CN103591377A - Method for constructing directly-buried heat-preservation pipeline passing by marshland section - Google Patents
Method for constructing directly-buried heat-preservation pipeline passing by marshland section Download PDFInfo
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- CN103591377A CN103591377A CN201310607200.9A CN201310607200A CN103591377A CN 103591377 A CN103591377 A CN 103591377A CN 201310607200 A CN201310607200 A CN 201310607200A CN 103591377 A CN103591377 A CN 103591377A
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- 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
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
Abstract
The invention provides a method for constructing a directly-buried heat-preservation pipeline passing by a marshland section. The method comprises the steps that a marshland is filled with coal gangue so that an operation face can be formed, a groove used for enabling the heat-preservation pipeline to be directly buried is dug in the operation face, pebble replacement and filling are conducted on the part of sludge at the bottom of the groove, and a pebble replacement and filling layer allowing underground water to flow through is formed at the bottom of the groove through replaced and filled pebbles; the water level at the bottom of the groove does not exceed the pebble replacement and filling layer and a medium-coarse sand layer is laid between the pebble replacement and filling layer and the laid pipeline; an anchor block foundation ditch is dug in the groove; after the medium-coarse sand layer is dried, the pipeline is installed in the groove, and butt joint welding is conducted on the pipeline; an anchor block is installed in the anchor block foundation ditch and used for fixing the pipeline placed in the groove; after butt joint welding is accomplished, the groove is backfilled. According to the method, the problems that the pipeline bears force in the sludge, the pipeline cannot effectively operate in a normal life cycle, the pipeline floats when water does not pass by, and the pipeline is long in construction period are solved.
Description
Technical field
The present invention relates to directly-buried thermal insulation pipes technical field, more specifically, relate to a kind of directly-buried thermal insulation pipes by the method for construction of marsh district.
Background technique
In the work progress of Heat Supply Engineering hot water piping, due to the distance problem of heating plant and heating community, the circuit of hot water piping has long situation and occurs, some hot water pipings even reach tens kilometers long.And the ground condition in the region of hot water piping process is various, may there are water channel, marsh, mine etc.For the laying of marsh district hot water piping in centralized heating project, the scheme in the past adopting mainly contains following two kinds:
One, the scheme that detours
Owing to will walking around marsh district, need to increase length of pipeline, thereby there will be long construction period, problems such as relationship between industry and agriculture that expense is high and complicated.Pipeline detours and need to increase the pipe fittings such as elbow simultaneously, increases media flow resistance, and then increases the pressure loss and the thermal losses of medium, the corresponding increase of load of heat supply initial station and booster pump station compression pump.The pipeline increasing not only increases direct operating expenses and construction period, also can affect heat supply on schedule and later stage heating quality, and vast resident living is impacted.
Two, adopt built on stilts truss to lay
At marsh district, adopt built on stilts truss support hot water piping, still, truss fabrication cost is high, hoisting difficulty is large, and in marsh district constructional difficulties, also needs to build temporary construction road and assembled place; Due to Hoisting Position restriction, need to use large tonnage crane, lifting cost is with high, and security risk is large.Truss needs periodic maintenance simultaneously, has also inevitably increased maintenance cost.Truss section of tubing need to increase the pipe fittings such as elbow, and resistance of medium increases, and also needs to add venting and drainage device, has both increased cost, has strengthened again risk of leakage.
In above-mentioned two schemes, which kind of scheme all can correspondingly increase construction cost, extend the construction period, and the scheme that detours also can increase land area, strengthen resistance of medium and heat waste.In addition, when constructing, marsh district also can there is following technical problem:
1) how to guarantee that pipeline improves bearing capacity in mud, because uneven settlement causes weld bond to bear additional stress, do not reduce working life and then fracture.
2) how to carry out effective precipitation guarantee construction normally carry out.
3) under Tao Shui long period of soaking difficult to understand, guarantee that pipeline is in ordinary life effectively operation in the cycle.
4) the floating problem of pipeline when water flowing not.
In a word, need a kind of new technology to address the above problem, insulation pipe can be constructed by safety marsh district.
Summary of the invention
In view of the above problems, the object of this invention is to provide a kind of directly-buried thermal insulation pipes by the method for construction of marsh district, with solve pipeline in mud bearing capacity, pipeline in ordinary life effectively operation in the cycle, pipeline floating during in water flowing not and problem that pipeline construction is long in time limit.
The invention provides a kind of directly-buried thermal insulation pipes by the method for construction of marsh district, comprise
Adopt gangue to build and fill out quagmire formation working surface, wherein, in the both sides of working surface, place pipe fitting, pipeline and the construction apparatus that construction plant operation needs;
On working surface, excavate the groove of directly-buried thermal insulation pipes, wherein, the section of groove adopts the structure of macrodome;
The bottom sludge of groove is partly carried out to stone and change and fill out, change the stone of filling out and form and allow the stone that underground water flows through to change packing course in the bottom of groove; Wherein, the bottom water surface of groove is no more than stone and changes packing course, and stone change packing course and the pipeline that lays between lay medium-sand seam;
In groove, excavate anchor block foundation trench;
Reach after Preset Time medium-sand seam is dry, pipeline is arranged in groove, and described pipeline is carried out to butt welding, anchor block is arranged on simultaneously and in anchor block foundation trench, is used for fixing the pipeline being placed in groove;
After butt welding completes, the pipeline being arranged in groove is carried out to back-filling in layers except weld bond part; And described weld bond is carried out to radiographic test, after welding is completely qualified, carry out pressure test, then it is carried out to Crater antiseptic insulation and residue trench backfill.
In addition, preferred scheme is that the angle of the macrodome of groove is 30 degree.
In addition, preferred scheme is, stone change the thickness filled out according to the bottom water yield of groove, silt depth and siltation year number determine, the thickness that stone changes packing course is not less than 1m; Wherein,
The specification of stone is 10～20mm, stone change packing course and the pipeline that lays between lay the thickness 200～400mm of medium-sand seam.
In addition, preferred scheme is, before pipeline is arranged in groove, also to comprise:
Adopt the solidifying rust proof paint of cyanogen and glass fibre reinforced plastics composite anti-corrosive technology to carry out corrosion-resistant thermal insulation processing to pipeline, and the pipeline welding between two that corrosion-resistant thermal insulation is processed, it is carried out to radiographic inspection simultaneously;
Radiographic inspection is complete, and pipeline qualified after radiographic inspection is arranged in groove.
In addition, preferred scheme is that the pipeline that corrosion-resistant thermal insulation is processed carries out welding between two on the ground.
In addition, preferred scheme is that corrosion-resistant thermal insulation is processed and comprised: first pipeline is carried out to impeller blasting, then brush the solidifying rust proof paint of cyanogen, spraying polyurethane after paint film intensity reaches preset requirement, last sprayed glass steel; Wherein,
The corrosion-resistant thermal insulation structure of pipeline comprises that cyanogen coagulates resin layer, polyurethane insulation coating and glass fibre reinforced plastics protective layer.
In addition, preferably scheme is, the derusting grade Sa2.5 of the solidifying resin layer of cyanogen, and the film thickness of the solidifying rust proof paint of cyanogen is not less than 90 μ m;
The thickness of polyurethane insulation coating is 50～70mm;
The thickness of glass fibre reinforced plastics protective layer is 6～10mm.
In addition, preferably scheme is, the spacing of anchor block is not more than 50m, and excavates sump in the position of anchor block foundation trench, at each sump place, submerged sewage pump is set, and submerged sewage pump is processed for groove draining.
In addition, preferred scheme is, is being provided with for guaranteeing that pipeline soaks or the compensator of safety during thermal walking at water between two anchor blocks.
In addition, preferred scheme is that compensator is the JZM type built-in type corrugated compensation arrangement with bending resistance.
From technological scheme above, directly-buried thermal insulation pipes provided by the invention, by the method for construction of marsh district, can be obtained following beneficial effect:
1) can guarantee that pipeline improves bearing capacity in mud, because uneven settlement causes weld bond to bear additional stress, not reduce working life and then fracture;
2) can carry out effective precipitation normally carries out to guarantee construction;
3) in marsh, under long-term immersion, can make pipeline in ordinary life effectively operation in the cycle;
4) when water flowing not, can make pipeline not floating;
5) adopt gangue to fill nearby, can save investment cost and reduce cost, digestibility and utilization gangue can reduce land seizure and environmental pollution;
6) can reduce pipeline at marsh district risk of leakage point, substantially not need to be serviced at ordinary times, therefore can reduce maintenance expenses.
In order to realize above-mentioned and relevant object, one or more aspects of the present invention comprise below by the feature that describes in detail and particularly point out in the claims.Explanation below and accompanying drawing describe some illustrative aspects of the present invention in detail.Yet, the indication of these aspects be only some modes that can use in the variety of way of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and along with understanding more comprehensively of the present invention, other object of the present invention and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 is by the method for construction flow chart of marsh district according to the directly-buried thermal insulation pipes of the embodiment of the present invention;
Fig. 2 is according to floor map on the working surface of the embodiment of the present invention;
Fig. 3 is the trench section schematic diagram according to the embodiment of the present invention;
Fig. 4 is the corrosion-resistant thermal insulation structure section schematic diagram according to the embodiment of the present invention;
Fig. 5 arranges schematic diagram according to the anchor block of the embodiment of the present invention and compensator.
Reference character wherein comprises: crane 1, excavator 2, groove 3, the interim storage area 4 of object, gangue 5, working surface 6, backfill element soil layer 7, medium-sand seam 8, stone change packing course 9, bottom land 10, pipeline 11, the solidifying rust preventive coating 12 of cyanogen, polyurethane insulation coating 13, glass fibre reinforced plastic insulation layer 14, anchor block 15, compensator 16.
In institute's drawings attached, identical label is indicated similar or corresponding feature or function.
Embodiment
In the following description, for purposes of illustration, for the complete understanding to one or more embodiments is provided, many details have been set forth.Yet, clearly, also can in the situation that there is no these details, realize these embodiments.Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
Fig. 1 shows according to the directly-buried thermal insulation pipes of the embodiment of the present invention by the method for construction flow process of marsh district; As shown in Figure 1, directly-buried thermal insulation pipes provided by the invention comprises by the method for construction of marsh district: S110: adopt gangue to build and fill out quagmire formation working surface; Wherein, in the both sides of working surface, place pipe fitting, pipeline and the construction apparatus that construction plant operation needs.
Particularly, at marsh district, adopt the direct backfill of gangue to form working surface, the working surface of formation must guarantee the needs of the normal excavation of groove and pipeline welding backfill.Fig. 2 shows according to the structure of plane on the working surface of the embodiment of the present invention; As shown in Figure 2, gangue backfill forms on working surface and comprises that crane 1(crane 1 is for hanging in groove by pipeline), the interim storage area 4 of excavator 2, groove 3 and object of grooving; Object can be placed pipeline, pipe fitting, sandstone etc. in interim storage area 4.That is to say, from Fig. 2, draw, the width of working surface will meet the requirement that the needs of groove 3 both sides construction plant operations and pipeline, pipe fitting etc. are deposited temporarily.
After determining face width, once fill and put in place, not depression of safety when the bearing capacity of guaranteeing working surface can guarantee that construction plant (crane 1 and excavator 2) construction thereon and sandstone, pipeline etc. transport thereon.Dangerous in order to reduce groove landslide, the quantity that pipeline should not be deposited in groove 3 both sides is too many and too of a specified duration, and the pipeline of transporting on working surface should be applied in groove 3 in time; Pipeline transport should adopt dilly, the depression to avoid working surface overload of power simultaneously; And sandstone transportation should adopt small agricultural vehicle or tractor.For cost-saving, available large vehicle is transported to sandstone or pipeline near Swampy Areas, and then carries out Secondary Transport.
It should be noted that, in the present invention, use gangue to fill formation working surface nearby, reduced gangue and deposited the soil taking, reduced again the pollution of gangue to environment.
S120: excavate the groove of directly-buried thermal insulation pipes on working surface, wherein, the section of groove adopts the structure of macrodome.
Particularly, fill and form the excavation that carries out groove after working surface, due to the easily landslides such as gangue of backfill, trench section should adopt macrodome structure; Fig. 3 shows as according to the trench section structure of the embodiment of the present invention, as shown in Figure 3, in a specific embodiment of the present invention, the slope of trench section and working surface 6 form 30 degree angles, this angle can make backfill gangue collapse, so trench section adopts macrodome structure.
As can be seen from Figure 3, groove is to excavate filling on the working surface 6 that gangue 5 forms, and first in bottom land 10, carries out stone and changes to fill out and form stone and change packing course 9, lay medium coarse sand and form medium-sand seam 8, in medium-sand seam 8, place pipeline 11, then backfill element soil, forms backfill element soil layer 7.
S130: partly carry out stone in the bottom sludge of groove and change and fill out; Wherein, the bottom water surface of groove is no more than stone and changes packing course, and stone change packing course and the pipeline that lays between lay medium-sand seam.
Particularly, because the bottom of groove exists mud, stable for the pipeline and the anchor block that guarantee to lay, mud is partly carried out to stone and change and fill out.Because stone has higher intensity and good filter performance, therefore adopt stone to change while filling out first in order to increase the bearing capacity of foundation soil, can make again underground water change packing course at stone simultaneously and flow and do not deposit, guarantee that pipeline can normal construction.Stone change the thickness filled out according to the water yield of channel bottom, silt depth and siltation year number determine, guarantee that stone changes packing course and can bear medium-weight in pipeline and pipe thereof, guarantee that pipe sedimentation is in controlled range, and will guarantee that the bottom land water surface is no more than stone and changes packing course.As shown in Figure 3, according to field condition, determine that stone changes packing course 9 thickness and is not less than 1m, stone specification is within the scope of 10～20mm; Frictional force when reducing pipeline thermal displacement, stone changes and between packing course 9 and pipeline 11, lays the medium-sand seam 8 that 200～400mm is thick.In the present embodiment, the laying depth of medium-sand seam 8 is 300mm.
S140: excavate anchor block foundation trench in groove.
Particularly, because anchor block foundation trench is than ditch groove depth, anchor block spacing is not more than 50m, because excavate sump in anchor block foundation trench position, in a specific embodiment in the present invention, two 50QW30-30-7.5 type submerged sewage pumps are set at each sump place, according to one of water yield size unlatching or two water pumps in groove, carry out draining, underground water is remained on stone below plane always, the medium-sand seam above stone is kept dry, then start to lay and welded pipe line.Wherein, pipeline welding keeps medium-sand seam dry in 24 hours after the assay was approved, to guarantee weld bond intensity.
Before pipeline is arranged in groove, also need pipeline to carry out following processing:
First adopt the solidifying rust proof paint of cyanogen and glass fibre reinforced plastics composite anti-corrosive technology to carry out corrosion-resistant thermal insulation processing to pipeline, the pipeline welding between two of then corrosion-resistant thermal insulation being processed is carried out radiographic inspection to it simultaneously.
Particularly, for the reduction of erection time, reduce the be immersed in water danger of landslide of groove, under the condition allowing at ground location, should be on the ground by pipeline welding between two, and hang in groove after radiographic inspection is qualified.Wherein, before welding between two, first to adopt the solidifying rust proof paint of cyanogen and glass fibre reinforced plastics composite anti-corrosive technology to carry out corrosion-resistant thermal insulation processing to pipeline.Corrosion-resistant thermal insulation is processed and is comprised: first pipeline is carried out to impeller blasting, then brush the solidifying rust proof paint of cyanogen, spraying polyurethane after paint film intensity reaches preset requirement, last sprayed glass steel.Wherein, the corrosion-resistant thermal insulation structure of pipeline comprises that cyanogen coagulates resin layer, polyurethane insulation coating and glass fibre reinforced plastics protective layer.
It should be noted that, Tao Shui difficult to understand (bog water) is subacidity through chemical examination, and pH value is between 5.5～6.In general, hard polyurethane foams water-proof performance is good, thermal conductivity≤0.224W/(mK), heat preservation and energy conservation effects is very good, has again the advantages such as self-adhesive intensity height and Antacid effectiveness are good simultaneously; And glass fibre reinforced plastics has good corrosion resistance, the erosion that can resist bronsted lowry acids and bases bronsted lowry fluid, heat-shielding performance is good, moisture absorption is extremely low, the life-span long and specific strength high.
Fig. 4 shows the corrosion-resistant thermal insulation structure section structure according to the embodiment of the present invention, and as shown in Figure 4, the corrosion-resistant thermal insulation structure of pipeline comprises that cyanogen coagulates resin layer 12, polyurethane insulation coating 13 and glass fibre reinforced plastics protective layer 14.Wherein, protective layer adopts glass fibre reinforced plastics, and the effect that has protection thermal insulating material and strengthen being incubated also has anti-corrosion function simultaneously; Polyurethane insulation coating 13, glass fibre reinforced plastics protective layer 14 and pipeline 11 are immersed in Tao Shui difficult to understand and are not corroded, and form composite anti-corrosives with the solidifying rust preventive coating 11 of cyanogen.Therefore the structure that adopts hard polyurethane foams insulation and glass fibre reinforced plastics protective layer, even if can guarantee that heat supply pipeline long period of soaking still can work in Tao Shui difficult to understand, its life-span and heat insulation effect are substantially unaffected.
Particularly; in the present invention, for guaranteeing construction quality, improve pipeline corrosion protection effect; pipeline corrosion protection and insulation Jun factory carry out; first pipeline is carried out to impeller blasting, derusting grade Sa2.5, then brushes the solidifying rust proof paint of cyanogen twice; the thickness of paint film is not less than 90 μ m; after paint film intensity reaches code requirement, start spraying polyurethane, sprayed glass steel, the thickness of thermal insulation layer is 50～70mm, and the thickness of protective layer is 6～10mm.In the present embodiment, the thickness of polyurethane insulation coating 13 is 60mm, and the thickness of glass fibre reinforced plastics protective layer 14 is 8mm.
S150: be dried and reach after Preset Time at medium-sand seam, pipeline qualified after radiographic inspection is arranged in groove, and pipeline is carried out to butt welding; Anchor block is arranged on simultaneously and in anchor block foundation trench, is used for fixing the pipeline being placed in groove.
Particularly, for guaranteeing that channelling does not occur bending because of floating, and then affect pipeline life, marsh district is set up anchor block, and anchor block spacing is not more than 50m.
At a specific embodiment Zhong，Mou group centralized heating project pipeline of the present invention, be
this pipe deadweight is 0.227 ton every meter, and it is 68mm that thermal insulation layer adds protective layer thickness, and in the situation that not considering to manage interior medium, in water, the maximum buoyancy in every mitron road is:
Density-self weight of pipeline=0.428*0.428*3.14*1-0.227=0.348 ton of the F=conduit volume * water maximum buoyancy of every 50m pipeline in water is 0.348*50=17.4 ton, and the weight of each anchor block is 120 tons, completely can equalizing main in water, soak and the buoyancy that produces, guarantee that pipeline can not float.
In a preferred embodiment of the present invention, between two anchor blocks, be provided with compensator.While bearing buoyancy in order to reduce pipeline and the radial force being subject to, the axial force when reducing pipeline thermal displacement simultaneously, between two anchor blocks, increase the JZM type built-in type corrugated compensation arrangement with bending resistance, guarantee that pipeline soaks in water or safety during thermal walking.
Fig. 5 shows as according to the anchor block of the embodiment of the present invention and compensator layout, as shown in Figure 5, anchor block 15 is used for fixing pipeline 11, and the distance between two anchor blocks is no more than 50m, compensator 16 is set between two anchor blocks 15, guarantees that pipeline soaks in water or safety during thermal walking.Adopt anchor block 15 fixing tubes 11, prevented that pipeline 11 from sinking, while having prevented again there is no medium in pipeline 11, be immersed in water and floating distortion.
S160: after butt welding completes, the pipeline being arranged in groove is carried out to back-filling in layers except weld bond part; Then butt welding mouth carries out radiographic test, after welding is completely qualified, carries out pressure test, then it is carried out to Crater antiseptic insulation and residue trench backfill.
Particularly, in order to reduce exposed time of groove and landslide danger, after pipeline butt completes, pipeline welding is synchronizeed and is carried out with anchor block construction, after having welded, weld bond immediately pipeline is carried out to back-filling in layers except weld bond part, reducing the simultaneously dangerous of groove landslide like this, also reducing simultaneously and in anchor block intensity, do not reached design strength preceding pipeline and be immersed in water and floating risk.After weld bond has welded, carry out radiographic test, marsh district all welds after qualified and carries out pressure test, and then carries out mouth of pipe corrosion-resistant thermal insulation and residue backfilling of pipe canal.
，Mou group adopts gangue to fill nearby in the present invention, than truss scheme, can save 500,000 yuan of investments, digestibility and utilization gangue 24000m
3, reduced land seizure and environmental pollution, also reduced risk of leakage point simultaneously, substantially do not need to be serviced at ordinary times.
By above-mentioned mode of execution, can find out, directly-buried thermal insulation pipes provided by the invention, by the method for construction of marsh district, makes pipeline in mud, improve bearing capacity, because uneven settlement causes weld bond to bear additional stress, does not reduce working life and then fracture; Can also carry out effective precipitation normally carries out to guarantee construction; In marsh, under long-term immersion, also can make pipeline in ordinary life effectively operation in the cycle; And when water flowing not, pipeline can be not floating yet.
The directly-buried thermal insulation pipes of having described the proposition according to the present invention in the mode of example above with reference to accompanying drawing is by the method for construction of marsh district.But, it will be appreciated by those skilled in the art that the directly-buried thermal insulation pipes proposing for the invention described above is by the method for construction of marsh district, can also on the basis that does not depart from content of the present invention, make various improvement.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (10)
1. directly-buried thermal insulation pipes, by a method of construction for marsh district, comprises
Adopt gangue to build and fill out quagmire formation working surface; Wherein, in the both sides of described working surface, place pipe fitting, pipeline and the construction apparatus that construction plant operation needs;
On described working surface, excavate the groove of directly-buried thermal insulation pipes; Wherein, the section of described groove adopts the structure of macrodome;
The bottom sludge of described groove is partly carried out to stone and change and fill out, change the stone of filling out and form and allow the stone that underground water flows through to change packing course in the bottom of described groove; Wherein, the bottom water surface of described groove is no more than described stone and changes packing course, and described stone change packing course and the pipeline that lays between lay medium-sand seam;
In described groove, excavate anchor block foundation trench;
At described medium-sand seam, be dried and reach after Preset Time, pipeline is arranged in described groove, and described pipeline is carried out to butt welding, anchor block is arranged in described anchor block foundation trench and is used for fixing the pipeline being placed in described groove simultaneously;
After butt welding completes, the pipeline being arranged in described groove is carried out to back-filling in layers except weld bond part; And described weld bond is carried out to radiographic test, after welding is completely qualified, carry out pressure test, then it is carried out to Crater antiseptic insulation and residue trench backfill.
2. directly-buried thermal insulation pipes as claimed in claim 1 is by the method for construction of marsh district, wherein,
The angle of the macrodome of described groove is 30 degree.
3. directly-buried thermal insulation pipes as claimed in claim 1 is by the method for construction of marsh district, wherein,
Described stone change the thickness filled out according to the bottom water yield of described groove, silt depth and siltation year number determine, the thickness that described stone changes packing course is not less than 1m; Wherein,
The specification of stone is 10～20mm, described stone change packing course and the pipeline that lays between lay the thickness 200～400mm of medium-sand seam.
4. directly-buried thermal insulation pipes as claimed in claim 1 is by the method for construction of marsh district, wherein,
Before pipeline being arranged in described groove, also comprise:
Adopt the solidifying rust proof paint of cyanogen and glass fibre reinforced plastics composite anti-corrosive technology to carry out corrosion-resistant thermal insulation processing to pipeline, and the pipeline welding between two that corrosion-resistant thermal insulation is processed, it is carried out to radiographic inspection simultaneously;
Radiographic inspection is complete, and pipeline qualified after radiographic inspection is arranged in described groove.
5. directly-buried thermal insulation pipes as claimed in claim 4 is by the method for construction of marsh district, and wherein, the pipeline that corrosion-resistant thermal insulation is processed carries out welding between two on the ground.
6. directly-buried thermal insulation pipes as claimed in claim 4 is by the method for construction of marsh district, and wherein, described corrosion-resistant thermal insulation is processed and comprised:
First described pipeline is carried out to impeller blasting, then brush the solidifying rust proof paint of cyanogen, spraying polyurethane after paint film intensity reaches preset requirement, last sprayed glass steel; Wherein,
The corrosion-resistant thermal insulation structure of described pipeline comprises that cyanogen coagulates resin layer, polyurethane insulation coating and glass fibre reinforced plastics protective layer.
7. directly-buried thermal insulation pipes as claimed in claim 6 is by the method for construction of marsh district, wherein,
The derusting grade Sa2.5 of the solidifying resin layer of described cyanogen, the film thickness of the solidifying rust proof paint of described cyanogen is not less than 90 μ m;
The thickness of described polyurethane insulation coating is 50～70mm;
The thickness of described glass fibre reinforced plastics protective layer is 6～10mm.
8. directly-buried thermal insulation pipes as claimed in claim 1 is by the method for construction of marsh district, wherein,
The spacing of described anchor block is not more than 50m, and excavates sump in the position of described anchor block foundation trench, and described in each, sump place arranges submerged sewage pump, and described submerged sewage pump is processed for described groove draining.
9. directly-buried thermal insulation pipes as claimed in claim 1 is by the method for construction of marsh district, wherein,
Between two described anchor blocks, be provided with for guaranteeing that pipeline soaks or the compensator of safety during thermal walking at water.
10. directly-buried thermal insulation pipes as claimed in claim 9 is by the method for construction of marsh district, wherein,
Described compensator is the JZM type built-in type corrugated compensation arrangement with bending resistance.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173991A (en) * | 2020-02-14 | 2020-05-19 | 广东君兆建设集团有限公司 | Municipal road pipeline construction method |
| CN112253847A (en) * | 2020-10-17 | 2021-01-22 | 中石化石油工程技术服务有限公司 | Pipeline construction method for sand geological water network area |
| CN112253848A (en) * | 2020-10-19 | 2021-01-22 | 中石化石油工程技术服务有限公司 | Sand geology water network swamp area pipeline construction method |
| CN112815145A (en) * | 2021-01-06 | 2021-05-18 | 中国化学工程第十一建设有限公司 | Double-pipe immersed pipe construction method and heating pipeline system |
| CN114263788A (en) * | 2022-03-02 | 2022-04-01 | 山东省水利科学研究院 | Hydraulic engineering is with pipeline protector who has structure of preventing sinking |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002317430A (en) * | 2001-04-20 | 2002-10-31 | Sekisui Plastics Co Ltd | Method and structure for burying material to be buried under ground |
| CN101457854A (en) * | 2007-12-11 | 2009-06-17 | 北京市煤气热力工程设计院有限公司 | Large-diameter hot water pipe non-compensation direct-burried laying method |
-
2013
- 2013-11-25 CN CN201310607200.9A patent/CN103591377B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002317430A (en) * | 2001-04-20 | 2002-10-31 | Sekisui Plastics Co Ltd | Method and structure for burying material to be buried under ground |
| CN101457854A (en) * | 2007-12-11 | 2009-06-17 | 北京市煤气热力工程设计院有限公司 | Large-diameter hot water pipe non-compensation direct-burried laying method |
Non-Patent Citations (6)
| Title |
|---|
| 刘力: "《物业基础设施与自动化管理》", 31 August 2004, article "管道的防腐与保温", pages: 39 * |
| 周昭，李建: "热力管道直埋保温管的应用", 《江西电力》, vol. 28, no. 2, 28 February 2005 (2005-02-28), pages 12 - 13 * |
| 尹国勋: "《矿山环境保护》", 31 May 2010, article "矿山生态环境治理", pages: 222-224 * |
| 李士琦等: "《管道工程施工技术与质量控制》", 31 January 2009, article "管道的安装", pages: 241-253 * |
| 王清友: "《道路工程》", 1 January 2012, article "道路路基设计", pages: 176-178 * |
| 薛孝东: "《市政用工程管理与实务》", 1 October 2010, article "市政公用工程施工技术", pages: 83-93 * |
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