CATIA three-dimensional geologic model structure tree information coding method

The invention discloses a CATIA three-dimensional geological model structure tree information coding method. The method comprises the following steps: 1, establishing a three-dimensional geological model, wherein the three-dimensional geological model comprises geological geometrical information and attribute information; 2, classifying and grading the three-dimensional geologic model structure tree information by adopting a geometric figure set, wherein the structure tree information is divided into engineering geological classification information and engineering geological attribute information, the geometric figure set name representing engineering geology classification grading information and the geological geometry name representing engineering geology attribute information; 3, establishing an information coding rule of each hierarchical structure tree; and 4, encoding the structure tree information of each level according to the rule in the step 3. The method has the advantagesthat the geological info