Open pit coal mine DEM accurate cutting method considering local detail characteristics

A technology of detail features and open-pit coal mines, which is applied in special data processing applications, image data processing, instruments, etc., and can solve problems such as local details

Active Publication Date: 2019-07-19
LIAONING TECHNICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In short, none of the above techniques take into account the local details of the DEM described by the TIN during the clipping process, and what is achieved is not "fine" clipping

Method used

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  • Open pit coal mine DEM accurate cutting method considering local detail characteristics
  • Open pit coal mine DEM accurate cutting method considering local detail characteristics
  • Open pit coal mine DEM accurate cutting method considering local detail characteristics

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Embodiment Construction

[0061] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. As a part of this specification, the principles of the present invention will be described through examples. Other aspects, features and advantages of the present invention will become clear through the detailed description. In the referenced drawings, the same reference numerals are used for the same or similar components in different drawings.

[0062] In the present invention, in order to improve the clipping efficiency of the DEM described by TIN, first construct the grid index according to the range of clipped TIN and the triangle side length in TIN, and the point, side and triangle in clipping polygon and TIN Mapped to each cell in the index of the constructed grid, then, based on the clipped TIN interpolation, calculate the elevation of the intersection of the vertices of the polygon to be clipped and the triangle in the TIN, that i...

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Abstract

The invention discloses an open pit coal mine DEM accurate cutting method considering local detail characteristics. The method comprises the steps of establishing the grid indexes of a triangular netto be cut and a cutting polygon; embedding the cut polygons into the triangular net; generating a cut TIN boundary; carrying out the TIN cutting. According to the present invention, on the basis of constructing the DEM to be cut and cutting the polygon grid index, performing the accurate interpolation on the cut polygon based on the to-be-cut TIN, and embedding the cutting polygon into a to-be-cutTIN, and according to the topological relation of the TIN triangular set in the cut polygon, constructing the cut TIN boundary, the triangulation network between the cut polygon and the cut TIN boundary is constructed by adopting an edge-first one-time CDT growth algorithm, the accurate cutting of the DEM described by the TIN is realized, and the experimental verification proves that the implementation method provided by the invention is high in efficiency and stable in operation, and has been successfully applied to the open pit coal mine digital mining design practice.

Description

technical field [0001] The invention belongs to the technical field of open-pit coal mines, and in particular relates to a method for precisely cutting a DEM of open-pit coal mines in consideration of local detail features. Background technique [0002] Constructing the geological model of the deposit is the basis for realizing the digital mining design of the open-pit coal mine. Since the coal deposit is a typical sedimentary deposit, the coal-bearing strata generally have a good layered structure. Therefore, each geological layer in the geological model of the coal deposit is usually selected by TIN Described DEM model. In the subsequent digital mining design application process of the coal bed geological model integrated with multi-layer geological level DEM, it is often necessary to cut the constructed DEM according to the local mining or geological data update range. Therefore, it is necessary to design and implement an efficient The DEM clipping algorithm is of great ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T19/20
CPCG06T19/20G06F30/20
Inventor 赵景昌高菲孙宝志王东
Owner LIAONING TECHNICAL UNIVERSITY
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