CN107449368A - A kind of buried pipeline deformation pattern detection method - Google Patents
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Abstract
一种埋地管道变形模式检测方法，涉及埋地管道检测技术领域。其包括将检测点坐标带入椭圆标准方程拟合得第一拟合方程。沿椭圆标准方程的横轴对应将检测点划分为第一检测点组和第二检测点组。将第一检测点组带入椭圆标准方程拟合得第二拟合方程。将第二检测点组带入椭圆标准方程拟合得第三拟合方程，控制第二拟合方程和第三拟合方程共中心点且共横轴。|D‑2b|>|D‑(b1+b2)|，用b同D以及a1比较，得埋地管道变形模式。|D‑2b|<|D‑(b1+b2)|，用b1和b2同D以及a2比较，以确定埋地管道变形模式。该方法能全面反映管道结构的实际工作性态，为管道结构安全评估提供依据。
A buried pipeline deformation mode detection method relates to the technical field of buried pipeline detection. It includes bringing the coordinates of the detection points into the standard equation of the ellipse to fit the first fitting equation. The detection points are divided into a first detection point group and a second detection point group correspondingly along the horizontal axis of the standard equation of the ellipse. The second fitting equation is obtained by bringing the first detection point group into the ellipse standard equation for fitting. Bring the second detection point group into the ellipse standard equation to fit the third fitting equation, and control the second fitting equation and the third fitting equation to have a common center point and a common horizontal axis. |D‑2b|>|D‑(b1+b2)|, compare b with D and a1, and get the deformation mode of the buried pipeline. |D‑2b|<|D‑(b1+b2)|, compare b1 and b2 with D and a2 to determine the deformation mode of the buried pipeline. This method can fully reflect the actual working behavior of the pipeline structure and provide a basis for the safety assessment of the pipeline structure.
Description
技术领域technical field
本发明涉及埋地管道检测技术领域，具体而言，涉及一种埋地管道变形模式检测方法。The invention relates to the technical field of detection of buried pipelines, in particular to a detection method for deformation modes of buried pipelines.
背景技术Background technique
埋地管道，特别是柔性埋地管道正常工作的基础是管土共同作用。管侧土回填不密实、流失或者松动、变形都会造成管道局部应力增大，威胁管道安全。由于自重的作用，管顶附近土与管外壁一般接触较为紧密，但管道中心高程以下，管外土体的密实度往往不够，这是造成管顶竖向变形增大的重要原因。目前，对于大口径埋地柔性管道结构安全的判定主要依赖于管顶竖向变形数据，相关行业技术规范中对此进行了明确规定。然而仅依靠这一项指标并不能反映管道结构的实际工作性态，因此需要对管道进行综合测评，确定管道的变形模式，为管道结构安全评估提供依据。The basis for the normal operation of buried pipelines, especially flexible buried pipelines, is the joint action of pipe and soil. If the backfilling of the pipe side soil is not compact, lost or loose, or deformed, the local stress of the pipe will increase, threatening the safety of the pipe. Due to the effect of self-weight, the soil near the pipe top is generally in close contact with the outer wall of the pipe, but below the center elevation of the pipe, the compactness of the soil outside the pipe is often insufficient, which is an important reason for the increase in the vertical deformation of the pipe top. At present, the judgment of the structural safety of large-diameter buried flexible pipelines mainly depends on the vertical deformation data of the pipe top, which is clearly stipulated in relevant industry technical specifications. However, relying on this index alone cannot reflect the actual working behavior of the pipeline structure. Therefore, it is necessary to conduct a comprehensive evaluation of the pipeline to determine the deformation mode of the pipeline and provide a basis for the safety assessment of the pipeline structure.
发明内容Contents of the invention
本发明的目的在于提供一种埋地管道变形模式检测方法，其能够更加全面地反映管道结构的实际工作性态和变形模式，便于确定管道的变形模式，为管道结构安全评估提供依据。The purpose of the present invention is to provide a deformation mode detection method for buried pipelines, which can more comprehensively reflect the actual working behavior and deformation mode of the pipeline structure, facilitate the determination of the deformation mode of the pipeline, and provide a basis for the safety assessment of the pipeline structure.
本发明的实施例是这样实现的：Embodiments of the present invention are achieved like this:
一种埋地管道变形模式检测方法，其包括：将由激光断面扫描仪测得的埋地管道的检测点的坐标带入椭圆标准方程进行数据拟合得第一拟合方程。检测点为多个，多个检测点沿埋地管道的周向分布且均位于垂直于埋地管道的轴心线的同一个平面。椭圆标准方程的横轴对应埋地管道的水平方向，椭圆标准方程的纵轴对应埋地管道的竖直方向。沿椭圆标准方程的横轴对应将检测点划分为第一检测点组和第二检测点组。将第一检测点组带入椭圆标准方程进行数据拟合得第二拟合方程。将第二检测点组带入椭圆标准方程进行数据拟合得第三拟合方程，并控制第二拟合方程和第三拟合方程共中心点且共横轴。A method for detecting a deformation mode of a buried pipeline, which includes: bringing the coordinates of the detection points of the buried pipeline measured by a laser section scanner into an ellipse standard equation to perform data fitting to obtain a first fitting equation. There are multiple detection points, and the multiple detection points are distributed along the circumference of the buried pipeline and are all located on the same plane perpendicular to the axis line of the buried pipeline. The horizontal axis of the ellipse standard equation corresponds to the horizontal direction of the buried pipeline, and the vertical axis of the ellipse standard equation corresponds to the vertical direction of the buried pipeline. The detection points are divided into a first detection point group and a second detection point group correspondingly along the horizontal axis of the standard equation of the ellipse. Bring the first detection point group into the ellipse standard equation for data fitting to obtain the second fitting equation. Bring the second detection point group into the ellipse standard equation for data fitting to obtain the third fitting equation, and control the second fitting equation and the third fitting equation to have a common center point and a common horizontal axis.
第一拟合方程的纵轴的长度为2b，第二拟合方程的纵轴的长度为2b1，第三拟合方程的纵轴的长度为2b2，埋地管道的出厂内径为D，第一拟合方程的横轴的长度为2a1，第二拟合方程和第三拟合方程二者的横轴的长度均为2a2。若|D-2b|>|D-(b1+b2)|，用b同D以及a1比较，得埋地管道的变形模式。若|D-2b|<|D-(b1+b2)|，用b1和b2同D以及a2比较，得埋地管道的变形模式。The length of the vertical axis of the first fitting equation is 2b, the length of the vertical axis of the second fitting equation is 2b1, the length of the vertical axis of the third fitting equation is 2b2, the factory inner diameter of the buried pipeline is D, the first The length of the horizontal axis of the fitting equation is 2a1, and the length of the horizontal axis of both the second fitting equation and the third fitting equation is 2a2. If |D-2b|>|D-(b1+b2)|, compare b with D and a1 to get the deformation mode of the buried pipeline. If |D-2b|<|D-(b1+b2)|, compare b1 and b2 with D and a2 to get the deformation mode of the buried pipeline.
本发明实施例的有益效果是：The beneficial effects of the embodiments of the present invention are:
本发明实施例提供的埋地管道变形模式检测方法利用第一拟合方程、第二拟合方程和第三拟合方程的横轴以及纵轴同埋地管道的出厂内径进行比较，以进一步得出埋地管道的变形模式。通过该设计，能够更加准确地反映管道结构的实际工作性态和变形模式，便于确定管道的变形模式，为管道结构安全评估提供依据。The method for detecting the deformation mode of the buried pipeline provided by the embodiment of the present invention uses the horizontal axis and the vertical axis of the first fitting equation, the second fitting equation and the third fitting equation to compare with the factory inner diameter of the buried pipeline to further obtain Deformation modes of buried pipelines. Through this design, the actual working behavior and deformation mode of the pipeline structure can be more accurately reflected, and the deformation mode of the pipeline can be easily determined, which provides a basis for the safety assessment of the pipeline structure.
此外，第一拟合方程、第二拟合方程和第三拟合方程均是由检测点的坐标与椭圆标准方程进行数据拟合得来的，最终反映的埋地管道的受压变形模式更加准确可靠，能够更加真实地反映埋地管道的实际变形模式，便于后续对埋地管道的变形模式进行进一步的检测和判断。能够更加准确地、全面地反映管道结构的实际工作性态和变形模式，便于确定管道的变形模式，为管道结构安全评估提供依据。In addition, the first fitting equation, the second fitting equation and the third fitting equation are all obtained by data fitting between the coordinates of the detection points and the ellipse standard equation, and the pressure deformation mode of the buried pipeline finally reflected is more accurate and reliable , which can more truly reflect the actual deformation mode of the buried pipeline, and facilitate subsequent detection and judgment of the deformation mode of the buried pipeline. It can more accurately and comprehensively reflect the actual working behavior and deformation mode of the pipeline structure, facilitate the determination of the deformation mode of the pipeline, and provide a basis for the safety assessment of the pipeline structure.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.
图1为本发明实施例提供的埋地管道的第一拟合方程的拟合分析结果；Fig. 1 is the fitting analysis result of the first fitting equation of the buried pipeline provided by the embodiment of the present invention;
图2为本发明实施例提供的埋地管道的第二拟合方程和第三拟合方程的拟合分析结果。Fig. 2 is the fitting analysis results of the second fitting equation and the third fitting equation of the buried pipeline provided by the embodiment of the present invention.
具体实施方式detailed description
为使本发明实施例的目的、技术方案和优点更加清楚，下面将对本发明实施例中的技术方案进行清楚、完整地描述。实施例中未注明具体条件者，按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者，均为可以通过市售购买获得的常规产品。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased from the market.
下面对本发明的实施例提供的一种埋地管道变形模式检测方法进行具体说明。A method for detecting a deformation mode of a buried pipeline provided by an embodiment of the present invention will be described in detail below.
本发明实施例提供的埋地管道变形模式检测方法包括：The buried pipeline deformation mode detection method provided by the embodiment of the present invention includes:
将由激光断面扫描仪测得的埋地管道的检测点的坐标带入椭圆标准方程进行数据拟合得第一拟合方程。其中，检测点为多个，多个检测点沿埋地管道的周向分布且均位于垂直于埋地管道的轴心线的同一个平面。椭圆标准方程的横轴对应埋地管道的水平方向，椭圆标准方程的纵轴对应埋地管道的竖直方向。The coordinates of the detection points of the buried pipeline measured by the laser section scanner are brought into the ellipse standard equation for data fitting to obtain the first fitting equation. Wherein, there are multiple detection points, and the multiple detection points are distributed along the circumference of the buried pipeline and are all located on the same plane perpendicular to the axis of the buried pipeline. The horizontal axis of the ellipse standard equation corresponds to the horizontal direction of the buried pipeline, and the vertical axis of the ellipse standard equation corresponds to the vertical direction of the buried pipeline.
沿椭圆标准方程的横轴对应将检测点划分为第一检测点组和第二检测点组。将第一检测点组带入椭圆标准方程进行数据拟合得第二拟合方程。将第二检测点组带入椭圆标准方程进行数据拟合得第三拟合方程，并控制第二拟合方程和第三拟合方程共中心点且共横轴。The detection points are divided into a first detection point group and a second detection point group correspondingly along the horizontal axis of the standard equation of the ellipse. Bring the first detection point group into the ellipse standard equation for data fitting to obtain the second fitting equation. Bring the second detection point group into the ellipse standard equation for data fitting to obtain the third fitting equation, and control the second fitting equation and the third fitting equation to have a common center point and a common horizontal axis.
第一拟合方程的纵轴的长度为2b，第二拟合方程的纵轴的长度为2b1，第三拟合方程的纵轴的长度为2b2，埋地管道的出厂内径为D，第一拟合方程的横轴的长度为2a1，第二拟合方程和第三拟合方程二者的横轴的长度均为2a2。The length of the vertical axis of the first fitting equation is 2b, the length of the vertical axis of the second fitting equation is 2b1, the length of the vertical axis of the third fitting equation is 2b2, the factory inner diameter of the buried pipeline is D, the first The length of the horizontal axis of the fitting equation is 2a1, and the length of the horizontal axis of both the second fitting equation and the third fitting equation is 2a2.
若|D-2b|>|D-(b1+b2)|，用b同D以及a1比较，得埋地管道的变形模式。若|D-2b|<|D-(b1+b2)|，用b1和b2同D以及a2比较，得埋地管道的变形模式。If |D-2b|>|D-(b1+b2)|, compare b with D and a1 to get the deformation mode of the buried pipeline. If |D-2b|<|D-(b1+b2)|, compare b1 and b2 with D and a2 to get the deformation mode of the buried pipeline.
埋地管道变形模式检测方法利用第一拟合方程、第二拟合方程和第三拟合方程的横轴以及纵轴同埋地管道的出厂内径进行比较，以进一步得出埋地管道的变形模式。通过该设计，能够更加准确地反映管道结构的实际工作性态和变形模式，便于确定管道的变形模式，为管道结构安全评估提供依据。The detection method of the buried pipeline deformation mode uses the first fitting equation, the second fitting equation and the third fitting equation to compare the horizontal axis and the vertical axis with the factory inner diameter of the buried pipeline to further obtain the deformation of the buried pipeline model. Through this design, the actual working behavior and deformation mode of the pipeline structure can be more accurately reflected, and the deformation mode of the pipeline can be easily determined, which provides a basis for the safety assessment of the pipeline structure.
此外，第一拟合方程、第二拟合方程和第三拟合方程均是由检测点的坐标与椭圆标准方程进行数据拟合得来的，最终反映的埋地管道的受压变形模式更加准确可靠，能够更加真实地反映埋地管道的实际变形模式，便于后续对埋地管道的变形模式进行进一步的检测和判断。能够更加准确地、全面地反映管道结构的实际工作性态和变形模式，便于确定管道的变形模式，为管道结构安全评估提供依据。In addition, the first fitting equation, the second fitting equation and the third fitting equation are all obtained by data fitting between the coordinates of the detection points and the ellipse standard equation, and the pressure deformation mode of the buried pipeline finally reflected is more accurate and reliable , which can more truly reflect the actual deformation mode of the buried pipeline, and facilitate subsequent detection and judgment of the deformation mode of the buried pipeline. It can more accurately and comprehensively reflect the actual working behavior and deformation mode of the pipeline structure, facilitate the determination of the deformation mode of the pipeline, and provide a basis for the safety assessment of the pipeline structure.
第一拟合方程、第二拟合方程和第三拟合方程三者的横轴长都反映的是埋地管道沿水平方向的内径，第一拟合方程、第二拟合方程和第三拟合方程三者的纵轴长都反映的是埋地管道沿竖直方向的内径。The horizontal axis lengths of the first fitting equation, the second fitting equation and the third fitting equation all reflect the inner diameter of the buried pipeline along the horizontal direction, and the first fitting equation, the second fitting equation and the third The lengths of the vertical axes of the three fitting equations all reflect the inner diameter of the buried pipeline along the vertical direction.
进一步地，当|D-2b|>|D-(b1+b2)|时。Further, when |D-2b|>|D-(b1+b2)|.
若2b<D<2a1，则埋地管道为常规正常变形。If 2b<D<2a1, the buried pipeline is conventionally deformed.
若2b<2a1<D，则埋地管道为常规正常变形，且变形与埋地管道经过修补有关。If 2b<2a1<D, the buried pipeline is conventionally deformed, and the deformation is related to the repair of the buried pipeline.
若D<2b<2a1，则埋地管道为常规正常变形，且变形与埋地管道的出厂制造精度有关。If D<2b<2a1, the buried pipeline is conventionally deformed, and the deformation is related to the factory manufacturing precision of the buried pipeline.
若2a1<D<2b，则埋地管道的沿水平方向的两侧的挤压变形程度比常规正常变形更大。If 2a1<D<2b, the degree of extrusion deformation on both sides of the buried pipeline along the horizontal direction is greater than the conventional normal deformation.
若2a1<2b<D，则埋地管道的沿水平方向的两侧的挤压变形程度比常规正常变形更大，且变形与埋地管道经过修补有关。If 2a1<2b<D, the degree of extrusion deformation on both sides of the buried pipeline along the horizontal direction is greater than the normal normal deformation, and the deformation is related to the repair of the buried pipeline.
若D<2a1<2b，则埋地管道的沿水平方向的两侧的挤压变形程度比常规正常变形更大，且变形与埋地管道的出厂制造精度有关。If D<2a1<2b, the degree of extrusion deformation on both sides of the buried pipeline along the horizontal direction is greater than the normal normal deformation, and the deformation is related to the factory manufacturing accuracy of the buried pipeline.
进一步地，当|D-2b|<|D-(b1+b2)|时。Further, when |D-2b|<|D-(b1+b2)|.
若2b2<2b1<D<2a2，则埋地管道的沿竖直方向的下半部分的变形程度比常规正常变形更大。If 2b2<2b1<D<2a2, the deformation degree of the lower half of the buried pipeline along the vertical direction is larger than the conventional normal deformation.
若2b2<2b1<2a2<D，则埋地管道的沿竖直方向的下半部分的变形程度比常规正常变形更大，且变形与埋地管道经过修补有关。If 2b2<2b1<2a2<D, the deformation degree of the lower half of the buried pipeline along the vertical direction is greater than the conventional normal deformation, and the deformation is related to the repair of the buried pipeline.
若D<2b2<2b1<2a2或2b2<D<2b1<2a2，则埋地管道的沿竖直方向的下半部分的变形程度比常规正常变形更大，且变形与埋地管道的出厂制造精度有关。If D<2b2<2b1<2a2 or 2b2<D<2b1<2a2, the deformation degree of the lower half of the buried pipeline along the vertical direction is larger than the conventional normal deformation, and the deformation is related to the factory manufacturing accuracy of the buried pipeline related.
若2a2<D<2b2<2b1、2a2<2b2<D<2b1、2b2<D<2a2<2b1或2b2<2a2<D<2b1，则埋地管道沿水平方向的两侧的挤压变形程度和沿竖直方向的下半部分的变形程度均比常规正常变形更大。If 2a2<D<2b2<2b1, 2a2<2b2<D<2b1, 2b2<D<2a2<2b1 or 2b2<2a2<D<2b1, the extrusion deformation degree and The degree of deformation in the lower half of the vertical direction is larger than the conventional normal deformation.
若2a2<2b2<2b1<D或2b2<2a2<2b1<D，则埋地管道沿水平方向的两侧的挤压变形程度和沿竖直方向的下半部分的变形程度均比常规正常变形更大，且变形与埋地管道经过修补有关。If 2a2<2b2<2b1<D or 2b2<2a2<2b1<D, the degree of extrusion deformation on both sides of the buried pipeline along the horizontal direction and the deformation degree of the lower part along the vertical direction are more than the conventional normal deformation Large, and the deformation is related to the repair of buried pipelines.
若D<2a2<2b2<2b1或D<2b2<2a2<2b1，则埋地管道沿水平方向的两侧的挤压变形程度和沿竖直方向的下半部分的变形程度均比常规正常变形更大，且变形与埋地管道的出厂制造精度有关。If D<2a2<2b2<2b1 or D<2b2<2a2<2b1, the degree of extrusion deformation on both sides of the buried pipeline along the horizontal direction and the deformation degree of the lower part along the vertical direction are more than the conventional normal deformation Large, and the deformation is related to the factory manufacturing precision of the buried pipeline.
进一步地，利用椭圆标准方程进行数据拟合后更便于得出第一拟合方程的横轴和纵轴的长度，便于得出埋地管道的变形量数值。利用椭圆标准方程进行数据拟合能够进一步降低埋地管道变形程度检测方法的实施难度。Further, it is easier to obtain the length of the horizontal axis and the vertical axis of the first fitting equation after data fitting using the ellipse standard equation, and it is convenient to obtain the deformation value of the buried pipeline. Using elliptic standard equations for data fitting can further reduce the difficulty of implementing the detection method for the deformation degree of buried pipelines.
需要说明的是，也可以利用除椭圆标准方程以外的椭圆方程进行数据拟合，但并不会影响结果的准确性。It should be noted that elliptic equations other than the standard elliptic equation can also be used for data fitting, but the accuracy of the results will not be affected.
考虑到埋地管道的管侧土可能存在回填不密实的影响，采用椭圆方程对第一检测点组和第二检测点组分别进行拟合分析，能够进一步提高最后得到的变形程度以及变形量数值的准确性。Considering that the soil on the side of the buried pipeline may be affected by backfill incompactness, using the elliptic equation to perform fitting analysis on the first detection point group and the second detection point group respectively can further improve the final deformation degree and deformation value accuracy.
进一步地，第一检测点组位于横轴的上方，第二检测点组位于横轴的下方。先将第一检测点组带入椭圆方程进行数据拟合得第二拟合方程，将第二拟合方程的中心点和横轴作为第三拟合方程的中心点以及长轴，再将第二检测点组带入椭圆方程进行数据拟合得出第三拟合方程。Further, the first detection point group is located above the horizontal axis, and the second detection point group is located below the horizontal axis. First, the first detection point group is brought into the ellipse equation for data fitting to obtain the second fitting equation, and the center point and horizontal axis of the second fitting equation are used as the center point and long axis of the third fitting equation, and then the second The second detection point group is brought into the elliptic equation for data fitting to obtain the third fitting equation.
取第二拟合方程的半竖轴和第三拟合方程的半竖轴的长度之和同埋地管道的出厂直径的差值，以得到埋地管道的第二变形程度特征，即埋地管道对应沿竖直方向的变形量数值。Take the difference between the length of the semi-vertical axis of the second fitting equation and the length of the semi-vertical axis of the third fitting equation and the factory diameter of the buried pipeline to obtain the second deformation degree characteristic of the buried pipeline, that is, the buried pipeline The pipe corresponds to the deformation value along the vertical direction.
进一步地，所述第一拟合方程的纵轴的长度为2b，所述第二拟合方程的纵轴的长度为2b1，所述第三拟合方程的纵轴的长度为2b2，所述埋地管道的出厂内径为D，所述第一拟合方程的横轴的长度为2a1，所述第二拟合方程和所述第三拟合方程二者的横轴的长度均为2a2。Further, the length of the vertical axis of the first fitting equation is 2b, the length of the vertical axis of the second fitting equation is 2b1, the length of the vertical axis of the third fitting equation is 2b2, the The factory inner diameter of the buried pipeline is D, the length of the horizontal axis of the first fitting equation is 2a1, and the length of the horizontal axis of both the second fitting equation and the third fitting equation is 2a2.
取第一变形程度特征和第二变形程度特征二者中变形量数值的绝对值较大的一者来表征埋地管道的变形程度特征。即：若|D-2b|>|D-(b1+b2)|，用b同D以及a1比较，得所述埋地管道的变形模式；若|D-2b|<|D-(b1+b2)|，用b1和b2同D以及a2比较，得所述埋地管道的变形模式。The deformation degree characteristic of the buried pipeline is represented by the one with the larger absolute value of the deformation value among the first deformation degree characteristic and the second deformation degree characteristic. That is: if |D-2b|>|D-(b1+b2)|, compare b with D and a1 to get the deformation mode of the buried pipeline; if |D-2b|<|D-(b1+ b2)|, compare b1 and b2 with D and a2 to get the deformation mode of the buried pipeline.
本发明实施例提供的埋地管道变形模式检测方法能够更加全面地反映管道结构的实际工作性态和变形模式，便于确定管道的变形模式，为管道结构安全评估提供依据。The detection method for the deformation mode of the buried pipeline provided by the embodiment of the present invention can more comprehensively reflect the actual working behavior and deformation mode of the pipeline structure, facilitate the determination of the deformation mode of the pipeline, and provide a basis for the safety assessment of the pipeline structure.
下面将结合具体实施例对上述的埋地管道变形模式检测方法的流程作具体说明。The flow of the above-mentioned buried pipeline deformation mode detection method will be specifically described below in conjunction with specific embodiments.
实施例Example
本实施例提供一种埋地管道变形模式检测方法，包括：This embodiment provides a buried pipeline deformation mode detection method, including:
1.在埋地管道的管腔中使用激光断面扫描仪收集埋地管道的位于内壁的n个检测点的坐标。各个检测点的坐标为： 1. Use a laser section scanner in the lumen of the buried pipeline to collect the coordinates of n detection points located on the inner wall of the buried pipeline. The coordinates of each detection point are:
其中，xi为第i个检测点的横坐标；zi为第i个检测点的纵坐标；di为第i个检测点到旋转中心的距离；θi为第i个检测点以旋转中心为原点并将横轴沿水平方向设置的旋转角度；i与n均为正整数且i小于或等于n。Among them, x i is the abscissa of the i-th detection point; z i is the ordinate of the i-th detection point; d i is the distance from the i-th detection point to the rotation center; θ i is the i-th detection point to rotate The center is the origin and the rotation angle is set along the horizontal axis; both i and n are positive integers and i is less than or equal to n.
2.将各个检测点的坐标带入椭圆标准方程Ax2+Bz2+Cx+Dz+E＝0进行数据拟合得到第一拟合方程。第一拟合方程的横轴长为2a1，纵轴长为2b。而横轴长为2a1即对应埋地管道沿水平方向的内径，纵轴长2b即对应埋地管道沿竖直方向的内径。于是，埋地管道沿竖直方向的变形量数值w1＝D-2b，其中，w1为埋地管道的变形量数值，D为埋地管道的出厂内径。2. Put the coordinates of each detection point into the ellipse standard equation Ax 2 +Bz 2 +Cx+Dz+E=0 to perform data fitting to obtain the first fitting equation. The length of the horizontal axis of the first fitting equation is 2a1, and the length of the vertical axis is 2b. The horizontal axis length 2a1 corresponds to the horizontal inner diameter of the buried pipeline, and the vertical axis length 2b corresponds to the vertical inner diameter of the buried pipeline. Therefore, the deformation value of the buried pipeline along the vertical direction w1=D-2b, where w1 is the deformation value of the buried pipeline, and D is the factory inner diameter of the buried pipeline.
3.沿第一拟合方程的横轴对应将检测点划分为第一检测点组和第二检测点组，第一检测点组位于横轴的上方，第二检测点组位于横轴的下方。将第一检测点组带入椭圆标准方程Ax2+Bz2+Cx+Dz+E＝0进行数据拟合得到第二拟合方程，将第二拟合方程的中心点和横轴作为第二检测点组进行拟合时的中心点和横轴，再将第二检测点组带入椭圆标准方程Ax2+Bz2+Cx+Dz+E＝0进行数据拟合得到第三拟合方程。第一拟合方程的纵轴的长度为2b，第二拟合方程的纵轴的长度为2b1，第三拟合方程的纵轴的长度为2b2，埋地管道的出厂内径为D，第一拟合方程的横轴的长度为2a1，第二拟合方程和第三拟合方程二者的横轴的长度均为2a2。如图1和图2所示。3. Correspondingly divide the detection points into the first detection point group and the second detection point group along the horizontal axis of the first fitting equation, the first detection point group is located above the horizontal axis, and the second detection point group is located below the horizontal axis . Bring the first detection point group into the ellipse standard equation Ax 2 +Bz 2 +Cx+Dz+E=0 for data fitting to obtain the second fitting equation, and use the center point and horizontal axis of the second fitting equation as the second The center point and the horizontal axis of the detection point group are fitted, and then the second detection point group is brought into the ellipse standard equation Ax 2 +Bz 2 +Cx+Dz+E=0 for data fitting to obtain the third fitting equation. The length of the vertical axis of the first fitting equation is 2b, the length of the vertical axis of the second fitting equation is 2b1, the length of the vertical axis of the third fitting equation is 2b2, the factory inner diameter of the buried pipeline is D, the first The length of the horizontal axis of the fitting equation is 2a1, and the length of the horizontal axis of both the second fitting equation and the third fitting equation is 2a2. As shown in Figure 1 and Figure 2.
4.若|D-2b|>|D-(b1+b2)|，用b同D以及a1比较，得埋地管道的变形模式。若|D-2b|<|D-(b1+b2)|，用b1和b2同D以及a2比较，得埋地管道的变形模式。具体比较结果与前述内容相同，此处不再赘述。4. If |D-2b|>|D-(b1+b2)|, compare b with D and a1 to get the deformation mode of the buried pipeline. If |D-2b|<|D-(b1+b2)|, compare b1 and b2 with D and a2 to get the deformation mode of the buried pipeline. The specific comparison results are the same as those described above, and will not be repeated here.
综上所述，本发明实施例提供的埋地管道变形模式检测方法能够更加全面地反映管道结构的实际工作性态和变形模式，便于确定管道的变形模式，为管道结构安全评估提供依据。In summary, the detection method for the deformation mode of the buried pipeline provided by the embodiment of the present invention can more comprehensively reflect the actual working behavior and deformation mode of the pipeline structure, facilitate the determination of the deformation mode of the pipeline, and provide a basis for the safety assessment of the pipeline structure.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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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