CN-121999149-A - Rock mass structural plane occurrence interpretation method, system, equipment and storage medium

CN121999149ACN 121999149 ACN121999149 ACN 121999149ACN-121999149-A

Abstract

The invention provides a method, a system, equipment and a storage medium for interpreting a rock mass structural plane, and relates to the technical field of geological exploration, wherein the method comprises the steps of acquiring a plurality of optical images of the wall of an inclined hole of a rock mass and azimuth data corresponding to each optical image; the method comprises the steps of carrying out rotation correction and splicing processing on optical images according to azimuth data of each optical image to form a continuous hole wall plane image, carrying out three-dimensional modeling processing on the hole wall plane image to form a hole wall three-dimensional image, establishing a space coordinate system of the hole wall three-dimensional image, selecting a preset number of characteristic points in the hole wall three-dimensional image, carrying out rotation transformation based on initial space coordinates of the characteristic points in the space coordinate system to obtain target space coordinates corresponding to the characteristic points, determining normal vectors of a rock structural plane according to the target space coordinates of the characteristic points, and carrying out interpretation based on the normal vectors to obtain inclination angle, trend parameters of the rock structural plane. The invention realizes high-precision interpretation of the occurrence of the rock mass structural plane.

Inventors

CHEN WEIDONG
CHEN ZONGGANG
HAN SONG
WANG YANQI
CHEN YONGHUI
Xue Hanpeng

Assignees

中国电建集团西北勘测设计研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20251216

Claims (10)

1. A method for interpreting the attitude of a structural face of a rock mass, comprising: acquiring a plurality of optical images of the walls of inclined holes of a rock mass and azimuth data corresponding to each optical image; Performing rotation correction and splicing treatment on the optical images according to the azimuth data of each optical image to form a continuous hole wall plane image; performing three-dimensional modeling processing on the hole wall plane image to form a hole wall three-dimensional image, and establishing a space coordinate system of the hole wall three-dimensional image; Selecting a preset number of characteristic points from the hole wall three-dimensional image, and carrying out rotation transformation based on initial space coordinates of the characteristic points in the space coordinate system to obtain target space coordinates corresponding to the characteristic points; And determining a normal vector of the rock mass structural plane according to the target space coordinates of the characteristic points, and performing interpretation based on the normal vector to obtain inclination angle, tendency and trend parameters of the rock mass structural plane.
2. The method for interpreting a structural face of a rock mass as recited in claim 1, wherein said acquiring a plurality of optical images of a borehole wall of the rock mass and corresponding azimuth data for each of said optical images comprises: Moving an in-hole camera device provided with an azimuth measurement module along the axis of the inclined hole according to a preset step length, performing circumferential imaging on the hole wall at each preset acquisition position to obtain image data corresponding to each preset acquisition position, and determining three-dimensional attitude information of the in-hole camera device at the preset acquisition position through the azimuth measurement module; And drawing the optical image of the inclined hole wall by using the image data corresponding to all the preset acquisition positions, and taking the three-dimensional attitude information of the in-hole camera device at the acquisition positions as the azimuth data of the optical image corresponding to the preset acquisition positions.
3. The method of claim 2, wherein the performing rotation correction and stitching on the optical images according to the azimuth data of each of the optical images to form a continuous hole wall plane image comprises: determining the rotation offset angle of the optical image according to the three-dimensional posture information corresponding to each optical image; For each optical image, reversely rotating the optical image according to the rotation offset angle to obtain a rotated optical image; And performing edge matching and seamless splicing on all the rotated optical images according to the depth of the preset acquisition position corresponding to the rotated optical images to obtain the hole wall plane image.
4. The method for interpreting a structural face of a rock mass as defined in claim 2, wherein said three-dimensional modeling of said planar image of the wall of the hole to form a three-dimensional image of the wall of the hole comprises: determining the modeling radius of the cylindrical surface corresponding to the hole wall plane image based on the actual aperture parameters of the inclined hole; winding the hole wall plane image into a closed cylindrical surface along the direction parallel to the axis of the inclined hole to form a cylindrical surface model; And placing the cylindrical surface model according to a preset space posture to obtain the hole wall three-dimensional image, wherein the preset space posture comprises that the axis of the cylindrical surface model is positioned on a horizontal plane and the hole bottom direction is in a north-right direction.
5. The method of claim 4, wherein the creating a spatial coordinate system of the three-dimensional image of the hole wall comprises: taking the orifice center point of the cylindrical surface model as a coordinate origin; the direction along the central axis of the cylindrical surface model and pointing to the hole bottom of the cylindrical surface model is a first geographic direction, the first geographic direction is the north direction, and the central axis towards the hole bottom is the positive direction of a first coordinate axis X; taking the direction which is perpendicular to the central axis at the origin of coordinates and points to the east of the first geographic azimuth as the forward direction of a second coordinate axis Y; Taking a third geographic position which is perpendicular to the central axis at the origin of coordinates and forms an included angle of 90 degrees with the east of the first geographic position as a forward direction of a third coordinate axis Z, namely a vertical upward direction; and constructing the space coordinate system of the hole wall three-dimensional image according to the first coordinate axis, the second coordinate axis and the third coordinate axis.
6. The method for interpreting a structural face of a rock mass according to claim 5, wherein selecting a preset number of feature points from the three-dimensional image of the hole wall, and performing rotation transformation based on initial spatial coordinates of the feature points in the spatial coordinate system to obtain target spatial coordinates corresponding to the feature points, includes: determining intersection lines of the rock mass structural surface and the cylindrical surface model in the hole wall three-dimensional image; Selecting at least three characteristic points along the intersecting line; determining initial space coordinates of each feature point in the space coordinate system based on the roll angle of the feature point and the radius parameter of the cylindrical surface model; based on the actual inclination angle of the inclined hole, carrying out clockwise rotation transformation on the initial space coordinate of each characteristic point along a second coordinate axis of the space coordinate system to obtain an intermediate space coordinate of each characteristic point; And carrying out clockwise rotation transformation on the intermediate space coordinates of each characteristic point along a third coordinate axis of the space coordinate system based on the actual tendency of the inclined holes to obtain target space coordinates corresponding to each characteristic point.
7. The method for interpreting a rock mass structural plane as defined in claim 6, wherein said determining a normal vector of a rock mass structural plane from said target spatial coordinates of said feature points and interpreting based on said normal vector to obtain tilt, inclination and strike parameters of said rock mass structural plane comprises: According to the target space coordinates of any two characteristic points, determining a space vector of the characteristic points in the extending direction of the rock mass structural plane; performing cross multiplication operation on the two space vectors to obtain a normal vector perpendicular to the rock mass structural plane; Determining an included angle between the rock mass structural plane and the horizontal plane according to the included angle relation between the normal vector and the vertical direction in the space coordinate system, and taking the included angle as the inclination angle of the rock mass structural plane; Determining an initial angle of the inclination of the rock mass structural plane according to the horizontal component information of the normal vector, and normalizing the initial angle to a complete circumference range through an angle correction rule to obtain the inclination of the rock mass structural plane; and according to the fixed angle association relation between the trend and the trend, carrying out angle offset calculation on the trend to obtain the trend parameter of the rock mass structural plane.
8. A rock mass structural plane attitude interpretation system, comprising: The acquisition unit is used for acquiring a plurality of optical images of the walls of the inclined holes of the rock mass and azimuth data corresponding to each optical image; The image processing unit is used for carrying out rotation correction and splicing processing on the optical images according to the azimuth data of each optical image to form continuous hole wall plane images; The three-dimensional modeling unit is used for carrying out three-dimensional modeling processing on the hole wall plane image to form a hole wall three-dimensional image, and establishing a space coordinate system of the hole wall three-dimensional image; the feature point extraction and transformation unit is used for selecting a preset number of feature points from the hole wall three-dimensional image, and carrying out rotation transformation based on initial space coordinates of the feature points in the space coordinate system to obtain target space coordinates corresponding to the feature points; And the structural plane parameter interpretation unit is used for determining a normal vector of the rock mass structural plane according to the target space coordinates of the characteristic points, and performing interpretation based on the normal vector to obtain the inclination angle, the tendency and the trend parameters of the rock mass structural plane.
9. An electronic device comprising a processor and a memory for storing a computer program; the computer program, when loaded by the processor, causes the processor to perform the rock mass structural plane production interpretation method of any one of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements a rock mass structural plane-shape interpretation method as claimed in any one of claims 1-7.

Description

Rock mass structural plane occurrence interpretation method, system, equipment and storage medium Technical Field The invention relates to the technical field of geological exploration, which can be used in a plurality of industries such as water and electricity, railways, highways, mineral products and the like, in particular to a method, a system, equipment and a storage medium for interpreting the occurrence of a rock mass structural plane. Background The occurrence of a rock mass structural plane is a key quantitative index for describing the spatial position of a geological structural plane, and consists of three parameters of trend, tendency and inclination angle. Therefore, the method accurately acquires and analyzes the occurrence data of the rock mass structural plane, and is the basis of rock mass engineering design, construction and geological disaster prevention and control work. Rock mass structural face production is typically measured using vertical bore hole wall optical images. In the related art, rotation is easy to occur when the in-hole camera lens moves, so that the seamless splicing difficulty of images is high, and further, the occurrence parameters of the rock mass structural surface are difficult to accurately and efficiently interpret. Disclosure of Invention The invention solves the problem of how to realize the interpretation of the occurrence of the rock mass structural plane according to the inclined hole image. In order to solve the problems, the invention provides a method, a system, equipment and a storage medium for interpreting the occurrence of a rock mass structural plane. In a first aspect, the invention provides a method for interpreting a rock mass structural plane attitude, comprising: Acquiring a plurality of optical images of the walls of the inclined holes and azimuth data corresponding to each optical image; Performing rotation correction and splicing treatment on the optical images according to the azimuth data of each optical image to form a continuous hole wall plane image; performing three-dimensional modeling processing on the hole wall plane image to form a hole wall three-dimensional image, and establishing a space coordinate system of the hole wall three-dimensional image; Selecting a preset number of characteristic points from the hole wall three-dimensional image, and carrying out rotation transformation based on initial space coordinates of the characteristic points in the space coordinate system to obtain target space coordinates corresponding to the characteristic points; And determining a normal vector of the rock mass structural plane according to the target space coordinates of the characteristic points, and performing interpretation based on the normal vector to obtain inclination angle, tendency and trend parameters of the rock mass structural plane. Optionally, acquiring a plurality of optical images of a borehole wall of an inclined borehole of the rock mass and azimuth data corresponding to each of the optical images includes: Moving an in-hole camera device provided with an azimuth measurement module along the axis of the inclined hole according to a preset step length, performing circumferential imaging on the hole wall at each preset acquisition position to obtain image data corresponding to each preset acquisition position, and determining three-dimensional attitude information of the in-hole camera device at the preset acquisition position through the azimuth measurement module; And drawing the optical image of the inclined hole wall by using the image data corresponding to all the preset acquisition positions, and taking the three-dimensional attitude information of the in-hole camera device at the acquisition positions as the azimuth data of the optical image corresponding to the preset acquisition positions. Optionally, performing rotation correction and stitching processing on the optical images according to azimuth data of each optical image to form continuous hole wall plane images, including: determining the rotation offset angle of the optical image according to the three-dimensional posture information corresponding to each optical image; For each optical image, reversely rotating the optical image according to the rotation offset angle to obtain a rotated optical image; And performing edge matching and seamless splicing on all the rotated optical images according to the depth of the preset acquisition position corresponding to the rotated optical images to obtain the hole wall plane image. Optionally, performing three-dimensional modeling processing on the hole wall plane image to form a hole wall three-dimensional image, including: determining the modeling radius of the cylindrical surface corresponding to the hole wall plane image based on the actual aperture parameters of the inclined hole; winding the hole wall plane image into a closed cylindrical surface along the direction parallel to the axis of the inclined hole to for