CN104896194A - Installation technology of pipes and buttresses and embedded parts of pipes and buttresses in closed and narrow space - Google Patents
Installation technology of pipes and buttresses and embedded parts of pipes and buttresses in closed and narrow space Download PDFInfo
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- CN104896194A CN104896194A CN201510276970.9A CN201510276970A CN104896194A CN 104896194 A CN104896194 A CN 104896194A CN 201510276970 A CN201510276970 A CN 201510276970A CN 104896194 A CN104896194 A CN 104896194A
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- pipeline
- embedded part
- buttress
- temporary
- narrow space
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Classifications
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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
- F16L1/038—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being made in situ
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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
- F16L1/06—Accessories therefor, e.g. anchors
Abstract
The invention discloses an installation technology of pipes and buttresses and embedded parts of the pipes and the buttresses in closed and narrow space. The installation technology is used for constructing fluid medium conveying pipes, and comprises the following particular steps: (1) pipe lifting and fixing and embedded part arranging; (2) pipe welding and embedded part temporary fixing; (3) buttress formwork manufacturing and concrete pouring molding. The provided technology can service to installation of the pipes and the buttresses and the embedded parts of the pipes and the buttresses in the closed and narrow space; meanwhile, through the process, the hoisting in-place difficulty of the pipes and the buttresses and the embedded parts of the pipes and the buttresses in the above area can be reduced, repairing and adjusting procedures of connecting points between the pipes and between the pipes and the embedded parts in the pipe paving process are easily avoided or simplified, and the pipe paving quality is facilitated.
Description
Technical field
The present invention relates to the installation method of pipeline in construction, supporting element and relevant embedded part, particularly relate to a kind ofly to close, the mounting process of pipeline, buttress and embedded part thereof in narrow space.
Background technique
Along with China's rapid development of economy, urbanization process and industrial process have also been obtained continual and steady development in recent years.In existing Process of Urbanization Construction, the underground pipe network in city is huge, a loaded down with trivial details engineering; Industrial field is chemical industry and metallurgical direction particularly, and which floor of total investment of engineering the fluid line for chemical medium or the conveying of various forms water also may account for.
In the design of pipe network, except will considering process parameter, working environment, working state etc. and requiring, also need to consider pipeline, pipe fitting and the supporting element installation method in specific environment.In prior art, pipeline, pipe fitting and supporting element are generally according to first doing buttress and embedded part pipe laying again thereof, the sequence of construction of constructing from the bottom up, but under the field condition that some installing space is limited, in the closed urban underground space of long 1200 meters of 3 meters of * as high in wide 4 meters of *, the life water pipe of DN300 is installed, after buttress and embedded part are carried out, fixed angles steel framework top edge is very high apart from ground, and the space closed can not adopt existing hanging device as truck crane, and lifting is difficulty comparatively; The degree of accuracy of burying underground of embedded part simultaneously will directly affect the joint quality of connected pipeline; Usual embedded part comprises arc plate and earth anchor, when whole pipeline has little arc to bend, after usually occurring that the arc plate of rigidity is pre-buried and completing and laminating that can not be good between pipeline.The actual conditions of above pipe installation process all can cause finishing process increase to embedded part or pipeline, operating difficulties, the progress being unfavorable for pipe laying and quality.
Summary of the invention
For in above-mentioned prior art, lifting that traditional laying of pipe network step easily occurs difficulty, supporting element and pipeline can not good fit, finally can cause finishing process increase, operating difficulties to embedded part or pipeline, be unfavorable for the progress of pipe laying and the problem of quality, the invention provides a kind ofly to close, the mounting process of pipeline, buttress and embedded part thereof in narrow space.
Particularly, provided by the inventionly to close, the mounting process of pipeline, buttress and embedded part thereof in narrow space, for the construction of flowing medium conveyance conduit, this mounting process comprises the following concrete steps that order is carried out:
1), Pipeline lift is fixed and is arranged embedded part;
2), pipeline welding and embedded part temporary fixed;
3), buttress template construct and concreting shaping;
The specific implementation step that in step 1), Pipeline lift is fixing is:
Design 1-1), by each pipeline section of pipeline being transported to pipeline is laid on route, and each pipeline section is laid route arrangement placement along the design of pipeline;
1-2), adopt hanging device by each pipeline section lifting to designed elevation, and with supporting apparatus, each pipeline section is fixed, adopt spot welding to be fixedly connected with to adjacent pipeline section docking point and obtain temporary pipeline;
The concrete methods of realizing arranging embedded part in step 1) is: earth anchor is welded to connect the outside in arc backing plate;
Step 2) specific implementation step be:
2-1), by arc backing plate be fastened on directly over temporary pipeline, and weld angle frame on embedded part;
2-2), by step 2-1) embedded part that obtains slides upset 180 ° along temporary pipeline side make this embedded part be positioned at immediately below temporary pipeline, by the bottom applying power upwards of jacking apparatus to this embedded part, fitted in the bottom of this embedded part and temporary pipeline;
2-3), the position of embedded part on temporary pipeline is fixed by link;
2-4), complete the welding of pipeline section docking point adjacent on temporary pipeline, obtain pipeline.
Concrete, in above step, comprise and in prior art in pipe laying mounting process, buttress is set, buttress embedded part and pipe laying three steps are set, but the process route sequencing of more than prior art three steps is followed successively by: arrange buttress, buttress arranges embedded part or embedded part and buttress is set synchronously carries out, channelling on embedded part, therefore being distinguished as of pipe laying mounting process in technique provided by the invention and prior art, described pipe laying step is prior to arranging buttress step, it is synchronous with pipe laying step that buttress embedded part step is set.In this process route, do not need to walk around buttress or embedded part due to during lifting, make the hoisting height of pipeline section be the designed elevation of pipeline, like this in the narrow space being unfavorable for lifting, adopt this technique greatly can reduce the difficulty of construction of pipe laying; In this process route, due to the process route adopting whole section or part connecting tube in advance, arrange embedded part on pipeline, arrange buttress again, in step 2) in can ensure that arc backing plate and pipeline are fitted completely, avoid in conventional processing routes to make pipeline obtain excellent support, need constantly to revise docking port and/or arc backing plate, regulate, even arrange the troublesome operation such as abnormal tube section in installation process, what be beneficial to pipeline lays efficiency and laying quality; To arrange buttress, namely step 3) is arranged on finally, pipeline in the lifting pipeline process easily occurred can be avoided in existing technique to collide with buttress or embedded part, causes the situation of the damages such as pipe surface, buttress, embedded part; Step 2) in arc backing plate is fastened on the process route welding angle frame on temporary pipeline and arranges, achieve and respectively each several part of embedded part is promoted on temporary pipeline, and angle frame be welded and fixed in process, temporary pipeline is to the supporting & stablizing of arc backing plate, therefore step 2) concrete technology route selection can when not needing mechanical hoisting device, complete in place on temporary pipeline of embedded part welding forming and embedded part.
Further technological scheme is:
As a kind of avoid to lifting after to pipeline section carry out pipeline section in the radial direction position adjustment arrangement and method for construction, to simplify the complex structure degree of pipeline lifting appliance, pipeline section is along described step 1-1) in each pipeline section lay along the design of pipeline the particular location that route arrangement places and determine according to following methods: carry out buttress unwrapping wire according to designing requirement laying on route of pipeline, the axis laying route of pipeline section composition is positioned at directly over the center line of buttress.The realization of above technique is by arranging gallows frame or shear legs and the pipeline section hanging device arranging chain block on gallows frame or shear legs realizes.
For the quantity for the lifting device of lifting pipeline in minimizing pipe laying process, reduce the stressed of single lifting device, be beneficial to the type selecting of lifting device, described step 1-2) concrete construction method be: by first pipeline section by supporting apparatus complete fixing after, hanging device is adopted to be promoted by second pipeline section adjacent with first pipeline section, by supporting apparatus complete second pipeline section fixing after, connect in the docking point spot welding of two pipeline sections; Adopt above method to complete the 3rd, the 4th until N root, N+1 root pipeline section are mutually connected and obtained temporary pipeline, wherein, N is integer.
As above minimizing lifting device quantity, reduce the stressed specific implementation of single lifting device, the length of the temporary pipeline obtained is not more than 100m.The setting of this length simultaneously also helps efficiency and the Security of pipeline mounting construction.
As a kind of concrete embedded part implementation that position adjusts on pipeline not needing complicated auxiliary device, reduce pipe laying personnel labor intensity, in step 2-2) in, embedded part slides upset 180 ° concrete construction method along temporary pipeline side is: adopt flexible strand or circumferential band, after making flexible strand or circumferential band walk around the lower end of temporary pipeline, the two ends of flexible strand or circumferential band are all fixed on embedded part, then around the axis rotation embedded part of temporary pipeline and the assemblying body of flexible strand or circumferential band, until embedded part is positioned at immediately below temporary pipeline.On temporary pipeline, form the ring structure supported by temporary pipeline after above flexible strand or circumferential band and embedded part combine, just can complete the location of embedded part on temporary pipeline by rotary annular structure.In practice of construction, angle frame is generally welded on earth anchor, and namely the specific operation process of this method is: be first inverted established angle steel framework on the assembly parts of arc plate and earth anchor by design size, then is inverted by the mode rotated, promotes, fixes, meanwhile, immovable point is arranged on pipeline and pushes up.
For reducing pipeline in use because the size of frictional force between the pipeline that causes of the factor such as vibrations of pipeline and embedded part; to reach the object of the surface of contact of protective conduit or embedded part; in step 2-2) in; power is upwards being applied to the bottom of this embedded part by jacking apparatus; make before the bottom of this embedded part and temporary pipeline fits, also to comprise the step of laying oiling agent on the inner concave of arc plate.
Because the hot factor of welding process will affect the corrosion resistance of solder joint, for avoiding solder joint exposed in air ambient, be beneficial to the oxide etch avoiding solder joint, in step 2-3) in, link and embedded part are welded to connect, and both immovable points are positioned on angle frame.Due in follow-up buttress setting up procedure, angle frame is by part or all of landfill in buttress concrete, and like this, above setting is convenient to be protected corresponding solder joint by concrete.
As a kind of implementation of step 3), the concrete methods of realizing of step 3) is: complete buttress template construct according to the size that arranges of buttress, and angle frame is positioned at the region that buttress template surrounds, and cast concrete in the region that backward buttress template surrounds, after concrete strengthening, separate support device, jacking apparatus and link.
For reducing the quantity of the buttress template, support device, jacking apparatus and the link that prepare for it in pipe laying process, described step 3) is carried out successively along the route segments that lays of pipeline.After more than arranging buttress template, support device, jacking apparatus and the link being convenient to realize separating this section, buttress template, support device, jacking apparatus and link can be used in the laid processes of subsequent pipeline.
The invention provides one or more technological scheme, at least there is following beneficial effect or advantage:
1, process route provided by the invention, do not need to walk around buttress or embedded part due to during lifting, make the hoisting height of pipeline section be the designed elevation of pipeline, like this in the narrow space being unfavorable for lifting, adopt this technique greatly can reduce the difficulty of construction of pipe laying.
2, in this process route, due to the process route adopting whole section or part connecting tube in advance, arrange embedded part on pipeline, arrange buttress again, in step 2) in can ensure that arc backing plate and pipeline are fitted completely, avoid in conventional processing routes to make pipeline obtain excellent support, need constantly to revise docking port and/or arc backing plate, regulate, even arrange the troublesome operation such as abnormal tube section in installation process, what be beneficial to pipeline lays efficiency and laying quality.
3, will arrange buttress, namely step 3) is arranged on finally, pipeline in the lifting pipeline process easily occurred can be avoided in existing technique to collide with buttress or embedded part, causes the situation of the damages such as pipe surface, buttress, embedded part.
4, step 2) in arc backing plate is fastened on the process route welding angle frame on temporary pipeline and arranges, achieve and respectively each several part of embedded part is promoted on temporary pipeline, and angle frame be welded and fixed in process, temporary pipeline is to the supporting & stablizing of arc backing plate, therefore step 2) concrete technology route selection can when not needing mechanical hoisting device, complete in place on temporary pipeline of embedded part welding forming and embedded part.
Accompanying drawing explanation
Fig. 1 be of the present inventionly to close, the flow chart of the mounting process specific embodiment of pipeline, buttress and embedded part thereof in narrow space.
Embodiment
The invention provides the mounting process of pipeline, buttress and the embedded part thereof in closed, narrow space, for solving: in prior art, lifting that traditional laying of pipe network step easily occurs difficulty, supporting element and pipeline can not good fit, finally can cause finishing process increase, operating difficulties to embedded part or pipeline, be unfavorable for the progress of pipe laying and the problem of quality.Technological method provided by the invention can serve the installation of pipeline, buttress and embedded part thereof in closed, narrow space, simultaneously this technique can reduce above zone duct, buttress and embedded part thereof hoisted in position difficulty, be beneficial to avoid or simplify pipeline section in pipe laying process and each tie point of pipeline section, pipeline and embedded part reparation adjustment programme, be beneficial to pipe laying quality, can draw as those skilled in the art, this mounting process can be widened in the Pipe installing applying to existing other field.Below in conjunction with embodiment, the present invention is described in further detail, but technique provided by the invention is not limited only to following examples:
Embodiment 1:
As Fig. 1, the invention provides a kind ofly to close, the mounting process of pipeline, buttress and embedded part thereof in narrow space, for the construction of flowing medium conveyance conduit, this mounting process comprises the following concrete steps that order is carried out:
1), Pipeline lift is fixed and is arranged embedded part;
2), pipeline welding and embedded part temporary fixed;
3), buttress template construct and concreting shaping;
The specific implementation step that in step 1), Pipeline lift is fixing is:
Design 1-1), by each pipeline section of pipeline being transported to pipeline is laid on route, and each pipeline section is laid route arrangement placement along the design of pipeline;
1-2), adopt hanging device by each pipeline section lifting to designed elevation, and with supporting apparatus, each pipeline section is fixed, adopt spot welding to be fixedly connected with to adjacent pipeline section docking point and obtain temporary pipeline;
The concrete methods of realizing arranging embedded part in step 1) is: earth anchor is welded to connect the outside in arc backing plate;
Step 2) specific implementation step be:
2-1), by arc backing plate be fastened on directly over temporary pipeline, and weld angle frame on embedded part;
2-2), by step 2-1) embedded part that obtains slides upset 180 ° along temporary pipeline side make this embedded part be positioned at immediately below temporary pipeline, by the bottom applying power upwards of jacking apparatus to this embedded part, fitted in the bottom of this embedded part and temporary pipeline;
2-3), the position of embedded part on temporary pipeline is fixed by link;
2-4), complete the welding of pipeline section docking point adjacent on temporary pipeline, obtain pipeline.
In the above step of the present embodiment, comprise and in prior art in pipe laying mounting process, buttress is set, buttress embedded part and pipe laying three steps are set, but the process route sequencing of more than prior art three steps is followed successively by: arrange buttress, buttress arranges embedded part or embedded part and buttress is set synchronously carries out, channelling on embedded part, therefore being distinguished as of pipe laying mounting process in technique provided by the invention and prior art, described pipe laying step is prior to arranging buttress step, it is synchronous with pipe laying step that buttress embedded part step is set.In this process route, do not need to walk around buttress or embedded part due to during lifting, make the hoisting height of pipeline section be the designed elevation of pipeline, like this in the narrow space being unfavorable for lifting, adopt this technique greatly can reduce the difficulty of construction of pipe laying; In this process route, due to the process route adopting whole section or part connecting tube in advance, arrange embedded part on pipeline, arrange buttress again, in step 2) in can ensure that arc backing plate and pipeline are fitted completely, avoid in conventional processing routes to make pipeline obtain excellent support, need constantly to revise docking port and/or arc backing plate, regulate, even arrange the troublesome operation such as abnormal tube section in installation process, what be beneficial to pipeline lays efficiency and laying quality; To arrange buttress, namely step 3) is arranged on finally, pipeline in the lifting pipeline process easily occurred can be avoided in existing technique to collide with buttress or embedded part, causes the situation of the damages such as pipe surface, buttress, embedded part; Step 2) in arc backing plate is fastened on the process route welding angle frame on temporary pipeline and arranges, achieve and respectively each several part of embedded part is promoted on temporary pipeline, and angle frame be welded and fixed in process, temporary pipeline is to the supporting & stablizing of arc backing plate, therefore step 2) concrete technology route selection can when not needing mechanical hoisting device, complete in place on temporary pipeline of embedded part welding forming and embedded part.
The mounting process route of the present embodiment is: be first preparation of construction, preparation of construction comprises that arrangement and method for construction confirms, confides a technological secret, construction plant, personnel march into the arena, carry out step 1), 2 subsequently) and 3), in step 1), also comprise and carry out surveying setting-out according to the pipe laying route of design on the spot, think that pipeline section lays route arrangement placement along the design of pipeline and provides reference, in step 2) in, also comprise the weld inspection to weld seam on pipeline, after step 3), also comprise the purging to pipeline and the hydrostatic test.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as a kind of avoid to lifting after to pipeline section carry out pipeline section in the radial direction position adjustment arrangement and method for construction, to simplify the complex structure degree of pipeline lifting appliance, pipeline section is along described step 1-1) in each pipeline section lay along the design of pipeline the particular location that route arrangement places and determine according to following methods: carry out buttress unwrapping wire according to designing requirement laying on route of pipeline, the axis laying route of pipeline section composition is positioned at directly over the center line of buttress.The realization of above technique is by arranging gallows frame or shear legs and the pipeline section hanging device arranging chain block on gallows frame or shear legs realizes.
For the quantity for the lifting device of lifting pipeline in minimizing pipe laying process, reduce the stressed of single lifting device, be beneficial to the type selecting of lifting device, described step 1-2) concrete construction method be: by first pipeline section by supporting apparatus complete fixing after, hanging device is adopted to be promoted by second pipeline section adjacent with first pipeline section, by supporting apparatus complete second pipeline section fixing after, connect in the docking point spot welding of two pipeline sections; Adopt above method to complete the 3rd, the 4th until N root, N+1 root pipeline section are mutually connected and obtained temporary pipeline, wherein, N is integer.
As above minimizing lifting device quantity, reduce the stressed specific implementation of single lifting device, the length of the temporary pipeline obtained is not more than 100m.
As a kind of concrete embedded part implementation that position adjusts on pipeline not needing complicated auxiliary device, reduce pipe laying personnel labor intensity, in step 2-2) in, embedded part slides upset 180 ° concrete construction method along temporary pipeline side is: adopt flexible strand or circumferential band, after making flexible strand or circumferential band walk around the lower end of temporary pipeline, the two ends of flexible strand or circumferential band are all fixed on embedded part, then around the axis rotation embedded part of temporary pipeline and the assemblying body of flexible strand or circumferential band, until embedded part is positioned at immediately below temporary pipeline.On temporary pipeline, form the ring structure supported by temporary pipeline after above flexible strand or circumferential band and embedded part combine, just can complete the location of embedded part on temporary pipeline by rotary annular structure.
For reducing pipeline in use because the size of frictional force between the pipeline that causes of the factor such as vibrations of pipeline and embedded part; to reach the object of the surface of contact of protective conduit or embedded part; in step 2-2) in; power is upwards being applied to the bottom of this embedded part by jacking apparatus; make before the bottom of this embedded part and temporary pipeline fits, also to comprise the step of laying oiling agent on the inner concave of arc plate.
Because the hot factor of welding process will affect the corrosion resistance of solder joint, for avoiding solder joint exposed in air ambient, be beneficial to the oxide etch avoiding solder joint, in step 2-3) in, link and embedded part are welded to connect, and both immovable points are positioned on angle frame.Due in follow-up buttress setting up procedure, angle frame is by part or all of landfill in buttress concrete, and like this, above setting is convenient to be protected corresponding solder joint by concrete.
Embodiment 3:
The present embodiment is further qualified on the basis of any one embodiment above, as a kind of implementation of step 3), the concrete methods of realizing of step 3) is: complete buttress template construct according to the size that arranges of buttress, and angle frame is positioned at the region that buttress template surrounds, and cast concrete in the region that backward buttress template surrounds, after concrete strengthening, separate support device, jacking apparatus and link.
For reducing the quantity of the buttress template, support device, jacking apparatus and the link that prepare for it in pipe laying process, described step 3) is carried out successively along the route segments that lays of pipeline.After more than arranging buttress template, support device, jacking apparatus and the link being convenient to realize separating this section, buttress template, support device, jacking apparatus and link can be used in the laid processes of subsequent pipeline.
Above content is the further description done the present invention in conjunction with concrete preferred implementation, can not assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, not departing from other mode of executions drawn under technological scheme of the present invention, all should be included in protection scope of the present invention.
Claims (9)
1. close, the mounting process of pipeline, buttress and embedded part thereof in narrow space, for the construction of flowing medium conveyance conduit, it is characterized in that, this mounting process comprises the following concrete steps that order is carried out:
1), Pipeline lift is fixed and is arranged embedded part;
2), pipeline welding and embedded part temporary fixed;
3), buttress template construct and concreting shaping;
The specific implementation step that in step 1), Pipeline lift is fixing is:
Design 1-1), by each pipeline section of pipeline being transported to pipeline is laid on route, and each pipeline section is laid route arrangement placement along the design of pipeline;
1-2), adopt hanging device by each pipeline section lifting to designed elevation, and with supporting apparatus, each pipeline section is fixed, adopt spot welding to be fixedly connected with to adjacent pipeline section docking point and obtain temporary pipeline;
The concrete methods of realizing arranging embedded part in step 1) is: earth anchor is welded to connect the outside in arc backing plate;
Step 2) specific implementation step be:
2-1), by arc backing plate be fastened on directly over temporary pipeline, and weld angle frame on embedded part;
2-2), by step 2-1) embedded part that obtains slides upset 180 ° along temporary pipeline side make this embedded part be positioned at immediately below temporary pipeline, by the bottom applying power upwards of jacking apparatus to this embedded part, fitted in the bottom of this embedded part and temporary pipeline;
2-3), the position of embedded part on temporary pipeline is fixed by link;
2-4), complete the welding of pipeline section docking point adjacent on temporary pipeline, obtain pipeline.
2. close as claimed in claim 1, the mounting process of pipeline, buttress and embedded part thereof in narrow space, it is characterized in that, described step 1-1) in each pipeline section lay along the design of pipeline the particular location that route arrangement places and determine according to following methods: carry out buttress unwrapping wire according to designing requirement laying on route of pipeline, the axis laying route of pipeline section composition is positioned at directly over the center line of buttress.
3. close as claimed in claim 1, the mounting process of pipeline, buttress and embedded part thereof in narrow space, it is characterized in that, described step 1-2) concrete construction method be: by first pipeline section by supporting apparatus complete fixing after, hanging device is adopted to be promoted by second pipeline section adjacent with first pipeline section, by supporting apparatus complete second pipeline section fixing after, connect in the docking point spot welding of two pipeline sections; Adopt above method to complete the 3rd, the 4th until N root, N+1 root pipeline section are mutually connected and obtained temporary pipeline, wherein, N is integer.
4. close as claimed in claim 3, the mounting process of pipeline, buttress and embedded part thereof in narrow space, it is characterized in that, the length of the temporary pipeline obtained is not more than 100m.
5. close as claimed in claim 1, the mounting process of pipeline, buttress and embedded part thereof in narrow space, it is characterized in that, in step 2-2) in, embedded part slides upset 180 ° concrete construction method along temporary pipeline side is: adopt flexible strand or circumferential band, after making flexible strand or circumferential band walk around the lower end of temporary pipeline, the two ends of flexible strand or circumferential band are all fixed on embedded part, then around the axis rotation embedded part of temporary pipeline and the assemblying body of flexible strand or circumferential band, until embedded part is positioned at immediately below temporary pipeline.
6. close as claimed in claim 1, the mounting process of pipeline, buttress and embedded part thereof in narrow space, it is characterized in that, in step 2-2) in, power is upwards being applied to the bottom of this embedded part by jacking apparatus, make before the bottom of this embedded part and temporary pipeline fits, also to comprise the step of laying oiling agent on the inner concave of arc plate.
7. close as claimed in claim 1, the mounting process of pipeline, buttress and embedded part thereof in narrow space, it is characterized in that, in step 2-3) in, link and embedded part are welded to connect, and both immovable points are positioned on angle frame.
8. as the mounting process of closing in claim 1 to 7 as described in any one, pipeline, buttress and embedded part thereof in narrow space, it is characterized in that, the concrete methods of realizing of step 3) is: complete buttress template construct according to the size that arranges of buttress, and angle frame is positioned at the region that buttress template surrounds, and cast concrete in the region that backward buttress template surrounds, after concrete strengthening, separate support device, jacking apparatus and link.
9. close as claimed in claim 8, the mounting process of pipeline, buttress and embedded part thereof in narrow space, it is characterized in that, described step 3) is carried out successively along the route segments that lays of pipeline.
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| CN201510276970.9A CN104896194B (en) | 2015-05-27 | 2015-05-27 | Installation technology of pipes, buttresses and embedded parts in closed and narrow space |
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| CN201510276970.9A CN104896194B (en) | 2015-05-27 | 2015-05-27 | Installation technology of pipes, buttresses and embedded parts in closed and narrow space |
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| CN105715051A (en) * | 2016-03-14 | 2016-06-29 | 重庆建工第三建设有限责任公司 | Hardbound house wall face pipeline reserved port installation method |
| CN106894440A (en) * | 2017-04-14 | 2017-06-27 | 中建八局第建设有限公司 | A kind of multiple rows of pressure pipe back buttress and its construction method |
| CN106949315A (en) * | 2017-04-05 | 2017-07-14 | 中国核工业第五建设有限公司 | The installation method of main steam line in AP1000 nuclear power stations |
| CN107631846A (en) * | 2017-11-06 | 2018-01-26 | 中建安装工程有限公司 | A kind of pressure-measuring method of long distance pipeline |
| CN111928015A (en) * | 2020-07-21 | 2020-11-13 | 中国化学工程第七建设有限公司 | Pipeline dismantling and installing construction method in narrow space |
| CN113983242A (en) * | 2021-09-06 | 2022-01-28 | 中国水电四局（兰州）机械装备有限公司 | Large pipeline splicing device and large pipeline splicing method |
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| CN111928015A (en) * | 2020-07-21 | 2020-11-13 | 中国化学工程第七建设有限公司 | Pipeline dismantling and installing construction method in narrow space |
| CN111928015B (en) * | 2020-07-21 | 2021-09-07 | 中国化学工程第七建设有限公司 | Pipeline dismantling and installing construction method in narrow space |
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