CN202850011U - Thermal insulation blind ditch facility suitable for permafrost regions - Google Patents

Thermal insulation blind ditch facility suitable for permafrost regions Download PDF

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Publication number
CN202850011U
CN202850011U CN 201220546841 CN201220546841U CN202850011U CN 202850011 U CN202850011 U CN 202850011U CN 201220546841 CN201220546841 CN 201220546841 CN 201220546841 U CN201220546841 U CN 201220546841U CN 202850011 U CN202850011 U CN 202850011U
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CN
China
Prior art keywords
layer
water
thermal insulation
insulation
frozen
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Expired - Fee Related
Application number
CN 201220546841
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Chinese (zh)
Inventor
程佳
杨永鹏
韩龙武
唐彩梅
赵相卿
李奋
蔡汉成
刘锟
熊治文
牛东兴
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Northwest Research Institute Co Ltd of CREC
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Northwest Research Institute Co Ltd of CREC
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Priority to CN 201220546841 priority Critical patent/CN202850011U/en
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Publication of CN202850011U publication Critical patent/CN202850011U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a thermal insulation blind ditch facility suitable for permafrost regions. The thermal insulation blind ditch facility suitable for permafrost regions comprises an inverted filter, wherein a water collection and drainage layer and a rubble layer are paved in the inverted filter. The inverted filter is provided with a thermal insulation layer, a clay layer and a surface vegetation layer sequentially from top to bottom. The thermal insulation blind ditch facility intercepts and drains water through the inverted filter and the water collection and drainage layer and utilizes the thermal insulation layer to guarantee that water on a frozen layer in the inverted filter cannot be frozen and drain successfully, heat erosion effect of the water on the frozen layer is prevented, and the water on the frozen layer and surface water can be effectively intercepted, and influence on stability of engineering buildings due to geological diseases caused by the fact that the water on the frozen layer is frozen to form frost-heaved mounds is prevented. Simultaneously, the thermal insulation blind ditch facility suitable for permafrost regions gives full consideration to the environmental protection in the permafrost regions, cannot damage ecological balance of the permafrost regions, is good in thermal insulation effect, strong in water interception and drainage performance and rapid and convenient to construct, accords with national environmental requirements, and guarantees smooth engineering construction and maintenance during operation.

Description

A kind of insulation french drain facility that is applicable to Permafrost Area
Technical field
The utility model 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.
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.
The utility model content
The purpose of this utility model provides 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.
For achieving the above object, the technical scheme that the utility model adopts 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.
The height of described loaded filter sidewall equals to collect drainage blanket height, loaded filter top layer thickness, Ballast Layer Height and insulation layer height sum.
The beneficial effect of the utility model insulation 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 of the utility model insulation 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
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
For how to stop and drain suprapermafrost water, the utility model 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.Loaded filter 1 adopts the anti-filter geotextile laying to form; The anti-filter geotextiles is the water permeability geosynthetics that is formed by acupuncture or braiding by synthetic fibers.
[0019]Process chart during the construction of the utility model insulation french drain facility is as shown in Figure 2: 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.Frozen soil upper limit can be confirmed by consulting local geologic information or boring, the reply scene is investigated before the excavation, investigates thoroughly the position of the facilities such as oil pipeline, optical cable, cable of annex, notes protection in construction, guarantee the safety of above facility, but sign exposed identification after construction was finished; Irrigation canals and ditches bottoms and sidewall lay meet relevant national standard by synthetic fibers by the anti-filter geotextiles that acupuncture or braiding form, making the anti-filter geotextiles end face of trench sidewall laying and the distance on earth's surface is 1~1.2m; 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 the height sum of collection drainage blanket 2, macadam 3, insulation layer 4 and loaded filter 1 top layer equates with the height of loaded filter 1 sidewall; Backfill meets the pure clay of relevant specification of country on the insulation layer 4, and compacting, and the formation compactness reaches the clay layer 5 more than 93%; Grass planting on clay layer 5 forms surface vegetation layer 6, thereby builds up insulation french drain facility.
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.
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.In order to reduce cost, preferred chunk directly is 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, forbids to use severely-weathered block of stone, and 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, plays enough insulation effects.
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.
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, the insulation layer 4 on loaded filter 1 top can guarantee that the water body that converges in the french drain can not freeze, make it present fluid state, and flow to ditch exit along irrigation canals and ditches along the slope by the space of collection drainage blanket 2 inside, be expelled to the river or away from the position of engineering construction.
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 suprapermafrost water can be discharged into the appointed place according to the engineering site situation; Simultaneously, take into full account the environmental issue of Permafrost Area, can not destroy the ecological homeostasis of Permafrost Area.Heat insulation effect is good, and it is strong to cut drainage performance, and quick construction is convenient, meets national requirements for environmental protection.

Claims (7)

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. the insulation french drain facility that is applicable to Permafrost Area as claimed in claim 1 or 2 is characterized in that the thickness of described macadam (3) is 10~20cm.
6. the insulation french drain facility that is applicable to Permafrost Area as claimed in claim 1 or 2 is characterized in that, described collection drainage blanket (2) adopts the macrovoid material-paving to form.
7. the insulation french drain facility that is applicable to Permafrost Area as claimed in claim 1 is characterized in that the compactness of described clay layer (5) is more than 93%.
CN 201220546841 2012-10-24 2012-10-24 Thermal insulation blind ditch facility suitable for permafrost regions Expired - Fee Related CN202850011U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220546841 CN202850011U (en) 2012-10-24 2012-10-24 Thermal insulation blind ditch facility suitable for permafrost regions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220546841 CN202850011U (en) 2012-10-24 2012-10-24 Thermal insulation blind ditch facility suitable for permafrost regions

Publications (1)

Publication Number Publication Date
CN202850011U true CN202850011U (en) 2013-04-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN107700632A (en) * 2017-09-27 2018-02-16 安徽省新路建设工程集团有限责任公司 The construction method of insulation infiltration combined type covered conduit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102877543B (en) * 2012-10-24 2015-05-13 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
CN107700632A (en) * 2017-09-27 2018-02-16 安徽省新路建设工程集团有限责任公司 The construction method of insulation infiltration combined type covered conduit
CN107700632B (en) * 2017-09-27 2019-05-31 安徽省新路建设工程集团有限责任公司 The construction method of heat preservation infiltration combined type underdrain

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130403

Termination date: 20161024

CF01 Termination of patent right due to non-payment of annual fee