Abstract:

Currently, primary TIN modeling is widely used to build three dimensional structures of stratified geological objects. However, it is deficient in building geological blocks. Considering the complex location relationship among different geological blocks which caused by disappearance, outcrop and other phenomena, according to features of primary TIN modeling, the sub-face type marks can be set up due to the difference of overlapping frequency of the triangulation networks in corresponding areas among different strata levels after strata intersection and elevation adjustment. This is in order to separate different sub-faces in one stratum level which have different sub-face type marks. The corresponding relationship between geological structural blocks and sub-faces referenced could be built instantly through the type marks of sub-faces. Eventually, geological structural blocks can be separated automatically; and it ensures that the adjacent blocks have the only public-face at the adjoiner. From this, the topological spatial relationship among different geological structural blocks could be established easily.

Key words: geological structural blocks, stratified geological objects, primary TIN modeling, sub-face