CN103899838A - Method and device for controlling thaw settlement of pipes in permafrost regions by pontoon device - Google Patents
Method and device for controlling thaw settlement of pipes in permafrost regions by pontoon device Download PDFInfo
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- CN103899838A CN103899838A CN201210583969.7A CN201210583969A CN103899838A CN 103899838 A CN103899838 A CN 103899838A CN 201210583969 A CN201210583969 A CN 201210583969A CN 103899838 A CN103899838 A CN 103899838A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000002689 soil Substances 0.000 claims description 31
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000007710 freezing Methods 0.000 claims description 7
- 230000008014 freezing Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 238000010257 thawing Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000008093 supporting effect Effects 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000012954 risk control Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/026—Laying or reclaiming pipes on land, e.g. above the ground in or on a frozen surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/14—Hangers in the form of bands or chains
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a method and a device for controlling thaw settlement of pipes in permafrost regions by a pontoon device and relates to the technical field of pipeline systems. The method and the device are characterized in that the pontoon device provides a pipeline with uplift force to raise the pipeline and prevent thaw settlement; when the ground of the permafrost region freezes, the pontoon device and frozen earth freeze together and also provide the pipeline uplift force; two stop bars (2) are buried on each side of a buried pipeline (1), the upper ends of the four stop bars (2) are limited with lightweight waterproof filling material (3) and a shell (4) to form the pontoon device; a lifting tape (6) wound around the buried pipeline (1) is fixed below the pontoon device through screws (5); measure points are used as pipeline support points; the support points are used to support the pipeline to ensure that beyond-expectation settlement never occurs to the pipeline. The device has no moving parts, is free of maintenance, has good reliability, is free of power consumption and is applicable to buried pipelines in the permafrost regions.
Description
Technical field
The present invention is a kind of method and apparatus that utilizes pontoon device control Permafrost Area body thaw collapse.Relate to pipe-line system technical field.
Background technique
Along with China's rapid economic development, the demand of petroleum resources is also increased day by day.As a kind of economy, long distance oil-gas means of delivery safely, uninterruptedly, oil and gas pipes is being obtained huge development in nearly decades.But because a lot of petroleum resourceses are contained in permafrost Han Qu, in order to meet the demand of economic development to petroleum resources, increasing pipe-line will inevitably be built in Permafrost Area.Crude oil pipeline, the representative alaskan pipeline that has the U.S., Canadian promise Man Weiersi pipeline and the Chinese unconcerned large pipeline built at permafrost region both at home and abroad at present.Permafrost Area oil and gas pipes mainly adopts buried or built on stilts mode to lay.But consider based on safety, economic dispatch factor, buried is more general system of laying, if promise Man Weiersi pipeline and unconcerned large pipeline are all that this kind of mode laid.But while adopting buried mode to carry out pipe laying, will unavoidably change surface configuration, vegetation destruction, causes that ground Upper Limit of Permafrost changes and decline and the thawing of permafrost.In addition, in pipeline operation process, while managing the projecting frozen soils temperature of defeated temperature, will constantly melt frozen soil around, form and melt circle, and then cause body that inhomogeneous thaw collapse occurs, destroy pipeline stability, threat tube security of operation.At present, thaw collapse risk is a global engineering roadblock for the safe operation of pipeline, there is no effective method and measure and prevents and treats the generation of body thaw collapse problem.
The thaw collapse risk of pipeline and the thaw collapse of frozen soil foundation are closely related, when Pipeline Ground is positioned at weak thaw collapse or not when the gravel, coarse sands layer of thaw collapse and sial, and base stabilization, there is very little risk for the thaw collapse of body.And in the time that Pipeline Ground is layed in strong thaw collapse region (ice-rich permafrost, water ice frozen soil and containing native ice sheet), frozen soil easily causes pipe sedimentation after melting, and needs to consider take corresponding control measures.Especially for when Pipeline Ground be thaw collapse coefficient be greater than 25 when the native ice sheet, frozen soil is stream after melting and moulds state, lose the mechanical bearing capacity to pipeline completely, thereby cause pipeline to occur at short notice a large amount of sedimentations, very easily causing that pipeline breaks because thaw collapse amount is excessive, is the most dangerous geological state.The thaw collapse problem of pipeline, mainly comes from two aspects, and the one, in conduit running process, externally heat radiation continually, causes around occurring melting circle, melts soil and occurs that the deflection that exceedes expection causes body sedimentation.The 2nd, after frozen soil melts, mechanical bearing capacity sharply reduces, and even loses bearing capacity, cannot realize the effective support to pipeline.The thaw collapse problem of pipeline, is due to externally heat radiation continually of pipeline essentially, causes due to strong thaw collapse frozen soil thawing around.Therefore, pipeline is conducted to the heat going out and take suitable measure again to export in atmosphere, the freezing plateau state that maintains Pipeline Ground is only and ensures the basic of pipeline stabilization.In order to prevent or slow down the thermal effect of buried pipeline in permafrost regions, once adopted cooling machine set to carry out mechanical refrigeration to pipeline abroad, to reduce pipeline heat to the impact of frozen soil around.Its deficiency is not only will consume a lot of electric energy, does not utilize environmental protection and energy saving, and operation and maintenance cost is also quite high, unreasonable economically.In addition, this measure cannot be used in the region that there is no stable power source.CN102563359A discloses a kind of permafrost region oil and gas pipes vertical displacement automatic monitoring method and device, is to calculate pipeline elevation variation by measuring fluid pressure.It can only be measured, and can not prevent and treat the thaw collapse of pipeline.Therefore, be necessary to develop a kind of method and apparatus that is specifically applied to the control of buried pipeline in permafrost regions thaw collapse, and have without consuming the advantages such as electric energy, non-maintaining, environmental protection and energy saving, thoroughly solve permafrost region buried pipeline in running due to around frozen soil melt the thaw collapse problem causing.
Summary of the invention
The object of the invention is to invent a kind of movement-less part, non-maintaining, there is good reliability, do not consume the method and apparatus that utilizes pontoon device control Permafrost Area body thaw collapse that is applicable to permafrost region buried pipeline of electric energy.
The present invention is heated and melts the situation of rear water yield abundance according to permafrost, utilizes buoyancy, adopts pontoon device, gives pipeline one lifting force upwards, thereby holds up pipeline, prevents thaw collapse.In the time of the ground freezing of Permafrost Area, pontoon device and frozen soil freeze together, and give equally pipeline one pulling force upwards.The spacing pontoon device being made up of light-weight water-proof packing material 3 and shell 4 in upper end that respectively buries 2,4 shift rods 2 of two shift rods in the both sides of buried pipeline 1, the downside of pontoon device is fixedly walked around the elevator belt 6 of buried pipeline 1 with screw 5.
In order to consider exploitativeness and the Economy of protection method, in the time this zone duct being carried out to thaw collapse improvement, consider measure to implement the strong point of point as pipeline, utilize the strong point to ensure that to the supporting effect of pipeline pipeline does not exceed the sedimentation of expection.Utilize piping stress analysis software CAESAR II to carry out stress analysis, and check standard according to ASMA B31.4, and determine that this section pipeline is in the time that strong point span is less than 20m, the maximum stress that pipeline bears is less than allowable stress, the requirement that conforms with the regulations, pipeline is safe.On this basis, according to the buoyancy after the stressing conditions of pipeline and full freezing soil thawing, determine the load that the strong point need to bear.
Pontoon lifting force calculates checks:
1, the deadweight of pipeline unit length can be calculated as follows:
q
1＝0.2466Ct(D-t)
In formula:
Q
1-pipe linear mass, N/m;
The relative density coefficient of C-tubing;
The nominal wall thickness of t-pipe, mm;
The external diameter of D-pipe, mm;
2, pipeline internal medium quality
In pipeline, the mass of medium of unit length is calculated as follows:
q
2＝0.785×10
-6×(D
2-4t
2)γ
3
In formula:
Q
2unit length mass of medium in-pipeline, N/m;
The external diameter of D-pipe, mm;
The nominal wall thickness of t-pipe, mm;
γ
3-Media density, N/m
3;
3, swampy area's pipeline buoyancy
The suffered buoyancy of pipeline is:
q
3=ρ
sgV
g
In formula:
Q
3the suffered buoyancy of-pipeline, N/m;
ρ
sbuoyant density after-frozen soil melts, kg/m
3;
V
g-unit length conduit volume, m
3;
4, the downward gravity of swampy area's unit length pipeline
q
4＝q
1+q
2-q
3
In formula:
Q
4the gravity that-unit length pipeline is downward, N/m.
5, pontoon lifting force
Calculate according to strong point span lm, the lifting force needing is:
q
5＝lq
4
In formula:
Q
5-lifting force, N.
6, pontoon sinks to the degree of depth of melting in frozen soil:
In formula:
H-pontoon sinks to the degree of depth of melting in frozen soil, m;
The length of side of L-shell 4, m.
In the present invention, relate to Permafrost Area pipeline thaw collapse control system principle schematic diagramWherein 1 is buried pipeline, and 2 is shift rod, and 3 is light-weight water-proof packing material, and 4 is shell, and 5 is screw, and 6 is elevator belt.The spacing pontoon device being made up of light-weight water-proof packing material 3 and shell 4 in upper end that respectively buries 2,4 shift rods 2 of two shift rods in the both sides of buried pipeline 1, the downside of pontoon device is fixedly walked around the elevator belt 6 of buried pipeline 1 with screw 5.
Wherein, shift rod 2 is elongate in shape, and below band pyramidal projections is fixed up after being convenient to penetrate pipeline below permafrost soil layer; Top is one " right angle " type blend stop, and blend stop bottom is lower than pontoon below 60-70 centimetre, and the blend stop of four shift rods surrounds an open region, the floating position of restriction pontoon;
Light-weight water-proof packing material 3 is filled in shell 4 in advance, and good seal shell 4, prevents into water;
Shell 4 is square structure, light-high-strength alloy material, and below is immersed in the water, and top is arch shape, floats on the surface;
The present invention compared with prior art tool has the following advantages: 1, efficiently solve Permafrost Area pipeline because frozen soil around melts the thaw collapse problem causing, ensured the safe operation of permafrost region pipeline; 2, can realize effective control of pipeline thaw collapse in full season; 3, there is good Economy, without consuming electric energy, movement-less part, there is the features such as the high and applicability of non-maintaining, energy-saving and environmental protection, reliability is good; 4, easy construction, can use reliably and with long-term.
The present invention can be applicable to the thaw collapse risk control of the buried oil and gas pipes in Permafrost Area.
Brief description of the drawings
Fig. 1 Permafrost Area pipeline thaw collapse protection method front schematic view
Fig. 2 Permafrost Area pipeline thaw collapse protection method side schematic view
Fig. 3 Permafrost Area pipeline thaw collapse protection method schematic top plan view
Wherein 1-buried pipeline, 2-shift rod
3-light-weight water-proof packing material, 4-shell
5-screw, 6-elevator belt
Embodiment
Embodiment, with this example, the specific embodiment of the present invention is described and the present invention is further illustrated.This example is to be heated and to melt the situation of rear water yield abundance according to permafrost, utilizes buoyancy, adopts pontoon device, gives pipeline one lifting force upwards, thereby holds up pipeline, prevents thaw collapse.Base area is surveyed and be found that, this section is region, permafrost marsh, and pipeline is directly layed in the farinose argillic horizon of strong thaw collapse, thickness of clay soil is greater than 10m, and thaw collapse coefficient is greater than 10, is full freezing soil, water content is higher than 40%, and the buoyant density after frozen soil melts is 910kg/m
3, belong to strong thaw collapse location.This section pipe material is for being X65 steel, and caliber is 813mm, and pipe thickness is 16mm, and pipe top buried depth is 1.8m, and without thermal insulation layer, managing defeated mean temperature is 10 DEG C.
In order to consider exploitativeness and the Economy of protection method, in the time this zone duct being carried out to thaw collapse improvement, consider measure to implement the strong point of point as pipeline, utilize the strong point to ensure that to the supporting effect of pipeline pipeline does not exceed the sedimentation of expection.Utilize piping stress analysis software CAESAR II to carry out stress analysis, and check standard according to ASMA B31.4, and determine that this section pipeline is in the time that strong point span is 20m, the maximum stress that pipeline bears is less than allowable stress, the requirement that conforms with the regulations, pipeline is safe.On this basis, according to the buoyancy after the stressing conditions of pipeline and full freezing soil thawing, determine the load that the strong point need to bear.
Pontoon lifting force calculates checks:
1, the deadweight of pipeline unit length can be calculated as follows:
q
1＝0.2466Ct(D-t)
In formula:
Q
1-pipe linear mass, N/m;
The relative density coefficient of C-tubing;
The nominal wall thickness of t-pipe, mm;
The external diameter of D-pipe, mm.
Jagdaqi swampy area self weight of pipeline result of calculation is:
q
1＝0.2466Ct(D-t)＝0.2466×0.98×16×(813-16)＝3082N/m
2, pipeline internal medium quality
In pipeline, the mass of medium of unit length can be calculated as follows:
q
2＝0.785×10
-6×(D
2-4t
2)γ
3
In formula:
Q
2unit length mass of medium in-pipeline, N/m;
The external diameter of D-pipe, mm;
The nominal wall thickness of t-pipe, mm;
γ
3-Media density, N/m
3.
Jagdaqi swampy area pipeline internal medium Mass Calculation result is:
q
2=0.785×10
-6×(D
2-4t
2)γ
3
=0.785×10
-6×(813
2-4×16
2)×840.9×9.8=4269N/m
3, swampy area's pipeline buoyancy
The suffered buoyancy of pipeline is:
In formula:
ρ
sbuoyant density after-frozen soil melts, kg/m
3;
V
g-unit length conduit volume, m
3.
4, the downward gravity of swampy area's unit length pipeline
q
4=q
1+q
2-q
3＝3082+4269-4627=2724N/m
5, pontoon lifting force
Calculate according to strong point span 20m, the lifting force needing is:
q
5=20q
4=20×2724=54480N
6, pontoon sinks to the degree of depth of melting in frozen soil
Designed enclosures 4 length of sides are 3m, be highly circular arc peak higher than bottom surface 0.9m, crown height is 0.2m, sinkage is:
In formula:
The length of side of L-shell 4, m.
By calculating, the length of determining shift rod 2 is 4m, and thickness is 0.08m, the long 0.8m of blend stop, and thickness is 0.08m, gear lever mutual spacing 4m; Shell 4 length of sides are 3m, be highly circular arc peak higher than bottom surface 0.9m, crown height is 0.2m; Elevator belt length is 8m, and width is 1m.Can realize the effective support to pipeline.
Specific implementation process is as follows:
Choose exemplary segment 100m, establish a strong point at interval of 20m, respectively in pipeline bilateral symmetry position make a call to two holes, go deep into permafrost soil layer, insert shift rod; After gear lever freezes to fix, will put into the region that blend stop surrounds with the shell of light-weight water-proof packing material, float over the surface of melting frozen soil, by elevator belt bypass pipeline, symmetry is fixed on shell.Work progress is chosen in as far as possible and carries out winter.
This example is through test, and thaw collapse problem does not occur exemplary segment pipeline.The thaw collapse problem of the permafrost marsh zone duct that the enforcement of this measure effectively solves, has ensured the safe operation of pipeline.
Claims (5)
1. a method of utilizing pontoon device control Permafrost Area body thaw collapse, is characterized in that adopting pontoon device, gives pipeline one lifting force upwards, thereby holds up pipeline, prevents thaw collapse; In the time of the ground freezing of Permafrost Area, pontoon device and frozen soil freeze together, and give equally pipeline one pulling force upwards; Respectively bury two shift rods (2) in the both sides of buried pipeline (1), the spacing pontoon device being formed by light-weight water-proof packing material (3) and shell (4) in upper end of 4 shift rods (2), the screw for downside (5) of pontoon device is fixedly walked around the elevator belt (6) of buried pipeline (1);
Consider measure to implement the strong point of point as pipeline, utilize the strong point to ensure that to the supporting effect of pipeline pipeline does not exceed the sedimentation of expection; Utilize piping stress analysis software CAESAR II to carry out stress analysis, and check standard according to ASMA B31.4, and determine that this section pipeline is in the time that strong point span is less than 20m, the maximum stress that pipeline bears is less than allowable stress, the requirement that conforms with the regulations, pipeline is safe; On this basis, according to the buoyancy after the stressing conditions of pipeline and full freezing soil thawing, determine the load that the strong point need to bear;
Pontoon lifting force calculates checks:
1) deadweight of pipeline unit length can be calculated as follows:
q
1＝0.2466Ct(D-t)
In formula:
Q
1-pipe linear mass, N/m;
The relative density coefficient of C-tubing;
The nominal wall thickness of t-pipe, mm;
The external diameter of D-pipe, mm;
2) pipeline internal medium quality
In pipeline, the mass of medium of unit length is calculated as follows:
q
2＝0.785×10
-6×(D
2-4t
2)γ
3
In formula:
Q
2unit length mass of medium in-pipeline, N/m;
The external diameter of D-pipe, mm;
The nominal wall thickness of t-pipe, mm;
γ
3-Media density, N/m
3;
3) swampy area's pipeline buoyancy
The suffered buoyancy of pipeline is:
q
3=ρ
sgV
g
In formula:
Q
3the suffered buoyancy of-pipeline, N/m;
ρ
sbuoyant density after-frozen soil melts, kg/m
3;
V
g-unit length conduit volume, m
3;
4) the downward gravity of swampy area's unit length pipeline
q
4＝q
1+q
2-q
3
In formula:
Q
4the gravity that-unit length pipeline is downward, N/m.
5) pontoon lifting force
Calculate according to strong point span lm, the lifting force needing is:
q
5＝lq
4
In formula:
Q
5-lifting force, N.
6) pontoon sinks to the degree of depth of melting in frozen soil:
In formula:
H-pontoon sinks to the degree of depth of melting in frozen soil, m;
The length of side of L-shell, m.
2. a right to use requires the pontoon device that utilizes of method described in 1 to prevent and treat the device of Permafrost Area body thaw collapse, it is characterized in that respectively burying two shift rods (2) in the both sides of buried pipeline (1), the spacing pontoon device being made up of light-weight water-proof packing material (3) and shell (4) in upper end of 4 shift rods (2), the screw for downside (5) of pontoon device is fixedly walked around the elevator belt (6) of buried pipeline (1).
3. a kind of device that utilizes pontoon device control Permafrost Area body thaw collapse according to claim 2, it is characterized in that described shift rod (2) is for elongate in shape, below band pyramidal projections, top is one " right angle " type blend stop, blend stop bottom is lower than pontoon below 60-70 centimetre, the blend stop of four shift rods surrounds an open region, the floating position of restriction pontoon.
4. a kind of device that utilizes pontoon device control Permafrost Area body thaw collapse according to claim 2, it is characterized in that described shell (4) is square structure, light-high-strength alloy material, below is immersed in the water, top is arch shape, floats on the surface; Light-weight water-proof packing material (3) is filled in shell (4) in advance, and good seal shell 4.
5. a kind of device that utilizes pontoon device control Permafrost Area body thaw collapse according to claim 2, is characterized in that described elevator belt (6) is high-strength flexible wear-resistant strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583969.7A CN103899838B (en) | 2012-12-28 | 2012-12-28 | A kind of method and apparatus utilizing floating pontoon arrangement to prevent and treat Permafrost Area body thaw collapse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583969.7A CN103899838B (en) | 2012-12-28 | 2012-12-28 | A kind of method and apparatus utilizing floating pontoon arrangement to prevent and treat Permafrost Area body thaw collapse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103899838A true CN103899838A (en) | 2014-07-02 |
| CN103899838B CN103899838B (en) | 2016-01-20 |
Family
ID=50991340
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210583969.7A Active CN103899838B (en) | 2012-12-28 | 2012-12-28 | A kind of method and apparatus utilizing floating pontoon arrangement to prevent and treat Permafrost Area body thaw collapse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103899838B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114303A (en) * | 2018-09-30 | 2019-01-01 | 中国十七冶集团有限公司 | A kind of high altitudes and cold area large aperture corrugated steel pipe installation auxiliary device |
| CN112901909A (en) * | 2021-01-21 | 2021-06-04 | 中国科学院西北生态环境资源研究院 | Buried pipeline fixing device and fixing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747355A (en) * | 1972-03-03 | 1973-07-24 | Amoco Prod Co | Pipeline supported by beams and cables in permafrost areas |
| US4181448A (en) * | 1978-09-25 | 1980-01-01 | Atlantic Richfield Company | Combination roadway and pipeline way in permafrost regions |
| JP2001003350A (en) * | 1999-06-18 | 2001-01-09 | Kinjo Rubber Kk | Soil improvement method by board drain making use of freezing-thawing |
| CN101117793A (en) * | 2007-09-05 | 2008-02-06 | 中国建筑第七工程局 | Steelwork pipe arch bridge float-dragging construction method |
| CN201317935Y (en) * | 2008-09-22 | 2009-09-30 | 中铁十一局集团第二工程有限公司 | Paramos frozen soil region culvert frost heaving thaw collapse preventing device |
-
2012
- 2012-12-28 CN CN201210583969.7A patent/CN103899838B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747355A (en) * | 1972-03-03 | 1973-07-24 | Amoco Prod Co | Pipeline supported by beams and cables in permafrost areas |
| US4181448A (en) * | 1978-09-25 | 1980-01-01 | Atlantic Richfield Company | Combination roadway and pipeline way in permafrost regions |
| JP2001003350A (en) * | 1999-06-18 | 2001-01-09 | Kinjo Rubber Kk | Soil improvement method by board drain making use of freezing-thawing |
| CN101117793A (en) * | 2007-09-05 | 2008-02-06 | 中国建筑第七工程局 | Steelwork pipe arch bridge float-dragging construction method |
| CN201317935Y (en) * | 2008-09-22 | 2009-09-30 | 中铁十一局集团第二工程有限公司 | Paramos frozen soil region culvert frost heaving thaw collapse preventing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114303A (en) * | 2018-09-30 | 2019-01-01 | 中国十七冶集团有限公司 | A kind of high altitudes and cold area large aperture corrugated steel pipe installation auxiliary device |
| CN112901909A (en) * | 2021-01-21 | 2021-06-04 | 中国科学院西北生态环境资源研究院 | Buried pipeline fixing device and fixing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103899838B (en) | 2016-01-20 |
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Effective date of registration: 20211208 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee before: PetroChina Company Limited |