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本文基于GMS平台,在综合分析重庆某山区地质平面图、地质剖面图、钻孔资料等数据基础上构建了三维可视化地质模型。模拟结果表明:研究区砂泥岩倾斜互层的沉积顺序和不同岩性的空间分布情况与该区已有资料相一致;模型剖面与实际地质剖面面积之比约为1.15,主要岩性面积百分比相对误差绝对值均在15%以内。运用该模型概化为三维水文地质模型,模拟得出研究区地下水流场空间分布,体现了三维地质模型在地下水数值模拟方面的运用价值。该模型的构建为山区区域地质结构研究提供了参考,也为今后该地区开展地下水相关工作打下了基础。
Based on the GMS platform, this paper constructs a three-dimensional visualization geological model based on the comprehensive analysis of geological map, geological profile and borehole data of a mountainous area in Chongqing. The simulation results show that the order of sedimentary sequence and spatial distribution of different lithology of sandstone-shale interlacing in the study area are consistent with the existing data in this area. The ratio of the model section to the actual geological section area is about 1.15 and the percentage of the main lithologic area is relatively The absolute error is less than 15%. The model is generalized to three-dimensional hydrogeological model, and the spatial distribution of groundwater flow field in the study area is simulated to reflect the application value of 3D geological model in groundwater numerical simulation. The construction of this model provides a reference for the study of geological structure in mountainous area and lays the foundation for groundwater related work in this area in the future.