GTP-based integral real-3D spatial model for engineering excavation GIS |
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Authors: | Wu Lixin Shi Wenzhong |
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Institution: | (1) Institute of RS/GPS/GIS and Subsidence Engineering, China University of Mining & Technology, 100083 Beijing, China |
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Abstract: | Engineering excavation GIS (E2GIS) is a real-3D GIS serving for geosciences related to geo-engineering, civil engineering and mining engineering based on generalized tri-prism (GTP) model. As two instances of GTP model, G-GTP is used for the real-3D modeling of subsurface geological bodies, and E-GTP is used for the real-3D modeling of subsurface engineering excavations.In the light of the discussions on the features and functions of E2GIS, the modeling principles of G-GTP and E-GTP are introduced. The two models couple together seamlessly to form an integral model for subsurface spatial objects including both geological bodies and excavations. An object-oriented integral real-3D data model and integral spatial topological relations are discussed. |
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Keywords: | real-3D spatial modeling geosciences engineering GTP model E2GIS |
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