CN106764055A - Push pipe sight alignment construction - Google Patents
Push pipe sight alignment construction Download PDFInfo
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- CN106764055A CN106764055A CN201710013486.6A CN201710013486A CN106764055A CN 106764055 A CN106764055 A CN 106764055A CN 201710013486 A CN201710013486 A CN 201710013486A CN 106764055 A CN106764055 A CN 106764055A
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- Prior art keywords
- push pipe
- construction
- line
- well
- jacking
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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
Abstract
The invention discloses push pipe sight alignment construction, including：（1）Preparation of construction and instrument are configured；（2）Push pipe well is excavated and all skirts cover construction；（3）Determine the both sides central point and line of the push pipe borehole wall；（4）Three spot projections are taken on line in push pipe well, and connects 3 points of composition projection lines；（5）Projection line is guided in push pipe pipeline with laser marker；（6）Carry out jacking construction.The present invention determines straight line with two pipe wells, three spot projections are in push pipe well on cut-off line, the three-point shape of projection is in alignment, the vertical line of cross hairs is projected out with laser marker and projection line coincides, x wire overlaps with the left and right quadrantal points of push pipe, and the midpoint of cross hairs overlaps with the midpoint of push pipe pipeline, it is ensured that jacking construction path is correct, prevent push pipe from being shifted in inlet pipe, improve the accuracy of jacking construction.
Description
Technical field
The present invention relates to pipe jacking construction method, specially push pipe sight alignment construction.
Background technology
Jacking construction is exactly non-excavating construction method, is a kind of piping laying construction technology do not excavated or excavate less.
Construction by pipeline jacking method is exactly the top power produced by means of jacking device in working pit, overcomes the frictional force of pipeline and surrounding soil,
During pipeline headed into soil by the gradient of design, and the earthwork is transported.One section pipe completion is headed into after soil layer, then lower second section pipe
Son continues jacking.Its principle is by means of the main top thrust such as oil cylinder and pipeline enclosure, relay well, tool pipe or development machine from work
It is advanced to always in reception hole through soil layer in hole and is sling.After pipeline follows tool pipe or development machine closely, it is embedded between two holes.
In jacking construction, underground boring construction and push pipe process are not easy to ensure path point-blank, if road
Footpath bends, and push pipe can shift in tunneling and inlet pipe, reduce the accuracy of jacking construction, can also be produced because push pipe offsets
Give birth to Secondary Disturbance and destroy sub-surface earth resource.
The content of the invention
The purpose of the present invention is to make full use of original structure condition, straight line is determined with two pipe wells, on cut-off line
Three spot projections are in push pipe well, and the three-point shape of projection is in alignment, then are projected out the vertical of cross hairs with laser marker
Coincided with projection line to line, x wire overlaps with the left and right quadrantal points of push pipe, the midpoint of cross hairs and the midpoint of push pipe pipeline
Overlap, it is ensured that jacking construction path is correct, prevents push pipe from being shifted in inlet pipe, improve the accuracy of jacking construction.
The present invention is achieved through the following technical solutions：Push pipe sight alignment construction, one is determined with two pipe wells
Straight line, in push pipe well, the three-point shape of projection is in alignment, it is ensured that jacking construction path is just for three spot projections on cut-off line
Really, comprise the following steps：
(1) preparation of construction and instrument configuration are carried out first, and the instrument includes：For determining subpoint on push pipe well
Total powerstation；For projection line to be guided to the laser marker in push pipe pipeline；Steel tape for determining push pipe well midpoint；For
The ink fountain made marks on push pipe well；For three spot projections will being chosen on connecting line to the ceiling hammer in push pipe well；Quite
In connecting line, for the white clear plastic cord of two subpoints of connecting jacking pipe borehole wall both sides；
(2) and then the excavation and all skirts of push pipe well are carried out cover construction；
(3) after push pipe well digs, respectively determine that one is used to determine push pipe jacking direction at push pipe well Liang Gecebi centers
Point, and two points are drawn a straight line with white clear plastic cord；
(4) three spot projections are taken on connecting line in push pipe well, by projection after three points connect to form projection line；
(5) laser marker is set up in push pipe well, projection line is guided in push pipe pipeline；
(6) the jacking construction operation of push pipe pipeline is carried out.
Preparation of construction and instrument configuration are carried out first, and wherein preparation of construction includes：
A) explanation of compilation and foundation：Relevant law, regulation, regulatory documents, standard, specification and drawing (national standard drawings),
Design of Construction Organization etc..
B) push pipe sight alignment construction characteristic, pipe well floor plan and push pipe path position figure, construction requirement and technology
Guaranteed conditions, the size and thickness of specific, concrete push pipe, duct bottom absolute altitude, the model of jack, situations such as report is surveyed on ground etc..
C) construction plan：Construction schedule, material and facilities plan etc..
D) construction technology technology：Push pipe sight alignment construction method, technological requirement, the mechanical performance index of material, construction
Setting and inspection, acceptance requirement etc..
E) construction safety safeguard measure：Push pipe sight alignment construction manager organization, technology measure, construction
Emergency plan HSE.
F) Workforce Planning：Including full-time production safety management personnel, the configuration of special operation workers etc..
Wherein, pipe jacking construction method it is selected should according to the landform along construction, engineering and hydrogeology, traffic,
Above-ground structures, underground utilities and whether there is the actual conditions such as underground obstacle and after the requirement to earth's surface Deformation control considers
Make selected, it is necessary to ensure that safety, it is ensured that quality, it is economic and practical, save the area.The sequence of construction of push pipe should be from whole draining system
General examination for students from various schools consider, typically preferably since downstream, enter the start of line driving section push pipe when, should select execution conditions preferably, technical risk compared with
Few, journey shorter location in top is carried out, while make the test and analysis work of necessary site technology data, to understand underground reality
Border soil property, adapts to construction environment, grasps pipe jacking equipment transfer regularity, rationalization operating personnel, by the top of starting driving section
Enter brief summary, further the every construction technical data of adjustment, optimizes next step jacking pipe construction process.All pipe jacking equipments have to pass through
Maintenance, through job site can be transported into after the assay was approved.Unit and whole machine connection must be carried out when working pit is installed entering
Dynamic debugging, must implement regular servicing system in jacking.Should be built by construction quality, safety, civilized construction, protection ground is ensured
Build thing and underground utilities, maintain road traffic etc. to require, according to different engineering geological, hydrogeology and construction environment and condition conjunction
Reason selection push pipe head.
It is worth noting that, why selecting three points to be projected, it is well known that 2 points determine straight line, projection
Can determine three straight lines to three points in push pipe well, if three straight lines without conllinear, illustrate determination subpoint when
Time has error, it is necessary to project again, it is possible to avoid projection when error, improve precision, and if choose more than three
Point projected, its principle as taking three points and project and be, therefore the invention is not limited in choosing three points
Projected, the point for choosing more than three is same in the scope of the present invention.
Further, the construction that all skirts are covered in the step (2) includes：Construction is enclosed to cover and sets up construction warning sign and friendship
Lead to guide plate, set up sound insulation canopy, job site implementation hard place on construction ground.Wherein this engineering construction pipeline both sides and work
Construction is covered in well, inspection shaft position using complete enclosing, and the construction temporary facility set in building site such as site office, life, production are used
Face to set etc. and should hang up distinguishing mark, it is ensured that be bright clean and tidy, construction is enclosed to cover and sets up construction warning sign and traffic guide board, and night hangs
Warning lamp, and ensure there are enough lighting installations at night along construction；Construction period, according to supervising engineer, owner or work as
Ground administration request, in desired when and where, there is provided and maintain all of houselights, backplate, enclose cover, fence, warning letter
Number mark and operator on duty, engineering is protected and for the public provides safety and facilitate；Construction period takes effective measures guarantor
Along card unit, the discrepancy of resident and road it is unimpeded carry out original crossing scope pavement construction when, interim sidewalk is first set,
To ensure the unimpeded and safe of gateway and road；Strengthen the safety devices at construction crossing, configure eye-catching road safety warning
Label, it is ensured that road construction safety.
For the control of noise：Sound insulation canopy is set up to stand-by generator and log splitter, generator and log splitter are reduced as far as possible
The noise pollution for occurring in use；Night does not carry out construction operation, because of engineering technology, quality the need for, during work
Between when needing to be extended down to night, could extend the activity duration after reporting administrative department for construction and the approval of management department；Do not make at night
With the big construction machinery of noise.
For the control for preventing air pollution (dust-proof)：Reasonable arrangement operation side and arrangement temporary facility.It is to apply
Influence of the work to surrounding environment is minimized, and aggregate chips stabilized zone uses blending station central mix, and concrete uses Commercial Concrete.Dumper is used
Canvas and lid set and other items are covered, it is easy to cause the fines heap of dust, are given and suitably cover or sprinkle water；Carry out hard place in job site
Change, it is steady that 15cm solid cements are repaiied on the ground such as building site gate internal and external channel, temporary facility flooring, placing of material place, processing space
Given layer, surrounding sets good discharge conduit；All construction machineries carry out service work, arrange special messenger to be responsible for spilling for construction road
Water conservancy project is made, it is ensured that place moistens, and reduces dust pollution；Above measure is responsible for passing through block and is implemented by project manager, checks small by unit
The responsible inspection of group.
Further, in the step (3) push pipe borehole wall both sides central point by by total powerstation frame in push pipe well
On midpoint, camera lens sights the midpoint of another push pipe well to determine.Push pipe borehole wall central point is determined using total powerstation, compared to existing
The advantage of somebody's work tape measure is can both to be positioned exactly by light, and error is relatively much smaller, again convenient
Measurement, because push pipe well itself just belongs to the dell excavated, using scale it is difficult to hold the boundary at push pipe well edge, at two
If side is all measured using scale, error can be all produced equivalent to both sides so that error further expands, and total powerstation
It is substantially accurately more than artificial tape measure using light using optical alignment, for preventing push pipe from occurring in inlet pipe partially
Shifting has evades effect well.
Further, three spot projections that will be taken on connecting line in the step (4) include to the step in push pipe well：
(4.1) the messenger wire one end on ceiling hammer is fixed on the point selected by connecting line, lowering ceiling hammer；
(4.2) after after ceiling hammer stabilization, in the push pipe well ceiling hammer tup just to position on be marked with ink fountain.
Further, laser marker guides to when in push pipe pipeline projection line in the step (5), with the laser line of ink marker
The vertical line of the cross hairs that instrument is projected out coincides with projection line, and x wire overlaps with the left and right quadrantal points of push pipe, cross hairs
Midpoint overlaps with the midpoint of push pipe pipeline.The central point during cross hairs that laser marker is projected out, as push pipe inlet pipe, cross
The vertical line and projection line of line overlap, direction of advance when projection line is push pipe inlet pipe, are optically intended to the side of inlet pipe
To in mark to push pipe pipeline, can well ensure that pipeline is in the right direction in inlet pipe, substantially increase the accuracy of construction, keep away
Exempt from secondary doing over again.
Further, needing the parameter of monitoring in the step (6) during the jacking construction operation of push pipe pipeline includes：Push pipe
Development machine releases pressure value, the unearthed rate of jack-in process, the pipeline jack-in process central axis in the soil layer of 0.8~1.0m of hole
Side-play amount, ground settlement value.
Determine the pressure value in actual soil layer：Pipe jacking tunnelling machine blow slowly release 0.8~1.0m of hole soil layer after stop top
Enter, after waiting 20h quietly, the value on observation pipe jacking tunnelling machine earth pressure table, if this duration is not inconsistent with calculated value, with practical measurement
Value is defined, and the original propelling pressure controlling value for calculating and gross thrust value are adjusted correspondingly.
Spout direction controlling on pipeline top when appearing：Two section pipe of concretes after head use with driving head and are rigidly connected to carry
Linearity during jacking high.
Jacking control parameter：
1. it is unearthed and controls：Unearthed rate controlling value 95%~98%, adjusts in time according to actual conditions during jacking, with jacking oil
The extension elongation of cylinder is unearthed to measure, i.e. jacking oil cylinder stretches out 75mm, and be unearthed about 0.48m3。
2. axial line control：A central axis is surveyed when pipeline is per 250~300mm of jacking, if entering once discovery movement tendency
Row correction, as side-play amount >=20mm, stops jacking at once, and ascertain the reason jacking again after having measure to ensure, it is ensured that push pipe axis
It is correct, duty survey duty entangle.
3. soil pressure force value control：It is ± the 20kPa of Measured Soil pressure value.
4. settlement Control：Soil pressure controlling value, the amount of being unearthed are adjusted in time according to surface subsidence supervision feedback information to be spouted with top
Speed, if finding, sedimentation value is exceeded, top is stopped immediately and is spouted, and ascertains the reason, and taking after corresponding measure could jacking again, it is ensured that ground
Underground pipelines with above ground structure safely know by nothing.
The present invention compared with prior art, has the advantage that and has the beneficial effect that：
(1) present invention determines straight line with two pipe wells, on cut-off line three spot projections in push pipe well, projection
Three-point shape is in alignment, is projected out the vertical line of cross hairs with laser marker and projection line coincides, x wire with top
The left and right quadrantal points of pipe overlaps, and the midpoint of cross hairs overlaps with the midpoint of push pipe pipeline, it is ensured that jacking construction path is correct, prevents
Push pipe shifts in inlet pipe, improves the accuracy of jacking construction；
(2) work progress of the invention is simple, it is not necessary to excessive labour, it is to avoid sub-surface earth resource is inclined because of push pipe
Move and produce Secondary Disturbance, the saving of protection and cost for environment has good facilitation effect；
(3) engineering method of the invention in work progress to surrounding environment and the influence very little of resident, it is to avoid construction site
Dirty and messy phenomenon, work progress specification, and construction monitoring process is strict, accuracy is high.
Brief description of the drawings
Fig. 1 is construction flow chart of the invention.
Specific embodiment
The present invention is described in further detail with reference to embodiment, but embodiments of the present invention not limited to this,
Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, various replacing is made
Change and change, all should be included within the scope of the invention.
Embodiment：
The present embodiment determines straight line, three on cut-off line on push pipe sight alignment construction with two pipe wells
Individual spot projection is in push pipe well, and the three-point shape of projection is in alignment, it is ensured that jacking construction path is correct, comprises the following steps：
(1) preparation of construction and instrument configuration are carried out first, and the instrument includes：For determining subpoint on push pipe well
Total powerstation；For projection line to be guided to the laser marker in push pipe pipeline；Steel tape for determining push pipe well midpoint；For
The ink fountain made marks on push pipe well；For three spot projections will being chosen on connecting line to the ceiling hammer in push pipe well；Quite
In connecting line, for the white clear plastic cord of two subpoints of connecting jacking pipe borehole wall both sides；
(2) and then the excavation and all skirts of push pipe well are carried out cover construction；
(3) after push pipe well digs, respectively determine that one is used to determine push pipe jacking direction at push pipe well Liang Gecebi centers
Point, and two points are drawn a straight line with white clear plastic cord；
(4) three spot projections are taken on connecting line in push pipe well, by projection after three points connect to form projection line；
(5) laser marker is set up in push pipe well, projection line is guided in push pipe pipeline；
(6) the jacking construction operation of push pipe pipeline is carried out.
Preparation of construction and instrument configuration are carried out first, and wherein preparation of construction includes：
A) explanation of compilation and foundation：Relevant law, regulation, regulatory documents, standard, specification and drawing (national standard drawings),
Design of Construction Organization etc..
B) push pipe sight alignment construction characteristic, pipe well floor plan and push pipe path position figure, construction requirement and technology
Guaranteed conditions, the size and thickness of specific, concrete push pipe, duct bottom absolute altitude, the model of jack, situations such as report is surveyed on ground etc..
C) construction plan：Construction schedule, material and facilities plan etc..
D) construction technology technology：Push pipe sight alignment construction method, technological requirement, the mechanical performance index of material, construction
Setting and inspection, acceptance requirement etc..
E) construction safety safeguard measure：Push pipe sight alignment construction manager organization, technology measure, construction
Emergency plan HSE.
F) Workforce Planning：Including full-time production safety management personnel, the configuration of special operation workers etc..
Wherein, pipe jacking construction method it is selected should according to the landform along construction, engineering and hydrogeology, traffic,
Above-ground structures, underground utilities and whether there is the actual conditions such as underground obstacle and after the requirement to earth's surface Deformation control considers
Make selected, it is necessary to ensure that safety, it is ensured that quality, it is economic and practical, save the area.The sequence of construction of push pipe should be from whole draining system
General examination for students from various schools consider, typically preferably since downstream, enter the start of line driving section push pipe when, should select execution conditions preferably, technical risk compared with
Few, journey shorter location in top is carried out, while make the test and analysis work of necessary site technology data, to understand underground reality
Border soil property, adapts to construction environment, grasps pipe jacking equipment transfer regularity, rationalization operating personnel, by the top of starting driving section
Enter brief summary, further the every construction technical data of adjustment, optimizes next step jacking pipe construction process.All pipe jacking equipments have to pass through
Maintenance, through job site can be transported into after the assay was approved.Unit and whole machine connection must be carried out when working pit is installed entering
Dynamic debugging, must implement regular servicing system in jacking.Should be built by construction quality, safety, civilized construction, protection ground is ensured
Build thing and underground utilities, maintain road traffic etc. to require, according to different engineering geological, hydrogeology and construction environment and condition conjunction
Reason selection push pipe head.Labor organization situation required for the present embodiment is as shown in table 1,
The labor organization situation table (unit of table 1：Work day/100 ㎡)
| Sequence number | Operation title | Skilled worker's number | General workman's number |
| 1 | Unwrapping wire is cut the earth | 2 | / |
| 2 | Work well | 1 | 4 |
| 3 | Push pipe is positioned | 2 | 1 |
| 4 | Jacking construction | 2 | 4 |
The The concrete specification and the key technical indexes of selected instrument are as shown in table 2,
The key instrument table of table 2
The construction that all skirts are covered in the step (2) includes：Construction enclose cover set up construction warning sign and traffic guide board,
Sound insulation canopy, job site are set up on construction ground carries out hard place.Wherein this engineering construction pipeline both sides and active well, inspection shaft
Construction is covered in position using complete enclosing, and the construction temporary facility of setting such as site office, life in the building site in, produces and set etc. and should be opened with facing
Hang distinguishing mark, it is ensured that bright clean and tidy, construction is enclosed to cover and sets up construction warning sign and traffic guide board, and night hangs warning lamp, and
Ensure there are enough lighting installations at night along construction；Construction period, will according to supervising engineer, owner or local government
Ask, in desired when and where, there is provided and maintain all of houselights, backplate, enclose cover, fence, alarm signal mark and
Operator on duty, is protected and to engineering for the public provides safety and convenience；Construction period takes effective measures single along guarantee
Position, the discrepancy of resident and road it is unimpeded carry out original crossing scope pavement construction when, interim sidewalk is first set, to ensure
Entrance and road it is unimpeded and safe；Strengthen the safety devices at construction crossing, configure eye-catching road safety warning label, it is ensured that
Road construction safety.
For the control of noise：Sound insulation canopy is set up to stand-by generator and log splitter, generator and log splitter are reduced as far as possible
The noise pollution for occurring in use；Night does not carry out construction operation, because of engineering technology, quality the need for, during work
Between when needing to be extended down to night, could extend the activity duration after reporting administrative department for construction and the approval of management department；Do not make at night
With the big construction machinery of noise.
For the control for preventing air pollution (dust-proof)：Reasonable arrangement operation side and arrangement temporary facility.It is to apply
Influence of the work to surrounding environment is minimized, and aggregate chips stabilized zone uses blending station central mix, and concrete uses Commercial Concrete.Dumper is used
Canvas and lid set and other items are covered, it is easy to cause the fines heap of dust, are given and suitably cover or sprinkle water；Carry out hard place in job site
Change, it is steady that 15cm solid cements are repaiied on the ground such as building site gate internal and external channel, temporary facility flooring, placing of material place, processing space
Given layer, surrounding sets good discharge conduit；All construction machineries carry out service work；Special messenger is arranged to be responsible for spilling for construction road
Water conservancy project is made, it is ensured that place moistens, and reduces dust pollution；Above measure is responsible for passing through block and is implemented by project manager, checks small by unit
The responsible inspection of group.In step (3) push pipe borehole wall both sides central point by by total powerstation frame on a midpoint for push pipe well, camera lens
The midpoint of another push pipe well is sighted to determine.Push pipe borehole wall central point is determined using total powerstation, compared to existing artificial mark
The advantage of chi measurement is can both to be positioned exactly by light, and error is relatively much smaller, is convenient for measuring again, because this
Body push pipe well just belongs to the dell excavated, and using scale it is difficult to hold the boundary at push pipe well edge, is all used two sides
If scale is measured, error can be all produced equivalent to both sides so that error further expands, and total powerstation is fixed using optics
Position, it is substantially accurately more than artificial tape measure using light, have well for preventing push pipe from being shifted in inlet pipe
Evade effect；
Three spot projections that will be taken on connecting line in step (4) include to the step in push pipe well：
(4.1) the messenger wire one end on ceiling hammer is fixed on the point selected by connecting line, lowering ceiling hammer；
(4.2) after after ceiling hammer stabilization, in the push pipe well ceiling hammer tup just to position on be marked with ink fountain.
Laser marker guides to when in push pipe pipeline projection line in step (5), ten be projected out with laser marker
The vertical line of wordline coincides with projection line, and x wire overlaps with the left and right quadrantal points of push pipe, midpoint and the push pipe pipe of cross hairs
The midpoint in road overlaps.The central point during cross hairs that laser marker is projected out, as push pipe inlet pipe, the vertical line of cross hairs and
Projection line overlaps, direction of advance when projection line is push pipe inlet pipe, and the direction mark for being optically intended to inlet pipe arrives push pipe
In pipeline, can well ensure that pipeline is in the right direction in inlet pipe, substantially increase the accuracy of construction, it is to avoid secondary to do over again；
Needing the parameter of monitoring in step (6) during the jacking construction operation of push pipe pipeline includes：Pipe jacking tunnelling machine release hole 0.8~
The unearthed rate of pressure value, jack-in process in the soil layer of 1.0m, side-play amount, the surface subsidence of pipeline jack-in process central axis
Value.
Determine the pressure value in actual soil layer：Pipe jacking tunnelling machine blow slowly release 0.8~1.0m of hole soil layer after stop top
Enter, after waiting 20h quietly, the value on observation pipe jacking tunnelling machine earth pressure table, if this duration is not inconsistent with calculated value, with practical measurement
Value is defined, and the original propelling pressure controlling value for calculating and gross thrust value are adjusted correspondingly.
Spout direction controlling on pipeline top when appearing：Two section pipe of concretes after head use with driving head and are rigidly connected to carry
Linearity during jacking high.
Jacking control parameter
1. it is unearthed and controls：Unearthed rate controlling value 95%~98%, adjusts in time according to actual conditions during jacking, with jacking oil
The extension elongation of cylinder is unearthed to measure, i.e. jacking oil cylinder stretches out 75mm, and be unearthed about 0.48m3.
2. axial line control：A central axis is surveyed when pipeline is per 250~300mm of jacking, if entering once discovery movement tendency
Row correction, as side-play amount >=20mm, stops jacking at once, and ascertain the reason jacking again after having measure to ensure, it is ensured that push pipe axis
It is correct, duty survey duty entangle.
3. soil pressure force value control：It is ± the 20kPa of Measured Soil pressure value.
4. settlement Control：Soil pressure controlling value, the amount of being unearthed are adjusted in time according to surface subsidence supervision feedback information to be spouted with top
Speed, if finding, sedimentation value is exceeded, top is stopped immediately and is spouted, and ascertains the reason, and taking after corresponding measure could jacking again, it is ensured that ground
Underground pipelines with above ground structure safely know by nothing
The present invention makes full use of original structure condition, and straight line is determined with two pipe wells, and three points are thrown on cut-off line
Shadow is in push pipe well, and the three-point shape of projection is in alignment, and vertical line and the projection of cross hairs are projected out with laser marker
Line coincides, and x wire overlaps with the left and right quadrantal points of push pipe, and the midpoint of cross hairs overlaps with the midpoint of push pipe pipeline, it is ensured that top
Pipe construction path is correct, prevents push pipe from being shifted in inlet pipe, improves the accuracy of jacking construction.
The above, is only presently preferred embodiments of the present invention, not does any formal limitation to the present invention, it is every according to
Any simple modification, the equivalent variations made to above example according to technical spirit of the invention, each fall within protection of the invention
Within the scope of.
Claims (6)
1. push pipe sight alignment construction, straight line is determined with two pipe wells, and three spot projections are to push pipe on cut-off line
In well, the three-point shape of projection is in alignment, it is ensured that jacking construction path is correct, it is characterised in that comprise the following steps：
（1）Preparation of construction and instrument configuration are carried out first, and the instrument includes：Whole station for determining subpoint on push pipe well
Instrument；For projection line to be guided to the laser marker in push pipe pipeline；Steel tape for determining push pipe well midpoint；For on top
The ink fountain made marks on pipe well；For three spot projections will being chosen on connecting line to the ceiling hammer in push pipe well；Equivalent to even
Wiring, for the white clear plastic cord of two subpoints of connecting jacking pipe borehole wall both sides；
（2）Then the excavation and all skirts for carrying out push pipe well cover construction；
（3）After push pipe well digs, a point for being used to determine push pipe jacking direction is respectively determined at push pipe well Liang Gecebi centers, and
Two points are drawn a straight line with white clear plastic cord；
（4）Three spot projections are taken on connecting line in push pipe well, by projection after three points connect to form projection line；
（5）Laser marker is set up in push pipe well, projection line is guided in push pipe pipeline；
（6）Carry out the jacking construction operation of push pipe pipeline.
2. push pipe sight alignment construction according to claim 1, it is characterised in that：The step（2）Middle all skirts
The construction covered includes：Carry out hard place, building site gate internal and external channel, temporary facility flooring, placing of material in job site
15cm solid cement stabilized zones are repaiied on the ground such as ground, processing space, and surrounding sets good discharge conduit.
3. push pipe sight alignment construction according to claim 1 and 2, it is characterised in that：The step（3）Middle push pipe
Borehole wall both sides central point is by the way that by total powerstation frame, on a midpoint for push pipe well, the midpoint that camera lens sights another push pipe well is come
It is determined that.
4. push pipe sight alignment construction according to claim 1 and 2, it is characterised in that：The step（4）It is middle to connect
Three spot projections taken in wiring include to the step in push pipe well：
（4.1）Messenger wire one end on ceiling hammer is fixed on the point selected by connecting line, lowering ceiling hammer；
（4.2）After after ceiling hammer stabilization, in the push pipe well ceiling hammer tup just to position on be marked with ink fountain.
5. push pipe sight alignment construction according to claim 1 and 2, it is characterised in that：The step（5）Middle laser
Marker is guided to the vertical line and projection line phase of cross hairs when in push pipe pipeline, being projected out with laser marker by projection line
Overlap, x wire overlaps with the left and right quadrantal points of push pipe, and the midpoint of cross hairs overlaps with the midpoint of push pipe pipeline.
6. push pipe sight alignment construction according to claim 1 and 2, it is characterised in that：The step（6）Middle push pipe
The parameter of monitoring is needed during the jacking construction operation of pipeline to be included：Pipe jacking tunnelling machine is released in the soil layer of 0.8~1.0m of hole
Side-play amount, the ground settlement value of central axis in pressure value, the unearthed rate of jack-in process, pipeline jack-in process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710013486.6A CN106764055B (en) | 2017-01-09 | 2017-01-09 | Push pipe sight alignment construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710013486.6A CN106764055B (en) | 2017-01-09 | 2017-01-09 | Push pipe sight alignment construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106764055A true CN106764055A (en) | 2017-05-31 |
| CN106764055B CN106764055B (en) | 2019-02-01 |
Family
ID=58951243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710013486.6A Active CN106764055B (en) | 2017-01-09 | 2017-01-09 | Push pipe sight alignment construction |
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