Application of three-dimensional visualization in stability calculation of landslide

摘要

With the implementation of west development in China, geological hazard prevention becomes one of the most important problems which govern project construction safety. As a new technique in engineering geology, three-dimensional visualization can provide prompt and reliable medium for measurement adoption and project management. Firstly, digital model of strata surfaces and sliding surface are interpolated by Kringig method. Then, three-dimensional geological model is formed according to adjoining relationship. Based on the data model, a new landslide calculation model is brought up. Compared with traditional methods, man-made slicing is unnecessary and geometric and mechanical parameters can be directly attained from three-dimensional geological model. By the method, three-dimensional stability analysis on the basis of lattice data is carried out in the paper. The calculation model stands theoretically on the principle of minimum potential energy. It is actually a systematic analysis method for sliding surface and body, so it avoids any assumption. Stability factor of sliding surface with random shape can be worked out rapidly by the simple and ocular method. A typical slope extracted from an expressway can prove its rationality and fitness.