guarantee the safety of above facility, rear mark of having constructed exposes can identification;
Step 2: lay anti-filter geotextiles at trench bottom and sidewall, the anti-filter geotextiles end face that trench sidewall is laid and the distance on earth's surface are 1 ~ 1.2m;
Anti-filter geotextiles adopt meet relevant national standard by the water permeability geosynthetics of synthetic fibers by acupuncture or braiding.The advantage such as use this anti-filter geotextiles to have to reduce engineering quantity, easy construction, speed fast.
The distance on the anti-filter geotextiles end face that trench sidewall is laid and earth's surface is 1 ~ 1.2m, is for laying insulation layer and backfill clay layer, ensureing to reach insulation effect.
Step 3: lay collection drainage blanket 2 in the space that the anti-filter geotextiles of laying surrounds, then on collection drainage blanket 2, paving thickness is that the macadam 3 of 10 ~ 20cm carries out levelling, levelling complete after, macadam 3 is laid anti-filter geotextiles, the anti-filter geotextiles that the anti-filter geotextiles that macadam 3 is laid and trench bottom and trench sidewall are laid forms the barrel-shaped loaded filter 1 kept flat jointly, warming plate is laid again on loaded filter 1 end face, form insulation layer 4, make to collect drainage blanket 2, macadam 3, the height sum of insulation layer 4 and loaded filter 1 top layer is equal with the height of loaded filter 1 sidewall,
Leveling need be piled up in collection drainage blanket 2 surface, and collection drainage blanket 2 adopts macrovoid material-paving to form, and its inside has larger porosity, ensures the circulation of water storage and water body.Paving collection drainage blanket 2 to reduce costs preferred chunk footpath is 200 ~ 300mm, terminal compression strength of the single axle is not less than 30Mpa block stone, forbidding to adopt severely-weathered block of stone, block stone stone matter should evenly, not easy-weathering, free from flaw.
Macadam 3 is formed by the metalling of uniform particle diameter, not easy-weathering, particle diameter 5 ~ 20mm, and during laying, the larger rubble of particle diameter is laid in bottom, up becomes the rubble that particle diameter is little, is convenient to macadam 3 surface evening.
Warming plate adopts the warming plate of thickness 50 ~ 60mm, preferred XPS(extrusion molding polystyrene polyfoam for heat insulation) warming plate, staggered laying is two-layer up and down, forms insulation layer 4.Adopt the thick warming plate of thickness 50 ~ 60mm can play enough insulation effects.
Step 4: backfill cohesive soil on insulation layer 4, and carry out compacting with machinery, guarantee that compactness reaches more than 93%, form the clay layer 5 equal with earth's surface; Cohesive soil adopts the pure clay meeting relevant specification of country;
The compactness of the clay layer 5 of compacting reaches more than 93%, can play effective impermeable role, protects better at the engineering construction built and build.
Step 5: grass planting on clay layer 5, forms surface vegetation layer 6, thus builds up insulation french drain facility.
Grass seeds used during grass planting adopts the drought-enduring low temperature resistant plant be easy in Permafrost Area growth.
After the completion of this facility, suprapermafrost water can pass through loaded filter 1 and converges in french drain, ensure that the water body converged in french drain can not freeze by the insulation layer 4 on loaded filter 1 top, make it present fluid state, be expelled to river along slope by exit or away from engineering construction position along irrigation canals and ditches.
This facility is repaired due to the ecological disruption caused of constructing by surface vegetation layer, therefore can not destroy the ecological homeostasis of Permafrost Area.Meanwhile, in insulation layer 4 pairs of french drains, water body heat insulation effect is good, and vegetable layer also plays certain insulation effect to ever-frozen ground.
This insulation french drain facility can not only stop suprapermafrost water and surface water effectively, and preventing suprapermafrost water from freezing to form the geological disease such as heaving on earth's surface affects the stable of engineering construction, and heat insulation effect is good, cuts drainage performance strong; And according to engineering site situation, suprapermafrost water can be discharged into appointed place, quick construction is convenient; Meanwhile, taken into full account the environmental issue of Permafrost Area, the ecological homeostasis of Permafrost Area can not have been destroyed, meet national requirements for environmental protection.
Claims (10)
1. one kind is applicable to the insulation french drain facility of Permafrost Area, it is characterized in that, comprise the barrel-shaped loaded filter (1) kept flat, in loaded filter (1), collection drainage blanket (2) and macadam (3) are paved successively from the bottom up, loaded filter (1) end face is provided with insulation layer (4), insulation layer (4) is coated with clay layer (5), clay layer (5) is coated with surface vegetation layer (6), the particle diameter 5 ~ 20mm of macadam (3) medium stone; The two-layer warming plate that insulation layer (4) is 50 ~ 60mm by the thickness of staggered laying up and down forms.
2. be applicable to the insulation french drain facility of Permafrost Area as claimed in claim 1, it is characterized in that, the height of described loaded filter (1) sidewall equal collection drainage blanket (2) highly, loaded filter (1) top layer thickness, macadam (3) height and insulation layer (4) height sum.
3. be applicable to the insulation french drain facility of Permafrost Area as claimed in claim 1 or 2, it is characterized in that, described loaded filter (1) adopts anti-filter geotextile laying to form.
4. be applicable to the insulation french drain facility of Permafrost Area as claimed in claim 3, it is characterized in that, described anti-filter geotextiles is by the water permeability geosynthetics of synthetic fibers by acupuncture or braiding.
5. build a construction method for the insulation french drain facility being applicable to Permafrost Area described in claim 1, it is characterized in that, this construction method is specifically carried out according to the following steps:
Step 1: have certain irrigation canals and ditches along slope at Permafrost Area excavation, the outlet of these irrigation canals and ditches is positioned at the river place that is easy to draining or away from engineering construction place;
Step 2: lay anti-filter geotextiles at trench bottom and sidewall, the anti-filter geotextiles end face that trench sidewall is laid and the distance on earth's surface are 1 ~ 1.2m;
Step 3: lay collection drainage blanket (2) in the space that the anti-filter geotextiles of laying surrounds, then on collection drainage blanket (2), paving the macadam (3) that thickness is 10 ~ 20cm carries out levelling, after levelling, in macadam (3) upper laying anti-filter geotextiles, the anti-filter geotextiles that the anti-filter geotextiles that macadam (3) is upper to be laid and trench bottom and trench sidewall are laid forms the barrel-shaped loaded filter (1) kept flat jointly, then lays insulation layer (4) on loaded filter (1) end face;
Step 4: backfill cohesive soil, compacting on insulation layer (4), forms the clay layer (5) that equal with earth's surface, compactness reaches more than 93%;
Step 5: at the upper grass planting of clay layer (5), form surface vegetation layer (6), thus build up the insulation french drain facility being applicable to Permafrost Area.
6. be applicable to the construction method of the insulation french drain facility of Permafrost Area as claimed in claim 5, it is characterized in that, in described step 1, the width of irrigation canals and ditches is 1 ~ 1.2m, bottom gos deep into frozen soil upper limit 1 ~ 1.5m.
7. be applicable to the construction method of the insulation french drain facility of Permafrost Area as claimed in claim 5, it is characterized in that, collect drainage blanket (2) in described step 3 to adopt the block stone of block footpath 200 ~ 300mm to pave to form, block stone terminal compression strength of the single axle is not less than 30MPa.
8. be applicable to the construction method of the insulation french drain facility of Permafrost Area as claimed in claim 5, it is characterized in that, described step 3 medium stone layer (3) adopts particle diameter 5 ~ 20mm, dysgeogenous metalling forms, when paving, the larger rubble of particle diameter is laid in bottom, up uses the rubble that particle diameter is little.
9. be applicable to the construction method of the insulation french drain facility of Permafrost Area as claimed in claim 5, it is characterized in that, the two-layer warming plate that in described step 3, insulation layer (4) is 50 ~ 60mm by the thickness of staggered laying up and down forms.
10. be applicable to the construction method of the insulation french drain facility of Permafrost Area as claimed in claim 5, it is characterized in that, collect in described step 3 drainage blanket (2) highly, macadam (3) highly, insulation layer (4) height is equal with the height of loaded filter (1) sidewall with the height sum of loaded filter (1) top layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408875.6A CN102877543B (en) | 2012-10-24 | 2012-10-24 | Heat-preservation blind trench facility applicable to multi-year permafrost region and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408875.6A CN102877543B (en) | 2012-10-24 | 2012-10-24 | Heat-preservation blind trench facility applicable to multi-year permafrost region and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102877543A CN102877543A (en) | 2013-01-16 |
| CN102877543B true CN102877543B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210408875.6A Expired - Fee Related CN102877543B (en) | 2012-10-24 | 2012-10-24 | Heat-preservation blind trench facility applicable to multi-year permafrost region and construction method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638200B (en) * | 2016-12-06 | 2019-01-25 | 同济大学 | A kind of roadbed suitable for frozen ground regions is antifreeze and cuts pumping equipment 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 |
| CN113235714B (en) * | 2021-04-29 | 2022-08-09 | 舟山市宏达交通工程有限责任公司 | Gravel blind ditch reverse-filtration geotextile laying method |
| CN114223344B (en) * | 2022-02-24 | 2022-05-13 | 中国煤炭地质总局勘查研究总院 | Frozen soil layer repairing method for alpine mining areas in plateau |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11152785A (en) * | 1997-11-21 | 1999-06-08 | Haneda Hume Pipe Co Ltd | Infiltration, facility having water-retention structure |
| CN201099920Y (en) * | 2007-09-30 | 2008-08-13 | 中国科学院寒区旱区环境与工程研究所 | Heat preservation collecting well |
| CN102518052A (en) * | 2011-11-28 | 2012-06-27 | 长沙理工大学 | Hidden flexible drainage structure of highway side slope |
| CN202850011U (en) * | 2012-10-24 | 2013-04-03 | 中铁西北科学研究院有限公司 | Thermal insulation blind ditch facility suitable for permafrost regions |
-
2012
- 2012-10-24 CN CN201210408875.6A patent/CN102877543B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11152785A (en) * | 1997-11-21 | 1999-06-08 | Haneda Hume Pipe Co Ltd | Infiltration, facility having water-retention structure |
| CN201099920Y (en) * | 2007-09-30 | 2008-08-13 | 中国科学院寒区旱区环境与工程研究所 | Heat preservation collecting well |
| CN102518052A (en) * | 2011-11-28 | 2012-06-27 | 长沙理工大学 | Hidden flexible drainage structure of highway side slope |
| CN202850011U (en) * | 2012-10-24 | 2013-04-03 | 中铁西北科学研究院有限公司 | Thermal insulation blind ditch facility suitable for permafrost regions |
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| CN102877543A (en) | 2013-01-16 |
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Granted publication date: 20150513 Termination date: 20211024 |