CN102877543A - 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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- CN102877543A CN102877543A CN2012104088756A CN201210408875A CN102877543A CN 102877543 A CN102877543 A CN 102877543A CN 2012104088756 A CN2012104088756 A CN 2012104088756A CN 201210408875 A CN201210408875 A CN 201210408875A CN 102877543 A CN102877543 A CN 102877543A
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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
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- 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 the Permafrost Area field of engineering technology, relate to a kind of drainage that cuts that is applicable to Permafrost Area surface water and suprapermafrost water, be particularly related to a kind of insulation french drain facility that is applicable to Permafrost Area, can be widely used in the damming and dredge drainage of suprapermafrost water in the Permafrost Area engineering field; The invention still further relates to a kind of job practices of building this insulation french drain facility.
Background technology
Suprapermafrost water refers to the underground water in the active layer of ever-frozen ground layer top, is commonly called as and swims.Normal glaciation cold season, warm seasonal thawing Cheng Shui; When swimming entirely to be in a liquid state, have table, and so that frozen crust is as the water proof base plate for many years, formation is dived under water.When winter, freezed on its top, the part of freezing became continuous water proof top board, and the water that part is not freezed in the bottom just has the character of artesian water.Suprapermafrost water often is distributed in the low-lying place of Permafrost Area landform or broad mild watershed area, buries more shallow (general about 0.5 meter), and the water yield is little, often is fresh water.Suprapermafrost water is a stable main cause of harm engineering construction to the thermal etching effect of engineering construction.
Gutter at present commonly used and gear low bank between fields or in shallow water stop suprapermafrost water.But these two kinds of facilities are mainly used in stoping surface water to the thermal etching effect of engineering construction, can't stop for the suprapermafrost water in the following soil body in earth's surface, and freeze easily to form the safety of the harm engineering constructions such as ice cone in dead season.
China's Permafrost Area mainly is distributed in the Xing'anling mountains of northeast high latitude area and song-Nen plain is northern and western high mountain and Qinghai-Tibet Platean.In order to develop these regional economy, the people's livelihood, country strengthens year by year to this regional engineering construction dynamics, has built large quantities of infrastructures that comprise highway, railway etc. in recent years.To at the engineering construction of building and building, how to stop the thermal etching effect of suprapermafrost water, guarantee engineering construction carry out smoothly and run during maintenance, be a very important problem.
Summary of the invention
The purpose of this invention is to provide a kind of insulation french drain facility that is applicable to Permafrost Area, can stop the thermal etching effect of suprapermafrost water, guarantee engineering construction carry out smoothly and run during maintenance.
Another object of the present invention provides a kind of job practices 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 that is applicable to Permafrost Area, comprise the barrel-shaped loaded filter that keeps flat, in the loaded filter, paved successively collection drainage blanket and macadam from the bottom up, loaded filter is provided with insulation layer, be coated with clay layer on the insulation layer, be coated with the surface vegetation layer on the clay layer.
Another technical scheme of the present invention is: a kind ofly build the above-mentioned job practices that is applicable to the insulation french drain facility of Permafrost Area, specifically carry out according to the following steps:
Step 1: at Permafrost Area excavation certain irrigation canals and ditches along the slope are arranged, the outlet of these irrigation canals and ditches is positioned at the place, river that is easy to draining or away from the engineering construction place;
Step 2: lay the anti-filter geotextiles in irrigation canals and ditches bottom and sidewall, making the anti-filter geotextiles end face of trench sidewall laying and the distance on earth's surface is 1～1.2m;
Step 3: in the space that the anti-filter geotextiles of laying surrounds, lay the collection drainage blanket, then paving thickness at the collection drainage blanket is that the macadam of 10～20cm carries out levelling, after the levelling, lay the anti-filter geotextiles at macadam, the barrel-shaped loaded filter that the common formation of anti-filter geotextiles that the anti-filter geotextiles of laying on the macadam and irrigation canals and ditches bottom and trench sidewall are laid keeps flat is laid insulation layer at the loaded filter end face again;
Step 4: backfill cohesive soil on insulation layer, compacting forms equal with the earth's surface, compactness and reaches the clay layer more than 93%;
Step 5: grass planting on clay layer forms the surface vegetation layer, thereby builds up the insulation french drain facility that is applicable to Permafrost Area.
The present invention is incubated the beneficial effect of french drain facility:
1) is applicable to the resistance drainage of Permafrost Area, successful, easy construction.
2) material and the member that adopt are standard material, and be with low cost and be easy to buy.
3) construction technology is simple to operation.
4) grogs infiltered the collection drainage blanket around loaded filter can allow suprapermafrost water converge in the french drain to have completely cut off again simultaneously.
5) insulation layer can play good insulation effect, so that the suprapermafrost water that converges in the irrigation canals and ditches can not freeze and can drain smoothly.
6) the surface vegetation layer has been considered environmental requirement, is conducive to safeguard the ecological homeostasis of Permafrost Area.
Description of drawings
Fig. 1 is the structural representation that the present invention is incubated the french drain facility.
Fig. 2 is the construction flow chart of insulation french drain facility shown in Figure 1.
Among the figure: 1. loaded filter, 2. collection drainage blanket, 3. macadam, 4. insulation layer, 5. clay layer, 6. surface vegetation layer.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
For how to stop and drain suprapermafrost water, the present invention proposes a kind of structure insulation french drain facility that is applicable to Permafrost Area as shown in Figure 1, comprise the barrel-shaped loaded filter 1 that keeps flat, in the loaded filter 1, paved successively collection drainage blanket 2 and macadam 3 from the bottom up, loaded filter 1 is provided with insulation layer 4, be coated with clay layer 5 on the insulation layer 4, be coated with surface vegetation layer 6 on the clay layer 5.
The present invention also provides a kind of job practices of above-mentioned insulation french drain facility, and its construction flow chart specifically carries out as shown in Figure 2 according to the following steps:
Step 1: be the irrigation canals and ditches that frozen soil upper limit 1～1.5m is goed deep in 1～1.2m, bottom at the Permafrost Area excavation width, the irrigation canals and ditches of excavation ensure certain for the slope, and outlet is positioned at the place, river that is easy to draining or away from the engineering construction place.Excavation can adopt mechanical equivalent of light excavation, frozen soil upper limit can be confirmed by consulting local geologic information or boring, the reply scene is investigated before the excavation, investigate thoroughly the position of the facility such as oil pipeline, optical cable, cable of annex, in construction, note protection, guarantee the safety of above facility, but sign exposed identification after construction was finished;
Step 2: lay the anti-filter geotextiles in irrigation canals and ditches bottom and sidewall, making the anti-filter geotextiles end face of trench sidewall laying and the distance on earth's surface is 1～1.2m;
The anti-filter geotextiles adopts the water permeability geosynthetics that is formed by acupuncture or braiding by synthetic fibers meet relevant national standard.Use this anti-filter geotextiles to have to reduce the advantages such as engineering quantity, easy construction, speed be fast.
The anti-filter geotextiles end face that trench sidewall is laid and the distance on earth's surface are 1～1.2m, are for laying insulation layer and backfill clay layer, guaranteeing to reach insulation effect.
Step 3: in the space that the anti-filter geotextiles of laying surrounds, lay collection drainage blanket 2, then paving thickness at collection drainage blanket 2 is that the macadam 3 of 10～20cm carries out levelling, after levelling is finished, lay the anti-filter geotextiles at macadam 3, the barrel-shaped loaded filter 1 that the common formation of anti-filter geotextiles that the anti-filter geotextiles of laying on the macadam 3 and irrigation canals and ditches bottom and trench sidewall are laid keeps flat, lay warming plate at loaded filter 1 end face again, form insulation layer 4, so that collection drainage blanket 2, macadam 3, the height sum of insulation layer 4 and loaded filter 1 top layer equates with the height of loaded filter 1 sidewall;
Leveling need be piled up in collection drainage blanket 2 surfaces, and collection drainage blanket 2 adopts the macrovoid material-paving to form, and its inside has larger porosity, guarantees the circulation of water storage and water body.Directly be that the piece stone that 200～300mm, terminal compression strength of the single axle are not less than 30Mpa is paved collection drainage blanket 2 in order to reduce the cost preferred chunk, forbid to adopt severely-weathered block of stone, piece stone stone matter should be evenly, not easy-weathering, free from flaw.
Macadam 3 is not by uniform particle diameter, the metalling of easy-weathering, particle diameter 5～20mm forms, and the larger rubble of particle diameter is laid in the bottom during laying, up becomes the little rubble of particle diameter, is convenient to macadam 3 surface evenings.
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, and guarantee that compactness reaches more than 93%, form the clay layer 5 equal with the earth's surface; Cohesive soil adopts the pure clay that meets 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 of building and building.
Step 5: grass planting on clay layer 5 forms surface vegetation layer 6, thereby builds up insulation french drain facility.
Grass seeds used during grass planting adopts the drought-enduring low temperature resistant plant that is easy in the Permafrost Area growth.
After the completion of this facility, suprapermafrost water can see through loaded filter 1 and converge in french drain, insulation layer 4 by loaded filter 1 top guarantees that the water body that converges in the french drains can not freeze, and makes it present fluid state, is expelled to the river along the slope by the exit or away from the engineering construction position along irrigation canals and ditches.
This facility to because the ecological disruption that construction causes is repaired, therefore can not destroy the ecological homeostasis of Permafrost Area by the surface vegetation layer.Simultaneously, the water body heat insulation effect is good in 4 pairs of french drains of insulation layer, and vegetable layer also plays certain insulation effect to ever-frozen ground.
This insulation french drain facility not only can be stopped suprapermafrost water and surface water effectively, prevents that suprapermafrost water from freezing to form the stable of the geology harm influence engineering construction such as heaving on the earth's surface, and heat insulation effect is good, and it is strong to cut drainage performance; And can suprapermafrost water be discharged into the appointed place according to the engineering site situation, quick construction is convenient; Simultaneously, take into full account the environmental issue of Permafrost Area, can not destroy the ecological homeostasis of Permafrost Area, met national requirements for environmental protection.
Claims (10)
1. insulation french drain facility that is applicable to Permafrost Area, it is characterized in that, comprise the barrel-shaped loaded filter (1) that keeps flat, in the loaded filter (1), paved successively collection drainage blanket (2) and macadam (3) from the bottom up, loaded filter (1) is provided with insulation layer (4), be coated with clay layer (5) on the insulation layer (4), be coated with surface vegetation layer (6) on the clay layer (5).
2. the insulation french drain facility that is applicable to Permafrost Area as claimed in claim 1, it is characterized in that, the height of described loaded filter (1) sidewall equal to collect drainage blanket (2) highly, loaded filter (1) top layer thickness, macadam (3) height and insulation layer (4) height sum.
3. the insulation french drain facility that is applicable to Permafrost Area as claimed in claim 1 or 2 is characterized in that, described loaded filter (1) adopts the anti-filter geotextile laying to form.
4. the insulation french drain facility that is applicable to Permafrost Area as claimed in claim 3 is characterized in that, described anti-filter geotextiles is the water permeability geosynthetics that is formed by acupuncture or braiding by synthetic fibers.
5. build the described job practices that is applicable to the insulation french drain facility of Permafrost Area of claim 1 for one kind, it is characterized in that this job practices is specifically carried out according to the following steps:
Step 1: at Permafrost Area excavation certain irrigation canals and ditches along the slope are arranged, the outlet of these irrigation canals and ditches is positioned at the place, river that is easy to draining or away from the engineering construction place;
Step 2: lay the anti-filter geotextiles in irrigation canals and ditches bottom and sidewall, making the anti-filter geotextiles end face of trench sidewall laying and the distance on earth's surface is 1～1.2m;
Step 3: in the space that the anti-filter geotextiles of laying surrounds, lay collection drainage blanket (2), then pave the macadam that thickness is 10～20cm (3) at collection drainage blanket (2) and carry out levelling, after the levelling, lay the anti-filter geotextiles at macadam (3), the anti-filter geotextiles that the upper anti-filter geotextiles of laying of macadam (3) and irrigation canals and ditches bottom and trench sidewall are laid consists of the barrel-shaped loaded filter (1) that keeps flat jointly, lays insulation layer (4) at loaded filter (1) end face again;
Step 4: at the upper backfill cohesive soil of insulation layer (4), compacting forms equal with the earth's surface, compactness and reaches the clay layer (5) more than 93%;
Step 5: at the upper grass planting of clay layer (5), form surface vegetation layer (6), thereby build up the insulation french drain facility that is applicable to Permafrost Area.
6. the job practices that is applicable to the insulation french drain facility of Permafrost Area as claimed in claim 5 is characterized in that, the width of irrigation canals and ditches is that frozen soil upper limit 1～1.5m is goed deep in 1～1.2m, bottom in the described step 1.
7. the job practices that is applicable to the insulation french drain facility of Permafrost Area as claimed in claim 5, it is characterized in that, collect piece stone that drainage blanket (2) adopts piece footpath 200～300mm in the described step 3 and pave and form, piece stone terminal compression strength of the single axle is not less than 30MPa.
8. the job practices that is applicable to 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 to form, the larger rubble of particle diameter is laid in the bottom when paving, and up uses the little rubble of particle diameter.
9. the job practices that is applicable to the insulation french drain facility of Permafrost Area as claimed in claim 5 is characterized in that, the thickness that insulation layer in the described step 3 (4) is laid by interlocking up and down is that the two-layer warming plate of 50～60mm forms.
10. the job practices that is applicable to the insulation french drain facility of Permafrost Area as claimed in claim 5, it is characterized in that, collect in the described step 3 drainage blanket (2) highly, macadam (3) highly, the height sum of insulation layer (4) height and loaded filter (1) top layer equates with the height of loaded filter (1) sidewall.
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 true CN102877543A (en) | 2013-01-16 |
| CN102877543B CN102877543B (en) | 2015-05-13 |
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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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| CN (1) | CN102877543B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638200A (en) * | 2016-12-06 | 2017-05-10 | 同济大学 | Roadbed antifreezing and drained water interception facility and construction method suitable for seasonally frozen-ground region |
| CN113235714A (en) * | 2021-04-29 | 2021-08-10 | 舟山市宏达交通工程有限责任公司 | Gravel blind ditch reverse-filtration geotextile laying method |
| CN114223344A (en) * | 2022-02-24 | 2022-03-25 | 中国煤炭地质总局勘查研究总院 | Frozen soil layer repairing method for alpine mining area in plateau |
| CN114606823A (en) * | 2020-12-09 | 2022-06-10 | 上海力阳道路加固科技股份有限公司 | Cement-based pervious concrete pavement structure and laying method thereof |
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| 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 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638200A (en) * | 2016-12-06 | 2017-05-10 | 同济大学 | Roadbed antifreezing and drained water interception facility and construction method suitable for seasonally frozen-ground region |
| 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 |
| CN114606823A (en) * | 2020-12-09 | 2022-06-10 | 上海力阳道路加固科技股份有限公司 | Cement-based pervious concrete pavement structure and laying method thereof |
| 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 |
| CN113235714A (en) * | 2021-04-29 | 2021-08-10 | 舟山市宏达交通工程有限责任公司 | Gravel blind ditch reverse-filtration geotextile laying method |
| CN114223344A (en) * | 2022-02-24 | 2022-03-25 | 中国煤炭地质总局勘查研究总院 | Frozen soil layer repairing method for alpine mining area in plateau |
| 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 |
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| CN102877543B (en) | 2015-05-13 |
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Granted publication date: 20150513 Termination date: 20211024 |