CN107449368A - A kind of buried pipeline deformation pattern detection method - Google Patents
A kind of buried pipeline deformation pattern detection method Download PDFInfo
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- CN107449368A CN107449368A CN201710708305.1A CN201710708305A CN107449368A CN 107449368 A CN107449368 A CN 107449368A CN 201710708305 A CN201710708305 A CN 201710708305A CN 107449368 A CN107449368 A CN 107449368A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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Abstract
A kind of buried pipeline deformation pattern detection method, is related to buried pipeline detection technique field.It, which includes bringing test point coordinate into oval normal equation, is fitted to obtain the first fit equation.Test point is divided into the first test point group and the second test point group along the transverse axis of oval normal equation is corresponding.Bring the first test point group into oval normal equation and be fitted to obtain the second fit equation.Bring the second test point group into oval normal equation and be fitted to obtain the 3rd fit equation, control the second fit equation and the 3rd fit equation CMP and common transverse axis.|D‑2b|>| D (b1+b2) |, compared with b with D and a1, obtain buried pipeline deformation pattern.|D‑2b|<| D (b1+b2) |, compared with b1 and b2 with D and a2, to determine buried pipeline deformation pattern.This method can reflect the real work condition of pipeline configuration comprehensively, and foundation is provided for pipeline configuration security evaluation.
Description
Technical field
The present invention relates to buried pipeline detection technique field, is detected in particular to a kind of buried pipeline deformation pattern
Method.
Background technology
Buried pipeline, the basis of particularly flexible buried pipeline normal work is pipeclay collective effect.The earthen backfill of pipe side is not
Closely knit, loss or loosening, deformation can all cause pipeline local stress to increase, threat tube safety.Due to the effect of deadweight, pipe
Soil typically contacts more close with pipe outer wall near top, but below pipeline center's elevation, the compactness of the outer soil body of pipe is often inadequate,
This is the major reason for causing tube top vertical deformation to increase.At present, for the judgement of heavy caliber buried flexible conduit structure safety
Tube top vertical deformation data are depended on, clear stipulaties have been carried out to this in relevant industries technical specification.But only rely on this
One index can not reflect the real work condition of pipeline configuration, it is therefore desirable to carry out comprehensive test to pipeline, determine pipeline
Deformation pattern, provide foundation for pipeline configuration security evaluation.
The content of the invention
It is an object of the invention to provide a kind of buried pipeline deformation pattern detection method, and it can reflect more fully hereinafter
The real work condition and deformation pattern of pipeline configuration, it is easy to determine the deformation pattern of pipeline, is carried for pipeline configuration security evaluation
For foundation.
What embodiments of the invention were realized in：
A kind of buried pipeline deformation pattern detection method, it includes：The buried pipeline that will be measured by laser profile scanning instrument
The coordinate of test point bring oval normal equation into and carry out data and be fitted to obtain the first fit equation.Test point is multiple, Duo Gejian
Measuring point is along the circumferentially distributed of buried pipeline and is respectively positioned on the approximately the same plane of the axial line perpendicular to buried pipeline.Oval standard side
The transverse axis of journey corresponds to the horizontal direction of buried pipeline, and the longitudinal axis of oval normal equation corresponds to the vertical direction of buried pipeline.Along ellipse
The transverse axis of circle normal equation is corresponding to be divided into the first test point group and the second test point group by test point.By the first test point group band
Enter oval normal equation progress data and be fitted to obtain the second fit equation.Bring the second test point group into oval normal equation and enter line number
According to being fitted to obtain the 3rd fit equation, and control the second fit equation and the 3rd fit equation CMP and common transverse axis.
The length of the longitudinal axis of first fit equation is 2b, and the length of the longitudinal axis of the second fit equation is 2b1, the 3rd fitting side
The length of the longitudinal axis of journey is 2b2, and the internal diameter that dispatches from the factory of buried pipeline is D, and the length of the transverse axis of the first fit equation is 2a1, second
The length of the transverse axis of both fit equation and the 3rd fit equation is 2a2.If | D-2b |>| D- (b1+b2) |, with b with D and
A1 compares, and obtains the deformation pattern of buried pipeline.If | D-2b |<| D- (b1+b2) |, compared with b1 and b2 with D and a2, obtained buried
The deformation pattern of pipeline.
The beneficial effect of the embodiment of the present invention is：
Buried pipeline deformation pattern detection method provided in an embodiment of the present invention utilizes the first fit equation, the second fitting side
The transverse axis and the longitudinal axis of journey and the 3rd fit equation are compared with the internal diameter that dispatches from the factory of buried pipeline, to from which further follow that underground pipe
The deformation pattern in road.By the design, it can more accurately reflect the real work condition and deformation pattern of pipeline configuration, just
In it is determined that the deformation pattern of pipeline, foundation is provided for pipeline configuration security evaluation.
In addition, the first fit equation, the second fit equation and the 3rd fit equation are the coordinate and ellipse by test point
Normal equation progress data plan is chummy, and the compressive deformation pattern for the buried pipeline being finally reflected more accurately and reliably, can
More truly reflect the practical distortion pattern of buried pipeline, be easy to subsequently carry out further the deformation pattern of buried pipeline
Detection and judgement.It can more accurately, comprehensively reflect the real work condition and deformation pattern of pipeline configuration, be easy to determine
The deformation pattern of pipeline, foundation is provided for pipeline configuration security evaluation.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the Fitting Analysis result of the first fit equation of buried pipeline provided in an embodiment of the present invention；
Fig. 2 is the second fit equation of buried pipeline provided in an embodiment of the present invention and the Fitting Analysis of the 3rd fit equation
As a result.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, it is the conventional production that can be obtained by commercially available purchase
Product.
A kind of buried pipeline deformation pattern detection method provided below embodiments of the invention is specifically described.
Buried pipeline deformation pattern detection method provided in an embodiment of the present invention includes：
Bring the coordinate of the test point of the buried pipeline measured by laser profile scanning instrument into oval normal equation and enter line number
According to being fitted to obtain the first fit equation.Wherein, test point is multiple that multiple test points are along the circumferentially distributed of buried pipeline and are respectively positioned on
Perpendicular to the approximately the same plane of the axial line of buried pipeline.The transverse axis of oval normal equation corresponds to the horizontal direction of buried pipeline,
The longitudinal axis of oval normal equation corresponds to the vertical direction of buried pipeline.
Test point is divided into the first test point group and the second test point group along the transverse axis of oval normal equation is corresponding.By
One test point group brings oval normal equation progress data into and is fitted to obtain the second fit equation.Bring the second test point group into oval mark
Quasi- equation carries out data and is fitted to obtain the 3rd fit equation, and controls the second fit equation and the 3rd fit equation CMP and be total to
Transverse axis.
The length of the longitudinal axis of first fit equation is 2b, and the length of the longitudinal axis of the second fit equation is 2b1, the 3rd fitting side
The length of the longitudinal axis of journey is 2b2, and the internal diameter that dispatches from the factory of buried pipeline is D, and the length of the transverse axis of the first fit equation is 2a1, second
The length of the transverse axis of both fit equation and the 3rd fit equation is 2a2.
If | D-2b |>| D- (b1+b2) |, compared with b with D and a1, obtain the deformation pattern of buried pipeline.If | D-2b |<|
D- (b1+b2) |, compared with b1 and b2 with D and a2, obtain the deformation pattern of buried pipeline.
Buried pipeline deformation pattern detection method utilizes the first fit equation, the second fit equation and the 3rd fit equation
Transverse axis and the longitudinal axis are compared with the internal diameter that dispatches from the factory of buried pipeline, to from which further follow that the deformation pattern of buried pipeline.Pass through
It the design, can more accurately reflect the real work condition and deformation pattern of pipeline configuration, be easy to determine the deformation of pipeline
Pattern, foundation is provided for pipeline configuration security evaluation.
In addition, the first fit equation, the second fit equation and the 3rd fit equation are the coordinate and ellipse by test point
Normal equation progress data plan is chummy, and the compressive deformation pattern for the buried pipeline being finally reflected more accurately and reliably, can
More truly reflect the practical distortion pattern of buried pipeline, be easy to subsequently carry out further the deformation pattern of buried pipeline
Detection and judgement.It can more accurately, comprehensively reflect the real work condition and deformation pattern of pipeline configuration, be easy to determine
The deformation pattern of pipeline, foundation is provided for pipeline configuration security evaluation.
What the transverse axis length of the first fit equation, the second fit equation and the 3rd fit equation three all reflected is buried pipeline
Internal diameter in the horizontal direction, the longitudinal axis of the first fit equation, the second fit equation and the 3rd fit equation three grow what is all reflected
It is the internal diameter of buried pipeline vertically.
Further, as | D-2b |>| D- (b1+b2) | when.
If 2b<D<2a1, then buried pipeline is conventional normal deformation.
If 2b<2a1<D, then buried pipeline is conventional normal deformation, and is deformed relevant by repairing with buried pipeline.
If D<2b<2a1, then buried pipeline is conventional normal deformation, and deformation and the accuracy of manufacture of dispatching from the factory of buried pipeline have
Close.
If 2a1<D<2b, then the deformation degree of extrusion of the both sides in the horizontal direction of buried pipeline is than conventional normal deformation more
Greatly.
If 2a1<2b<D, then the deformation degree of extrusion of the both sides in the horizontal direction of buried pipeline is than conventional normal deformation more
Greatly, and deformation is relevant by repairing with buried pipeline.
If D<2a1<2b, then the deformation degree of extrusion of the both sides in the horizontal direction of buried pipeline is than conventional normal deformation more
Greatly, and deformation is relevant with the accuracy of manufacture of dispatching from the factory of buried pipeline.
Further, as | D-2b |<| D- (b1+b2) | when.
If 2b2<2b1<D<2a2, then the deformation extent of the latter half vertically of buried pipeline is more normal than conventional
Deformation is bigger.
If 2b2<2b1<2a2<D, then the deformation extent of the latter half vertically of buried pipeline is more normal than conventional
Deformation is bigger, and deforms relevant by repairing with buried pipeline.
If D<2b2<2b1<2a2 or 2b2<D<2b1<2a2, the then the latter half vertically of buried pipeline deformation
Degree is bigger than conventional normal deformation, and deforms relevant with the accuracy of manufacture of dispatching from the factory of buried pipeline.
If 2a2<D<2b2<2b1、2a2<2b2<D<2b1、2b2<D<2a2<2b1 or 2b2<2a2<D<2b1, then buried pipeline
The deformation degree of extrusion of both sides in the horizontal direction and the deformation extent of the latter half vertically are than conventional normal change
Shape is bigger.
If 2a2<2b2<2b1<D or 2b2<2a2<2b1<D, the then both sides of buried pipeline in the horizontal direction crimp journey
Degree and the deformation extent of the latter half vertically are bigger than conventional normal deformation, and deform with buried pipeline by repairing
Mend relevant.
If D<2a2<2b2<2b1 or D<2b2<2a2<2b1, the then both sides of buried pipeline in the horizontal direction crimp journey
Degree and the deformation extent of the latter half vertically be bigger than conventional normal deformation, and deforms and dispatched from the factory with buried pipeline
The accuracy of manufacture is relevant.
Further, using oval normal equation carry out being more convenient for drawing after data fitting the first fit equation transverse axis and
The length of the longitudinal axis, it is easy to draw the deformation value of buried pipeline.One can be entered by carrying out data fitting using oval normal equation
Step reduces the enforcement difficulty of buried pipeline deformation extent detection method.
It should be noted that data fitting can also be carried out using the elliptic equation in addition to oval normal equation, but simultaneously
The accuracy of result is not interfered with.
The uncompacted influence of backfill is there may be in view of the pipe side soil of buried pipeline, is detected using elliptic equation to first
Point group and the second test point group are fitted analysis respectively, can further improve the deformation extent and deflection finally obtained
The accuracy of numerical value.
Further, the first test point group is located at the top of transverse axis, and the second test point group is located at the lower section of transverse axis.First by
One test point group brings elliptic equation progress data into and is fitted to obtain the second fit equation, by the central point and transverse axis of the second fit equation
As the central point and major axis of the 3rd fit equation, then bring the second test point group into elliptic equation progress data fitting and draw
3rd fit equation.
Take length sum the going out with buried pipeline of half vertical pivot of the second fit equation and half vertical pivot of the 3rd fit equation
The difference of factory's diameter, to obtain the second deformation extent feature of buried pipeline, the i.e. corresponding deformation vertically of buried pipeline
Numerical quantity.
Further, the length of the longitudinal axis of first fit equation is 2b, the length of the longitudinal axis of second fit equation
To spend for 2b1, the length of the longitudinal axis of the 3rd fit equation is 2b2, and the internal diameter that dispatches from the factory of the buried pipeline is D, described first
The length of the transverse axis of fit equation is 2a1, the length of the transverse axis of both second fit equation and the 3rd fit equation
It is 2a2.
Take one that the absolute value of the middle deformation value of both the first deformation extent feature and the second deformation extent feature is larger
Person characterizes the deformation extent feature of buried pipeline.I.e.：If | D-2b |>| D- (b1+b2) |, compared with b with D and a1, obtain institute
State the deformation pattern of buried pipeline；If | D-2b |<| D- (b1+b2) |, compared with b1 and b2 with D and a2, obtain the underground pipe
The deformation pattern in road.
Buried pipeline deformation pattern detection method provided in an embodiment of the present invention can reflect pipeline configuration more fully hereinafter
Real work condition and deformation pattern, be easy to determine pipeline deformation pattern, provide foundation for pipeline configuration security evaluation.
The flow of above-mentioned buried pipeline deformation pattern detection method is illustrated below in conjunction with specific embodiment.
Embodiment
The present embodiment provides a kind of buried pipeline deformation pattern detection method, including：
1. the n detection positioned at inwall of buried pipeline is collected using laser profile scanning instrument in the tube chamber of buried pipeline
The coordinate of point.The coordinate of each test point is：
Wherein, xiFor the abscissa of i-th of test point；ziFor the ordinate of i-th of test point；diArrived for i-th of test point
The distance of pivot；θiFor i-th of test point using pivot as origin and by the horizontally disposed anglec of rotation of transverse axis
Degree；I and n is positive integer and i is less than or equal to n.
2. bring the coordinate of each test point into oval normal equation Ax2+Bz2+ Cx+Dz+E=0 carries out data and is fitted to obtain
First fit equation.The a length of 2a1 of transverse axis of first fit equation, a length of 2b of the longitudinal axis.And the i.e. corresponding buried pipelines of a length of 2a1 of transverse axis
Internal diameter in the horizontal direction, the long 2b of the longitudinal axis are the internal diameter of corresponding buried pipeline vertically.Then, the vertical side in buried pipeline edge
To deformation value w1=D-2b, wherein, w1 be buried pipeline deformation value, D be buried pipeline the internal diameter that dispatches from the factory.
3. test point is divided into the first test point group and the second test point group along the transverse axis of the first fit equation is corresponding, the
One test point group is located at the top of transverse axis, and the second test point group is located at the lower section of transverse axis.Bring the first test point group into oval mark
Quasi- equation Ax2+Bz2+ Cx+Dz+E=0 carries out data and is fitted to obtain the second fit equation, by the central point of the second fit equation and
Central point and transverse axis when transverse axis is fitted as the second test point group, then bring the second test point group into oval normal equation
Ax2+Bz2+ Cx+Dz+E=0 carries out data and is fitted to obtain the 3rd fit equation.The length of the longitudinal axis of first fit equation is 2b, the
The length of the longitudinal axis of two fit equations is 2b1, and the length of the longitudinal axis of the 3rd fit equation is 2b2, the internal diameter that dispatches from the factory of buried pipeline
For D, the length of the transverse axis of the first fit equation is 2a1, the length of the transverse axis of both the second fit equation and the 3rd fit equation
It is 2a2.As depicted in figs. 1 and 2.
If 4. | D-2b |>| D- (b1+b2) |, compared with b with D and a1, obtain the deformation pattern of buried pipeline.If | D-2b |
<| D- (b1+b2) |, compared with b1 and b2 with D and a2, obtain the deformation pattern of buried pipeline.Specific comparative result with it is foregoing interior
Hold identical, here is omitted.
In summary, buried pipeline deformation pattern detection method provided in an embodiment of the present invention can reflect more fully hereinafter
The real work condition and deformation pattern of pipeline configuration, it is easy to determine the deformation pattern of pipeline, is carried for pipeline configuration security evaluation
For foundation.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. buried pipeline deformation pattern detection method, it is characterised in that including：Bring the coordinate of the test point of the buried pipeline measured by laser profile scanning instrument into oval normal equation and enter line number According to being fitted to obtain the first fit equation；The test point is multiple, and multiple test points are along the circumferentially distributed of the buried pipeline And it is respectively positioned on the approximately the same plane of the axial line perpendicular to the buried pipeline；Described in the transverse axis of the oval normal equation is corresponding The horizontal direction of buried pipeline, the longitudinal axis of the oval normal equation correspond to the vertical direction of the buried pipeline；The test point is divided into the first test point group and the second test point group along the transverse axis of the oval normal equation is corresponding； Bring the first test point group into the oval normal equation progress data and be fitted to obtain the second fit equation；Described second is examined Measuring point group, which brings the oval normal equation into and carries out data, is fitted to obtain the 3rd fit equation, and control second fit equation and The 3rd fit equation CMP and common transverse axis；The length of the longitudinal axis of first fit equation is 2b, and the length of the longitudinal axis of second fit equation is 2b1, described The length of the longitudinal axis of three fit equations is 2b2, and the internal diameter that dispatches from the factory of the buried pipeline is D, the transverse axis of first fit equation Length be 2a1, the length of the transverse axis of both second fit equation and the 3rd fit equation is 2a2；If | D-2b |>| D- (b1+b2) |, compared with b with D and a1, obtain the deformation pattern of the buried pipeline；If | D-2b |<| D- (b1+b2) |, compared with b1 and b2 with D and a2, obtain the deformation pattern of the buried pipeline.
- 2. buried pipeline deformation pattern detection method according to claim 1, it is characterised in that | D-2b |>|D-(b1+ b2)|；If 2b<D<2a1, then the buried pipeline is conventional normal deformation；If 2b<2a1<D, then the buried pipeline is conventional normal deformation, and is deformed relevant by repairing with the buried pipeline；If D<2b<2a1, then the buried pipeline is conventional normal deformation, and deforms the manufacture essence of dispatching from the factory with the buried pipeline Spend relevant.
- 3. buried pipeline deformation pattern detection method according to claim 1, it is characterised in that | D-2b |>|D-(b1+ b2)|；If 2a1<D<2b, then the deformation degree of extrusion of the both sides in the horizontal direction of the buried pipeline is than conventional normal deformation more Greatly；If 2a1<2b<D, then the deformation degree of extrusion of the both sides in the horizontal direction of the buried pipeline is than conventional normal deformation more Greatly, and deformation is relevant by repairing with the buried pipeline；If D<2a1<2b, then the deformation degree of extrusion of the both sides in the horizontal direction of the buried pipeline is than conventional normal deformation more Greatly, and deformation is relevant with the accuracy of manufacture of dispatching from the factory of the buried pipeline.
- 4. buried pipeline deformation pattern detection method according to claim 1, it is characterised in that | D-2b |<|D-(b1+ b2)|；If 2b2<2b1<D<2a2, then the deformation extent of the latter half vertically of the buried pipeline is more normal than conventional Deformation is bigger；If 2b2<2b1<2a2<D, then the deformation extent of the latter half vertically of the buried pipeline is more normal than conventional Deformation is bigger, and deforms relevant by repairing with the buried pipeline.
- 5. buried pipeline deformation pattern detection method according to claim 1, it is characterised in that | D-2b |<|D-(b1+ b2)|；If D<2b2<2b1<2a2 or 2b2<D<2b1<2a2, the then the latter half vertically of the buried pipeline deformation Degree is bigger than conventional normal deformation, and deforms relevant with the accuracy of manufacture of dispatching from the factory of the buried pipeline.
- 6. buried pipeline deformation pattern detection method according to claim 1, it is characterised in that | D-2b |<|D-(b1+ b2)|；If 2a2<D<2b2<2b1、2a2<2b2<D<2b1、2b2<D<2a2<2b1 or 2b2<2a2<D<2b1, the then buried pipeline The deformation degree of extrusion of both sides in the horizontal direction and the deformation extent of the latter half vertically are than conventional normal change Shape is bigger.
- 7. buried pipeline deformation pattern detection method according to claim 1, it is characterised in that | D-2b |<|D-(b1+ b2)|；If 2a2<2b2<2b1<D or 2b2<2a2<2b1<D, the then both sides of the buried pipeline in the horizontal direction crimp journey Degree and the deformation extent of the latter half vertically are bigger than conventional normal deformation, and deform and passed through with the buried pipeline Cross repair it is relevant.
- 8. buried pipeline deformation pattern detection method according to claim 1, it is characterised in that | D-2b |<|D-(b1+ b2)|；If D<2a2<2b2<2b1 or D<2b2<2a2<2b1, the then both sides of the buried pipeline in the horizontal direction crimp journey Degree and the deformation extent of the latter half vertically are bigger than conventional normal deformation, and deform and the buried pipeline The accuracy of manufacture of dispatching from the factory is relevant.
- 9. buried pipeline deformation pattern detection method according to claim 1, it is characterised in that the first test point group Vertical height be higher than the second test point group.
- 10. buried pipeline deformation pattern detection method according to claim 9, it is characterised in that be fitted described second Central point and transverse axis of the central point and transverse axis of equation as the 3rd fit equation, then the second test point group is brought into The oval normal equation carries out data and is fitted to obtain the 3rd fit equation.
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| CN111102922A (en) * | 2019-12-30 | 2020-05-05 | 陕西泰诺特检测技术有限公司 | Pipeline geometric dimension detection device and method |
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| CN107449368B (en) | 2019-05-21 |
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