CN110442906B - Quantitative characterization method for plane morphological parameters of cardiac beach sand body - Google Patents
Quantitative characterization method for plane morphological parameters of cardiac beach sand body Download PDFInfo
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Abstract
The invention discloses a quantitative characterization method for plane morphological parameters of a heart beach sand body, which comprises the steps of firstly determining a construction angle alpha and a convergence angle beta, wherein the construction angle alpha is the plane angle of the heart beach sand body to be detected in the water-facing direction, the convergence angle beta is the plane angle of the heart beach sand body to be detected in the water-backing direction, the vertex of the construction angle alpha is used as a coordinate origin, then an X axis and a Y axis of a coordinate system are defined, wherein the east-west direction is the X axis, and the east-direction is positive; the south-north direction is a Y axis, the north direction is positive, then the boundary line of the heart beach sand body is divided into a plurality of sections, intersection points among the plurality of sections are used for making a circle, the circle boundary is coincided with the boundary line of the heart beach sand body to be detected between two adjacent intersection points, thus an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length are comprehensively constructed, the plane form of the heart beach sand body can be accurately represented quantitatively through parameters, the representation result is more accurate, and the representation result is closer to the form of the natural heart beach sand body.
Description
Technical Field
The invention belongs to the technical field of quantitative characterization of braided river deposition, and particularly relates to a quantitative characterization method of a cardiac beach sand body plane form parameter.
Background
At present, at home and abroad, the method for characterizing the planar morphology of the braided sand body of the heart beach is divided into two types, one type is qualitative expression: for example, "the plane of the sand body of the cardiac beach is spindle-shaped, and the section is flat at the bottom and convex at the top"; another is quantitative characterization directly using numbers: for example, "average thickness of sand body of cardiac beach is 3m, average length is 700m, and average width is 250 m". Both of these methods have different degrees of disadvantages, mainly manifested in:
(1) the qualitative characterization method comprises the following steps: although the method can vividly express the plane morphology of the sand body of the cardiac beach, the method lacks the concept of absolute quantity, the morphology of the sand body of the cardiac beach is the same, and the absolute scale can be as small as several meters or as large as thousands of meters; secondly, the presentation of the sand body form of the cardiac beach is too wide, the sand body form of the cardiac beach cannot be accurately depicted, for example, the plane form is in a spindle shape, the spindle shape can be a fat spindle shape with a smaller ratio of a long axis to a short axis, or a thin spindle shape with a larger ratio of the long axis to the short axis, and the plane form cannot be accurately described only by the spindle shape; most importantly, in modern braided river observation, the sand body shape of the cardiac beach is often varied and cannot be described simply by a spindle shape (or some other simple geometric shape).
(2) The quantitative characterization method comprises the following steps: the quantitative characterization can be used for describing the scale (length, width and thickness) of the sand body by using a digital quantitative description, so that the scale is visually impressive, but the expression mode is too single to reflect the change of the sand body in the length direction and the width direction, for example, the width (or the length) of the sand body is changed in a certain direction and is not a unique value.
Although the two methods can be combined with each other in a general situation, and can describe the external form of the sand body and also give quantitative data, the boundary characteristics of the sand body cannot be accurately described, so that it is necessary to develop a quantitative characterization method for plane form parameters of the sand body of the cardiac beach.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a quantitative characterization method for the plane morphological parameters of the sand body of the cardiac beach, and overcomes the defects that in the prior art, the plane morphological parameters are 1: the qualitative characterization method lacks the concept of absolute quantity, the expression is too wide, and the sand body form of the cardiac beach cannot be accurately depicted; 2: the quantitative characterization method has too single expression mode and cannot reflect the changes of the sand body in the length direction and the width direction; 3: the boundary characteristics of the sand body can not be accurately described by combining the existing qualitative characterization method and the existing quantitative characterization method.
In order to solve the technical problem, the technical scheme of the invention is as follows: a quantitative characterization method for plane morphological parameters of sand bodies of cardiac beach comprises the following steps:
step 1) determining a construction angle alpha and a convergence angle beta of a to-be-detected core beach sand body, wherein the construction angle alpha and the convergence angle beta are the minimum angle of the to-be-detected core beach sand body plane angle;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, and then defining an X axis and a Y axis of a coordinate system, wherein the X axis and the Y axis are vertical;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected in a clockwise direction from the origin of coordinates, defining the intersection point of two adjacent segments, and marking the coordinates of the intersection point;
step 4) making a circle by the two adjacent intersection points in the step 3), and defining the circle center of the circle to ensure that the circle boundary is coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points, wherein the circle boundary coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points is defined as an arc;
step 5) repeating the step 4) to completely determine the circle centers of all two adjacent intersection points of the cardiac beach sand body to be detected, and defining the coordinates of each circle center and the arc length between the two adjacent intersection points;
and 6) comprehensively constructing an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length, so that the plane form of the sand body of the cardiac beach can be accurately and quantitatively represented through parameters.
Preferably, the plane angle of the to-be-detected cardiac beach sand body in the water facing direction is set as a construction angle α in the step 1), and the plane angle of the to-be-detected cardiac beach sand body in the water backing direction is set as a convergence angle β.
Preferably, the coordinate system in step 2) sets the east-west direction as the X axis and the east direction as the positive direction; the north-south direction is the Y axis, and the north direction is positive.
Preferably, the intersection points in step 3) are from the coordinate origin of the construction angle α, and the intersection points are J1, J2, J3, … and Jn in sequence, wherein the coordinates of each intersection point are (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), …, (XJ (n-1), YJ (n-1)).
Preferably, the step 4) is to make a circle sequentially through J1 and J2, J2 and J3, …, and Jn-1 and Jn, and adjust the size of each circle to make the boundary of each circle coincide with the boundary line of the sand body between J1 and J2, J2 and J3, …, and the boundary line of the sand body between Jn-1 and Jn, where the center of each circle is O1, O2, O3, …, and On.
Preferably, the coordinates of each circle center in step 5) are (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), …, (XOn, YOn), where each arc length is L1, L2, L3, …, Ln.
Preferably, in the step 6), by constructing the angle α, the convergence angle β, the X-axis and Y-axis directions of the coordinate system, the coordinates (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), …, (XJ (n-1), YJ (n-1)), the coordinates (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), …, (XOn, YOn), and the arc lengths L1, L2, L3, …, and Ln, the plane shape of the sand body of the cardiac beach can be accurately and quantitatively characterized by parameters.
Compared with the prior art, the invention has the advantages that:
(1) when the method is used for carrying out the plane shape characterization of the cardiac beach sand body, firstly, a construction angle alpha and a convergence angle beta are determined, wherein the construction angle alpha is the plane angle of the cardiac beach sand body to be detected in the water-facing direction, the convergence angle beta is the plane angle of the cardiac beach sand body to be detected in the water-backing direction, the vertex of the construction angle alpha is used as a coordinate origin, then, an X axis and a Y axis of a coordinate system are defined, wherein the east-west direction is the X axis, and the east-direction is positive; the south-north direction is a Y axis, the north direction is positive, then the boundary line of the heart beach sand body is divided into a plurality of sections, intersection points among the plurality of sections are made into a circle, the circle boundary is coincided with the boundary line of the heart beach sand body to be detected between two adjacent intersection points, thus an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length are comprehensively constructed, the plane form of the heart beach sand body can be accurately and quantitatively represented through parameters, the representation result is more accurate and is closer to the form of the natural heart beach sand body, the non-standardization of the simple description by terms such as spindle shape and the like is avoided, and meanwhile, the description of the heart beach sand bodies with different forms by simply depending on the equivalent standard of length and width is avoided;
(2) according to the method, the plane form of the sand body of the cardiac beach is represented quantitatively through parameters, and simulation can be performed through a computer, so that an inaccurate result caused by purely depending on character description and a result which can be accurately described only depending on pure tracing are avoided, and the efficiency of simulating the sand body image of the cardiac beach is higher;
(3) the method for quantitatively characterizing the plane morphological parameters of the cardiac beach sand body has the advantages of simple steps, convenient operation and high practicability, can be widely applied to characterization of any morphological cardiac beach sand body in the nature, has wider application range and more accurate characterization result, and is closer to the shape of the cardiac beach sand body in the nature.
Drawings
FIG. 1 is a schematic diagram of a plane boundary of a cardiac sand body extracted from a natural cardiac sand body image;
FIG. 2 is a schematic diagram illustrating a method for quantitatively characterizing a sand plane morphological parameter of a cardiac beach in an embodiment 8 of the present invention;
FIG. 3 is a schematic drawing of a method for quantitatively characterizing the planar morphological parameters of the sand body of the cardiac beach in the embodiment 8 of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to examples:
it should be noted that the structures, proportions, sizes, and other embodiments disclosed herein are illustrative only and are not intended to limit the scope of the invention, which is defined by the claims, since the scope of the invention is not limited by the specific structures, proportions, and dimensions, or otherwise, unless otherwise specified, since various modifications, changes in the proportions and variations thereof, can be made by those skilled in the art without departing from the spirit and scope of the invention.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Example 1
The invention discloses a quantitative characterization method for plane morphological parameters of sand bodies of cardiac beach, which comprises the following steps:
step 1) determining a construction angle alpha and a convergence angle beta of a to-be-detected core beach sand body, wherein the construction angle alpha and the convergence angle beta are the minimum angle of the to-be-detected core beach sand body plane angle;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, and then defining an X axis and a Y axis of a coordinate system, wherein the X axis and the Y axis are vertical;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected in a clockwise direction from the origin of coordinates, defining the intersection point of two adjacent segments, and marking the coordinates of the intersection point;
step 4) making a circle by the two adjacent intersection points in the step 3), and defining the circle center of the circle to ensure that the circle boundary is coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points, wherein the circle boundary coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points is defined as an arc;
step 5) repeating the step 4) to completely determine the circle centers of all two adjacent intersection points of the cardiac beach sand body to be detected, and defining the coordinates of each circle center and the arc length between the two adjacent intersection points;
and 6) comprehensively constructing an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length, so that the plane form of the sand body of the cardiac beach can be accurately and quantitatively represented through parameters.
Example 2
The invention discloses a quantitative characterization method for plane morphological parameters of sand bodies of cardiac beach, which comprises the following steps:
step 1) determining a construction angle alpha and a convergence angle beta of a to-be-detected core beach sand body, wherein the construction angle alpha and the convergence angle beta are the minimum angle of the to-be-detected core beach sand body plane angle;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, and then defining an X axis and a Y axis of a coordinate system, wherein the X axis and the Y axis are vertical;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected in a clockwise direction from the origin of coordinates, defining the intersection point of two adjacent segments, and marking the coordinates of the intersection point;
step 4) making a circle by the two adjacent intersection points in the step 3), and defining the circle center of the circle to ensure that the circle boundary is coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points, wherein the circle boundary coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points is defined as an arc;
step 5) repeating the step 4) to completely determine the circle centers of all two adjacent intersection points of the cardiac beach sand body to be detected, and defining the coordinates of each circle center and the arc length between the two adjacent intersection points;
and 6) comprehensively constructing an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length, so that the plane form of the sand body of the cardiac beach can be accurately and quantitatively represented through parameters.
Preferably, the plane angle of the to-be-detected cardiac beach sand body in the water facing direction is set as a construction angle α in the step 1), and the plane angle of the to-be-detected cardiac beach sand body in the water backing direction is set as a convergence angle β.
Example 3
The invention discloses a quantitative characterization method for plane morphological parameters of sand bodies of cardiac beach, which comprises the following steps:
step 1) determining a construction angle alpha and a convergence angle beta of a to-be-detected core beach sand body, wherein the construction angle alpha and the convergence angle beta are the minimum angle of the to-be-detected core beach sand body plane angle;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, and then defining an X axis and a Y axis of a coordinate system, wherein the X axis and the Y axis are vertical;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected in a clockwise direction from the origin of coordinates, defining the intersection point of two adjacent segments, and marking the coordinates of the intersection point;
step 4) making a circle by the two adjacent intersection points in the step 3), and defining the circle center of the circle to ensure that the circle boundary is coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points, wherein the circle boundary coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points is defined as an arc;
step 5) repeating the step 4) to completely determine the circle centers of all two adjacent intersection points of the cardiac beach sand body to be detected, and defining the coordinates of each circle center and the arc length between the two adjacent intersection points;
and 6) comprehensively constructing an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length, so that the plane form of the sand body of the cardiac beach can be accurately and quantitatively represented through parameters.
Preferably, the plane angle of the to-be-detected cardiac beach sand body in the water facing direction is set as a construction angle α in the step 1), and the plane angle of the to-be-detected cardiac beach sand body in the water backing direction is set as a convergence angle β.
Preferably, the coordinate system in step 2) sets the east-west direction as the X axis and the east direction as the positive direction; the north-south direction is the Y axis, and the north direction is positive.
Example 4
The invention discloses a quantitative characterization method for plane morphological parameters of sand bodies of cardiac beach, which comprises the following steps:
step 1) determining a construction angle alpha and a convergence angle beta of a to-be-detected core beach sand body, wherein the construction angle alpha and the convergence angle beta are the minimum angle of the to-be-detected core beach sand body plane angle;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, and then defining an X axis and a Y axis of a coordinate system, wherein the X axis and the Y axis are vertical;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected in a clockwise direction from the origin of coordinates, defining the intersection point of two adjacent segments, and marking the coordinates of the intersection point;
step 4) making a circle by the two adjacent intersection points in the step 3), and defining the circle center of the circle to ensure that the circle boundary is coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points, wherein the circle boundary coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points is defined as an arc;
step 5) repeating the step 4) to completely determine the circle centers of all two adjacent intersection points of the cardiac beach sand body to be detected, and defining the coordinates of each circle center and the arc length between the two adjacent intersection points;
and 6) comprehensively constructing an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length, so that the plane form of the sand body of the cardiac beach can be accurately and quantitatively represented through parameters.
Preferably, the plane angle of the to-be-detected cardiac beach sand body in the water facing direction is set as a construction angle α in the step 1), and the plane angle of the to-be-detected cardiac beach sand body in the water backing direction is set as a convergence angle β.
Preferably, the coordinate system in step 2) sets the east-west direction as the X axis and the east direction as the positive direction; the north-south direction is the Y axis, and the north direction is positive.
Preferably, the intersection points in step 3) are from the coordinate origin of the construction angle α, and the intersection points are J1, J2, J3, … and Jn in sequence, wherein the coordinates of each intersection point are (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), …, (XJ (n-1), YJ (n-1)).
Example 5
The invention discloses a quantitative characterization method for plane morphological parameters of sand bodies of cardiac beach, which comprises the following steps:
step 1) determining a construction angle alpha and a convergence angle beta of a to-be-detected core beach sand body, wherein the construction angle alpha and the convergence angle beta are the minimum angle of the to-be-detected core beach sand body plane angle;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, and then defining an X axis and a Y axis of a coordinate system, wherein the X axis and the Y axis are vertical;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected in a clockwise direction from the origin of coordinates, defining the intersection point of two adjacent segments, and marking the coordinates of the intersection point;
step 4) making a circle by the two adjacent intersection points in the step 3), and defining the circle center of the circle to ensure that the circle boundary is coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points, wherein the circle boundary coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points is defined as an arc;
step 5) repeating the step 4) to completely determine the circle centers of all two adjacent intersection points of the cardiac beach sand body to be detected, and defining the coordinates of each circle center and the arc length between the two adjacent intersection points;
and 6) comprehensively constructing an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length, so that the plane form of the sand body of the cardiac beach can be accurately and quantitatively represented through parameters.
Preferably, the plane angle of the to-be-detected cardiac beach sand body in the water facing direction is set as a construction angle α in the step 1), and the plane angle of the to-be-detected cardiac beach sand body in the water backing direction is set as a convergence angle β.
Preferably, the coordinate system in step 2) sets the east-west direction as the X axis and the east direction as the positive direction; the north-south direction is the Y axis, and the north direction is positive.
Preferably, the intersection points in step 3) are from the coordinate origin of the construction angle α, and the intersection points are J1, J2, J3, … and Jn in sequence, wherein the coordinates of each intersection point are (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), …, (XJ (n-1), YJ (n-1)).
Preferably, the step 4) is to make a circle sequentially through J1 and J2, J2 and J3, …, and Jn-1 and Jn, and adjust the size of each circle to make the boundary of each circle coincide with the boundary line of the sand body between J1 and J2, J2 and J3, …, and the boundary line of the sand body between Jn-1 and Jn, where the center of each circle is O1, O2, O3, …, and On.
Example 6
The invention discloses a quantitative characterization method for plane morphological parameters of sand bodies of cardiac beach, which comprises the following steps:
step 1) determining a construction angle alpha and a convergence angle beta of a to-be-detected core beach sand body, wherein the construction angle alpha and the convergence angle beta are the minimum angle of the to-be-detected core beach sand body plane angle;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, and then defining an X axis and a Y axis of a coordinate system, wherein the X axis and the Y axis are vertical;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected in a clockwise direction from the origin of coordinates, defining the intersection point of two adjacent segments, and marking the coordinates of the intersection point;
step 4) making a circle by the two adjacent intersection points in the step 3), and defining the circle center of the circle to ensure that the circle boundary is coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points, wherein the circle boundary coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points is defined as an arc;
step 5) repeating the step 4) to completely determine the circle centers of all two adjacent intersection points of the cardiac beach sand body to be detected, and defining the coordinates of each circle center and the arc length between the two adjacent intersection points;
and 6) comprehensively constructing an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length, so that the plane form of the sand body of the cardiac beach can be accurately and quantitatively represented through parameters.
Preferably, the plane angle of the to-be-detected cardiac beach sand body in the water facing direction is set as a construction angle α in the step 1), and the plane angle of the to-be-detected cardiac beach sand body in the water backing direction is set as a convergence angle β.
Preferably, the coordinate system in step 2) sets the east-west direction as the X axis and the east direction as the positive direction; the north-south direction is the Y axis, and the north direction is positive.
Preferably, the intersection points in step 3) are from the coordinate origin of the construction angle α, and the intersection points are J1, J2, J3, … and Jn in sequence, wherein the coordinates of each intersection point are (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), …, (XJ (n-1), YJ (n-1)).
Preferably, the step 4) is to make a circle sequentially through J1 and J2, J2 and J3, …, and Jn-1 and Jn, and adjust the size of each circle to make the boundary of each circle coincide with the boundary line of the sand body between J1 and J2, J2 and J3, …, and the boundary line of the sand body between Jn-1 and Jn, where the center of each circle is O1, O2, O3, …, and On.
Preferably, the coordinates of each circle center in step 5) are (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), …, (XOn, YOn), where each arc length is L1, L2, L3, …, Ln.
Example 7
The invention discloses a quantitative characterization method for plane morphological parameters of sand bodies of cardiac beach, which comprises the following steps:
step 1) determining a construction angle alpha and a convergence angle beta of a to-be-detected core beach sand body, wherein the construction angle alpha and the convergence angle beta are the minimum angle of the to-be-detected core beach sand body plane angle;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, and then defining an X axis and a Y axis of a coordinate system, wherein the X axis and the Y axis are vertical;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected in a clockwise direction from the origin of coordinates, defining the intersection point of two adjacent segments, and marking the coordinates of the intersection point;
step 4) making a circle by the two adjacent intersection points in the step 3), and defining the circle center of the circle to ensure that the circle boundary is coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points, wherein the circle boundary coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points is defined as an arc;
step 5) repeating the step 4) to completely determine the circle centers of all two adjacent intersection points of the cardiac beach sand body to be detected, and defining the coordinates of each circle center and the arc length between the two adjacent intersection points;
and 6) comprehensively constructing an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length, so that the plane form of the sand body of the cardiac beach can be accurately and quantitatively represented through parameters.
Preferably, the plane angle of the to-be-detected cardiac beach sand body in the water facing direction is set as a construction angle α in the step 1), and the plane angle of the to-be-detected cardiac beach sand body in the water backing direction is set as a convergence angle β.
Preferably, the coordinate system in step 2) sets the east-west direction as the X axis and the east direction as the positive direction; the north-south direction is the Y axis, and the north direction is positive.
Preferably, the intersection points in step 3) are from the coordinate origin of the construction angle α, and the intersection points are J1, J2, J3, … and Jn in sequence, wherein the coordinates of each intersection point are (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), …, (XJ (n-1), YJ (n-1)).
Preferably, the step 4) is to make a circle sequentially through J1 and J2, J2 and J3, …, and Jn-1 and Jn, and adjust the size of each circle to make the boundary of each circle coincide with the boundary line of the sand body between J1 and J2, J2 and J3, …, and the boundary line of the sand body between Jn-1 and Jn, where the center of each circle is O1, O2, O3, …, and On.
Preferably, the coordinates of each circle center in step 5) are (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), …, (XOn, YOn), where each arc length is L1, L2, L3, …, Ln.
Preferably, in the step 6), by constructing the angle α, the convergence angle β, the X-axis and Y-axis directions of the coordinate system, the coordinates (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), …, (XJ (n-1), YJ (n-1)), the coordinates (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), …, (XOn, YOn), and the arc lengths L1, L2, L3, …, and Ln, the plane shape of the sand body of the cardiac beach can be accurately and quantitatively characterized by parameters.
Example 8
As shown in fig. 1, any cardiac beach sand body in nature is selected.
As shown in fig. 2, the water flow direction is determined in step 1), the plane angle of the to-be-detected cardiac beach sand body in the water-facing direction is set as a construction angle α, and the plane angle of the to-be-detected cardiac beach sand body in the water-backing direction is set as a convergence angle β;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, then defining an X axis and a Y axis of a coordinate system, and setting an east-west direction as the X axis and an east-east direction as a positive direction; the north-south direction is the Y axis, and the north direction is positive;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected clockwise from the origin of coordinates, dividing the boundary line into 4 segments, defining intersection points J1, J2, J3 and J4 of two adjacent segments, and marking intersection point coordinates (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), (XJ 4 and YJ 4);
step 4) making a circle by the two adjacent intersection points in the step 3), and defining circle centers O1, O2, O3 and O4 of the circle to enable the circle boundary to coincide with the boundary line of the sand body of the cardiac beach to be detected between the two adjacent intersection points;
step 5) repeating the step 4) to completely determine the centers of all the adjacent two intersection points of the cardiac beach sand body to be detected, and defining coordinates (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), (XO 4 and YO 4) of each center, wherein arcs are four sections of L1, L2, L3 and L4;
and 6) accurately and quantitatively representing the plane form of the sand body of the cardiac beach through the construction of an angle alpha, a convergence angle beta, X-axis and Y-axis directions of a coordinate system, coordinates (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), (XJ 4, YJ 4) of each intersection point, coordinates (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), (XO 4, YO 4) of each circle center, and the lengths L1, L2, L3 and L4 of each circular arc.
As shown in fig. 3, the data may be input by mapping software to construct an angle α, a convergence angle β, X-axis and Y-axis directions of a coordinate system, coordinates (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), (XJ 4, and YJ 4) of each intersection point, coordinates (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), (XO 4, and YO 4) of each circle center, and lengths L1, L2, L3, and L4 of each circle center, so as to map the same shape of the selected sand.
When the method is used for carrying out the plane shape characterization of the cardiac beach sand body, firstly, a construction angle alpha and a convergence angle beta are determined, wherein the construction angle alpha is the plane angle of the cardiac beach sand body to be detected in the water-facing direction, the convergence angle beta is the plane angle of the cardiac beach sand body to be detected in the water-backing direction, the vertex of the construction angle alpha is used as a coordinate origin, then, an X axis and a Y axis of a coordinate system are defined, wherein the east-west direction is the X axis, and the east-direction is positive; the south-north direction is a Y axis, the north direction is positive, then the boundary line of the heart beach sand body is divided into a plurality of sections, intersection points among the plurality of sections are made into a circle, the circle boundary is coincided with the boundary line of the heart beach sand body to be detected between two adjacent intersection points, thus an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length are comprehensively constructed, the plane form of the heart beach sand body can be accurately and quantitatively represented through parameters, the representation result is more accurate and is closer to the form of the natural heart beach sand body, the non-standardization of the simple description by terms such as spindle shape and the like is avoided, and meanwhile, the description of the heart beach sand bodies with different forms by simply depending on the equivalent standard of length and width is avoided;
according to the method, the plane form of the sand body of the cardiac beach is represented quantitatively through parameters, and simulation can be performed through a computer, so that an inaccurate result caused by purely depending on character description and a result which can be accurately described only depending on pure tracing are avoided, and the efficiency of simulating the sand body image of the cardiac beach is higher;
the quantitative characterization method for the plane morphological parameters of the cardiac beach sand body has the advantages of simple steps and convenience in operation, can be widely applied to characterization of any morphological cardiac beach sand body in the nature, and has a wider application range.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (6)
1. A quantitative characterization method for plane morphological parameters of sand bodies of cardiac beach is characterized by comprising the following steps:
step 1) determining a construction angle alpha and a convergence angle beta of a to-be-detected core beach sand body, wherein the construction angle alpha and the convergence angle beta are the minimum angle of the to-be-detected core beach sand body plane angle, setting the plane angle of the to-be-detected core beach sand body facing to the water direction as the construction angle alpha, and setting the plane angle of the to-be-detected core beach sand body facing to the water direction as the convergence angle beta;
step 2) taking the top of the construction angle alpha set in the step 1) as a coordinate origin, and then defining an X axis and a Y axis of a coordinate system, wherein the X axis and the Y axis are vertical;
step 3) segmenting the boundary line of the cardiac beach sand body to be detected in a clockwise direction from the origin of coordinates, defining the intersection point of two adjacent segments, and marking the coordinates of the intersection point;
step 4) making a circle by the two adjacent intersection points in the step 3), and defining the circle center of the circle to ensure that the circle boundary is coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points, wherein the circle boundary coincided with the boundary line of the to-be-detected cardiac beach sand body between the two adjacent intersection points is defined as an arc;
step 5) repeating the step 4) to completely determine the circle centers of all two adjacent intersection points of the cardiac beach sand body to be detected, and defining the coordinates of each circle center and the arc length between the two adjacent intersection points;
and 6) comprehensively constructing an angle alpha, a convergence angle beta, a coordinate system, coordinates of each intersection point, coordinates of each circle center and corresponding arc length, so that the plane form of the sand body of the cardiac beach can be accurately and quantitatively represented through parameters.
2. The method of claim 1, wherein the method comprises the following steps: the coordinate system in the step 2) sets the east-west direction as an X axis and the east direction as a positive direction; the north-south direction is the Y axis, and the north direction is positive.
3. The method of claim 1, wherein the method comprises the following steps: the intersection points in the step 3) are from the coordinate origin of the construction angle alpha, and the intersection points are J1, J2, J3, … and Jn in sequence, wherein the coordinates of each intersection point are (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), …, (XJ (n-1) and YJ (n-1)).
4. The method of claim 3, wherein the method comprises the following steps: and step 4) specifically, making a circle sequentially through J1 and J2, J2 and J3, …, Jn-1 and Jn, and adjusting the size of each circle to enable the boundary of each circle to be respectively superposed with the boundary line of the sand body of the cardiac beach between J1 and J2, J2 and J3, …, Jn-1 and Jn, wherein the circle center of each circle is O1, O2, O3, … and On.
5. The method of claim 1, wherein the method comprises the following steps: the coordinates of each circle center in the step 5) are (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), …, (XOn, YOn), wherein the lengths of each arc are L1, L2, L3, …, Ln.
6. The method of claim 1, wherein the method comprises the following steps: in the step 6), by constructing the angle α, the convergence angle β, the X-axis and Y-axis directions of the coordinate system, the coordinates (0, 0), (XJ 2, YJ 2), (XJ 3, YJ 3), …, (XJ (n-1), YJ (n-1)), the coordinates (XO 1, YO 1), (XO 2, YO 2), (XO 3, YO 3), …, (XOn, YOn) of each circle center, the arc lengths L1, L2, L3, …, and Ln, the plane shape of the sand body of the cardiac beach can be accurately and quantitatively characterized by the parameters.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268317A (en) * | 2014-09-12 | 2015-01-07 | 西北工业大学 | Mechanical part circular bead structure shape optimization method |
| CN108334665A (en) * | 2018-01-05 | 2018-07-27 | 中国石油天然气股份有限公司 | A kind of braided stream reservoir architecture unit quantitatively characterizing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6175184B1 (en) * | 1998-02-12 | 2001-01-16 | Micron Technology, Inc. | Buffered resist profile etch of a field emission device structure |
-
2019
- 2019-07-01 CN CN201910584469.7A patent/CN110442906B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268317A (en) * | 2014-09-12 | 2015-01-07 | 西北工业大学 | Mechanical part circular bead structure shape optimization method |
| CN108334665A (en) * | 2018-01-05 | 2018-07-27 | 中国石油天然气股份有限公司 | A kind of braided stream reservoir architecture unit quantitatively characterizing method |
Non-Patent Citations (3)
| Title |
|---|
| Contour coding through stretching of discrete circular arcs by affine transformation;Sambhunath Biswas;《Pattern Recognition》;20011231;第34卷;第63-77页 * |
| 一种辫状河心滩砂体构型解剖新方法;马志欣 等;《天然气工业》;20180731;第38卷(第7期);第16-24页 * |
| 报废汽车挡风玻璃边缘轮廓的双圆弧优化拟合方法研究;毛慧俊 等;《再生资源与循环经济》;20181231;第11卷(第7期);第35-38页 * |
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