银川盆地三维地质构造模型建立

Establishment of a 3D Geological Structure Model for the Yinchuan Basin

摘要: 为了建立银川盆地三维地质构造模型，收集整理了前人在银川盆地的地质、石油勘探、人工地震探测成果，利用三维建模技术，建立了银川盆地三维地质构造模型，结果表明，要建立较为可靠的三维地质构造模型，应对研究区前人研究资料进行仔细分析，选择可靠性较高的成果作为地质构造建模的基础资料，同时应用可靠性较低的资料作为补充，如果建模数据点较多，则插值结果与实际地质体更接近，如果建模数据点稀少，则插值结果导致数据点不能与实际地质体相吻合，就要对模型进行反复调整，直到数据点与模型相吻合，对于三维断层模型，要根据断层之间的接触关系对不同断层进行相应调整，对于三维地层模型，应根据地层层序，对相交部分进行调整。

Abstract: To establish a three-dimensional geological model of the Yinchuan Basin, the geological, petroleum exploration, and seismic detection results from previous studies in the Yinchuan Basin were collected and compiled. Using 3D modeling techniques, a three-dimensional geological model of the Yinchuan Basin was constructed. The results indicate that to establish a relatively reliable three-dimensional geological model, the pre-existing research data of the study area should be carefully analyzed, with more reliable results selected as the foundational data for geological modeling, while less reliable data can be used as supplementary material. If there are more data points for modeling, the interpolation results will be closer to the actual geological body. If the modeling data points are sparse, the interpolation may cause the data points to deviate from the actual geological body, necessitating repeated adjustments to the model until the data points align with the model. For the three-dimensional fault model, adjustments should be made to different faults based on their contact relationships. For the three-dimensional stratigraphic model, intersecting sections should be adjusted according to the stratigraphic sequence.