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CN-122023696-A - Light-weight online analysis framework for mine three-dimensional entity geological model

CN122023696ACN 122023696 ACN122023696 ACN 122023696ACN-122023696-A

Abstract

The invention provides a lightweight online analysis framework for a three-dimensional solid geological model of a mine, which comprises a drilling data intelligent fusion module, a hybrid lightweight modeling module, a distributed computing engine and a distributed computing engine, wherein the drilling data intelligent fusion module is used for carrying out feature extraction, multi-coordinate system unification and incremental topology updating on drilling data by adopting an improved Douglas-Peucker algorithm, the hybrid lightweight modeling module comprises an octree-triangle network coupling structure and a dynamic compression transmission unit, the octree-triangle network coupling structure is realized in such a way that the minimum division granularity of octree node memory attribute data is less than or equal to 0.5m < 3 >, the dynamic precision switching is realized by dynamically associating a triangle network LOD level with a viewpoint distance, the near end keeps 0.05m precision, the far end is reduced to 0.2m precision, and the two-way index table records the mapping relation between octree leaf nodes and triangle network vertexes. According to the invention, the data volume of the traditional full triangle network model is compressed, and a dynamic streaming strategy is adopted, so that the loading time of the first screen of the mine model of the billion-level unit is shortened compared with that of the traditional scheme in the conventional 4G network environment, and the real-time retrieval requirement of the mobile terminal is met.

Inventors

  • YANG HUI
  • YAN JUNSHENG
  • JI KANG
  • LIU ZAIBIN
  • GAO YAOQUAN
  • WU SUYUAN

Assignees

  • 西安煤科透明地质科技有限公司

Dates

Publication Date
20260512
Application Date
20260121

Claims (8)

  1. 1. A lightweight online analysis framework for a three-dimensional solid geological model of a mine, the framework comprising: The intelligent drilling data fusion module is used for carrying out feature extraction, multi-coordinate system unification and incremental topology update on drilling data by adopting an improved Douglas-Peucker algorithm; The hybrid lightweight modeling module comprises an octree-triangle network coupling structure and a dynamic compression transmission unit; the octree-triangle network coupling structure is realized in such a way that the minimum division granularity of the octree node memory attribute data is less than or equal to 0.5m < 3 >, the near end keeps 0.05m precision and the far end reduces to 0.2m precision through the dynamic correlation of the triangle network LOD level and the viewpoint distance, and the dynamic precision switching is realized; the distributed computing engine is used for integrating the WebGL accelerated seepage simulator and the incremental updating algorithm.
  2. 2. The lightweight online analysis framework for a three-dimensional solid geologic model of mines of claim 1, wherein the modified Douglas-Peucker algorithm comprises: the dynamic threshold setting module is used for automatically adjusting the compression threshold epsilon=0.1d according to the drilling diameter D; The rock stratum demarcation point identification unit is used for screening key control points based on the inclination angle change rate; And the error compensation mechanism is used for ensuring the thickness precision of the coal seam through secondary B-spline interpolation.
  3. 3. The lightweight online analysis framework for a three-dimensional solid geologic model of a mine as claimed in claim 2, wherein the error compensation mechanism is specifically implemented by: step 101, calculating the elevation difference delta h of the top and bottom plates of an original coal seam; 102, performing B spline interpolation on the simplified control points to obtain an approximate top-bottom plate curve; And 103, adjusting the positions of the control points to enable the relation between the elevation difference delta h 'of the top and bottom plates of the other coal beds and the elevation difference delta h of the top and bottom plates of the original coal beds to meet the condition that the absolute value of delta h' -delta h absolute value/delta h is less than 2%.
  4. 4. The lightweight online analysis framework for a three-dimensional solid geologic model of a mine of claim 1, wherein the specific method for dynamic precision switching comprises the steps of: step 201, calculating Euclidean distance d from a viewpoint to the surface of a roadway in real time; step 202, when d <5m, starting L0 level triangle network; Step 203, when d is less than or equal to 5m and less than or equal to 20m, switching the triangular network to the L1 level; in step 204, when d is not less than 20m, the triangle network uses L2 level simplified model.
  5. 5. The light-weight online analysis framework for the three-dimensional solid geological model of the mine, as claimed in claim 1, wherein the dynamic compression transmission unit comprises local coordinate system quantization coding of vertex coordinates, octahedral mapping compression of normal vectors, and ASTC 6x6 format and deep learning super-division combined compression of texture data.
  6. 6. The lightweight online analysis framework for a three-dimensional solid geologic model of a mine of claim 1, wherein the WebGL accelerated seepage simulator comprises: The finite volume method discretization unit is used for converting Darcy's law into a GPU parallel computing format; The data block loading unit is used for dividing the calculation domain according to the 32x32x32 voxels; A boundary synchronization mechanism for performing inter-thread group data exchanges every 10 iterations.
  7. 7. The lightweight online analysis framework for a three-dimensional solid geologic model of a mine of claim 1, wherein the incremental update algorithm comprises: the topological relation map construction unit is used for recording the space and mechanical association between the model units; a local influence domain calculation module for automatically identifying an update region with radius r=3d based on the new data; the Delaunay triangulation engine is constrained to preserve the unchanged area of the existing model.
  8. 8. The light-weight online analysis framework for the three-dimensional solid geological model of the mine, as set forth in claim 1, further comprising a data visualization terminal, wherein the data visualization terminal is used for supporting multi-user collaborative operation and real-time calculation result rendering.

Description

Light-weight online analysis framework for mine three-dimensional entity geological model Technical Field The invention belongs to the technical field of coal mine wells, relates to a geological model, and particularly relates to a lightweight online analysis frame for a three-dimensional solid geological model of a mine. Background The coal mine intellectualization is a new stage of comprehensive mechanized development of coal, is a new direction of the revolution of coal production modes and productivity, and is a core technical support for high-quality development of the coal industry. The existing mine three-dimensional modeling technology has the following key defects. Firstly, model redundancy and loading bottleneck are that the traditional modeling method adopts a full-precision triangle network to construct the surface of a geologic body, so that the data volume of the model exceeds the processing capacity of conventional hardware, and particularly, serious performance constraints exist at a mobile end and a Web end. Secondly, the fusion of drilling data fails, namely, the key geological features in the fusion process are lost due to the coordinate system, precision and format difference of geological exploration data, engineering design data and real-time monitoring data. Third, the online analysis real-time performance is insufficient, namely the existing Web three-dimensional engine cannot support real-time response of complex physical processes such as roadway water burst simulation, stress field calculation and the like by adopting a global model loading mechanism. Fourthly, a dynamic updating mechanism is lacked, namely the model updating relies on a global reconstruction algorithm and cannot adapt to the working condition requirement of the rapid propulsion of the underground tunneling surface. Therefore, a light-weight online analysis framework for a three-dimensional solid geological model of a mine is needed, and the problems of technical pain points of data redundancy, low multisource fusion precision, high online analysis delay and poor dynamic update efficiency of the three-dimensional geological model in the prior art are solved. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a light-weight online analysis framework for a three-dimensional solid geological model of a mine, which solves the technical problem that the overall performance of the three-dimensional solid geological model of the mine in the prior art is to be further improved. In order to solve the technical problems, the invention is realized by adopting the following technical scheme. A lightweight online analysis framework for a three-dimensional solid geological model of a mine, the framework comprising. And the drilling data intelligent fusion module is used for carrying out feature extraction, multi-coordinate system unification and incremental topology update on the drilling data by adopting an improved Douglas-Peucker algorithm. The hybrid lightweight modeling module comprises an octree-triangle network coupling structure and a dynamic compression transmission unit. The octree-triangle network coupling structure is realized in the mode that the minimum division granularity of the octree node storage body attribute data is less than or equal to 0.5m < 3 >, the near end keeps 0.05m precision and the far end reduces to 0.2m precision through the dynamic correlation of a triangle network LOD level and the viewpoint distance, the dynamic precision switching is realized, and the mapping relation between octree leaf nodes and triangle network vertexes is recorded by a bidirectional index table. The distributed computing engine is used for integrating the WebGL accelerated seepage simulator and the incremental updating algorithm. And the data visualization terminal is used for supporting multi-user cooperative operation and real-time calculation result rendering. Compared with the prior art, the invention has the following technical effects. (I) According to the framework, the data volume of the traditional full-triangle network model is compressed through the octree-triangle network mixed structure and the dynamic compression transmission unit of the mixed lightweight modeling module, and a dynamic streaming strategy is adopted, so that the loading time of the first screen of the mine model of the billion-level unit is shortened compared with that of the traditional scheme under the conventional 4G network environment, and the real-time retrieval requirement of a mobile terminal is met. And (II) the frame eliminates the spatial deviation of drilling data based on a column coordinate system transformation algorithm of a roadway center line, reduces the coordinate alignment error of a geologic body and an engineering body, and improves the accuracy of rock stratum interface identification on the premise of 83% of drilling data compression rate by improving a Douglas-Peuc