The invention relates to the field of three-
dimensional modeling construction plane of geology, in particular to a method and a
system for constructing a three-dimensional
ground plane based on faultconstraint, which differ in that the method comprises the following steps: step A, importing qualified
fault plane data; step B, constructing a
ground level model based on fault constraint; step C, manually checking that quality of the
ground level generation; if the quality is qualified, executing step D; conversely, if the quality is not qualified, after re-editing the
fault plane data through manual interaction, updating the
ground plane and re-checking the quality of the
ground plane; step D, judging whether that ground lay has abnormal conditions of
erosion and pinching out; if there is an abnormal situation, then dealing with the formation of
erosion, pinching out of the abnormal situation; conversely, if there is no anomaly, finishing the construction of the terrestrial model. The
system comprises a data import layer, an
automation layer and an
exception handling layer. The invention supports the reverse
fault plane and has high modeling efficiency.