CN205776411U - A kind of insulation safeguard structure of cold district side slope pipeline laying - Google Patents
A kind of insulation safeguard structure of cold district side slope pipeline laying Download PDFInfo
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- CN205776411U CN205776411U CN201620340947.1U CN201620340947U CN205776411U CN 205776411 U CN205776411 U CN 205776411U CN 201620340947 U CN201620340947 U CN 201620340947U CN 205776411 U CN205776411 U CN 205776411U
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- side slope
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses the insulation safeguard structure of a kind of cold district side slope pipeline laying, belong to oil and gas pipes laying technology field, cold district.Described insulation safeguard structure includes multiple closing PVC water tank being layed in and being sequentially distributed bottom excavation pipe trench and along pipe trench longitudinal length；PVC water tank is between the stone masonry bank protection that pipe trench both sides are laid.The insulation safeguard structure that this utility model provides; by laying PVC water tank bottom pipe trench; the 10% concentration sodium-chloride water solution stored in PVC water tank is utilized to intercept or alleviate the heat of oil and gas pipes; slow down oil and gas pipes heat and import in side slope frozen soil; maintain the original thermodynamic status of ever-frozen ground side slope, thus reach to protect the purpose of ever-frozen ground slope stability.
Description
Technical field
This utility model relates to oil and gas pipes laying technology field, cold district, particularly to the oil and gas pipes horizontal wall inscription of a kind of Han Qu
Or side slope insulation safeguard structure when laying along slope.
Background technology
Exploitation along with cold district petroleum resources so that the buried pipeline passing through Permafrost Area gets more and more, and it is the most normal
The safety problem seen is geological disaster.Lattice draw oil pipeline, Sino-Russian gas pipeline Deng Shi China to build in Permafrost Area
Oil and gas pipes engineering, ever-frozen ground along the line, mainly in large stretch of continuous distribution, uses buried-pipe laying mode, many places pipeline horizontal wall inscription completely
Or be laid in ever-frozen ground side slope along slope.Since self-operating, the problem ratio such as earth surface of side slope frost heave, thaw collapse landslide is more prominent,
Causing repeatedly " dew pipe ", " pipe thoroughly " accident, frozen soil side slope destroys serious, and this is by the oil and gas pipes work directly to Permafrost Area
Journey brings more frozen soil engineering geological hazards.Lay oil and gas pipes in Permafrost Area, the most domestic there is no maturation
Experience and technology.Pipeline horizontal wall inscription or suitable slope are laid on frozen soil side slope, can change side slope form, destroy the thermal balance of frozen soil side slope
Condition, produces heat interference to ever-frozen ground, and this interference, by causing the heat flowing in frozen soil to increase, causes ever-frozen ground side slope
Thawing and the upper limit decline, be the main cause causing the side slope of Frozen Ground Area to be destroyed.The foundation of new thermal equilibrium state
Recovery with ever-frozen ground state of temperature needs the long period.When side slope segment pipe upstream and downstream stopping transportation is overhauled, pipe temperature is rapid
So reduce, cause cold district side slope thermal balance to be destroyed.In the process, ever-frozen ground engineering geological condition will occur a series of
Change, the complexity of actual ground frozen soil geological conditon, pipeline engineering will be caused to produce various disease after being completed.
In order to be controlled by the slide slope disease of Permafrost Area within the scope of operation of engineering projects allows, home and abroad is to Permafrost Area
Subgrade engineering be substantially and use built on stilts or buried system of laying, wherein make somebody a mere figurehead system of laying and be mainly used in high ice content ground
Section, buried-pipe laying mode is mainly used in low ice content location.Hot pin is generally inserted in the steel-pipe pile of built on stilts system of laying, individual
Other buried-pipe laying location also uses hot pin or refrigeration machine, is used for reducing ever-frozen ground temperature, keeps the steady of side slope ever-frozen ground
Fixed.Although these measures serve certain effect to solving Permafrost Area slide slope disease, but insert in steel-pipe pile
Hot pin, the high cost of its engineering, it is generally only and just uses in special side slope, be unsuitable for universal side slope and use；And freeze at some
In soil side slope, oil and gas pipes operation temperature is higher, and frozen soil side slope keeps the effect freezed not ideal enough, and increases engineering
This, especially under the main trend that global environment gradual warms up, life-time service can face the biggest challenge.Therefore, how to prevent many
The geological hazards that oil and gas pipes brings is laid in year tundra, remains an insoluble global problem so far.
Utility model content
In order to solve the geological disaster brought when existing ever-frozen ground side slope oil and gas pipes lays, and engineering cost is high,
The problems such as general applicability difference, this utility model provides the insulation safeguard structure of a kind of cold district side slope pipeline laying, including many
Individual being layed in excavates the closing PVC water tank being sequentially distributed bottom pipe trench and along described pipe trench longitudinal length；Described PVC water tank
Between the stone masonry bank protection that described pipe trench both sides are laid.
Described PVC water tank includes PVC casing and PVC cover plate；Multiple equally spaced laterally add it is provided with in described PVC casing
Strong rib and longitudinal reinforced rib；Described PVC cover plate is arranged on described PVC casing, horizontal ribs and longitudinal reinforced rib, and with
Described PVC box sealing；The side of described PVC casing is provided with water injection pipe, and described water injection pipe elevates above the soil and connects valve.
The inner surface of described PVC casing is provided with application of anti-leakage layers, and the outer surface of described PVC casing is provided with anticorrosive coat.
It is provided with electrode type water level sensor in described PVC casing.
When the gradient of cold district side slope is 5～30 °, multiple PVC water tanks are layed at the bottom of excavation pipe trench along side slope is stepped
Portion, and adjacent PVC water tank dislocation overlap.
The insulation safeguard structure of the cold district side slope pipeline laying that this utility model provides, by laying PVC bottom pipe trench
Water tank, utilizes the sodium-chloride water solution in PVC water tank to intercept or alleviates pipeline heat and be transferred to frozen soil side slope, it is achieved to frozen soil
The thermal balance regulation of side slope, prevents the thaw collapse of frozen soil side slope, eliminates the disease bringing cold district frozen soil.This utility model provides
The insulation safeguard structure of cold district's side slope pipeline laying, has the advantages such as simple in construction, construction cost are low, it is possible to suppression is frozen effectively
The diseases such as the thaw collapse formula landslide of soil side slope, lay oil and gas pipes all have higher warp to horizontal wall inscriptions in ever-frozen ground side slope or suitable slope
Ji meaning.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the insulation safeguard structure of horizontal wall inscription pipeline laying on the present embodiment frozen soil side slope；
Fig. 2 is the schematic diagram of the insulation safeguard structure on the present embodiment frozen soil side slope along slope pipeline laying；
Fig. 3 is the close-up schematic view of insulation safeguard structure shown in Fig. 1；
Fig. 4 is the sectional view of PVC water tank in the present embodiment insulation safeguard structure；
Fig. 5 is the PVC box house planar structure schematic diagram of PVC water tank shown in Fig. 4；
Fig. 6 is the present embodiment insulation safeguard structure schematic diagram of suitable slope pipe trench buried depth in 30 ° of side slopes.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, technical solutions of the utility model are further described.
Seeing Fig. 1 to Fig. 3, this utility model embodiment provides the insulation protection knot of a kind of cold district side slope pipeline laying
Structure, including multiple closing PVC water tanks 3 being layed in and being sequentially distributed bottom excavation pipe trench and along pipe trench longitudinal length；PVC water
Case 3 is between the stone masonry bank protection 2 that pipe trench both sides are laid, and the top of PVC water tank 3 and bottom are all equipped with gravelly soil 5.Its
In, PVC water tank 3 includes PVC casing 7 and PVC cover plate 8, as shown in Figures 3 to 5；It is provided with multiple equally spaced in PVC casing 7
Laterally ribs 10 and longitudinal reinforced rib 12, so that PVC water tank 3 strength and stiffness during bearing load bottom pipe trench；PVC covers
Plate 8 is arranged on PVC casing 7, horizontal ribs 10 and longitudinal reinforced rib 12, and seals with PVC casing 7；PVC casing 7
Side is provided with water injection pipe 6.Fig. 1 shows the schematic diagram of the insulation safeguard structure that on frozen soil side slope 1, pipeline 4 horizontal wall inscription lays；Its
In, PVC water tank is laid on bottom the pipe trench on frozen soil side slope 1, and stone masonry bank protection has been laid in pipe trench both sides, and PVC water tank is positioned at two
Between the stone masonry bank protection of side.
In work progress, 200cm thickness gravelly soil is laid at the top of PVC water tank, and it is thick that 200cm is laid in the bottom of PVC water tank
Gravelly soil, utilizes the gap space between gravelly soil at random, it is possible to reach the effect of insulation.The interior outage degree of PVC water tank can
Being designed as 0.2～0.4m, PVC water tank excavates pipe trench longitudinal length in side slope and lays, and usual selectable lengths is 8～15m to be
One group.The distance from bottom frozen soil side slope upper limit at least 0.2m of each PVC water tank, PVC water tank is along the length of excavation pipe trench transverse section
The pipe trench width of height and position residing for water tank.As shown in Figure 4, in each PVC water tank, splendid attire accounts for water tank capacity 90%-95%'s
The sodium-chloride water solution 14 of 10% concentration；The expansion rate that sodium-chloride water solution congeals into ice is about 5%, swollen when making water-setting build-up ice
Swollen volume is approximately less than the volume of water tank, it is to avoid cause the damage to water tank because water-setting build-ups ice.Sodium chloride in PVC water tank
Aqueous solution can regulate the thermal balance in frozen soil side slope, intercepts or alleviates heat and transmit to frozen soil, prevents the thaw collapse of frozen soil side slope,
Eliminate the disease that cold district frozen soil is brought.The inner surface of PVC casing 7 is provided with application of anti-leakage layers 11, is used for preventing sodium-chloride water solution
Seepage；The outer surface of PVC casing 7 is provided with anticorrosive coat 9, for slowing down the soil corrosion to PVC casing 7.At PVC casing 7
Inside it is provided with electrode type water level sensor 13, as shown in Figure 4 and Figure 5；Electrode type water level sensor 13 is used for detecting sodium chloride water
The liquid level of solution.Water injection pipe 6 elevates above the soil after passing gravelly soil 5 and stone masonry bank protection 2, and connection has valve (not shown).PVC
Sodium-chloride water solution in casing can freezing repeatedly, melt cyclic process formed loss, cause sodium-chloride water solution to reduce；When
When sodium-chloride water solution reduces, in PVC casing, supplement sodium-chloride water solution by water injection pipe 6, so that having in PVC casing enough
Sodium-chloride water solution regulate thermal balance.In mild frozen soil side slope 1, multiple PVC water tanks are long along the longitudinal direction of pipe trench successively
Degree direction arranged, two adjacent PVC water tank joints can arrange shrinkage joint with gravelly soil.
Fig. 6 shows the present embodiment insulation safeguard structure showing along slope pipe trench buried depth on the frozen soil side slope 1 that the gradient is 30 °
It is intended to.Wherein, multiple PVC water tanks 3 are layed in bottom excavation pipe trench along side slope is stepped, and adjacent PVC water tank dislocation
Overlapping.In figure 6, the adjacent distance between two PVC water tanks is 100cm, between two adjacent PVC water tank dislocation overlaps
Height gap fill gravelly soil 5.Under normal circumstances, when the gradient of frozen soil side slope is 5～30 °, in order to prevent adjacent PVC water
The destruction that case causes because being moved by vertical direction sliding force, needs to arrange stone masonry bank protection 2 between PVC water tank, such as may be used
One stone masonry bank protection is set every 15m, to prevent the position of before and after's PVC water tank from moving.
The insulation safeguard structure of the cold district side slope pipeline laying of this utility model embodiment, by being laid on bottom pipe trench
PVC water tank, carries out heat partition by the Upper Limit of Permafrost of side slope and pipeline, and making pipeline operation dispel the heat need to be through PVC water tank ability
Transmission downwards.In the PVC water tank of this utility model embodiment the sodium-chloride water solution of 10% concentration have bigger thermal capacitance and-
In the case of 15 DEG C covert during absorb heat, the feature of heat release, in the winter time, the chlorine during the heat of pipeline enters PVC water tank during operation
Changing sodium water solution, sodium-chloride water solution in a disguised form absorbs heat, thus prevents amount of heat to be transferred to frozen soil, it is to avoid side slope original heat
Poised state is destroyed, and effectively prevent frozen soil side slope and overall thaw collapse formula landslide occurs；At warm season, extraneous and pipeline heat enters
Entering PVC water tank, the ice heat absorption in PVC water tank is gradually melted, and absorbs amount of heat and makes side slope frozen soil slowly melt, is effectively prevented
The thaw collapse landslide that side slope frozen soil causes because of rapid, high volume heat absorption is destroyed.This utility model embodiment store aqueous sodium chloride
The PVC water tank of liquid constitutes the thermally equilibrated structure sheaf of regulation in roadbed, it is possible to absorbs heat in the phase transition process of heat exchange and puts
Heat, reaches storage and the transduction of energy, can effectively suppress Permafrost Area side slope to cause because laying oil and gas pipes
The disease such as thaw collapse formula landslide.
The insulation safeguard structure of the cold district side slope pipeline laying that this utility model embodiment provides, by being laid at the bottom of pipe trench
Sodium-chloride water solution in the PVC water tank in portion regulates the thermal balance of permafrost region side slope, its building cost as heat exchange medium
It is below using the cost of hot pin technology with use cost, and the effect suppressing thaw collapse formula to come down is better than existing frozen soil side slope
Any measure taked, simple in construction, the oil and gas pipes horizontal wall inscription being particularly well-suited to Han Qu area or the frozen soil limit laid along slope
Slope, has universal Practical significance.
Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect
Step describes in detail, be it should be understood that and the foregoing is only specific embodiment of the utility model, is not limited to this
Utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. done, all should wrap
Within being contained in protection domain of the present utility model.
Claims (5)
1. the insulation safeguard structure of Zhong Han district side slope pipeline laying, it is characterised in that include multiple being layed at the bottom of excavation pipe trench
Portion and the closing PVC water tank being sequentially distributed along described pipe trench longitudinal length；Described PVC water tank is positioned at described pipe trench both sides paving
If stone masonry bank protection between.
2. the insulation safeguard structure of cold district's side slope pipeline laying as claimed in claim 1, it is characterised in that described PVC water tank
Including PVC casing and PVC cover plate；Multiple equally spaced horizontal ribs and longitudinal reinforced rib it is provided with in described PVC casing；Institute
State PVC cover plate to be arranged on described PVC casing, horizontal ribs and longitudinal reinforced rib, and with described PVC box sealing；Institute
The side stating PVC casing is provided with water injection pipe, and described water injection pipe elevates above the soil and connects valve.
3. the insulation safeguard structure of cold district's side slope pipeline laying as claimed in claim 2, it is characterised in that described PVC casing
Inner surface be provided with application of anti-leakage layers, the outer surface of described PVC casing is provided with anticorrosive coat.
4. the insulation safeguard structure of cold district's side slope pipeline laying as claimed in claim 2, it is characterised in that described PVC casing
Inside it is provided with electrode type water level sensor.
5. the insulation safeguard structure of cold district's side slope pipeline laying as claimed in claim 1, it is characterised in that when cold district side slope
When the gradient is 5～30 °, multiple PVC water tanks are layed in bottom excavation pipe trench along side slope is stepped, and adjacent PVC water tank
Dislocation overlap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620340947.1U CN205776411U (en) | 2016-04-21 | 2016-04-21 | A kind of insulation safeguard structure of cold district side slope pipeline laying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620340947.1U CN205776411U (en) | 2016-04-21 | 2016-04-21 | A kind of insulation safeguard structure of cold district side slope pipeline laying |
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| Publication Number | Publication Date |
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| CN205776411U true CN205776411U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620340947.1U Active CN205776411U (en) | 2016-04-21 | 2016-04-21 | A kind of insulation safeguard structure of cold district side slope pipeline laying |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004911A (en) * | 2019-03-29 | 2019-07-12 | 中国科学院寒区旱区环境与工程研究所 | Protect the cold mattress system and its construction method of embedded object in a kind of Permafrost Area |
| CN110714474A (en) * | 2019-10-24 | 2020-01-21 | 广西大学 | Pile foundation structure and method for quick refreezing and automatic refrigerating by using same |
-
2016
- 2016-04-21 CN CN201620340947.1U patent/CN205776411U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004911A (en) * | 2019-03-29 | 2019-07-12 | 中国科学院寒区旱区环境与工程研究所 | Protect the cold mattress system and its construction method of embedded object in a kind of Permafrost Area |
| CN110004911B (en) * | 2019-03-29 | 2024-02-13 | 中国科学院西北生态环境资源研究院 | Cold pad system for protecting buried object in permafrost region and construction method thereof |
| CN110714474A (en) * | 2019-10-24 | 2020-01-21 | 广西大学 | Pile foundation structure and method for quick refreezing and automatic refrigerating by using same |
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