Abstract: In traditional geological modeling methods, the expression of the stratigraphic model is inaccurate and the stratigraphic boundary has a sawtooth phenomenon. Moreover, due to the large amount of model data, it cannot be smoothly loaded and rendered on the Web side. To solve these problems, this paper proposes a three-dimensional (3D) geological modeling method based on regular voxel splitting. This method first uses the boreholes and geological section data in the geological survey for data conversion and fusion, and encrypts the stratum vector point through the interpolation algorithm, and then constructs and divides the regular voxels, and designs 5 different regular voxel splitting types. At the same time, the data structure design of the voxel splitting model is carried out, and the irregular voxel metadata structure is analyzed and displayed through Three.js. Using this method, a 3D geological model was constructed based on the survey data of a certain area of Zhengzhou City, and the Web-side visualization was performed. Experiments have proved that the constructed model can accurately and smoothly express different stratigraphic structures, and can realize rapid rendering, spatial query and analysis of the internal information of geological bodies in the browser.

Key words: data fusion, regular voxel splitting model, geological modeling, 3D visualization