Mechanism and implementation of error correction for 3D strata model

3D strata model is useful to support underground engineering, and borehole data is the chief source for 3D geology modeling. For the complexity of geological entity and the sparsity of sample data, it is unable to control the accuracy of modeling outcome only using scattered borehole data. Based on the analysis of the source of modeling error, two approaches for error correction of 3D strata modeling from borehole data, called the cross-section method and the virtual borehole method, are presented. During the modeling process, cross-sections and/or virtual boreholes can be added directly to the 3D strata model in the proper place for the engineers' demand and comprehension. Cross-sections and/or virtual boreholes, which represent the local variation character, restrict the model just as real boreholes to generate solid model accurately, and it is easy to correct the error of 3D strata model using those approaches.